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Driver Core changes for 6.2-rc1

Browse source 
Here is the set of driver core and kernfs changes for 6.2-rc1.
 
 The "big" change in here is the addition of a new macro,
 container_of_const() that will preserve the "const-ness" of a pointer
 passed into it.
 
 The "problem" of the current container_of() macro is that if you pass in
 a "const *", out of it can comes a non-const pointer unless you
 specifically ask for it.  For many usages, we want to preserve the
 "const" attribute by using the same call.  For a specific example, this
 series changes the kobj_to_dev() macro to use it, allowing it to be used
 no matter what the const value is.  This prevents every subsystem from
 having to declare 2 different individual macros (i.e.
 kobj_const_to_dev() and kobj_to_dev()) and having the compiler enforce
 the const value at build time, which having 2 macros would not do
 either.
 
 The driver for all of this have been discussions with the Rust kernel
 developers as to how to properly mark driver core, and kobject, objects
 as being "non-mutable".  The changes to the kobject and driver core in
 this pull request are the result of that, as there are lots of paths
 where kobjects and device pointers are not modified at all, so marking
 them as "const" allows the compiler to enforce this.
 
 So, a nice side affect of the Rust development effort has been already
 to clean up the driver core code to be more obvious about object rules.
 
 All of this has been bike-shedded in quite a lot of detail on lkml with
 different names and implementations resulting in the tiny version we
 have in here, much better than my original proposal.  Lots of subsystem
 maintainers have acked the changes as well.
 
 Other than this change, included in here are smaller stuff like:
   - kernfs fixes and updates to handle lock contention better
   - vmlinux.lds.h fixes and updates
   - sysfs and debugfs documentation updates
   - device property updates
 
 All of these have been in the linux-next tree for quite a while with no
 problems, OTHER than some merge issues with other trees that should be
 obvious when you hit them (block tree deletes a driver that this tree
 modifies, iommufd tree modifies code that this tree also touches).  If
 there are merge problems with these trees, please let me know.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'driver-core-6.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core

Pull driver core updates from Greg KH:
 "Here is the set of driver core and kernfs changes for 6.2-rc1.

  The "big" change in here is the addition of a new macro,
  container_of_const() that will preserve the "const-ness" of a pointer
  passed into it.

  The "problem" of the current container_of() macro is that if you pass
  in a "const *", out of it can comes a non-const pointer unless you
  specifically ask for it. For many usages, we want to preserve the
  "const" attribute by using the same call. For a specific example, this
  series changes the kobj_to_dev() macro to use it, allowing it to be
  used no matter what the const value is. This prevents every subsystem
  from having to declare 2 different individual macros (i.e.
  kobj_const_to_dev() and kobj_to_dev()) and having the compiler enforce
  the const value at build time, which having 2 macros would not do
  either.

  The driver for all of this have been discussions with the Rust kernel
  developers as to how to properly mark driver core, and kobject,
  objects as being "non-mutable". The changes to the kobject and driver
  core in this pull request are the result of that, as there are lots of
  paths where kobjects and device pointers are not modified at all, so
  marking them as "const" allows the compiler to enforce this.

  So, a nice side affect of the Rust development effort has been already
  to clean up the driver core code to be more obvious about object
  rules.

  All of this has been bike-shedded in quite a lot of detail on lkml
  with different names and implementations resulting in the tiny version
  we have in here, much better than my original proposal. Lots of
  subsystem maintainers have acked the changes as well.

  Other than this change, included in here are smaller stuff like:

   - kernfs fixes and updates to handle lock contention better

   - vmlinux.lds.h fixes and updates

   - sysfs and debugfs documentation updates

   - device property updates

  All of these have been in the linux-next tree for quite a while with
  no problems"

* tag 'driver-core-6.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (58 commits)
  device property: Fix documentation for fwnode_get_next_parent()
  firmware_loader: fix up to_fw_sysfs() to preserve const
  usb.h: take advantage of container_of_const()
  device.h: move kobj_to_dev() to use container_of_const()
  container_of: add container_of_const() that preserves const-ness of the pointer
  driver core: fix up missed drivers/s390/char/hmcdrv_dev.c class.devnode() conversion.
  driver core: fix up missed scsi/cxlflash class.devnode() conversion.
  driver core: fix up some missing class.devnode() conversions.
  driver core: make struct class.devnode() take a const *
  driver core: make struct class.dev_uevent() take a const *
  cacheinfo: Remove of_node_put() for fw_token
  device property: Add a blank line in Kconfig of tests
  device property: Rename goto label to be more precise
  device property: Move PROPERTY_ENTRY_BOOL() a bit down
  device property: Get rid of __PROPERTY_ENTRY_ARRAY_EL*SIZE*()
  kernfs: fix all kernel-doc warnings and multiple typos
  driver core: pass a const * into of_device_uevent()
  kobject: kset_uevent_ops: make name() callback take a const *
  kobject: kset_uevent_ops: make filter() callback take a const *
  kobject: make kobject_namespace take a const *
  ...
This commit is contained in:
Linus Torvalds 2022-12-16 03:54:54 -08:00
parent ba54ff1fb6 f18caf2613
commit 71a7507afb
92 changed files with 499 additions and 505 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

12
Documentation/ABI/testing/sysfs-kernel-cpu_byteorder Normal file
View file

@ -0,0 +1,12 @@
What: /sys/kernel/cpu_byteorder
Date: February 2023
KernelVersion: 6.2
Contact: Thomas Weißschuh <linux@weissschuh.net>
Description:
The endianness of the running kernel.
Access: Read
Valid values:
"little", "big"
Users: util-linux

1
Documentation/driver-api/driver-model/devres.rst
View file

@ -365,6 +365,7 @@ MEM
devm_kmemdup()
devm_krealloc()
devm_kstrdup()
devm_kstrdup_const()
devm_kvasprintf()
devm_kzalloc()

2
arch/powerpc/platforms/book3s/vas-api.c
View file

@ -53,7 +53,7 @@ struct coproc_instance {
struct vas_window *txwin;
};
static char *coproc_devnode(struct device *dev, umode_t *mode)
static char *coproc_devnode(const struct device *dev, umode_t *mode)
{
return kasprintf(GFP_KERNEL, "crypto/%s", dev_name(dev));
}

4
arch/x86/kernel/cpu/resctrl/pseudo_lock.c
View file

@ -1560,9 +1560,9 @@ static const struct file_operations pseudo_lock_dev_fops = {
.mmap = pseudo_lock_dev_mmap,
};
static char *pseudo_lock_devnode(struct device *dev, umode_t *mode)
static char *pseudo_lock_devnode(const struct device *dev, umode_t *mode)
{
struct rdtgroup *rdtgrp;
const struct rdtgroup *rdtgrp;
rdtgrp = dev_get_drvdata(dev);
if (mode)

2
arch/x86/kernel/cpuid.c
View file

@ -139,7 +139,7 @@ static int cpuid_device_destroy(unsigned int cpu)
return 0;
}
static char *cpuid_devnode(struct device *dev, umode_t *mode)
static char *cpuid_devnode(const struct device *dev, umode_t *mode)
{
return kasprintf(GFP_KERNEL, "cpu/%u/cpuid", MINOR(dev->devt));
}

2
arch/x86/kernel/msr.c
View file

@ -250,7 +250,7 @@ static int msr_device_destroy(unsigned int cpu)
return 0;
}
static char *msr_devnode(struct device *dev, umode_t *mode)
static char *msr_devnode(const struct device *dev, umode_t *mode)
{
return kasprintf(GFP_KERNEL, "cpu/%u/msr", MINOR(dev->devt));
}

2
block/bsg.c
View file

@ -235,7 +235,7 @@ struct bsg_device *bsg_register_queue(struct request_queue *q,
}
EXPORT_SYMBOL_GPL(bsg_register_queue);
static char *bsg_devnode(struct device *dev, umode_t *mode)
static char *bsg_devnode(const struct device *dev, umode_t *mode)
{
return kasprintf(GFP_KERNEL, "bsg/%s", dev_name(dev));
}

4
block/genhd.c
View file

@ -1189,9 +1189,9 @@ static void disk_release(struct device *dev)
iput(disk->part0->bd_inode); /* frees the disk */
}
static int block_uevent(struct device *dev, struct kobj_uevent_env *env)
static int block_uevent(const struct device *dev, struct kobj_uevent_env *env)
{
struct gendisk *disk = dev_to_disk(dev);
const struct gendisk *disk = dev_to_disk(dev);
return add_uevent_var(env, "DISKSEQ=%llu", disk->diskseq);
}

1
drivers/base/base.h
View file

@ -146,7 +146,6 @@ static inline int driver_match_device(struct device_driver *drv,
{
return drv->bus->match ? drv->bus->match(dev, drv) : 1;
}
extern bool driver_allows_async_probing(struct device_driver *drv);
extern int driver_add_groups(struct device_driver *drv,
const struct attribute_group **groups);

2
drivers/base/bus.c
View file

@ -163,7 +163,7 @@ static struct kobj_type bus_ktype = {
.release = bus_release,
};
static int bus_uevent_filter(struct kobject *kobj)
static int bus_uevent_filter(const struct kobject *kobj)
{
const struct kobj_type *ktype = get_ktype(kobj);

19
drivers/base/cacheinfo.c
View file

@ -196,7 +196,7 @@ static void cache_of_set_props(struct cacheinfo *this_leaf,
static int cache_setup_of_node(unsigned int cpu)
{
struct device_node *np;
struct device_node *np, *prev;
struct cacheinfo *this_leaf;
unsigned int index = 0;
@ -206,19 +206,24 @@ static int cache_setup_of_node(unsigned int cpu)
return -ENOENT;
}
prev = np;
while (index < cache_leaves(cpu)) {
this_leaf = per_cpu_cacheinfo_idx(cpu, index);
if (this_leaf->level != 1)
if (this_leaf->level != 1) {
np = of_find_next_cache_node(np);
else
np = of_node_get(np);/* cpu node itself */
if (!np)
break;
of_node_put(prev);
prev = np;
if (!np)
break;
}
cache_of_set_props(this_leaf, np);
this_leaf->fw_token = np;
index++;
}
of_node_put(np);
if (index != cache_leaves(cpu)) /* not all OF nodes populated */
return -ENOENT;
@ -312,8 +317,6 @@ static void cache_shared_cpu_map_remove(unsigned int cpu)
cpumask_clear_cpu(cpu, &sib_leaf->shared_cpu_map);
cpumask_clear_cpu(sibling, &this_leaf->shared_cpu_map);
}
if (of_have_populated_dt())
of_node_put(this_leaf->fw_token);
}
}

7
drivers/base/class.c
View file

@ -62,7 +62,7 @@ static void class_release(struct kobject *kobj)
kfree(cp);
}
static const struct kobj_ns_type_operations *class_child_ns_type(struct kobject *kobj)
static const struct kobj_ns_type_operations *class_child_ns_type(const struct kobject *kobj)
{
struct subsys_private *cp = to_subsys_private(kobj);
struct class *class = cp->class;
@ -192,6 +192,11 @@ int __class_register(struct class *cls, struct lock_class_key *key)
}
error = class_add_groups(class_get(cls), cls->class_groups);
class_put(cls);
if (error) {
kobject_del(&cp->subsys.kobj);
kfree_const(cp->subsys.kobj.name);
kfree(cp);
}
return error;
}
EXPORT_SYMBOL_GPL(__class_register);

66
drivers/base/core.c
View file

@ -14,6 +14,7 @@
#include <linux/err.h>
#include <linux/fwnode.h>
#include <linux/init.h>
#include <linux/kstrtox.h>
#include <linux/module.h>
#include <linux/slab.h>
#include <linux/string.h>
@ -1628,7 +1629,7 @@ early_param("fw_devlink", fw_devlink_setup);
static bool fw_devlink_strict;
static int __init fw_devlink_strict_setup(char *arg)
{
return strtobool(arg, &fw_devlink_strict);
return kstrtobool(arg, &fw_devlink_strict);
}
early_param("fw_devlink.strict", fw_devlink_strict_setup);
@ -2280,7 +2281,7 @@ ssize_t device_store_bool(struct device *dev, struct device_attribute *attr,
{
struct dev_ext_attribute *ea = to_ext_attr(attr);
if (strtobool(buf, ea->var) < 0)
if (kstrtobool(buf, ea->var) < 0)
return -EINVAL;
return size;
@ -2334,9 +2335,9 @@ static void device_release(struct kobject *kobj)
kfree(p);
}
static const void *device_namespace(struct kobject *kobj)
static const void *device_namespace(const struct kobject *kobj)
{
struct device *dev = kobj_to_dev(kobj);
const struct device *dev = kobj_to_dev(kobj);
const void *ns = NULL;
if (dev->class && dev->class->ns_type)
@ -2345,9 +2346,9 @@ static const void *device_namespace(struct kobject *kobj)
return ns;
}
static void device_get_ownership(struct kobject *kobj, kuid_t *uid, kgid_t *gid)
static void device_get_ownership(const struct kobject *kobj, kuid_t *uid, kgid_t *gid)
{
struct device *dev = kobj_to_dev(kobj);
const struct device *dev = kobj_to_dev(kobj);
if (dev->class && dev->class->get_ownership)
dev->class->get_ownership(dev, uid, gid);
@ -2361,12 +2362,12 @@ static struct kobj_type device_ktype = {
};
static int dev_uevent_filter(struct kobject *kobj)
static int dev_uevent_filter(const struct kobject *kobj)
{
const struct kobj_type *ktype = get_ktype(kobj);
if (ktype == &device_ktype) {
struct device *dev = kobj_to_dev(kobj);
const struct device *dev = kobj_to_dev(kobj);
if (dev->bus)
return 1;
if (dev->class)
@ -2375,9 +2376,9 @@ static int dev_uevent_filter(struct kobject *kobj)
return 0;
}
static const char *dev_uevent_name(struct kobject *kobj)
static const char *dev_uevent_name(const struct kobject *kobj)
{
struct device *dev = kobj_to_dev(kobj);
const struct device *dev = kobj_to_dev(kobj);
if (dev->bus)
return dev->bus->name;
@ -2534,7 +2535,7 @@ static ssize_t online_store(struct device *dev, struct device_attribute *attr,
bool val;
int ret;
ret = strtobool(buf, &val);
ret = kstrtobool(buf, &val);
if (ret < 0)
return ret;
@ -2585,11 +2586,6 @@ union device_attr_group_devres {
const struct attribute_group **groups;
};
static int devm_attr_group_match(struct device *dev, void *res, void *data)
{
return ((union device_attr_group_devres *)res)->group == data;
}
static void devm_attr_group_remove(struct device *dev, void *res)
{
union device_attr_group_devres *devres = res;
@ -2640,23 +2636,6 @@ int devm_device_add_group(struct device *dev, const struct attribute_group *grp)
}
EXPORT_SYMBOL_GPL(devm_device_add_group);
/**
* devm_device_remove_group: remove a managed group from a device
* @dev: device to remove the group from
* @grp: group to remove
*
* This function removes a group of attributes from a device. The attributes
* previously have to have been created for this group, otherwise it will fail.
*/
void devm_device_remove_group(struct device *dev,
const struct attribute_group *grp)
{
WARN_ON(devres_release(dev, devm_attr_group_remove,
devm_attr_group_match,
/* cast away const */ (void *)grp));
}
EXPORT_SYMBOL_GPL(devm_device_remove_group);
/**
* devm_device_add_groups - create a bunch of managed attribute groups
* @dev: The device to create the group for
@ -2693,23 +2672,6 @@ int devm_device_add_groups(struct device *dev,
}
EXPORT_SYMBOL_GPL(devm_device_add_groups);
/**
* devm_device_remove_groups - remove a list of managed groups
*
* @dev: The device for the groups to be removed from
* @groups: NULL terminated list of groups to be removed
*
* If groups is not NULL, remove the specified groups from the device.
*/
void devm_device_remove_groups(struct device *dev,
const struct attribute_group **groups)
{
WARN_ON(devres_release(dev, devm_attr_groups_remove,
devm_attr_group_match,
/* cast away const */ (void *)groups));
}
EXPORT_SYMBOL_GPL(devm_device_remove_groups);
static int device_add_attrs(struct device *dev)
{
struct class *class = dev->class;
@ -3024,9 +2986,9 @@ static void class_dir_release(struct kobject *kobj)
}
static const
struct kobj_ns_type_operations *class_dir_child_ns_type(struct kobject *kobj)
struct kobj_ns_type_operations *class_dir_child_ns_type(const struct kobject *kobj)
{
struct class_dir *dir = to_class_dir(kobj);
const struct class_dir *dir = to_class_dir(kobj);
return dir->class->ns_type;
}

