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Merge branch 'linus' into perf/core

Browse source 
Conflicts:
	kernel/hw_breakpoint.c

Merge reason: resolve the conflict.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Ingo Molnar 2010-09-22 18:45:01 +02:00
parent 41945f6ccf 8b15575cae
commit 90edf27fb8
26 changed files with 204 additions and 145 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

4
arch/Kconfig
View file

@ -32,8 +32,9 @@ config HAVE_OPROFILE
config KPROBES
bool "Kprobes"
depends on KALLSYMS && MODULES
depends on MODULES
depends on HAVE_KPROBES
select KALLSYMS
help
Kprobes allows you to trap at almost any kernel address and
execute a callback function. register_kprobe() establishes
@ -45,7 +46,6 @@ config OPTPROBES
def_bool y
depends on KPROBES && HAVE_OPTPROBES
depends on !PREEMPT
select KALLSYMS_ALL
config HAVE_EFFICIENT_UNALIGNED_ACCESS
bool

2
arch/x86/include/asm/hw_breakpoint.h
View file

@ -20,7 +20,7 @@ struct arch_hw_breakpoint {
#include <linux/list.h>
/* Available HW breakpoint length encodings */
#define X86_BREAKPOINT_LEN_X 0x00
#define X86_BREAKPOINT_LEN_X 0x40
#define X86_BREAKPOINT_LEN_1 0x40
#define X86_BREAKPOINT_LEN_2 0x44
#define X86_BREAKPOINT_LEN_4 0x4c

40
arch/x86/kernel/hw_breakpoint.c
View file

@ -206,11 +206,27 @@ int arch_check_bp_in_kernelspace(struct perf_event *bp)
int arch_bp_generic_fields(int x86_len, int x86_type,
int *gen_len, int *gen_type)
{
/* Type */
switch (x86_type) {
case X86_BREAKPOINT_EXECUTE:
if (x86_len != X86_BREAKPOINT_LEN_X)
return -EINVAL;
*gen_type = HW_BREAKPOINT_X;
*gen_len = sizeof(long);
return 0;
case X86_BREAKPOINT_WRITE:
*gen_type = HW_BREAKPOINT_W;
break;
case X86_BREAKPOINT_RW:
*gen_type = HW_BREAKPOINT_W | HW_BREAKPOINT_R;
break;
default:
return -EINVAL;
}
/* Len */
switch (x86_len) {
case X86_BREAKPOINT_LEN_X:
*gen_len = sizeof(long);
break;
case X86_BREAKPOINT_LEN_1:
*gen_len = HW_BREAKPOINT_LEN_1;
break;
@ -229,21 +245,6 @@ int arch_bp_generic_fields(int x86_len, int x86_type,
return -EINVAL;
}
/* Type */
switch (x86_type) {
case X86_BREAKPOINT_EXECUTE:
*gen_type = HW_BREAKPOINT_X;
break;
case X86_BREAKPOINT_WRITE:
*gen_type = HW_BREAKPOINT_W;
break;
case X86_BREAKPOINT_RW:
*gen_type = HW_BREAKPOINT_W | HW_BREAKPOINT_R;
break;
default:
return -EINVAL;
}
return 0;
}
@ -316,9 +317,6 @@ int arch_validate_hwbkpt_settings(struct perf_event *bp)
ret = -EINVAL;
switch (info->len) {
case X86_BREAKPOINT_LEN_X:
align = sizeof(long) -1;
break;
case X86_BREAKPOINT_LEN_1:
align = 0;
break;

13
arch/x86/lguest/boot.c
View file

@ -324,9 +324,8 @@ static void lguest_load_gdt(const struct desc_ptr *desc)
}
/*
* For a single GDT entry which changes, we do the lazy thing: alter our GDT,
* then tell the Host to reload the entire thing. This operation is so rare
* that this naive implementation is reasonable.
* For a single GDT entry which changes, we simply change our copy and
* then tell the host about it.
*/
static void lguest_write_gdt_entry(struct desc_struct *dt, int entrynum,
const void *desc, int type)
@ -338,9 +337,13 @@ static void lguest_write_gdt_entry(struct desc_struct *dt, int entrynum,
}
/*
* OK, I lied. There are three "thread local storage" GDT entries which change
* There are three "thread local storage" GDT entries which change
* on every context switch (these three entries are how glibc implements
* __thread variables). So we have a hypercall specifically for this case.
* __thread variables). As an optimization, we have a hypercall
* specifically for this case.
*
* Wouldn't it be nicer to have a general LOAD_GDT_ENTRIES hypercall
* which took a range of entries?
*/
static void lguest_load_tls(struct thread_struct *t, unsigned int cpu)
{