8
drivers/base/dd.c
View file

@ -843,7 +843,7 @@ static int __init save_async_options(char *buf)
}
__setup("driver_async_probe=", save_async_options);
bool driver_allows_async_probing(struct device_driver *drv)
static bool driver_allows_async_probing(struct device_driver *drv)
{
switch (drv->probe_type) {
case PROBE_PREFER_ASYNCHRONOUS:
@ -1162,7 +1162,11 @@ static int __driver_attach(struct device *dev, void *data)
return 0;
} else if (ret < 0) {
dev_dbg(dev, "Bus failed to match device: %d\n", ret);
return ret;
/*
* Driver could not match with device, but may match with
* another device on the bus.
*/
return 0;
} /* ret > 0 means positive match */
if (driver_allows_async_probing(drv)) {

3
drivers/base/devres.c
View file

@ -101,6 +101,9 @@ static bool check_dr_size(size_t size, size_t *tot_size)
size, tot_size)))
return false;
/* Actually allocate the full kmalloc bucket size. */
*tot_size = kmalloc_size_roundup(*tot_size);
return true;
}

6
drivers/base/firmware_loader/sysfs.c
View file

@ -64,7 +64,7 @@ static struct attribute *firmware_class_attrs[] = {
};
ATTRIBUTE_GROUPS(firmware_class);
static int do_firmware_uevent(struct fw_sysfs *fw_sysfs, struct kobj_uevent_env *env)
static int do_firmware_uevent(const struct fw_sysfs *fw_sysfs, struct kobj_uevent_env *env)
{
if (add_uevent_var(env, "FIRMWARE=%s", fw_sysfs->fw_priv->fw_name))
return -ENOMEM;
@ -76,9 +76,9 @@ static int do_firmware_uevent(struct fw_sysfs *fw_sysfs, struct kobj_uevent_env
return 0;
}
static int firmware_uevent(struct device *dev, struct kobj_uevent_env *env)
static int firmware_uevent(const struct device *dev, struct kobj_uevent_env *env)
{
struct fw_sysfs *fw_sysfs = to_fw_sysfs(dev);
const struct fw_sysfs *fw_sysfs = to_fw_sysfs(dev);
int err = 0;
mutex_lock(&fw_lock);

6
drivers/base/firmware_loader/sysfs.h
View file

@ -80,11 +80,7 @@ struct fw_sysfs {
struct firmware *fw;
void *fw_upload_priv;
};
static inline struct fw_sysfs *to_fw_sysfs(struct device *dev)
{
return container_of(dev, struct fw_sysfs, dev);
}
#define to_fw_sysfs(__dev) container_of_const(__dev, struct fw_sysfs, dev)
void __fw_load_abort(struct fw_priv *fw_priv);

4
drivers/base/platform.c
View file

@ -441,8 +441,8 @@ static int __platform_get_irq_byname(struct platform_device *dev,
struct resource *r;
int ret;
if (IS_ENABLED(CONFIG_OF_IRQ) && dev->dev.of_node) {
ret = of_irq_get_byname(dev->dev.of_node, name);
if (!dev->dev.of_node || IS_ENABLED(CONFIG_OF_IRQ)) {
ret = fwnode_irq_get_byname(dev_fwnode(&dev->dev), name);
if (ret > 0 || ret == -EPROBE_DEFER)
return ret;
}

36
drivers/base/property.c
View file

@ -17,12 +17,19 @@
#include <linux/property.h>
#include <linux/phy.h>
struct fwnode_handle *dev_fwnode(const struct device *dev)
struct fwnode_handle *__dev_fwnode(struct device *dev)
{
return IS_ENABLED(CONFIG_OF) && dev->of_node ?
of_fwnode_handle(dev->of_node) : dev->fwnode;
}
EXPORT_SYMBOL_GPL(dev_fwnode);
EXPORT_SYMBOL_GPL(__dev_fwnode);
const struct fwnode_handle *__dev_fwnode_const(const struct device *dev)
{
return IS_ENABLED(CONFIG_OF) && dev->of_node ?
of_fwnode_handle(dev->of_node) : dev->fwnode;
}
EXPORT_SYMBOL_GPL(__dev_fwnode_const);
/**
* device_property_present - check if a property of a device is present
@ -475,12 +482,13 @@ int fwnode_property_match_string(const struct fwnode_handle *fwnode,
ret = fwnode_property_read_string_array(fwnode, propname, values, nval);
if (ret < 0)
goto out;
goto out_free;
ret = match_string(values, nval, string);
if (ret < 0)
ret = -ENODATA;
out:
out_free:
kfree(values);
return ret;
}
@ -601,7 +609,7 @@ EXPORT_SYMBOL_GPL(fwnode_get_parent);
* node's parents.
*
* Returns a node pointer with refcount incremented, use
* fwnode_handle_node() on it when done.
* fwnode_handle_put() on it when done.
*/
struct fwnode_handle *fwnode_get_next_parent(struct fwnode_handle *fwnode)
{
@ -756,7 +764,7 @@ EXPORT_SYMBOL_GPL(fwnode_get_next_available_child_node);
* @dev: Device to find the next child node for.
* @child: Handle to one of the device's child nodes or a null handle.
*/
struct fwnode_handle *device_get_next_child_node(struct device *dev,
struct fwnode_handle *device_get_next_child_node(const struct device *dev,
struct fwnode_handle *child)
{
const struct fwnode_handle *fwnode = dev_fwnode(dev);
@ -793,7 +801,7 @@ EXPORT_SYMBOL_GPL(fwnode_get_named_child_node);
* @dev: Device to find the named child node for.
* @childname: String to match child node name against.
*/
struct fwnode_handle *device_get_named_child_node(struct device *dev,
struct fwnode_handle *device_get_named_child_node(const struct device *dev,
const char *childname)
{
return fwnode_get_named_child_node(dev_fwnode(dev), childname);
@ -852,7 +860,7 @@ EXPORT_SYMBOL_GPL(fwnode_device_is_available);
* device_get_child_node_count - return the number of child nodes for device
* @dev: Device to cound the child nodes for
*/
unsigned int device_get_child_node_count(struct device *dev)
unsigned int device_get_child_node_count(const struct device *dev)
{
struct fwnode_handle *child;
unsigned int count = 0;
@ -864,13 +872,13 @@ unsigned int device_get_child_node_count(struct device *dev)
}
EXPORT_SYMBOL_GPL(device_get_child_node_count);
bool device_dma_supported(struct device *dev)
bool device_dma_supported(const struct device *dev)
{
return fwnode_call_bool_op(dev_fwnode(dev), device_dma_supported);
}
EXPORT_SYMBOL_GPL(device_dma_supported);
enum dev_dma_attr device_get_dma_attr(struct device *dev)
enum dev_dma_attr device_get_dma_attr(const struct device *dev)
{
if (!fwnode_has_op(dev_fwnode(dev), device_get_dma_attr))
return DEV_DMA_NOT_SUPPORTED;
@ -1206,7 +1214,7 @@ const void *device_get_match_data(const struct device *dev)
}
EXPORT_SYMBOL_GPL(device_get_match_data);
static unsigned int fwnode_graph_devcon_matches(struct fwnode_handle *fwnode,
static unsigned int fwnode_graph_devcon_matches(const struct fwnode_handle *fwnode,
const char *con_id, void *data,
devcon_match_fn_t match,
void **matches,
@ -1240,7 +1248,7 @@ static unsigned int fwnode_graph_devcon_matches(struct fwnode_handle *fwnode,
return count;
}
static unsigned int fwnode_devcon_matches(struct fwnode_handle *fwnode,
static unsigned int fwnode_devcon_matches(const struct fwnode_handle *fwnode,
const char *con_id, void *data,
devcon_match_fn_t match,
void **matches,
@ -1282,7 +1290,7 @@ static unsigned int fwnode_devcon_matches(struct fwnode_handle *fwnode,
* device node. @match will be used to convert the connection description to
* data the caller is expecting to be returned.
*/
void *fwnode_connection_find_match(struct fwnode_handle *fwnode,
void *fwnode_connection_find_match(const struct fwnode_handle *fwnode,
const char *con_id, void *data,
devcon_match_fn_t match)
{
@ -1319,7 +1327,7 @@ EXPORT_SYMBOL_GPL(fwnode_connection_find_match);
*
* Return: Number of matches resolved, or negative errno.
*/
int fwnode_connection_find_matches(struct fwnode_handle *fwnode,
int fwnode_connection_find_matches(const struct fwnode_handle *fwnode,
const char *con_id, void *data,
devcon_match_fn_t match,
void **matches, unsigned int matches_len)

1
drivers/base/test/Kconfig
View file

@ -8,6 +8,7 @@ config TEST_ASYNC_DRIVER_PROBE
The module name will be test_async_driver_probe.ko
If unsure say N.
config DRIVER_PE_KUNIT_TEST
bool "KUnit Tests for property entry API" if !KUNIT_ALL_TESTS
depends on KUNIT=y

2
drivers/block/aoe/aoechr.c
View file

@ -273,7 +273,7 @@ static const struct file_operations aoe_fops = {
.llseek = noop_llseek,
};
static char *aoe_devnode(struct device *dev, umode_t *mode)
static char *aoe_devnode(const struct device *dev, umode_t *mode)
{
return kasprintf(GFP_KERNEL, "etherd/%s", dev_name(dev));
}

2
drivers/char/mem.c
View file

@ -746,7 +746,7 @@ static const struct file_operations memory_fops = {
.llseek = noop_llseek,
};
static char *mem_devnode(struct device *dev, umode_t *mode)
static char *mem_devnode(const struct device *dev, umode_t *mode)
{
if (mode && devlist[MINOR(dev->devt)].mode)
*mode = devlist[MINOR(dev->devt)].mode;

4
drivers/char/misc.c
View file

@ -269,9 +269,9 @@ void misc_deregister(struct miscdevice *misc)
}
EXPORT_SYMBOL(misc_deregister);
static char *misc_devnode(struct device *dev, umode_t *mode)
static char *misc_devnode(const struct device *dev, umode_t *mode)
{
struct miscdevice *c = dev_get_drvdata(dev);
const struct miscdevice *c = dev_get_drvdata(dev);
if (mode && c->mode)
*mode = c->mode;

2
drivers/dma-buf/dma-buf-sysfs-stats.c
View file

@ -132,7 +132,7 @@ void dma_buf_stats_teardown(struct dma_buf *dmabuf)
/* Statistics files do not need to send uevents. */
static int dmabuf_sysfs_uevent_filter(struct kobject *kobj)
static int dmabuf_sysfs_uevent_filter(const struct kobject *kobj)
{
return 0;
}

2
drivers/dma-buf/dma-heap.c
View file

@ -301,7 +301,7 @@ struct dma_heap *dma_heap_add(const struct dma_heap_export_info *exp_info)
return err_ret;
}
static char *dma_heap_devnode(struct device *dev, umode_t *mode)
static char *dma_heap_devnode(const struct device *dev, umode_t *mode)
{
return kasprintf(GFP_KERNEL, "dma_heap/%s", dev_name(dev));
}

2
drivers/firmware/dmi-id.c
View file

@ -155,7 +155,7 @@ static const struct attribute_group* sys_dmi_attribute_groups[] = {
NULL
};
static int dmi_dev_uevent(struct device *dev, struct kobj_uevent_env *env)
static int dmi_dev_uevent(const struct device *dev, struct kobj_uevent_env *env)
{
ssize_t len;

6
drivers/gnss/core.c
View file

@ -337,7 +337,7 @@ static const char * const gnss_type_names[GNSS_TYPE_COUNT] = {
[GNSS_TYPE_MTK] = "MTK",
};
static const char *gnss_type_name(struct gnss_device *gdev)
static const char *gnss_type_name(const struct gnss_device *gdev)
{
const char *name = NULL;
@ -365,9 +365,9 @@ static struct attribute *gnss_attrs[] = {
};
ATTRIBUTE_GROUPS(gnss);
static int gnss_uevent(struct device *dev, struct kobj_uevent_env *env)
static int gnss_uevent(const struct device *dev, struct kobj_uevent_env *env)
{
struct gnss_device *gdev = to_gnss_device(dev);
const struct gnss_device *gdev = to_gnss_device(dev);
int ret;
ret = add_uevent_var(env, "GNSS_TYPE=%s", gnss_type_name(gdev));

2
drivers/gpu/drm/drm_sysfs.c
View file

@ -91,7 +91,7 @@ static void drm_sysfs_acpi_register(void) { }
static void drm_sysfs_acpi_unregister(void) { }
#endif
static char *drm_devnode(struct device *dev, umode_t *mode)
static char *drm_devnode(const struct device *dev, umode_t *mode)
{
return kasprintf(GFP_KERNEL, "dri/%s", dev_name(dev));
}

2
drivers/hid/usbhid/hiddev.c
View file

@ -857,7 +857,7 @@ static const struct file_operations hiddev_fops = {
.llseek = noop_llseek,
};
static char *hiddev_devnode(struct device *dev, umode_t *mode)
static char *hiddev_devnode(const struct device *dev, umode_t *mode)
{
return kasprintf(GFP_KERNEL, "usb/%s", dev_name(dev));
}

6
drivers/infiniband/core/device.c
View file

@ -511,7 +511,7 @@ static void ib_device_release(struct device *device)
kfree_rcu(dev, rcu_head);
}
static int ib_device_uevent(struct device *device,
static int ib_device_uevent(const struct device *device,
struct kobj_uevent_env *env)
{
if (add_uevent_var(env, "NAME=%s", dev_name(device)))
@ -524,9 +524,9 @@ static int ib_device_uevent(struct device *device,
return 0;
}
static const void *net_namespace(struct device *d)
static const void *net_namespace(const struct device *d)
{
struct ib_core_device *coredev =
const struct ib_core_device *coredev =
container_of(d, struct ib_core_device, dev);
return read_pnet(&coredev->rdma_net);

2
drivers/infiniband/core/user_mad.c
View file

@ -1224,7 +1224,7 @@ static struct attribute *umad_class_dev_attrs[] = {
};
ATTRIBUTE_GROUPS(umad_class_dev);
static char *umad_devnode(struct device *dev, umode_t *mode)
static char *umad_devnode(const struct device *dev, umode_t *mode)
{
return kasprintf(GFP_KERNEL, "infiniband/%s", dev_name(dev));
}

2
drivers/infiniband/core/uverbs_main.c
View file

@ -1237,7 +1237,7 @@ static void ib_uverbs_remove_one(struct ib_device *device, void *client_data)
put_device(&uverbs_dev->dev);
}
static char *uverbs_devnode(struct device *dev, umode_t *mode)
static char *uverbs_devnode(const struct device *dev, umode_t *mode)
{
if (mode)
*mode = 0666;

4
drivers/infiniband/hw/hfi1/device.c
View file

@ -72,7 +72,7 @@ const char *class_name(void)
return hfi1_class_name;
}
static char *hfi1_devnode(struct device *dev, umode_t *mode)
static char *hfi1_devnode(const struct device *dev, umode_t *mode)
{
if (mode)
*mode = 0600;
@ -85,7 +85,7 @@ static const char *class_name_user(void)
return hfi1_class_name_user;
}
static char *hfi1_user_devnode(struct device *dev, umode_t *mode)
static char *hfi1_user_devnode(const struct device *dev, umode_t *mode)
{
if (mode)
*mode = 0666;

2
drivers/input/input.c
View file

@ -1914,7 +1914,7 @@ static const struct device_type input_dev_type = {
#endif
};
static char *input_devnode(struct device *dev, umode_t *mode)
static char *input_devnode(const struct device *dev, umode_t *mode)
{
return kasprintf(GFP_KERNEL, "input/%s", dev_name(dev));
}

4
drivers/isdn/mISDN/core.c
View file

@ -139,9 +139,9 @@ static struct attribute *mISDN_attrs[] = {
};
ATTRIBUTE_GROUPS(mISDN);
static int mISDN_uevent(struct device *dev, struct kobj_uevent_env *env)
static int mISDN_uevent(const struct device *dev, struct kobj_uevent_env *env)
{
struct mISDNdevice *mdev = dev_to_mISDN(dev);
const struct mISDNdevice *mdev = dev_to_mISDN(dev);
if (!mdev)
return 0;

8
drivers/media/dvb-core/dvbdev.c
View file

@ -1028,9 +1028,9 @@ void dvb_module_release(struct i2c_client *client)
EXPORT_SYMBOL_GPL(dvb_module_release);
#endif
static int dvb_uevent(struct device *dev, struct kobj_uevent_env *env)
static int dvb_uevent(const struct device *dev, struct kobj_uevent_env *env)
{
struct dvb_device *dvbdev = dev_get_drvdata(dev);
const struct dvb_device *dvbdev = dev_get_drvdata(dev);
add_uevent_var(env, "DVB_ADAPTER_NUM=%d", dvbdev->adapter->num);
add_uevent_var(env, "DVB_DEVICE_TYPE=%s", dnames[dvbdev->type]);
@ -1038,9 +1038,9 @@ static int dvb_uevent(struct device *dev, struct kobj_uevent_env *env)
return 0;
}
static char *dvb_devnode(struct device *dev, umode_t *mode)
static char *dvb_devnode(const struct device *dev, umode_t *mode)
{
struct dvb_device *dvbdev = dev_get_drvdata(dev);
const struct dvb_device *dvbdev = dev_get_drvdata(dev);
return kasprintf(GFP_KERNEL, "dvb/adapter%d/%s%d",
dvbdev->adapter->num, dnames[dvbdev->type], dvbdev->id);

4
drivers/media/pci/ddbridge/ddbridge-core.c
View file

@ -2716,9 +2716,9 @@ static const struct file_operations ddb_fops = {
.release = ddb_release,
};
static char *ddb_devnode(struct device *device, umode_t *mode)
static char *ddb_devnode(const struct device *device, umode_t *mode)
{
struct ddb *dev = dev_get_drvdata(device);
const struct ddb *dev = dev_get_drvdata(device);
return kasprintf(GFP_KERNEL, "ddbridge/card%d", dev->nr);
}

2
drivers/media/rc/rc-main.c
View file

@ -1017,7 +1017,7 @@ static void ir_close(struct input_dev *idev)
}
/* class for /sys/class/rc */
static char *rc_devnode(struct device *dev, umode_t *mode)
static char *rc_devnode(const struct device *dev, umode_t *mode)
{
return kasprintf(GFP_KERNEL, "rc/%s", dev_name(dev));
}

16
drivers/mfd/vexpress-sysreg.c
View file

@ -61,35 +61,27 @@ static struct mfd_cell vexpress_sysreg_cells[] = {
.name = "basic-mmio-gpio",
.of_compatible = "arm,vexpress-sysreg,sys_led",
.num_resources = 1,
.resources = (struct resource []) {
DEFINE_RES_MEM_NAMED(SYS_LED, 0x4, "dat"),
},
.resources = &DEFINE_RES_MEM_NAMED(SYS_LED, 0x4, "dat"),
.platform_data = &vexpress_sysreg_sys_led_pdata,
.pdata_size = sizeof(vexpress_sysreg_sys_led_pdata),
}, {
.name = "basic-mmio-gpio",
.of_compatible = "arm,vexpress-sysreg,sys_mci",
.num_resources = 1,
.resources = (struct resource []) {
DEFINE_RES_MEM_NAMED(SYS_MCI, 0x4, "dat"),
},
.resources = &DEFINE_RES_MEM_NAMED(SYS_MCI, 0x4, "dat"),
.platform_data = &vexpress_sysreg_sys_mci_pdata,
.pdata_size = sizeof(vexpress_sysreg_sys_mci_pdata),
}, {
.name = "basic-mmio-gpio",
.of_compatible = "arm,vexpress-sysreg,sys_flash",
.num_resources = 1,
.resources = (struct resource []) {
DEFINE_RES_MEM_NAMED(SYS_FLASH, 0x4, "dat"),
},
.resources = &DEFINE_RES_MEM_NAMED(SYS_FLASH, 0x4, "dat"),
.platform_data = &vexpress_sysreg_sys_flash_pdata,
.pdata_size = sizeof(vexpress_sysreg_sys_flash_pdata),
}, {
.name = "vexpress-syscfg",
.num_resources = 1,
.resources = (struct resource []) {
DEFINE_RES_MEM(SYS_MISC, 0x4c),
},
.resources = &DEFINE_RES_MEM(SYS_MISC, 0x4c),
}
};

2
drivers/misc/cxl/file.c
View file

@ -546,7 +546,7 @@ static const struct file_operations afu_master_fops = {
};
static char *cxl_devnode(struct device *dev, umode_t *mode)
static char *cxl_devnode(const struct device *dev, umode_t *mode)
{
if (cpu_has_feature(CPU_FTR_HVMODE) &&
CXL_DEVT_IS_CARD(dev->devt)) {

2
drivers/misc/genwqe/card_base.c
View file

@ -1349,7 +1349,7 @@ static struct pci_driver genwqe_driver = {
* Default mode should be rw for everybody. Do not change default
* device name.
*/
static char *genwqe_devnode(struct device *dev, umode_t *mode)
static char *genwqe_devnode(const struct device *dev, umode_t *mode)
{
if (mode)
*mode = 0666;

2
drivers/misc/ocxl/file.c
View file

@ -584,7 +584,7 @@ void ocxl_file_unregister_afu(struct ocxl_afu *afu)
device_unregister(&info->dev);
}
static char *ocxl_devnode(struct device *dev, umode_t *mode)
static char *ocxl_devnode(const struct device *dev, umode_t *mode)
{
return kasprintf(GFP_KERNEL, "ocxl/%s", dev_name(dev));
}

4
drivers/net/ipvlan/ipvtap.c
View file

@ -30,9 +30,9 @@
static dev_t ipvtap_major;
static struct cdev ipvtap_cdev;
static const void *ipvtap_net_namespace(struct device *d)
static const void *ipvtap_net_namespace(const struct device *d)
{
struct net_device *dev = to_net_dev(d->parent);
const struct net_device *dev = to_net_dev(d->parent);
return dev_net(dev);
}

4
drivers/net/macvtap.c
View file

@ -35,9 +35,9 @@ struct macvtap_dev {
*/
static dev_t macvtap_major;
static const void *macvtap_net_namespace(struct device *d)
static const void *macvtap_net_namespace(const struct device *d)
{
struct net_device *dev = to_net_dev(d->parent);
const struct net_device *dev = to_net_dev(d->parent);
return dev_net(dev);
}

4
drivers/nvme/host/core.c
View file

@ -4599,9 +4599,9 @@ void nvme_remove_namespaces(struct nvme_ctrl *ctrl)
}
EXPORT_SYMBOL_GPL(nvme_remove_namespaces);
static int nvme_class_uevent(struct device *dev, struct kobj_uevent_env *env)
static int nvme_class_uevent(const struct device *dev, struct kobj_uevent_env *env)
{
struct nvme_ctrl *ctrl =
const struct nvme_ctrl *ctrl =
container_of(dev, struct nvme_ctrl, ctrl_device);
struct nvmf_ctrl_options *opts = ctrl->opts;
int ret;

6
drivers/of/device.c
View file

@ -332,10 +332,10 @@ EXPORT_SYMBOL_GPL(of_device_modalias);
/**
* of_device_uevent - Display OF related uevent information
* @dev: Device to apply DMA configuration
* @env: Kernel object's userspace event reference
* @dev: Device to display the uevent information for
* @env: Kernel object's userspace event reference to fill up
*/
void of_device_uevent(struct device *dev, struct kobj_uevent_env *env)
void of_device_uevent(const struct device *dev, struct kobj_uevent_env *env)
{
const char *compat, *type;
struct alias_prop *app;

4
drivers/pcmcia/cs.c
View file

@ -810,10 +810,10 @@ int pcmcia_reset_card(struct pcmcia_socket *skt)
EXPORT_SYMBOL(pcmcia_reset_card);
static int pcmcia_socket_uevent(struct device *dev,
static int pcmcia_socket_uevent(const struct device *dev,
struct kobj_uevent_env *env)
{
struct pcmcia_socket *s = container_of(dev, struct pcmcia_socket, dev);
const struct pcmcia_socket *s = container_of(dev, struct pcmcia_socket, dev);
if (add_uevent_var(env, "SOCKET_NO=%u", s->sock))
return -ENOMEM;

2
drivers/power/supply/power_supply.h
View file

@ -16,7 +16,7 @@ struct power_supply;
#ifdef CONFIG_SYSFS
extern void power_supply_init_attrs(struct device_type *dev_type);
extern int power_supply_uevent(struct device *dev, struct kobj_uevent_env *env);
extern int power_supply_uevent(const struct device *dev, struct kobj_uevent_env *env);
#else

8
drivers/power/supply/power_supply_sysfs.c
View file

@ -427,7 +427,7 @@ void power_supply_init_attrs(struct device_type *dev_type)
}
}
static int add_prop_uevent(struct device *dev, struct kobj_uevent_env *env,
static int add_prop_uevent(const struct device *dev, struct kobj_uevent_env *env,
enum power_supply_property prop, char *prop_buf)
{
int ret = 0;
@ -438,7 +438,7 @@ static int add_prop_uevent(struct device *dev, struct kobj_uevent_env *env,
pwr_attr = &power_supply_attrs[prop];
dev_attr = &pwr_attr->dev_attr;
ret = power_supply_show_property(dev, dev_attr, prop_buf);
ret = power_supply_show_property((struct device *)dev, dev_attr, prop_buf);
if (ret == -ENODEV || ret == -ENODATA) {
/*
* When a battery is absent, we expect -ENODEV. Don't abort;
@ -458,9 +458,9 @@ static int add_prop_uevent(struct device *dev, struct kobj_uevent_env *env,
pwr_attr->prop_name, prop_buf);
}
int power_supply_uevent(struct device *dev, struct kobj_uevent_env *env)
int power_supply_uevent(const struct device *dev, struct kobj_uevent_env *env)
{
struct power_supply *psy = dev_get_drvdata(dev);
const struct power_supply *psy = dev_get_drvdata(dev);
int ret = 0, j;
char *prop_buf;

2
drivers/s390/char/hmcdrv_dev.c
View file

@ -90,7 +90,7 @@ static dev_t hmcdrv_dev_no; /* device number (major/minor) */
*
* Return: recommended device file name in /dev
*/
static char *hmcdrv_dev_name(struct device *dev, umode_t *mode)
static char *hmcdrv_dev_name(const struct device *dev, umode_t *mode)
{
char *nodename = NULL;
const char *devname = dev_name(dev); /* kernel device name */

2
drivers/scsi/cxlflash/main.c
View file

@ -3857,7 +3857,7 @@ static void cxlflash_pci_resume(struct pci_dev *pdev)
*
* Return: Allocated string describing the devtmpfs structure.
*/
static char *cxlflash_devnode(struct device *dev, umode_t *mode)
static char *cxlflash_devnode(const struct device *dev, umode_t *mode)
{
return kasprintf(GFP_KERNEL, "cxlflash/%s", dev_name(dev));
}

2
drivers/tty/tty_io.c
View file

@ -3498,7 +3498,7 @@ void tty_default_fops(struct file_operations *fops)
*fops = tty_fops;
}
static char *tty_devnode(struct device *dev, umode_t *mode)
static char *tty_devnode(const struct device *dev, umode_t *mode)
{
if (!mode)
return NULL;

2
drivers/usb/class/usblp.c
View file

@ -1090,7 +1090,7 @@ static const struct file_operations usblp_fops = {
.llseek = noop_llseek,
};
static char *usblp_devnode(struct device *dev, umode_t *mode)
static char *usblp_devnode(const struct device *dev, umode_t *mode)
{
return kasprintf(GFP_KERNEL, "usb/%s", dev_name(dev));
}

2
drivers/usb/core/file.c
View file

@ -62,7 +62,7 @@ static struct usb_class {
struct class *class;
} *usb_class;
static char *usb_devnode(struct device *dev, umode_t *mode)
static char *usb_devnode(const struct device *dev, umode_t *mode)
{
struct usb_class_driver *drv;

4
drivers/usb/gadget/udc/core.c
View file

@ -1723,9 +1723,9 @@ static const struct attribute_group *usb_udc_attr_groups[] = {
NULL,
};
static int usb_udc_uevent(struct device *dev, struct kobj_uevent_env *env)
static int usb_udc_uevent(const struct device *dev, struct kobj_uevent_env *env)
{
struct usb_udc *udc = container_of(dev, struct usb_udc, dev);
const struct usb_udc *udc = container_of(dev, struct usb_udc, dev);
int ret;
ret = add_uevent_var(env, "USB_UDC_NAME=%s", udc->gadget->name);