4
arch/x86/oprofile/nmi_int.c
View file

@ -671,7 +671,9 @@ static int __init ppro_init(char **cpu_type)
case 14:
*cpu_type = "i386/core";
break;
case 15: case 23:
case 0x0f:
case 0x16:
case 0x17:
*cpu_type = "i386/core_2";
break;
case 0x1a:

2
drivers/char/agp/intel-agp.c
View file

@ -806,6 +806,8 @@ static const struct intel_driver_description {
"G45/G43", NULL, &intel_i965_driver },
{ PCI_DEVICE_ID_INTEL_B43_HB, PCI_DEVICE_ID_INTEL_B43_IG,
"B43", NULL, &intel_i965_driver },
{ PCI_DEVICE_ID_INTEL_B43_1_HB, PCI_DEVICE_ID_INTEL_B43_1_IG,
"B43", NULL, &intel_i965_driver },
{ PCI_DEVICE_ID_INTEL_G41_HB, PCI_DEVICE_ID_INTEL_G41_IG,
"G41", NULL, &intel_i965_driver },
{ PCI_DEVICE_ID_INTEL_IRONLAKE_D_HB, PCI_DEVICE_ID_INTEL_IRONLAKE_D_IG,

2
drivers/char/agp/intel-agp.h
View file

@ -186,6 +186,8 @@
#define PCI_DEVICE_ID_INTEL_Q33_IG 0x29D2
#define PCI_DEVICE_ID_INTEL_B43_HB 0x2E40
#define PCI_DEVICE_ID_INTEL_B43_IG 0x2E42
#define PCI_DEVICE_ID_INTEL_B43_1_HB 0x2E90
#define PCI_DEVICE_ID_INTEL_B43_1_IG 0x2E92
#define PCI_DEVICE_ID_INTEL_GM45_HB 0x2A40
#define PCI_DEVICE_ID_INTEL_GM45_IG 0x2A42
#define PCI_DEVICE_ID_INTEL_EAGLELAKE_HB 0x2E00

6
drivers/char/virtio_console.c
View file

@ -596,6 +596,10 @@ static ssize_t port_fops_write(struct file *filp, const char __user *ubuf,
ssize_t ret;
bool nonblock;
/* Userspace could be out to fool us */
if (!count)
return 0;
port = filp->private_data;
nonblock = filp->f_flags & O_NONBLOCK;
@ -642,7 +646,7 @@ static unsigned int port_fops_poll(struct file *filp, poll_table *wait)
poll_wait(filp, &port->waitqueue, wait);
ret = 0;
if (port->inbuf)
if (!will_read_block(port))
ret |= POLLIN | POLLRDNORM;
if (!will_write_block(port))
ret |= POLLOUT;

1
drivers/gpu/drm/i915/i915_drv.c
View file

@ -170,6 +170,7 @@ static const struct pci_device_id pciidlist[] = { /* aka */
INTEL_VGA_DEVICE(0x2e22, &intel_g45_info), /* G45_G */
INTEL_VGA_DEVICE(0x2e32, &intel_g45_info), /* G41_G */
INTEL_VGA_DEVICE(0x2e42, &intel_g45_info), /* B43_G */
INTEL_VGA_DEVICE(0x2e92, &intel_g45_info), /* B43_G.1 */
INTEL_VGA_DEVICE(0xa001, &intel_pineview_info),
INTEL_VGA_DEVICE(0xa011, &intel_pineview_info),
INTEL_VGA_DEVICE(0x0042, &intel_ironlake_d_info),