2
drivers/usb/misc/iowarrior.c
View file

@ -717,7 +717,7 @@ static const struct file_operations iowarrior_fops = {
.llseek = noop_llseek,
};
static char *iowarrior_devnode(struct device *dev, umode_t *mode)
static char *iowarrior_devnode(const struct device *dev, umode_t *mode)
{
return kasprintf(GFP_KERNEL, "usb/%s", dev_name(dev));
}

2
drivers/usb/misc/legousbtower.c
View file

@ -245,7 +245,7 @@ static const struct file_operations tower_fops = {
.llseek = tower_llseek,
};
static char *legousbtower_devnode(struct device *dev, umode_t *mode)
static char *legousbtower_devnode(const struct device *dev, umode_t *mode)
{
return kasprintf(GFP_KERNEL, "usb/%s", dev_name(dev));
}

2
drivers/usb/roles/class.c
View file

@ -87,7 +87,7 @@ enum usb_role usb_role_switch_get_role(struct usb_role_switch *sw)
}
EXPORT_SYMBOL_GPL(usb_role_switch_get_role);
static void *usb_role_switch_match(struct fwnode_handle *fwnode, const char *id,
static void *usb_role_switch_match(const struct fwnode_handle *fwnode, const char *id,
void *data)
{
struct device *dev;

8
drivers/usb/typec/mux.c
View file

@ -32,8 +32,8 @@ static int switch_fwnode_match(struct device *dev, const void *fwnode)
return device_match_fwnode(dev, fwnode);
}
static void *typec_switch_match(struct fwnode_handle *fwnode, const char *id,
void *data)
static void *typec_switch_match(const struct fwnode_handle *fwnode,
const char *id, void *data)
{
struct device *dev;
@ -262,8 +262,8 @@ static int mux_fwnode_match(struct device *dev, const void *fwnode)
return device_match_fwnode(dev, fwnode);
}
static void *typec_mux_match(struct fwnode_handle *fwnode, const char *id,
void *data)
static void *typec_mux_match(const struct fwnode_handle *fwnode,
const char *id, void *data)
{
const struct typec_altmode_desc *desc = data;
struct device *dev;

2
drivers/usb/typec/retimer.c
View file

@ -22,7 +22,7 @@ static int retimer_fwnode_match(struct device *dev, const void *fwnode)
return is_typec_retimer(dev) && device_match_fwnode(dev, fwnode);
}
static void *typec_retimer_match(struct fwnode_handle *fwnode, const char *id, void *data)
static void *typec_retimer_match(const struct fwnode_handle *fwnode, const char *id, void *data)
{
struct device *dev;

2
drivers/vdpa/vdpa_user/vduse_dev.c
View file

@ -1656,7 +1656,7 @@ static const struct file_operations vduse_ctrl_fops = {
.llseek = noop_llseek,
};
static char *vduse_devnode(struct device *dev, umode_t *mode)
static char *vduse_devnode(const struct device *dev, umode_t *mode)
{
return kasprintf(GFP_KERNEL, "vduse/%s", dev_name(dev));
}

2
drivers/vfio/group.c
View file

@ -827,7 +827,7 @@ bool vfio_file_has_dev(struct file *file, struct vfio_device *device)
}
EXPORT_SYMBOL_GPL(vfio_file_has_dev);
static char *vfio_devnode(struct device *dev, umode_t *mode)
static char *vfio_devnode(const struct device *dev, umode_t *mode)
{
return kasprintf(GFP_KERNEL, "vfio/%s", dev_name(dev));
}

106
fs/kernfs/dir.c
View file

@ -125,9 +125,9 @@ static struct kernfs_node *kernfs_common_ancestor(struct kernfs_node *a,
* kn_to: /n1/n2/n3 [depth=3]
* result: /../..
*
* [3] when @kn_to is NULL result will be "(null)"
* [3] when @kn_to is %NULL result will be "(null)"
*
* Returns the length of the full path. If the full length is equal to or
* Return: the length of the full path. If the full length is equal to or
* greater than @buflen, @buf contains the truncated path with the trailing
* '\0'. On error, -errno is returned.
*/
@ -185,10 +185,12 @@ static int kernfs_path_from_node_locked(struct kernfs_node *kn_to,
* @buflen: size of @buf
*
* Copies the name of @kn into @buf of @buflen bytes. The behavior is
* similar to strlcpy(). It returns the length of @kn's name and if @buf
* isn't long enough, it's filled upto @buflen-1 and nul terminated.
* similar to strlcpy().
*
* Fills buffer with "(null)" if @kn is NULL.
* Fills buffer with "(null)" if @kn is %NULL.
*
* Return: the length of @kn's name and if @buf isn't long enough,
* it's filled up to @buflen-1 and nul terminated.
*
* This function can be called from any context.
*/
@ -215,7 +217,7 @@ int kernfs_name(struct kernfs_node *kn, char *buf, size_t buflen)
* path (which includes '..'s) as needed to reach from @from to @to is
* returned.
*
* Returns the length of the full path. If the full length is equal to or
* Return: the length of the full path. If the full length is equal to or
* greater than @buflen, @buf contains the truncated path with the trailing
* '\0'. On error, -errno is returned.
*/
@ -287,6 +289,8 @@ void pr_cont_kernfs_path(struct kernfs_node *kn)
*
* Determines @kn's parent, pins and returns it. This function can be
* called from any context.
*
* Return: parent node of @kn
*/
struct kernfs_node *kernfs_get_parent(struct kernfs_node *kn)
{
@ -302,11 +306,11 @@ struct kernfs_node *kernfs_get_parent(struct kernfs_node *kn)
}
/**
* kernfs_name_hash
* kernfs_name_hash - calculate hash of @ns + @name
* @name: Null terminated string to hash
* @ns: Namespace tag to hash
*
* Returns 31 bit hash of ns + name (so it fits in an off_t )
* Return: 31-bit hash of ns + name (so it fits in an off_t)
*/
static unsigned int kernfs_name_hash(const char *name, const void *ns)
{
@ -354,8 +358,8 @@ static int kernfs_sd_compare(const struct kernfs_node *left,
* Locking:
* kernfs_rwsem held exclusive
*
* RETURNS:
* 0 on susccess -EEXIST on failure.
* Return:
* %0 on success, -EEXIST on failure.
*/
static int kernfs_link_sibling(struct kernfs_node *kn)
{
@ -394,8 +398,10 @@ static int kernfs_link_sibling(struct kernfs_node *kn)
* @kn: kernfs_node of interest
*
* Try to unlink @kn from its sibling rbtree which starts from
* kn->parent->dir.children. Returns %true if @kn was actually
* removed, %false if @kn wasn't on the rbtree.
* kn->parent->dir.children.
*
* Return: %true if @kn was actually removed,
* %false if @kn wasn't on the rbtree.
*
* Locking:
* kernfs_rwsem held exclusive
@ -419,10 +425,10 @@ static bool kernfs_unlink_sibling(struct kernfs_node *kn)
* @kn: kernfs_node to get an active reference to
*
* Get an active reference of @kn. This function is noop if @kn
* is NULL.
* is %NULL.
*
* RETURNS:
* Pointer to @kn on success, NULL on failure.
* Return:
* Pointer to @kn on success, %NULL on failure.
*/
struct kernfs_node *kernfs_get_active(struct kernfs_node *kn)
{
@ -442,7 +448,7 @@ struct kernfs_node *kernfs_get_active(struct kernfs_node *kn)
* @kn: kernfs_node to put an active reference to
*
* Put an active reference to @kn. This function is noop if @kn
* is NULL.
* is %NULL.
*/
void kernfs_put_active(struct kernfs_node *kn)
{
@ -464,7 +470,7 @@ void kernfs_put_active(struct kernfs_node *kn)
* kernfs_drain - drain kernfs_node
* @kn: kernfs_node to drain
*
* Drain existing usages and nuke all existing mmaps of @kn. Mutiple
* Drain existing usages and nuke all existing mmaps of @kn. Multiple
* removers may invoke this function concurrently on @kn and all will
* return after draining is complete.
*/
@ -577,7 +583,7 @@ EXPORT_SYMBOL_GPL(kernfs_put);
* kernfs_node_from_dentry - determine kernfs_node associated with a dentry
* @dentry: the dentry in question
*
* Return the kernfs_node associated with @dentry. If @dentry is not a
* Return: the kernfs_node associated with @dentry. If @dentry is not a
* kernfs one, %NULL is returned.
*
* While the returned kernfs_node will stay accessible as long as @dentry
@ -684,8 +690,8 @@ struct kernfs_node *kernfs_new_node(struct kernfs_node *parent,
* @id's lower 32bits encode ino and upper gen. If the gen portion is
* zero, all generations are matched.
*
* RETURNS:
* NULL on failure. Return a kernfs node with reference counter incremented
* Return: %NULL on failure,
* otherwise a kernfs node with reference counter incremented.
*/
struct kernfs_node *kernfs_find_and_get_node_by_id(struct kernfs_root *root,
u64 id)
@ -733,8 +739,8 @@ struct kernfs_node *kernfs_find_and_get_node_by_id(struct kernfs_root *root,
* function increments nlink of the parent's inode if @kn is a
* directory and link into the children list of the parent.
*
* RETURNS:
* 0 on success, -EEXIST if entry with the given name already
* Return:
* %0 on success, -EEXIST if entry with the given name already
* exists.
*/
int kernfs_add_one(struct kernfs_node *kn)
@ -797,8 +803,9 @@ int kernfs_add_one(struct kernfs_node *kn)
* @name: name to look for
* @ns: the namespace tag to use
*
* Look for kernfs_node with name @name under @parent. Returns pointer to
* the found kernfs_node on success, %NULL on failure.
* Look for kernfs_node with name @name under @parent.
*
* Return: pointer to the found kernfs_node on success, %NULL on failure.
*/
static struct kernfs_node *kernfs_find_ns(struct kernfs_node *parent,
const unsigned char *name,
@ -871,8 +878,9 @@ static struct kernfs_node *kernfs_walk_ns(struct kernfs_node *parent,
* @ns: the namespace tag to use
*
* Look for kernfs_node with name @name under @parent and get a reference
* if found. This function may sleep and returns pointer to the found
* kernfs_node on success, %NULL on failure.
* if found. This function may sleep.
*
* Return: pointer to the found kernfs_node on success, %NULL on failure.
*/
struct kernfs_node *kernfs_find_and_get_ns(struct kernfs_node *parent,
const char *name, const void *ns)
@ -896,8 +904,9 @@ EXPORT_SYMBOL_GPL(kernfs_find_and_get_ns);
* @ns: the namespace tag to use
*
* Look for kernfs_node with path @path under @parent and get a reference
* if found. This function may sleep and returns pointer to the found
* kernfs_node on success, %NULL on failure.
* if found. This function may sleep.
*
* Return: pointer to the found kernfs_node on success, %NULL on failure.
*/
struct kernfs_node *kernfs_walk_and_get_ns(struct kernfs_node *parent,
const char *path, const void *ns)
@ -919,7 +928,7 @@ struct kernfs_node *kernfs_walk_and_get_ns(struct kernfs_node *parent,
* @flags: KERNFS_ROOT_* flags
* @priv: opaque data associated with the new directory
*
* Returns the root of the new hierarchy on success, ERR_PTR() value on
* Return: the root of the new hierarchy on success, ERR_PTR() value on
* failure.
*/
struct kernfs_root *kernfs_create_root(struct kernfs_syscall_ops *scops,
@ -991,6 +1000,8 @@ void kernfs_destroy_root(struct kernfs_root *root)
/**
* kernfs_root_to_node - return the kernfs_node associated with a kernfs_root
* @root: root to use to lookup
*
* Return: @root's kernfs_node
*/
struct kernfs_node *kernfs_root_to_node(struct kernfs_root *root)
{
@ -1007,7 +1018,7 @@ struct kernfs_node *kernfs_root_to_node(struct kernfs_root *root)
* @priv: opaque data associated with the new directory
* @ns: optional namespace tag of the directory
*
* Returns the created node on success, ERR_PTR() value on failure.
* Return: the created node on success, ERR_PTR() value on failure.
*/
struct kernfs_node *kernfs_create_dir_ns(struct kernfs_node *parent,
const char *name, umode_t mode,
@ -1041,7 +1052,7 @@ struct kernfs_node *kernfs_create_dir_ns(struct kernfs_node *parent,
* @parent: parent in which to create a new directory
* @name: name of the new directory
*
* Returns the created node on success, ERR_PTR() value on failure.
* Return: the created node on success, ERR_PTR() value on failure.
*/
struct kernfs_node *kernfs_create_empty_dir(struct kernfs_node *parent,
const char *name)
@ -1083,20 +1094,30 @@ static int kernfs_dop_revalidate(struct dentry *dentry, unsigned int flags)
/* If the kernfs parent node has changed discard and
* proceed to ->lookup.
*
* There's nothing special needed here when getting the
* dentry parent, even if a concurrent rename is in
* progress. That's because the dentry is negative so
* it can only be the target of the rename and it will
* be doing a d_move() not a replace. Consequently the
* dentry d_parent won't change over the d_move().
*
* Also kernfs negative dentries transitioning from
* negative to positive during revalidate won't happen
* because they are invalidated on containing directory
* changes and the lookup re-done so that a new positive
* dentry can be properly created.
*/
spin_lock(&dentry->d_lock);
root = kernfs_root_from_sb(dentry->d_sb);
down_read(&root->kernfs_rwsem);
parent = kernfs_dentry_node(dentry->d_parent);
if (parent) {
spin_unlock(&dentry->d_lock);
root = kernfs_root(parent);
down_read(&root->kernfs_rwsem);
if (kernfs_dir_changed(parent, dentry)) {
up_read(&root->kernfs_rwsem);
return 0;
}
up_read(&root->kernfs_rwsem);
} else
spin_unlock(&dentry->d_lock);
}
up_read(&root->kernfs_rwsem);
/* The kernfs parent node hasn't changed, leave the
* dentry negative and return success.
@ -1290,6 +1311,8 @@ static struct kernfs_node *kernfs_leftmost_descendant(struct kernfs_node *pos)
* Find the next descendant to visit for post-order traversal of @root's
* descendants. @root is included in the iteration and the last node to be
* visited.
*
* Return: the next descendant to visit or %NULL when done.
*/
static struct kernfs_node *kernfs_next_descendant_post(struct kernfs_node *pos,
struct kernfs_node *root)
@ -1553,6 +1576,8 @@ void kernfs_unbreak_active_protection(struct kernfs_node *kn)
* the whole kernfs_ops which won the arbitration. This can be used to
* guarantee, for example, all concurrent writes to a "delete" file to
* finish only after the whole operation is complete.
*
* Return: %true if @kn is removed by this call, otherwise %false.
*/
bool kernfs_remove_self(struct kernfs_node *kn)
{
@ -1613,7 +1638,8 @@ bool kernfs_remove_self(struct kernfs_node *kn)
* @ns: namespace tag of the kernfs_node to remove
*
* Look for the kernfs_node with @name and @ns under @parent and remove it.
* Returns 0 on success, -ENOENT if such entry doesn't exist.
*
* Return: %0 on success, -ENOENT if such entry doesn't exist.
*/
int kernfs_remove_by_name_ns(struct kernfs_node *parent, const char *name,
const void *ns)
@ -1651,6 +1677,8 @@ int kernfs_remove_by_name_ns(struct kernfs_node *parent, const char *name,
* @new_parent: new parent to put @sd under
* @new_name: new name
* @new_ns: new namespace tag
*
* Return: %0 on success, -errno on failure.
*/
int kernfs_rename_ns(struct kernfs_node *kn, struct kernfs_node *new_parent,
const char *new_name, const void *new_ns)

18
fs/kernfs/file.c
View file

@ -33,7 +33,7 @@ struct kernfs_open_node {
* pending queue is implemented as a singly linked list of kernfs_nodes.
* The list is terminated with the self pointer so that whether a
* kernfs_node is on the list or not can be determined by testing the next
* pointer for NULL.
* pointer for %NULL.
*/
#define KERNFS_NOTIFY_EOL ((void *)&kernfs_notify_list)
@ -59,8 +59,10 @@ static inline struct mutex *kernfs_open_file_mutex_lock(struct kernfs_node *kn)
}
/**
* of_on - Return the kernfs_open_node of the specified kernfs_open_file
* @of: taret kernfs_open_file
* of_on - Get the kernfs_open_node of the specified kernfs_open_file
* @of: target kernfs_open_file
*
* Return: the kernfs_open_node of the kernfs_open_file
*/
static struct kernfs_open_node *of_on(struct kernfs_open_file *of)
{
@ -82,6 +84,8 @@ static struct kernfs_open_node *of_on(struct kernfs_open_file *of)
* outside RCU read-side critical section.
*
* The caller needs to make sure that kernfs_open_file_mutex is held.
*
* Return: @kn->attr.open when kernfs_open_file_mutex is held.
*/
static struct kernfs_open_node *
kernfs_deref_open_node_locked(struct kernfs_node *kn)
@ -548,11 +552,11 @@ static int kernfs_fop_mmap(struct file *file, struct vm_area_struct *vma)
* If @kn->attr.open exists, increment its reference count; otherwise,
* create one. @of is chained to the files list.
*
* LOCKING:
* Locking:
* Kernel thread context (may sleep).
*
* RETURNS:
* 0 on success, -errno on failure.
* Return:
* %0 on success, -errno on failure.
*/
static int kernfs_get_open_node(struct kernfs_node *kn,
struct kernfs_open_file *of)
@ -1024,7 +1028,7 @@ const struct file_operations kernfs_file_fops = {
* @ns: optional namespace tag of the file
* @key: lockdep key for the file's active_ref, %NULL to disable lockdep
*
* Returns the created node on success, ERR_PTR() value on error.
* Return: the created node on success, ERR_PTR() value on error.
*/
struct kernfs_node *__kernfs_create_file(struct kernfs_node *parent,
const char *name,

12
fs/kernfs/inode.c
View file

@ -94,7 +94,7 @@ int __kernfs_setattr(struct kernfs_node *kn, const struct iattr *iattr)
* @kn: target node
* @iattr: iattr to set
*
* Returns 0 on success, -errno on failure.
* Return: %0 on success, -errno on failure.
*/
int kernfs_setattr(struct kernfs_node *kn, const struct iattr *iattr)
{
@ -190,10 +190,8 @@ int kernfs_iop_getattr(struct user_namespace *mnt_userns,
struct kernfs_root *root = kernfs_root(kn);
down_read(&root->kernfs_rwsem);
spin_lock(&inode->i_lock);
kernfs_refresh_inode(kn, inode);
generic_fillattr(&init_user_ns, inode, stat);
spin_unlock(&inode->i_lock);
up_read(&root->kernfs_rwsem);
return 0;
@ -241,11 +239,11 @@ static void kernfs_init_inode(struct kernfs_node *kn, struct inode *inode)
* allocated and basics are initialized. New inode is returned
* locked.
*
* LOCKING:
* Locking:
* Kernel thread context (may sleep).
*
* RETURNS:
* Pointer to allocated inode on success, NULL on failure.
* Return:
* Pointer to allocated inode on success, %NULL on failure.
*/
struct inode *kernfs_get_inode(struct super_block *sb, struct kernfs_node *kn)
{
@ -288,10 +286,8 @@ int kernfs_iop_permission(struct user_namespace *mnt_userns,
root = kernfs_root(kn);
down_read(&root->kernfs_rwsem);
spin_lock(&inode->i_lock);
kernfs_refresh_inode(kn, inode);
ret = generic_permission(&init_user_ns, inode, mask);
spin_unlock(&inode->i_lock);
up_read(&root->kernfs_rwsem);
return ret;

2
fs/kernfs/kernfs-internal.h
View file

@ -58,7 +58,7 @@ struct kernfs_root {
* kernfs_root - find out the kernfs_root a kernfs_node belongs to
* @kn: kernfs_node of interest
*
* Return the kernfs_root @kn belongs to.
* Return: the kernfs_root @kn belongs to.
*/
static inline struct kernfs_root *kernfs_root(struct kernfs_node *kn)
{

10
fs/kernfs/mount.c
View file

@ -153,7 +153,7 @@ static const struct export_operations kernfs_export_ops = {
* kernfs_root_from_sb - determine kernfs_root associated with a super_block
* @sb: the super_block in question
*
* Return the kernfs_root associated with @sb. If @sb is not a kernfs one,
* Return: the kernfs_root associated with @sb. If @sb is not a kernfs one,
* %NULL is returned.
*/
struct kernfs_root *kernfs_root_from_sb(struct super_block *sb)
@ -167,7 +167,7 @@ struct kernfs_root *kernfs_root_from_sb(struct super_block *sb)
* find the next ancestor in the path down to @child, where @parent was the
* ancestor whose descendant we want to find.
*
* Say the path is /a/b/c/d. @child is d, @parent is NULL. We return the root
* Say the path is /a/b/c/d. @child is d, @parent is %NULL. We return the root
* node. If @parent is b, then we return the node for c.
* Passing in d as @parent is not ok.
*/
@ -192,6 +192,8 @@ static struct kernfs_node *find_next_ancestor(struct kernfs_node *child,
* kernfs_node_dentry - get a dentry for the given kernfs_node
* @kn: kernfs_node for which a dentry is needed
* @sb: the kernfs super_block
*
* Return: the dentry pointer
*/
struct dentry *kernfs_node_dentry(struct kernfs_node *kn,
struct super_block *sb)
@ -296,7 +298,7 @@ static int kernfs_set_super(struct super_block *sb, struct fs_context *fc)
* kernfs_super_ns - determine the namespace tag of a kernfs super_block
* @sb: super_block of interest
*
* Return the namespace tag associated with kernfs super_block @sb.
* Return: the namespace tag associated with kernfs super_block @sb.
*/
const void *kernfs_super_ns(struct super_block *sb)
{
@ -313,6 +315,8 @@ const void *kernfs_super_ns(struct super_block *sb)
* implementation, which should set the specified ->@fs_type and ->@flags, and
* specify the hierarchy and namespace tag to mount via ->@root and ->@ns,
* respectively.
*
* Return: %0 on success, -errno on failure.
*/
int kernfs_get_tree(struct fs_context *fc)
{

2
fs/kernfs/symlink.c
View file

@ -19,7 +19,7 @@
* @name: name of the symlink
* @target: target node for the symlink to point to
*
* Returns the created node on success, ERR_PTR() value on error.
* Return: the created node on success, ERR_PTR() value on error.
* Ownership of the link matches ownership of the target.
*/
struct kernfs_node *kernfs_create_link(struct kernfs_node *parent,

4
fs/nfs/sysfs.c
View file

@ -26,7 +26,7 @@ static void nfs_netns_object_release(struct kobject *kobj)
}
static const struct kobj_ns_type_operations *nfs_netns_object_child_ns_type(
struct kobject *kobj)
const struct kobject *kobj)
{
return &net_ns_type_operations;
}
@ -130,7 +130,7 @@ static void nfs_netns_client_release(struct kobject *kobj)
kfree(c);
}
static const void *nfs_netns_client_namespace(struct kobject *kobj)
static const void *nfs_netns_client_namespace(const struct kobject *kobj)
{
return container_of(kobj, struct nfs_netns_client, kobject)->net;
}

2
fs/pstore/pmsg.c
View file

@ -46,7 +46,7 @@ static int pmsg_major;
#undef pr_fmt
#define pr_fmt(fmt) PMSG_NAME ": " fmt
static char *pmsg_devnode(struct device *dev, umode_t *mode)
static char *pmsg_devnode(const struct device *dev, umode_t *mode)
{
if (mode)
*mode = 0220;