37
drivers/gpu/drm/i915/i915_gem.c
View file

@ -2351,14 +2351,21 @@ i915_gem_object_get_fence_reg(struct drm_gem_object *obj)
reg->obj = obj;
if (IS_GEN6(dev))
switch (INTEL_INFO(dev)->gen) {
case 6:
sandybridge_write_fence_reg(reg);
else if (IS_I965G(dev))
break;
case 5:
case 4:
i965_write_fence_reg(reg);
else if (IS_I9XX(dev))
break;
case 3:
i915_write_fence_reg(reg);
else
break;
case 2:
i830_write_fence_reg(reg);
break;
}
trace_i915_gem_object_get_fence(obj, obj_priv->fence_reg,
obj_priv->tiling_mode);
@ -2381,22 +2388,26 @@ i915_gem_clear_fence_reg(struct drm_gem_object *obj)
struct drm_i915_gem_object *obj_priv = to_intel_bo(obj);
struct drm_i915_fence_reg *reg =
&dev_priv->fence_regs[obj_priv->fence_reg];
uint32_t fence_reg;
if (IS_GEN6(dev)) {
switch (INTEL_INFO(dev)->gen) {
case 6:
I915_WRITE64(FENCE_REG_SANDYBRIDGE_0 +
(obj_priv->fence_reg * 8), 0);
} else if (IS_I965G(dev)) {
break;
case 5:
case 4:
I915_WRITE64(FENCE_REG_965_0 + (obj_priv->fence_reg * 8), 0);
} else {
uint32_t fence_reg;
if (obj_priv->fence_reg < 8)
fence_reg = FENCE_REG_830_0 + obj_priv->fence_reg * 4;
break;
case 3:
if (obj_priv->fence_reg > 8)
fence_reg = FENCE_REG_945_8 + (obj_priv->fence_reg - 8) * 4;
else
fence_reg = FENCE_REG_945_8 + (obj_priv->fence_reg -
8) * 4;
case 2:
fence_reg = FENCE_REG_830_0 + obj_priv->fence_reg * 4;
I915_WRITE(fence_reg, 0);
break;
}
reg->obj = NULL;

9
drivers/gpu/drm/i915/i915_gem_evict.c
View file

@ -79,6 +79,7 @@ mark_free(struct drm_i915_gem_object *obj_priv,
struct list_head *unwind)
{
list_add(&obj_priv->evict_list, unwind);
drm_gem_object_reference(&obj_priv->base);
return drm_mm_scan_add_block(obj_priv->gtt_space);
}
@ -165,6 +166,7 @@ i915_gem_evict_something(struct drm_device *dev, int min_size, unsigned alignmen
list_for_each_entry(obj_priv, &unwind_list, evict_list) {
ret = drm_mm_scan_remove_block(obj_priv->gtt_space);
BUG_ON(ret);
drm_gem_object_unreference(&obj_priv->base);
}
/* We expect the caller to unpin, evict all and try again, or give up.
@ -181,18 +183,21 @@ i915_gem_evict_something(struct drm_device *dev, int min_size, unsigned alignmen
* scanning, therefore store to be evicted objects on a
* temporary list. */
list_move(&obj_priv->evict_list, &eviction_list);
}
} else
drm_gem_object_unreference(&obj_priv->base);
}
/* Unbinding will emit any required flushes */
list_for_each_entry_safe(obj_priv, tmp_obj_priv,
&eviction_list, evict_list) {
#if WATCH_LRU
DRM_INFO("%s: evicting %p\n", __func__, obj);
DRM_INFO("%s: evicting %p\n", __func__, &obj_priv->base);
#endif
ret = i915_gem_object_unbind(&obj_priv->base);
if (ret)
return ret;
drm_gem_object_unreference(&obj_priv->base);
}
/* The just created free hole should be on the top of the free stack

36
drivers/gpu/drm/i915/i915_suspend.c
View file

@ -789,16 +789,25 @@ int i915_save_state(struct drm_device *dev)
dev_priv->saveSWF2[i] = I915_READ(SWF30 + (i << 2));
/* Fences */
if (IS_I965G(dev)) {
switch (INTEL_INFO(dev)->gen) {
case 6:
for (i = 0; i < 16; i++)
dev_priv->saveFENCE[i] = I915_READ64(FENCE_REG_SANDYBRIDGE_0 + (i * 8));
break;
case 5:
case 4:
for (i = 0; i < 16; i++)
dev_priv->saveFENCE[i] = I915_READ64(FENCE_REG_965_0 + (i * 8));
} else {
for (i = 0; i < 8; i++)
dev_priv->saveFENCE[i] = I915_READ(FENCE_REG_830_0 + (i * 4));
break;
case 3:
if (IS_I945G(dev) || IS_I945GM(dev) || IS_G33(dev))
for (i = 0; i < 8; i++)
dev_priv->saveFENCE[i+8] = I915_READ(FENCE_REG_945_8 + (i * 4));
case 2:
for (i = 0; i < 8; i++)
dev_priv->saveFENCE[i] = I915_READ(FENCE_REG_830_0 + (i * 4));
break;
}
return 0;
@ -815,15 +824,24 @@ int i915_restore_state(struct drm_device *dev)
I915_WRITE(HWS_PGA, dev_priv->saveHWS);
/* Fences */
if (IS_I965G(dev)) {
switch (INTEL_INFO(dev)->gen) {
case 6:
for (i = 0; i < 16; i++)
I915_WRITE64(FENCE_REG_SANDYBRIDGE_0 + (i * 8), dev_priv->saveFENCE[i]);
break;
case 5:
case 4:
for (i = 0; i < 16; i++)
I915_WRITE64(FENCE_REG_965_0 + (i * 8), dev_priv->saveFENCE[i]);
} else {
for (i = 0; i < 8; i++)
I915_WRITE(FENCE_REG_830_0 + (i * 4), dev_priv->saveFENCE[i]);
break;
case 3:
case 2:
if (IS_I945G(dev) || IS_I945GM(dev) || IS_G33(dev))
for (i = 0; i < 8; i++)
I915_WRITE(FENCE_REG_945_8 + (i * 4), dev_priv->saveFENCE[i+8]);
for (i = 0; i < 8; i++)
I915_WRITE(FENCE_REG_830_0 + (i * 4), dev_priv->saveFENCE[i]);
break;
}
i915_restore_display(dev);

4
drivers/gpu/drm/i915/intel_crt.c
View file

@ -188,7 +188,7 @@ static bool intel_ironlake_crt_detect_hotplug(struct drm_connector *connector)
if (wait_for((I915_READ(PCH_ADPA) & ADPA_CRT_HOTPLUG_FORCE_TRIGGER) == 0,
1000, 1))
DRM_ERROR("timed out waiting for FORCE_TRIGGER");
DRM_DEBUG_KMS("timed out waiting for FORCE_TRIGGER");
if (turn_off_dac) {
I915_WRITE(PCH_ADPA, temp);
@ -245,7 +245,7 @@ static bool intel_crt_detect_hotplug(struct drm_connector *connector)
if (wait_for((I915_READ(PORT_HOTPLUG_EN) &
CRT_HOTPLUG_FORCE_DETECT) == 0,
1000, 1))
DRM_ERROR("timed out waiting for FORCE_DETECT to go off");
DRM_DEBUG_KMS("timed out waiting for FORCE_DETECT to go off");
}
stat = I915_READ(PORT_HOTPLUG_STAT);

8
drivers/gpu/drm/i915/intel_display.c
View file

@ -2463,11 +2463,19 @@ static bool intel_crtc_mode_fixup(struct drm_crtc *crtc,
struct drm_display_mode *adjusted_mode)
{
struct drm_device *dev = crtc->dev;
if (HAS_PCH_SPLIT(dev)) {
/* FDI link clock is fixed at 2.7G */
if (mode->clock * 3 > IRONLAKE_FDI_FREQ * 4)
return false;
}
/* XXX some encoders set the crtcinfo, others don't.
* Obviously we need some form of conflict resolution here...
*/
if (adjusted_mode->crtc_htotal == 0)
drm_mode_set_crtcinfo(adjusted_mode, 0);
return true;
}

1
fs/ceph/Kconfig
View file

@ -3,6 +3,7 @@ config CEPH_FS
depends on INET && EXPERIMENTAL
select LIBCRC32C
select CRYPTO_AES
select CRYPTO
help
Choose Y or M here to include support for mounting the
experimental Ceph distributed file system. Ceph is an extremely

7
fs/ceph/addr.c
View file

@ -411,8 +411,8 @@ static int writepage_nounlock(struct page *page, struct writeback_control *wbc)
if (i_size < page_off + len)
len = i_size - page_off;
dout("writepage %p page %p index %lu on %llu~%u\n",
inode, page, page->index, page_off, len);
dout("writepage %p page %p index %lu on %llu~%u snapc %p\n",
inode, page, page->index, page_off, len, snapc);
writeback_stat = atomic_long_inc_return(&client->writeback_count);
if (writeback_stat >
@ -766,7 +766,8 @@ static int ceph_writepages_start(struct address_space *mapping,
/* ok */
if (locked_pages == 0) {
/* prepare async write request */
offset = page->index << PAGE_CACHE_SHIFT;
offset = (unsigned long long)page->index
<< PAGE_CACHE_SHIFT;
len = wsize;
req = ceph_osdc_new_request(&client->osdc,
&ci->i_layout,