234
include/asm-generic/vmlinux.lds.h
View file

@ -199,100 +199,114 @@
# endif
#endif
#define BOUNDED_SECTION_PRE_LABEL(_sec_, _label_, _BEGIN_, _END_) \
_BEGIN_##_label_ = .; \
KEEP(*(_sec_)) \
_END_##_label_ = .;
#define BOUNDED_SECTION_POST_LABEL(_sec_, _label_, _BEGIN_, _END_) \
_label_##_BEGIN_ = .; \
KEEP(*(_sec_)) \
_label_##_END_ = .;
#define BOUNDED_SECTION_BY(_sec_, _label_) \
BOUNDED_SECTION_PRE_LABEL(_sec_, _label_, __start, __stop)
#define BOUNDED_SECTION(_sec) BOUNDED_SECTION_BY(_sec, _sec)
#define HEADERED_SECTION_PRE_LABEL(_sec_, _label_, _BEGIN_, _END_, _HDR_) \
_HDR_##_label_ = .; \
KEEP(*(.gnu.linkonce.##_sec_)) \
BOUNDED_SECTION_PRE_LABEL(_sec_, _label_, _BEGIN_, _END_)
#define HEADERED_SECTION_POST_LABEL(_sec_, _label_, _BEGIN_, _END_, _HDR_) \
_label_##_HDR_ = .; \
KEEP(*(.gnu.linkonce.##_sec_)) \
BOUNDED_SECTION_POST_LABEL(_sec_, _label_, _BEGIN_, _END_)
#define HEADERED_SECTION_BY(_sec_, _label_) \
HEADERED_SECTION_PRE_LABEL(_sec_, _label_, __start, __stop)
#define HEADERED_SECTION(_sec) HEADERED_SECTION_BY(_sec, _sec)
#ifdef CONFIG_TRACE_BRANCH_PROFILING
#define LIKELY_PROFILE() __start_annotated_branch_profile = .; \
KEEP(*(_ftrace_annotated_branch)) \
__stop_annotated_branch_profile = .;
#define LIKELY_PROFILE() \
BOUNDED_SECTION_BY(_ftrace_annotated_branch, _annotated_branch_profile)
#else
#define LIKELY_PROFILE()
#endif
#ifdef CONFIG_PROFILE_ALL_BRANCHES
#define BRANCH_PROFILE() __start_branch_profile = .; \
KEEP(*(_ftrace_branch)) \
__stop_branch_profile = .;
#define BRANCH_PROFILE() \
BOUNDED_SECTION_BY(_ftrace_branch, _branch_profile)
#else
#define BRANCH_PROFILE()
#endif
#ifdef CONFIG_KPROBES
#define KPROBE_BLACKLIST() . = ALIGN(8); \
__start_kprobe_blacklist = .; \
KEEP(*(_kprobe_blacklist)) \
__stop_kprobe_blacklist = .;
#define KPROBE_BLACKLIST() \
. = ALIGN(8); \
BOUNDED_SECTION(_kprobe_blacklist)
#else
#define KPROBE_BLACKLIST()
#endif
#ifdef CONFIG_FUNCTION_ERROR_INJECTION
#define ERROR_INJECT_WHITELIST() STRUCT_ALIGN(); \
__start_error_injection_whitelist = .; \
KEEP(*(_error_injection_whitelist)) \
__stop_error_injection_whitelist = .;
#define ERROR_INJECT_WHITELIST() \
STRUCT_ALIGN(); \
BOUNDED_SECTION(_error_injection_whitelist)
#else
#define ERROR_INJECT_WHITELIST()
#endif
#ifdef CONFIG_EVENT_TRACING
#define FTRACE_EVENTS() . = ALIGN(8); \
__start_ftrace_events = .; \
KEEP(*(_ftrace_events)) \
__stop_ftrace_events = .; \
__start_ftrace_eval_maps = .; \
KEEP(*(_ftrace_eval_map)) \
__stop_ftrace_eval_maps = .;
#define FTRACE_EVENTS() \
. = ALIGN(8); \
BOUNDED_SECTION(_ftrace_events) \
BOUNDED_SECTION_BY(_ftrace_eval_map, _ftrace_eval_maps)
#else
#define FTRACE_EVENTS()
#endif
#ifdef CONFIG_TRACING
#define TRACE_PRINTKS() __start___trace_bprintk_fmt = .; \
KEEP(*(__trace_printk_fmt)) /* Trace_printk fmt' pointer */ \
__stop___trace_bprintk_fmt = .;
#define TRACEPOINT_STR() __start___tracepoint_str = .; \
KEEP(*(__tracepoint_str)) /* Trace_printk fmt' pointer */ \
__stop___tracepoint_str = .;
#define TRACE_PRINTKS() BOUNDED_SECTION_BY(__trace_printk_fmt, ___trace_bprintk_fmt)
#define TRACEPOINT_STR() BOUNDED_SECTION_BY(__tracepoint_str, ___tracepoint_str)
#else
#define TRACE_PRINTKS()
#define TRACEPOINT_STR()
#endif
#ifdef CONFIG_FTRACE_SYSCALLS
#define TRACE_SYSCALLS() . = ALIGN(8); \
__start_syscalls_metadata = .; \
KEEP(*(__syscalls_metadata)) \
__stop_syscalls_metadata = .;
#define TRACE_SYSCALLS() \
. = ALIGN(8); \
BOUNDED_SECTION_BY(__syscalls_metadata, _syscalls_metadata)
#else
#define TRACE_SYSCALLS()
#endif
#ifdef CONFIG_BPF_EVENTS
#define BPF_RAW_TP() STRUCT_ALIGN(); \
__start__bpf_raw_tp = .; \
KEEP(*(__bpf_raw_tp_map)) \
__stop__bpf_raw_tp = .;
#define BPF_RAW_TP() STRUCT_ALIGN(); \
BOUNDED_SECTION_BY(__bpf_raw_tp_map, __bpf_raw_tp)
#else
#define BPF_RAW_TP()
#endif
#ifdef CONFIG_SERIAL_EARLYCON
#define EARLYCON_TABLE() . = ALIGN(8); \
__earlycon_table = .; \
KEEP(*(__earlycon_table)) \
__earlycon_table_end = .;
#define EARLYCON_TABLE() \
. = ALIGN(8); \
BOUNDED_SECTION_POST_LABEL(__earlycon_table, __earlycon_table, , _end)
#else
#define EARLYCON_TABLE()
#endif
#ifdef CONFIG_SECURITY
#define LSM_TABLE() . = ALIGN(8); \
__start_lsm_info = .; \
KEEP(*(.lsm_info.init)) \
__end_lsm_info = .;
#define EARLY_LSM_TABLE() . = ALIGN(8); \
__start_early_lsm_info = .; \
KEEP(*(.early_lsm_info.init)) \
__end_early_lsm_info = .;
#define LSM_TABLE() \
. = ALIGN(8); \
BOUNDED_SECTION_PRE_LABEL(.lsm_info.init, _lsm_info, __start, __end)
#define EARLY_LSM_TABLE() \
. = ALIGN(8); \
BOUNDED_SECTION_PRE_LABEL(.early_lsm_info.init, _early_lsm_info, __start, __end)
#else
#define LSM_TABLE()
#define EARLY_LSM_TABLE()
@ -318,9 +332,8 @@
#ifdef CONFIG_ACPI
#define ACPI_PROBE_TABLE(name) \
. = ALIGN(8); \
__##name##_acpi_probe_table = .; \
KEEP(*(__##name##_acpi_probe_table)) \
__##name##_acpi_probe_table_end = .;
BOUNDED_SECTION_POST_LABEL(__##name##_acpi_probe_table, \
__##name##_acpi_probe_table,, _end)
#else
#define ACPI_PROBE_TABLE(name)
#endif
@ -328,9 +341,8 @@
#ifdef CONFIG_THERMAL
#define THERMAL_TABLE(name) \
. = ALIGN(8); \
__##name##_thermal_table = .; \
KEEP(*(__##name##_thermal_table)) \
__##name##_thermal_table_end = .;
BOUNDED_SECTION_POST_LABEL(__##name##_thermal_table, \
__##name##_thermal_table,, _end)
#else
#define THERMAL_TABLE(name)
#endif
@ -360,12 +372,8 @@
*(__tracepoints) \
/* implement dynamic printk debug */ \
. = ALIGN(8); \
__start___dyndbg_classes = .; \
KEEP(*(__dyndbg_classes)) \
__stop___dyndbg_classes = .; \
__start___dyndbg = .; \
KEEP(*(__dyndbg)) \
__stop___dyndbg = .; \
BOUNDED_SECTION_BY(__dyndbg_classes, ___dyndbg_classes) \
BOUNDED_SECTION_BY(__dyndbg, ___dyndbg) \
LIKELY_PROFILE() \
BRANCH_PROFILE() \
TRACE_PRINTKS() \
@ -408,19 +416,13 @@
#define JUMP_TABLE_DATA \
. = ALIGN(8); \
__start___jump_table = .; \
KEEP(*(__jump_table)) \
__stop___jump_table = .;
BOUNDED_SECTION_BY(__jump_table, ___jump_table)
#ifdef CONFIG_HAVE_STATIC_CALL_INLINE
#define STATIC_CALL_DATA \
. = ALIGN(8); \
__start_static_call_sites = .; \
KEEP(*(.static_call_sites)) \
__stop_static_call_sites = .; \
__start_static_call_tramp_key = .; \
KEEP(*(.static_call_tramp_key)) \
__stop_static_call_tramp_key = .;
BOUNDED_SECTION_BY(.static_call_sites, _static_call_sites) \
BOUNDED_SECTION_BY(.static_call_tramp_key, _static_call_tramp_key)
#else
#define STATIC_CALL_DATA
#endif
@ -446,9 +448,7 @@
#ifdef CONFIG_ARCH_USES_CFI_TRAPS
#define KCFI_TRAPS \
__kcfi_traps : AT(ADDR(__kcfi_traps) - LOAD_OFFSET) { \
__start___kcfi_traps = .; \
KEEP(*(.kcfi_traps)) \
__stop___kcfi_traps = .; \
BOUNDED_SECTION_BY(.kcfi_traps, ___kcfi_traps) \
}
#else
#define KCFI_TRAPS
@ -466,9 +466,7 @@
SCHED_DATA \
RO_AFTER_INIT_DATA /* Read only after init */ \
. = ALIGN(8); \
__start___tracepoints_ptrs = .; \
KEEP(*(__tracepoints_ptrs)) /* Tracepoints: pointer array */ \
__stop___tracepoints_ptrs = .; \
BOUNDED_SECTION_BY(__tracepoints_ptrs, ___tracepoints_ptrs) \
*(__tracepoints_strings)/* Tracepoints: strings */ \
} \
\
@ -478,30 +476,14 @@
\
/* PCI quirks */ \
.pci_fixup : AT(ADDR(.pci_fixup) - LOAD_OFFSET) { \
__start_pci_fixups_early = .; \
KEEP(*(.pci_fixup_early)) \
__end_pci_fixups_early = .; \
__start_pci_fixups_header = .; \
KEEP(*(.pci_fixup_header)) \
__end_pci_fixups_header = .; \
__start_pci_fixups_final = .; \
KEEP(*(.pci_fixup_final)) \
__end_pci_fixups_final = .; \
__start_pci_fixups_enable = .; \
KEEP(*(.pci_fixup_enable)) \
__end_pci_fixups_enable = .; \
__start_pci_fixups_resume = .; \
KEEP(*(.pci_fixup_resume)) \
__end_pci_fixups_resume = .; \
__start_pci_fixups_resume_early = .; \
KEEP(*(.pci_fixup_resume_early)) \
__end_pci_fixups_resume_early = .; \
__start_pci_fixups_suspend = .; \
KEEP(*(.pci_fixup_suspend)) \
__end_pci_fixups_suspend = .; \
__start_pci_fixups_suspend_late = .; \
KEEP(*(.pci_fixup_suspend_late)) \
__end_pci_fixups_suspend_late = .; \
BOUNDED_SECTION_PRE_LABEL(.pci_fixup_early, _pci_fixups_early, __start, __end) \
BOUNDED_SECTION_PRE_LABEL(.pci_fixup_header, _pci_fixups_header, __start, __end) \
BOUNDED_SECTION_PRE_LABEL(.pci_fixup_final, _pci_fixups_final, __start, __end) \
BOUNDED_SECTION_PRE_LABEL(.pci_fixup_enable, _pci_fixups_enable, __start, __end) \
BOUNDED_SECTION_PRE_LABEL(.pci_fixup_resume, _pci_fixups_resume, __start, __end) \
BOUNDED_SECTION_PRE_LABEL(.pci_fixup_suspend, _pci_fixups_suspend, __start, __end) \
BOUNDED_SECTION_PRE_LABEL(.pci_fixup_resume_early, _pci_fixups_resume_early, __start, __end) \
BOUNDED_SECTION_PRE_LABEL(.pci_fixup_suspend_late, _pci_fixups_suspend_late, __start, __end) \
} \
\
FW_LOADER_BUILT_IN_DATA \
@ -551,16 +533,12 @@
\
/* Built-in module parameters. */ \
__param : AT(ADDR(__param) - LOAD_OFFSET) { \
__start___param = .; \
KEEP(*(__param)) \
__stop___param = .; \
BOUNDED_SECTION_BY(__param, ___param) \
} \
\
/* Built-in module versions. */ \
__modver : AT(ADDR(__modver) - LOAD_OFFSET) { \
__start___modver = .; \
KEEP(*(__modver)) \
__stop___modver = .; \
BOUNDED_SECTION_BY(__modver, ___modver) \
} \
\
KCFI_TRAPS \
@ -670,9 +648,7 @@
#define EXCEPTION_TABLE(align) \
. = ALIGN(align); \
__ex_table : AT(ADDR(__ex_table) - LOAD_OFFSET) { \
__start___ex_table = .; \
KEEP(*(__ex_table)) \
__stop___ex_table = .; \
BOUNDED_SECTION_BY(__ex_table, ___ex_table) \
}
/*
@ -681,9 +657,7 @@
#ifdef CONFIG_DEBUG_INFO_BTF
#define BTF \
.BTF : AT(ADDR(.BTF) - LOAD_OFFSET) { \
__start_BTF = .; \
KEEP(*(.BTF)) \
__stop_BTF = .; \
BOUNDED_SECTION_BY(.BTF, _BTF) \
} \
. = ALIGN(4); \
.BTF_ids : AT(ADDR(.BTF_ids) - LOAD_OFFSET) { \
@ -860,9 +834,7 @@
#define BUG_TABLE \
. = ALIGN(8); \
__bug_table : AT(ADDR(__bug_table) - LOAD_OFFSET) { \
__start___bug_table = .; \
KEEP(*(__bug_table)) \
__stop___bug_table = .; \
BOUNDED_SECTION_BY(__bug_table, ___bug_table) \
}
#else
#define BUG_TABLE
@ -872,15 +844,11 @@
#define ORC_UNWIND_TABLE \
. = ALIGN(4); \
.orc_unwind_ip : AT(ADDR(.orc_unwind_ip) - LOAD_OFFSET) { \
__start_orc_unwind_ip = .; \
KEEP(*(.orc_unwind_ip)) \
__stop_orc_unwind_ip = .; \
BOUNDED_SECTION_BY(.orc_unwind_ip, _orc_unwind_ip) \
} \
. = ALIGN(2); \
.orc_unwind : AT(ADDR(.orc_unwind) - LOAD_OFFSET) { \
__start_orc_unwind = .; \
KEEP(*(.orc_unwind)) \
__stop_orc_unwind = .; \
BOUNDED_SECTION_BY(.orc_unwind, _orc_unwind) \
} \
text_size = _etext - _stext; \
. = ALIGN(4); \
@ -898,9 +866,7 @@
#ifdef CONFIG_FW_LOADER
#define FW_LOADER_BUILT_IN_DATA \
.builtin_fw : AT(ADDR(.builtin_fw) - LOAD_OFFSET) ALIGN(8) { \
__start_builtin_fw = .; \
KEEP(*(.builtin_fw)) \
__end_builtin_fw = .; \
BOUNDED_SECTION_PRE_LABEL(.builtin_fw, _builtin_fw, __start, __end) \
}
#else
#define FW_LOADER_BUILT_IN_DATA
@ -910,9 +876,7 @@
#define TRACEDATA \
. = ALIGN(4); \
.tracedata : AT(ADDR(.tracedata) - LOAD_OFFSET) { \
__tracedata_start = .; \
KEEP(*(.tracedata)) \
__tracedata_end = .; \
BOUNDED_SECTION_POST_LABEL(.tracedata, __tracedata, _start, _end) \
}
#else
#define TRACEDATA
@ -921,9 +885,7 @@
#ifdef CONFIG_PRINTK_INDEX
#define PRINTK_INDEX \
.printk_index : AT(ADDR(.printk_index) - LOAD_OFFSET) { \
__start_printk_index = .; \
*(.printk_index) \
__stop_printk_index = .; \
BOUNDED_SECTION_BY(.printk_index, _printk_index) \
}
#else
#define PRINTK_INDEX
@ -931,17 +893,13 @@
#define NOTES \
.notes : AT(ADDR(.notes) - LOAD_OFFSET) { \
__start_notes = .; \
KEEP(*(.note.*)) \
__stop_notes = .; \
BOUNDED_SECTION_BY(.note.*, _notes) \
} NOTES_HEADERS \
NOTES_HEADERS_RESTORE
#define INIT_SETUP(initsetup_align) \
. = ALIGN(initsetup_align); \
__setup_start = .; \
KEEP(*(.init.setup)) \
__setup_end = .;
BOUNDED_SECTION_POST_LABEL(.init.setup, __setup, _start, _end)
#define INIT_CALLS_LEVEL(level) \
__initcall##level##_start = .; \
@ -963,16 +921,12 @@
__initcall_end = .;
#define CON_INITCALL \
__con_initcall_start = .; \
KEEP(*(.con_initcall.init)) \
__con_initcall_end = .;
BOUNDED_SECTION_POST_LABEL(.con_initcall.init, __con_initcall, _start, _end)
/* Alignment must be consistent with (kunit_suite *) in include/kunit/test.h */
#define KUNIT_TABLE() \
. = ALIGN(8); \
__kunit_suites_start = .; \
KEEP(*(.kunit_test_suites)) \
__kunit_suites_end = .;
BOUNDED_SECTION_POST_LABEL(.kunit_test_suites, __kunit_suites, _start, _end)
#ifdef CONFIG_BLK_DEV_INITRD
#define INIT_RAM_FS \

24
include/linux/container_of.h
View file

@ -13,6 +13,7 @@
* @type: the type of the container struct this is embedded in.
* @member: the name of the member within the struct.
*
* WARNING: any const qualifier of @ptr is lost.
*/
#define container_of(ptr, type, member) ({ \
void *__mptr = (void *)(ptr); \
@ -22,19 +23,16 @@
((type *)(__mptr - offsetof(type, member))); })
/**
* container_of_safe - cast a member of a structure out to the containing structure
* @ptr: the pointer to the member.
* @type: the type of the container struct this is embedded in.
* @member: the name of the member within the struct.
*
* If IS_ERR_OR_NULL(ptr), ptr is returned unchanged.
* container_of_const - cast a member of a structure out to the containing
* structure and preserve the const-ness of the pointer
* @ptr: the pointer to the member
* @type: the type of the container struct this is embedded in.
* @member: the name of the member within the struct.
*/
#define container_of_safe(ptr, type, member) ({ \
void *__mptr = (void *)(ptr); \
static_assert(__same_type(*(ptr), ((type *)0)->member) || \
__same_type(*(ptr), void), \
"pointer type mismatch in container_of_safe()"); \
IS_ERR_OR_NULL(__mptr) ? ERR_CAST(__mptr) : \
((type *)(__mptr - offsetof(type, member))); })
#define container_of_const(ptr, type, member) \
_Generic(ptr, \
const typeof(*(ptr)) *: ((const type *)container_of(ptr, type, member)),\
default: ((type *)container_of(ptr, type, member)) \
)
#endif /* _LINUX_CONTAINER_OF_H */

9
include/linux/device.h
View file

@ -679,10 +679,7 @@ struct device_link {
bool supplier_preactivated; /* Owned by consumer probe. */
};
static inline struct device *kobj_to_dev(struct kobject *kobj)
{
return container_of(kobj, struct device, kobj);
}
#define kobj_to_dev(__kobj) container_of_const(__kobj, struct device, kobj)
/**
* device_iommu_mapped - Returns true when the device DMA is translated
@ -1045,12 +1042,8 @@ static inline void device_remove_group(struct device *dev,
int __must_check devm_device_add_groups(struct device *dev,
const struct attribute_group **groups);
void devm_device_remove_groups(struct device *dev,
const struct attribute_group **groups);
int __must_check devm_device_add_group(struct device *dev,
const struct attribute_group *grp);
void devm_device_remove_group(struct device *dev,
const struct attribute_group *grp);
/*
* Platform "fixup" functions - allow the platform to have their say

8
include/linux/device/class.h
View file

@ -59,8 +59,8 @@ struct class {
const struct attribute_group **dev_groups;
struct kobject *dev_kobj;
int (*dev_uevent)(struct device *dev, struct kobj_uevent_env *env);
char *(*devnode)(struct device *dev, umode_t *mode);
int (*dev_uevent)(const struct device *dev, struct kobj_uevent_env *env);
char *(*devnode)(const struct device *dev, umode_t *mode);
void (*class_release)(struct class *class);
void (*dev_release)(struct device *dev);
@ -68,9 +68,9 @@ struct class {
int (*shutdown_pre)(struct device *dev);
const struct kobj_ns_type_operations *ns_type;
const void *(*namespace)(struct device *dev);
const void *(*namespace)(const struct device *dev);
void (*get_ownership)(struct device *dev, kuid_t *uid, kgid_t *gid);
void (*get_ownership)(const struct device *dev, kuid_t *uid, kgid_t *gid);
const struct dev_pm_ops *pm;

2
include/linux/ioport.h
View file

@ -155,7 +155,7 @@ enum {
/* helpers to define resources */
#define DEFINE_RES_NAMED(_start, _size, _name, _flags) \
{ \
(struct resource) { \
.start = (_start), \
.end = (_start) + (_size) - 1, \
.name = (_name), \

18
include/linux/kobject.h
View file

@ -112,18 +112,18 @@ extern struct kobject * __must_check kobject_get_unless_zero(
struct kobject *kobj);
extern void kobject_put(struct kobject *kobj);
extern const void *kobject_namespace(struct kobject *kobj);
extern void kobject_get_ownership(struct kobject *kobj,
extern const void *kobject_namespace(const struct kobject *kobj);
extern void kobject_get_ownership(const struct kobject *kobj,
kuid_t *uid, kgid_t *gid);
extern char *kobject_get_path(struct kobject *kobj, gfp_t flag);
extern char *kobject_get_path(const struct kobject *kobj, gfp_t flag);
struct kobj_type {
void (*release)(struct kobject *kobj);
const struct sysfs_ops *sysfs_ops;
const struct attribute_group **default_groups;
const struct kobj_ns_type_operations *(*child_ns_type)(struct kobject *kobj);
const void *(*namespace)(struct kobject *kobj);
void (*get_ownership)(struct kobject *kobj, kuid_t *uid, kgid_t *gid);
const struct kobj_ns_type_operations *(*child_ns_type)(const struct kobject *kobj);
const void *(*namespace)(const struct kobject *kobj);
void (*get_ownership)(const struct kobject *kobj, kuid_t *uid, kgid_t *gid);
};
struct kobj_uevent_env {
@ -135,8 +135,8 @@ struct kobj_uevent_env {
};
struct kset_uevent_ops {
int (* const filter)(struct kobject *kobj);
const char *(* const name)(struct kobject *kobj);
int (* const filter)(const struct kobject *kobj);
const char *(* const name)(const struct kobject *kobj);
int (* const uevent)(struct kobject *kobj, struct kobj_uevent_env *env);
};
@ -198,7 +198,7 @@ static inline void kset_put(struct kset *k)
kobject_put(&k->kobj);
}
static inline const struct kobj_type *get_ktype(struct kobject *kobj)
static inline const struct kobj_type *get_ktype(const struct kobject *kobj)
{
return kobj->ktype;
}

4
include/linux/kobject_ns.h
View file

@ -47,8 +47,8 @@ struct kobj_ns_type_operations {
int kobj_ns_type_register(const struct kobj_ns_type_operations *ops);
int kobj_ns_type_registered(enum kobj_ns_type type);
const struct kobj_ns_type_operations *kobj_child_ns_ops(struct kobject *parent);
const struct kobj_ns_type_operations *kobj_ns_ops(struct kobject *kobj);
const struct kobj_ns_type_operations *kobj_child_ns_ops(const struct kobject *parent);
const struct kobj_ns_type_operations *kobj_ns_ops(const struct kobject *kobj);
bool kobj_ns_current_may_mount(enum kobj_ns_type type);
void *kobj_ns_grab_current(enum kobj_ns_type type);

2
include/linux/mISDNif.h
View file

@ -586,7 +586,7 @@ extern struct mISDNclock *mISDN_register_clock(char *, int, clockctl_func_t *,
void *);
extern void mISDN_unregister_clock(struct mISDNclock *);
static inline struct mISDNdevice *dev_to_mISDN(struct device *dev)
static inline struct mISDNdevice *dev_to_mISDN(const struct device *dev)
{
if (dev)
return dev_get_drvdata(dev);

4
include/linux/of_device.h
View file

@ -35,7 +35,7 @@ extern const void *of_device_get_match_data(const struct device *dev);
extern ssize_t of_device_modalias(struct device *dev, char *str, ssize_t len);
extern int of_device_request_module(struct device *dev);
extern void of_device_uevent(struct device *dev, struct kobj_uevent_env *env);
extern void of_device_uevent(const struct device *dev, struct kobj_uevent_env *env);
extern int of_device_uevent_modalias(struct device *dev, struct kobj_uevent_env *env);
static inline struct device_node *of_cpu_device_node_get(int cpu)
@ -64,7 +64,7 @@ static inline int of_driver_match_device(struct device *dev,
return 0;
}
static inline void of_device_uevent(struct device *dev,
static inline void of_device_uevent(const struct device *dev,
struct kobj_uevent_env *env) { }
static inline const void *of_device_get_match_data(const struct device *dev)

84
include/linux/property.h
View file

@ -12,6 +12,7 @@
#include <linux/bits.h>
#include <linux/fwnode.h>
#include <linux/stddef.h>
#include <linux/types.h>
struct device;
@ -32,7 +33,12 @@ enum dev_dma_attr {
DEV_DMA_COHERENT,
};
struct fwnode_handle *dev_fwnode(const struct device *dev);
const struct fwnode_handle *__dev_fwnode_const(const struct device *dev);
struct fwnode_handle *__dev_fwnode(struct device *dev);
#define dev_fwnode(dev) \
_Generic((dev), \
const struct device *: __dev_fwnode_const, \
struct device *: __dev_fwnode)(dev)
bool device_property_present(struct device *dev, const char *propname);
int device_property_read_u8_array(struct device *dev, const char *propname,
@ -117,16 +123,16 @@ struct fwnode_handle *fwnode_get_next_available_child_node(
for (child = fwnode_get_next_available_child_node(fwnode, NULL); child;\
child = fwnode_get_next_available_child_node(fwnode, child))
struct fwnode_handle *device_get_next_child_node(
struct device *dev, struct fwnode_handle *child);
struct fwnode_handle *device_get_next_child_node(const struct device *dev,
struct fwnode_handle *child);
#define device_for_each_child_node(dev, child) \
for (child = device_get_next_child_node(dev, NULL); child; \
child = device_get_next_child_node(dev, child))
struct fwnode_handle *fwnode_get_named_child_node(
const struct fwnode_handle *fwnode, const char *childname);
struct fwnode_handle *device_get_named_child_node(struct device *dev,
struct fwnode_handle *fwnode_get_named_child_node(const struct fwnode_handle *fwnode,
const char *childname);
struct fwnode_handle *device_get_named_child_node(const struct device *dev,
const char *childname);
struct fwnode_handle *fwnode_handle_get(struct fwnode_handle *fwnode);
@ -135,7 +141,7 @@ void fwnode_handle_put(struct fwnode_handle *fwnode);
int fwnode_irq_get(const struct fwnode_handle *fwnode, unsigned int index);
int fwnode_irq_get_byname(const struct fwnode_handle *fwnode, const char *name);
unsigned int device_get_child_node_count(struct device *dev);
unsigned int device_get_child_node_count(const struct device *dev);
static inline bool device_property_read_bool(struct device *dev,
const char *propname)
@ -306,24 +312,14 @@ struct property_entry {
* crafted to avoid gcc-4.4.4's problems with initialization of anon unions
* and structs.
*/
#define __PROPERTY_ENTRY_ELEMENT_SIZE(_elem_) \
sizeof(((struct property_entry *)NULL)->value._elem_[0])
#define __PROPERTY_ENTRY_ARRAY_ELSIZE_LEN(_name_, _elsize_, _Type_, \
_val_, _len_) \
(struct property_entry) { \
.name = _name_, \
.length = (_len_) * (_elsize_), \
.type = DEV_PROP_##_Type_, \
{ .pointer = _val_ }, \
#define __PROPERTY_ENTRY_ARRAY_LEN(_name_, _elem_, _Type_, _val_, _len_) \
(struct property_entry) { \
.name = _name_, \
.length = (_len_) * sizeof_field(struct property_entry, value._elem_[0]), \
.type = DEV_PROP_##_Type_, \
{ .pointer = _val_ }, \
}
#define __PROPERTY_ENTRY_ARRAY_LEN(_name_, _elem_, _Type_, _val_, _len_)\
__PROPERTY_ENTRY_ARRAY_ELSIZE_LEN(_name_, \
__PROPERTY_ENTRY_ELEMENT_SIZE(_elem_), \
_Type_, _val_, _len_)
#define PROPERTY_ENTRY_U8_ARRAY_LEN(_name_, _val_, _len_) \
__PROPERTY_ENTRY_ARRAY_LEN(_name_, u8_data, U8, _val_, _len_)
#define PROPERTY_ENTRY_U16_ARRAY_LEN(_name_, _val_, _len_) \
@ -334,10 +330,14 @@ struct property_entry {
__PROPERTY_ENTRY_ARRAY_LEN(_name_, u64_data, U64, _val_, _len_)
#define PROPERTY_ENTRY_STRING_ARRAY_LEN(_name_, _val_, _len_) \
__PROPERTY_ENTRY_ARRAY_LEN(_name_, str, STRING, _val_, _len_)
#define PROPERTY_ENTRY_REF_ARRAY_LEN(_name_, _val_, _len_) \
__PROPERTY_ENTRY_ARRAY_ELSIZE_LEN(_name_, \
sizeof(struct software_node_ref_args), \
REF, _val_, _len_)
(struct property_entry) { \
.name = _name_, \
.length = (_len_) * sizeof(struct software_node_ref_args), \
.type = DEV_PROP_REF, \
{ .pointer = _val_ }, \
}
#define PROPERTY_ENTRY_U8_ARRAY(_name_, _val_) \
PROPERTY_ENTRY_U8_ARRAY_LEN(_name_, _val_, ARRAY_SIZE(_val_))
@ -349,13 +349,13 @@ struct property_entry {
PROPERTY_ENTRY_U64_ARRAY_LEN(_name_, _val_, ARRAY_SIZE(_val_))
#define PROPERTY_ENTRY_STRING_ARRAY(_name_, _val_) \
PROPERTY_ENTRY_STRING_ARRAY_LEN(_name_, _val_, ARRAY_SIZE(_val_))
#define PROPERTY_ENTRY_REF_ARRAY(_name_, _val_) \
#define PROPERTY_ENTRY_REF_ARRAY(_name_, _val_) \
PROPERTY_ENTRY_REF_ARRAY_LEN(_name_, _val_, ARRAY_SIZE(_val_))
#define __PROPERTY_ENTRY_ELEMENT(_name_, _elem_, _Type_, _val_) \
(struct property_entry) { \
.name = _name_, \
.length = __PROPERTY_ENTRY_ELEMENT_SIZE(_elem_), \
.length = sizeof_field(struct property_entry, value._elem_[0]), \
.is_inline = true, \
.type = DEV_PROP_##_Type_, \
{ .value = { ._elem_[0] = _val_ } }, \
@ -372,12 +372,6 @@ struct property_entry {
#define PROPERTY_ENTRY_STRING(_name_, _val_) \
__PROPERTY_ENTRY_ELEMENT(_name_, str, STRING, _val_)
#define PROPERTY_ENTRY_BOOL(_name_) \
(struct property_entry) { \
.name = _name_, \
.is_inline = true, \
}
#define PROPERTY_ENTRY_REF(_name_, _ref_, ...) \
(struct property_entry) { \
.name = _name_, \
@ -386,14 +380,18 @@ struct property_entry {
{ .pointer = &SOFTWARE_NODE_REFERENCE(_ref_, ##__VA_ARGS__), }, \
}
#define PROPERTY_ENTRY_BOOL(_name_) \
(struct property_entry) { \
.name = _name_, \
.is_inline = true, \
}
struct property_entry *
property_entries_dup(const struct property_entry *properties);
void property_entries_free(const struct property_entry *properties);
bool device_dma_supported(struct device *dev);
enum dev_dma_attr device_get_dma_attr(struct device *dev);
bool device_dma_supported(const struct device *dev);
enum dev_dma_attr device_get_dma_attr(const struct device *dev);
const void *device_get_match_data(const struct device *dev);
@ -413,7 +411,7 @@ struct fwnode_handle *fwnode_graph_get_remote_port(
struct fwnode_handle *fwnode_graph_get_remote_endpoint(
const struct fwnode_handle *fwnode);
static inline bool fwnode_graph_is_endpoint(struct fwnode_handle *fwnode)
static inline bool fwnode_graph_is_endpoint(const struct fwnode_handle *fwnode)
{
return fwnode_property_present(fwnode, "remote-endpoint");
}
@ -445,21 +443,21 @@ unsigned int fwnode_graph_get_endpoint_count(struct fwnode_handle *fwnode,
int fwnode_graph_parse_endpoint(const struct fwnode_handle *fwnode,
struct fwnode_endpoint *endpoint);
typedef void *(*devcon_match_fn_t)(struct fwnode_handle *fwnode, const char *id,
typedef void *(*devcon_match_fn_t)(const struct fwnode_handle *fwnode, const char *id,
void *data);
void *fwnode_connection_find_match(struct fwnode_handle *fwnode,
void *fwnode_connection_find_match(const struct fwnode_handle *fwnode,
const char *con_id, void *data,
devcon_match_fn_t match);
static inline void *device_connection_find_match(struct device *dev,
static inline void *device_connection_find_match(const struct device *dev,
const char *con_id, void *data,
devcon_match_fn_t match)
{
return fwnode_connection_find_match(dev_fwnode(dev), con_id, data, match);
}
int fwnode_connection_find_matches(struct fwnode_handle *fwnode,
int fwnode_connection_find_matches(const struct fwnode_handle *fwnode,
const char *con_id, void *data,
devcon_match_fn_t match,
void **matches, unsigned int matches_len);

19
include/linux/usb.h
View file

@ -258,7 +258,8 @@ struct usb_interface {
struct device *usb_dev;
struct work_struct reset_ws; /* for resets in atomic context */
};
#define to_usb_interface(d) container_of(d, struct usb_interface, dev)
#define to_usb_interface(__dev) container_of_const(__dev, struct usb_interface, dev)
static inline void *usb_get_intfdata(struct usb_interface *intf)
{
@ -721,12 +722,22 @@ struct usb_device {
u16 hub_delay;
unsigned use_generic_driver:1;
};
#define to_usb_device(d) container_of(d, struct usb_device, dev)
static inline struct usb_device *interface_to_usbdev(struct usb_interface *intf)
#define to_usb_device(__dev) container_of_const(__dev, struct usb_device, dev)
static inline struct usb_device *__intf_to_usbdev(struct usb_interface *intf)
{
return to_usb_device(intf->dev.parent);
}
static inline const struct usb_device *__intf_to_usbdev_const(const struct usb_interface *intf)
{
return to_usb_device((const struct device *)intf->dev.parent);
}
#define interface_to_usbdev(intf) \
_Generic((intf), \
const struct usb_interface *: __intf_to_usbdev_const, \
struct usb_interface *: __intf_to_usbdev)(intf)
extern struct usb_device *usb_get_dev(struct usb_device *dev);
extern void usb_put_dev(struct usb_device *dev);
@ -1284,7 +1295,7 @@ struct usb_device_driver {
*/
struct usb_class_driver {
char *name;
char *(*devnode)(struct device *dev, umode_t *mode);
char *(*devnode)(const struct device *dev, umode_t *mode);
const struct file_operations *fops;
int minor_base;
};