27
fs/ceph/caps.c
View file

@ -814,7 +814,7 @@ int __ceph_caps_used(struct ceph_inode_info *ci)
used |= CEPH_CAP_PIN;
if (ci->i_rd_ref)
used |= CEPH_CAP_FILE_RD;
if (ci->i_rdcache_ref || ci->i_rdcache_gen)
if (ci->i_rdcache_ref || ci->vfs_inode.i_data.nrpages)
used |= CEPH_CAP_FILE_CACHE;
if (ci->i_wr_ref)
used |= CEPH_CAP_FILE_WR;
@ -1195,10 +1195,14 @@ static int __send_cap(struct ceph_mds_client *mdsc, struct ceph_cap *cap,
* asynchronously back to the MDS once sync writes complete and dirty
* data is written out.
*
* Unless @again is true, skip cap_snaps that were already sent to
* the MDS (i.e., during this session).
*
* Called under i_lock. Takes s_mutex as needed.
*/
void __ceph_flush_snaps(struct ceph_inode_info *ci,
struct ceph_mds_session **psession)
struct ceph_mds_session **psession,
int again)
__releases(ci->vfs_inode->i_lock)
__acquires(ci->vfs_inode->i_lock)
{
@ -1227,7 +1231,7 @@ void __ceph_flush_snaps(struct ceph_inode_info *ci,
* pages to be written out.
*/
if (capsnap->dirty_pages || capsnap->writing)
continue;
break;
/*
* if cap writeback already occurred, we should have dropped
@ -1240,6 +1244,13 @@ void __ceph_flush_snaps(struct ceph_inode_info *ci,
dout("no auth cap (migrating?), doing nothing\n");
goto out;
}
/* only flush each capsnap once */
if (!again && !list_empty(&capsnap->flushing_item)) {
dout("already flushed %p, skipping\n", capsnap);
continue;
}
mds = ci->i_auth_cap->session->s_mds;
mseq = ci->i_auth_cap->mseq;
@ -1276,8 +1287,8 @@ void __ceph_flush_snaps(struct ceph_inode_info *ci,
&session->s_cap_snaps_flushing);
spin_unlock(&inode->i_lock);
dout("flush_snaps %p cap_snap %p follows %lld size %llu\n",
inode, capsnap, next_follows, capsnap->size);
dout("flush_snaps %p cap_snap %p follows %lld tid %llu\n",
inode, capsnap, capsnap->follows, capsnap->flush_tid);
send_cap_msg(session, ceph_vino(inode).ino, 0,
CEPH_CAP_OP_FLUSHSNAP, capsnap->issued, 0,
capsnap->dirty, 0, capsnap->flush_tid, 0, mseq,
@ -1314,7 +1325,7 @@ static void ceph_flush_snaps(struct ceph_inode_info *ci)
struct inode *inode = &ci->vfs_inode;
spin_lock(&inode->i_lock);
__ceph_flush_snaps(ci, NULL);
__ceph_flush_snaps(ci, NULL, 0);
spin_unlock(&inode->i_lock);
}
@ -1477,7 +1488,7 @@ void ceph_check_caps(struct ceph_inode_info *ci, int flags,
/* flush snaps first time around only */
if (!list_empty(&ci->i_cap_snaps))
__ceph_flush_snaps(ci, &session);
__ceph_flush_snaps(ci, &session, 0);
goto retry_locked;
retry:
spin_lock(&inode->i_lock);
@ -1894,7 +1905,7 @@ static void kick_flushing_capsnaps(struct ceph_mds_client *mdsc,
if (cap && cap->session == session) {
dout("kick_flushing_caps %p cap %p capsnap %p\n", inode,
cap, capsnap);
__ceph_flush_snaps(ci, &session);
__ceph_flush_snaps(ci, &session, 1);
} else {
pr_err("%p auth cap %p not mds%d ???\n", inode,
cap, session->s_mds);