18
kernel/ksysfs.c
View file

@ -6,6 +6,7 @@
* Copyright (C) 2004 Kay Sievers <kay.sievers@vrfy.org>
*/
#include <asm/byteorder.h>
#include <linux/kobject.h>
#include <linux/string.h>
#include <linux/sysfs.h>
@ -20,6 +21,14 @@
#include <linux/rcupdate.h> /* rcu_expedited and rcu_normal */
#if defined(__LITTLE_ENDIAN)
#define CPU_BYTEORDER_STRING "little"
#elif defined(__BIG_ENDIAN)
#define CPU_BYTEORDER_STRING "big"
#else
#error Unknown byteorder
#endif
#define KERNEL_ATTR_RO(_name) \
static struct kobj_attribute _name##_attr = __ATTR_RO(_name)
@ -34,6 +43,14 @@ static ssize_t uevent_seqnum_show(struct kobject *kobj,
}
KERNEL_ATTR_RO(uevent_seqnum);
/* cpu byteorder */
static ssize_t cpu_byteorder_show(struct kobject *kobj,
struct kobj_attribute *attr, char *buf)
{
return sysfs_emit(buf, "%s\n", CPU_BYTEORDER_STRING);
}
KERNEL_ATTR_RO(cpu_byteorder);
#ifdef CONFIG_UEVENT_HELPER
/* uevent helper program, used during early boot */
static ssize_t uevent_helper_show(struct kobject *kobj,
@ -215,6 +232,7 @@ EXPORT_SYMBOL_GPL(kernel_kobj);
static struct attribute * kernel_attrs[] = {
&fscaps_attr.attr,
&uevent_seqnum_attr.attr,
&cpu_byteorder_attr.attr,
#ifdef CONFIG_UEVENT_HELPER
&uevent_helper_attr.attr,
#endif

2
kernel/params.c
View file

@ -926,7 +926,7 @@ static const struct sysfs_ops module_sysfs_ops = {
.store = module_attr_store,
};
static int uevent_filter(struct kobject *kobj)
static int uevent_filter(const struct kobject *kobj)
{
const struct kobj_type *ktype = get_ktype(kobj);

17
kernel/resource.c
View file

@ -888,7 +888,7 @@ void insert_resource_expand_to_fit(struct resource *root, struct resource *new)
if (conflict->end > new->end)
new->end = conflict->end;
printk("Expanded resource %s due to conflict with %s\n", new->name, conflict->name);
pr_info("Expanded resource %s due to conflict with %s\n", new->name, conflict->name);
}
write_unlock(&resource_lock);
}
@ -1283,9 +1283,7 @@ void __release_region(struct resource *parent, resource_size_t start,
write_unlock(&resource_lock);
printk(KERN_WARNING "Trying to free nonexistent resource "
"<%016llx-%016llx>\n", (unsigned long long)start,
(unsigned long long)end);
pr_warn("Trying to free nonexistent resource <%pa-%pa>\n", &start, &end);
}
EXPORT_SYMBOL(__release_region);
@ -1658,6 +1656,7 @@ __setup("reserve=", reserve_setup);
int iomem_map_sanity_check(resource_size_t addr, unsigned long size)
{
struct resource *p = &iomem_resource;
resource_size_t end = addr + size - 1;
int err = 0;
loff_t l;
@ -1667,12 +1666,12 @@ int iomem_map_sanity_check(resource_size_t addr, unsigned long size)
* We can probably skip the resources without
* IORESOURCE_IO attribute?
*/
if (p->start >= addr + size)
if (p->start > end)
continue;
if (p->end < addr)
continue;
if (PFN_DOWN(p->start) <= PFN_DOWN(addr) &&
PFN_DOWN(p->end) >= PFN_DOWN(addr + size - 1))
PFN_DOWN(p->end) >= PFN_DOWN(end))
continue;
/*
* if a resource is "BUSY", it's not a hardware resource
@ -1683,10 +1682,8 @@ int iomem_map_sanity_check(resource_size_t addr, unsigned long size)
if (p->flags & IORESOURCE_BUSY)
continue;
printk(KERN_WARNING "resource sanity check: requesting [mem %#010llx-%#010llx], which spans more than %s %pR\n",
(unsigned long long)addr,
(unsigned long long)(addr + size - 1),
p->name, p);
pr_warn("resource sanity check: requesting [mem %pa-%pa], which spans more than %s %pR\n",
&addr, &end, p->name, p);
err = -1;
break;
}

29
lib/kobject.c
View file

@ -25,7 +25,7 @@
* and thus @kobj should have a namespace tag associated with it. Returns
* %NULL otherwise.
*/
const void *kobject_namespace(struct kobject *kobj)
const void *kobject_namespace(const struct kobject *kobj)
{
const struct kobj_ns_type_operations *ns_ops = kobj_ns_ops(kobj);
@ -45,7 +45,7 @@ const void *kobject_namespace(struct kobject *kobj)
* representation of given kobject. Normally used to adjust ownership of
* objects in a container.
*/
void kobject_get_ownership(struct kobject *kobj, kuid_t *uid, kgid_t *gid)
void kobject_get_ownership(const struct kobject *kobj, kuid_t *uid, kgid_t *gid)
{
*uid = GLOBAL_ROOT_UID;
*gid = GLOBAL_ROOT_GID;
@ -94,10 +94,10 @@ static int create_dir(struct kobject *kobj)
return 0;
}
static int get_kobj_path_length(struct kobject *kobj)
static int get_kobj_path_length(const struct kobject *kobj)
{
int length = 1;
struct kobject *parent = kobj;
const struct kobject *parent = kobj;
/* walk up the ancestors until we hit the one pointing to the
* root.
@ -112,9 +112,9 @@ static int get_kobj_path_length(struct kobject *kobj)
return length;
}
static void fill_kobj_path(struct kobject *kobj, char *path, int length)
static void fill_kobj_path(const struct kobject *kobj, char *path, int length)
{
struct kobject *parent;
const struct kobject *parent;
--length;
for (parent = kobj; parent; parent = parent->parent) {
@ -136,7 +136,7 @@ static void fill_kobj_path(struct kobject *kobj, char *path, int length)
*
* Return: The newly allocated memory, caller must free with kfree().
*/
char *kobject_get_path(struct kobject *kobj, gfp_t gfp_mask)
char *kobject_get_path(const struct kobject *kobj, gfp_t gfp_mask)
{
char *path;
int len;
@ -834,6 +834,9 @@ EXPORT_SYMBOL_GPL(kobj_sysfs_ops);
/**
* kset_register() - Initialize and add a kset.
* @k: kset.
*
* NOTE: On error, the kset.kobj.name allocated by() kobj_set_name()
* is freed, it can not be used any more.
*/
int kset_register(struct kset *k)
{
@ -844,8 +847,12 @@ int kset_register(struct kset *k)
kset_init(k);
err = kobject_add_internal(&k->kobj);
if (err)
if (err) {
kfree_const(k->kobj.name);
/* Set it to NULL to avoid accessing bad pointer in callers. */
k->kobj.name = NULL;
return err;
}
kobject_uevent(&k->kobj, KOBJ_ADD);
return 0;
}
@ -900,7 +907,7 @@ static void kset_release(struct kobject *kobj)
kfree(kset);
}
static void kset_get_ownership(struct kobject *kobj, kuid_t *uid, kgid_t *gid)
static void kset_get_ownership(const struct kobject *kobj, kuid_t *uid, kgid_t *gid)
{
if (kobj->parent)
kobject_get_ownership(kobj->parent, uid, gid);
@ -1032,7 +1039,7 @@ int kobj_ns_type_registered(enum kobj_ns_type type)
return registered;
}
const struct kobj_ns_type_operations *kobj_child_ns_ops(struct kobject *parent)
const struct kobj_ns_type_operations *kobj_child_ns_ops(const struct kobject *parent)
{
const struct kobj_ns_type_operations *ops = NULL;
@ -1042,7 +1049,7 @@ const struct kobj_ns_type_operations *kobj_child_ns_ops(struct kobject *parent)
return ops;
}
const struct kobj_ns_type_operations *kobj_ns_ops(struct kobject *kobj)
const struct kobj_ns_type_operations *kobj_ns_ops(const struct kobject *kobj)
{
return kobj_child_ns_ops(kobj->parent);
}

4
net/atm/atm_sysfs.c
View file

@ -108,9 +108,9 @@ static struct device_attribute *atm_attrs[] = {
};
static int atm_uevent(struct device *cdev, struct kobj_uevent_env *env)
static int atm_uevent(const struct device *cdev, struct kobj_uevent_env *env)
{
struct atm_dev *adev;
const struct atm_dev *adev;
if (!cdev)
return -ENODEV;

2
net/bridge/br_if.c
View file

@ -262,7 +262,7 @@ static void release_nbp(struct kobject *kobj)
kfree(p);
}
static void brport_get_ownership(struct kobject *kobj, kuid_t *uid, kgid_t *gid)
static void brport_get_ownership(const struct kobject *kobj, kuid_t *uid, kgid_t *gid)
{
struct net_bridge_port *p = kobj_to_brport(kobj);

20
net/core/net-sysfs.c
View file

@ -1020,7 +1020,7 @@ static void rx_queue_release(struct kobject *kobj)
netdev_put(queue->dev, &queue->dev_tracker);
}
static const void *rx_queue_namespace(struct kobject *kobj)
static const void *rx_queue_namespace(const struct kobject *kobj)
{
struct netdev_rx_queue *queue = to_rx_queue(kobj);
struct device *dev = &queue->dev->dev;
@ -1032,7 +1032,7 @@ static const void *rx_queue_namespace(struct kobject *kobj)
return ns;
}
static void rx_queue_get_ownership(struct kobject *kobj,
static void rx_queue_get_ownership(const struct kobject *kobj,
kuid_t *uid, kgid_t *gid)
{
const struct net *net = rx_queue_namespace(kobj);
@ -1623,7 +1623,7 @@ static void netdev_queue_release(struct kobject *kobj)
netdev_put(queue->dev, &queue->dev_tracker);
}
static const void *netdev_queue_namespace(struct kobject *kobj)
static const void *netdev_queue_namespace(const struct kobject *kobj)
{
struct netdev_queue *queue = to_netdev_queue(kobj);
struct device *dev = &queue->dev->dev;
@ -1635,7 +1635,7 @@ static const void *netdev_queue_namespace(struct kobject *kobj)
return ns;
}
static void netdev_queue_get_ownership(struct kobject *kobj,
static void netdev_queue_get_ownership(const struct kobject *kobj,
kuid_t *uid, kgid_t *gid)
{
const struct net *net = netdev_queue_namespace(kobj);
@ -1873,9 +1873,9 @@ const struct kobj_ns_type_operations net_ns_type_operations = {
};
EXPORT_SYMBOL_GPL(net_ns_type_operations);
static int netdev_uevent(struct device *d, struct kobj_uevent_env *env)
static int netdev_uevent(const struct device *d, struct kobj_uevent_env *env)
{
struct net_device *dev = to_net_dev(d);
const struct net_device *dev = to_net_dev(d);
int retval;
/* pass interface to uevent. */
@ -1910,16 +1910,16 @@ static void netdev_release(struct device *d)
netdev_freemem(dev);
}
static const void *net_namespace(struct device *d)
static const void *net_namespace(const struct device *d)
{
struct net_device *dev = to_net_dev(d);
const struct net_device *dev = to_net_dev(d);
return dev_net(dev);
}
static void net_get_ownership(struct device *d, kuid_t *uid, kgid_t *gid)
static void net_get_ownership(const struct device *d, kuid_t *uid, kgid_t *gid)
{
struct net_device *dev = to_net_dev(d);
const struct net_device *dev = to_net_dev(d);
const struct net *net = dev_net(dev);
net_ns_get_ownership(net, uid, gid);

2
net/rfkill/core.c
View file

@ -832,7 +832,7 @@ static void rfkill_release(struct device *dev)
kfree(rfkill);
}
static int rfkill_dev_uevent(struct device *dev, struct kobj_uevent_env *env)
static int rfkill_dev_uevent(const struct device *dev, struct kobj_uevent_env *env)
{
struct rfkill *rfkill = to_rfkill(dev);
unsigned long flags;

8
net/sunrpc/sysfs.c
View file

@ -31,7 +31,7 @@ static void rpc_sysfs_object_release(struct kobject *kobj)
}
static const struct kobj_ns_type_operations *
rpc_sysfs_object_child_ns_type(struct kobject *kobj)
rpc_sysfs_object_child_ns_type(const struct kobject *kobj)
{
return &net_ns_type_operations;
}
@ -381,17 +381,17 @@ static void rpc_sysfs_xprt_release(struct kobject *kobj)
kfree(xprt);
}
static const void *rpc_sysfs_client_namespace(struct kobject *kobj)
static const void *rpc_sysfs_client_namespace(const struct kobject *kobj)
{
return container_of(kobj, struct rpc_sysfs_client, kobject)->net;
}
static const void *rpc_sysfs_xprt_switch_namespace(struct kobject *kobj)
static const void *rpc_sysfs_xprt_switch_namespace(const struct kobject *kobj)
{
return container_of(kobj, struct rpc_sysfs_xprt_switch, kobject)->net;
}
static const void *rpc_sysfs_xprt_namespace(struct kobject *kobj)
static const void *rpc_sysfs_xprt_namespace(const struct kobject *kobj)
{
return container_of(kobj, struct rpc_sysfs_xprt,
kobject)->xprt->xprt_net;

2
net/wireless/sysfs.c
View file

@ -148,7 +148,7 @@ static SIMPLE_DEV_PM_OPS(wiphy_pm_ops, wiphy_suspend, wiphy_resume);
#define WIPHY_PM_OPS NULL
#endif
static const void *wiphy_namespace(struct device *d)
static const void *wiphy_namespace(const struct device *d)
{
struct wiphy *wiphy = container_of(d, struct wiphy, dev);

2
sound/sound_core.c
View file

@ -30,7 +30,7 @@ MODULE_DESCRIPTION("Core sound module");
MODULE_AUTHOR("Alan Cox");
MODULE_LICENSE("GPL");
static char *sound_devnode(struct device *dev, umode_t *mode)
static char *sound_devnode(const struct device *dev, umode_t *mode)
{
if (MAJOR(dev->devt) == SOUND_MAJOR)
return NULL;