10
fs/ceph/dir.c
View file

@ -1021,11 +1021,15 @@ static int ceph_d_revalidate(struct dentry *dentry, struct nameidata *nd)
static void ceph_dentry_release(struct dentry *dentry)
{
struct ceph_dentry_info *di = ceph_dentry(dentry);
struct inode *parent_inode = dentry->d_parent->d_inode;
u64 snapid = ceph_snap(parent_inode);
struct inode *parent_inode = NULL;
u64 snapid = CEPH_NOSNAP;
if (!IS_ROOT(dentry)) {
parent_inode = dentry->d_parent->d_inode;
if (parent_inode)
snapid = ceph_snap(parent_inode);
}
dout("dentry_release %p parent %p\n", dentry, parent_inode);
if (parent_inode && snapid != CEPH_SNAPDIR) {
struct ceph_inode_info *ci = ceph_inode(parent_inode);

11
fs/ceph/inode.c
View file

@ -845,7 +845,7 @@ static void ceph_set_dentry_offset(struct dentry *dn)
* the caller) if we fail.
*/
static struct dentry *splice_dentry(struct dentry *dn, struct inode *in,
bool *prehash)
bool *prehash, bool set_offset)
{
struct dentry *realdn;
@ -877,7 +877,8 @@ static struct dentry *splice_dentry(struct dentry *dn, struct inode *in,
}
if ((!prehash || *prehash) && d_unhashed(dn))
d_rehash(dn);
ceph_set_dentry_offset(dn);
if (set_offset)
ceph_set_dentry_offset(dn);
out:
return dn;
}
@ -1062,7 +1063,7 @@ int ceph_fill_trace(struct super_block *sb, struct ceph_mds_request *req,
d_delete(dn);
goto done;
}
dn = splice_dentry(dn, in, &have_lease);
dn = splice_dentry(dn, in, &have_lease, true);
if (IS_ERR(dn)) {
err = PTR_ERR(dn);
goto done;
@ -1105,7 +1106,7 @@ int ceph_fill_trace(struct super_block *sb, struct ceph_mds_request *req,
goto done;
}
dout(" linking snapped dir %p to dn %p\n", in, dn);
dn = splice_dentry(dn, in, NULL);
dn = splice_dentry(dn, in, NULL, true);
if (IS_ERR(dn)) {
err = PTR_ERR(dn);
goto done;
@ -1237,7 +1238,7 @@ int ceph_readdir_prepopulate(struct ceph_mds_request *req,
err = PTR_ERR(in);
goto out;
}
dn = splice_dentry(dn, in, NULL);
dn = splice_dentry(dn, in, NULL, false);
if (IS_ERR(dn))
dn = NULL;
}

2
fs/ceph/mds_client.c
View file

@ -2374,6 +2374,8 @@ static int encode_caps_cb(struct inode *inode, struct ceph_cap *cap,
num_fcntl_locks,
num_flock_locks);
unlock_kernel();
} else {
err = ceph_pagelist_append(pagelist, &rec, reclen);
}
out_free:

12
fs/ceph/pagelist.c
View file

@ -5,10 +5,18 @@
#include "pagelist.h"
static void ceph_pagelist_unmap_tail(struct ceph_pagelist *pl)
{
struct page *page = list_entry(pl->head.prev, struct page,
lru);
kunmap(page);
}
int ceph_pagelist_release(struct ceph_pagelist *pl)
{
if (pl->mapped_tail)
kunmap(pl->mapped_tail);
ceph_pagelist_unmap_tail(pl);
while (!list_empty(&pl->head)) {
struct page *page = list_first_entry(&pl->head, struct page,
lru);
@ -26,7 +34,7 @@ static int ceph_pagelist_addpage(struct ceph_pagelist *pl)
pl->room += PAGE_SIZE;
list_add_tail(&page->lru, &pl->head);
if (pl->mapped_tail)
kunmap(pl->mapped_tail);
ceph_pagelist_unmap_tail(pl);
pl->mapped_tail = kmap(page);
return 0;
}

92
fs/ceph/snap.c
View file

@ -119,6 +119,7 @@ static struct ceph_snap_realm *ceph_create_snap_realm(
INIT_LIST_HEAD(&realm->children);
INIT_LIST_HEAD(&realm->child_item);
INIT_LIST_HEAD(&realm->empty_item);
INIT_LIST_HEAD(&realm->dirty_item);
INIT_LIST_HEAD(&realm->inodes_with_caps);
spin_lock_init(&realm->inodes_with_caps_lock);
__insert_snap_realm(&mdsc->snap_realms, realm);
@ -467,7 +468,7 @@ void ceph_queue_cap_snap(struct ceph_inode_info *ci)
INIT_LIST_HEAD(&capsnap->ci_item);
INIT_LIST_HEAD(&capsnap->flushing_item);
capsnap->follows = snapc->seq - 1;
capsnap->follows = snapc->seq;
capsnap->issued = __ceph_caps_issued(ci, NULL);
capsnap->dirty = dirty;
@ -604,6 +605,7 @@ int ceph_update_snap_trace(struct ceph_mds_client *mdsc,
struct ceph_snap_realm *realm;
int invalidate = 0;
int err = -ENOMEM;
LIST_HEAD(dirty_realms);
dout("update_snap_trace deletion=%d\n", deletion);
more:
@ -626,24 +628,6 @@ int ceph_update_snap_trace(struct ceph_mds_client *mdsc,
}
}
if (le64_to_cpu(ri->seq) > realm->seq) {
dout("update_snap_trace updating %llx %p %lld -> %lld\n",
realm->ino, realm, realm->seq, le64_to_cpu(ri->seq));
/*
* if the realm seq has changed, queue a cap_snap for every
* inode with open caps. we do this _before_ we update
* the realm info so that we prepare for writeback under the
* _previous_ snap context.
*
* ...unless it's a snap deletion!
*/
if (!deletion)
queue_realm_cap_snaps(realm);
} else {
dout("update_snap_trace %llx %p seq %lld unchanged\n",
realm->ino, realm, realm->seq);
}
/* ensure the parent is correct */
err = adjust_snap_realm_parent(mdsc, realm, le64_to_cpu(ri->parent));
if (err < 0)
@ -651,6 +635,8 @@ int ceph_update_snap_trace(struct ceph_mds_client *mdsc,
invalidate += err;
if (le64_to_cpu(ri->seq) > realm->seq) {
dout("update_snap_trace updating %llx %p %lld -> %lld\n",
realm->ino, realm, realm->seq, le64_to_cpu(ri->seq));
/* update realm parameters, snap lists */
realm->seq = le64_to_cpu(ri->seq);
realm->created = le64_to_cpu(ri->created);
@ -668,9 +654,17 @@ int ceph_update_snap_trace(struct ceph_mds_client *mdsc,
if (err < 0)
goto fail;
/* queue realm for cap_snap creation */
list_add(&realm->dirty_item, &dirty_realms);
invalidate = 1;
} else if (!realm->cached_context) {
dout("update_snap_trace %llx %p seq %lld new\n",
realm->ino, realm, realm->seq);
invalidate = 1;
} else {
dout("update_snap_trace %llx %p seq %lld unchanged\n",
realm->ino, realm, realm->seq);
}
dout("done with %llx %p, invalidated=%d, %p %p\n", realm->ino,
@ -683,6 +677,14 @@ int ceph_update_snap_trace(struct ceph_mds_client *mdsc,
if (invalidate)
rebuild_snap_realms(realm);
/*
* queue cap snaps _after_ we've built the new snap contexts,
* so that i_head_snapc can be set appropriately.
*/
list_for_each_entry(realm, &dirty_realms, dirty_item) {
queue_realm_cap_snaps(realm);
}
__cleanup_empty_realms(mdsc);
return 0;
@ -715,7 +717,7 @@ static void flush_snaps(struct ceph_mds_client *mdsc)
igrab(inode);
spin_unlock(&mdsc->snap_flush_lock);
spin_lock(&inode->i_lock);
__ceph_flush_snaps(ci, &session);
__ceph_flush_snaps(ci, &session, 0);
spin_unlock(&inode->i_lock);
iput(inode);
spin_lock(&mdsc->snap_flush_lock);
@ -816,6 +818,7 @@ void ceph_handle_snap(struct ceph_mds_client *mdsc,
};
struct inode *inode = ceph_find_inode(sb, vino);
struct ceph_inode_info *ci;
struct ceph_snap_realm *oldrealm;
if (!inode)
continue;
@ -841,18 +844,19 @@ void ceph_handle_snap(struct ceph_mds_client *mdsc,
dout(" will move %p to split realm %llx %p\n",
inode, realm->ino, realm);
/*
* Remove the inode from the realm's inode
* list, but don't add it to the new realm
* yet. We don't want the cap_snap to be
* queued (again) by ceph_update_snap_trace()
* below. Queue it _now_, under the old context.
* Move the inode to the new realm
*/
spin_lock(&realm->inodes_with_caps_lock);
list_del_init(&ci->i_snap_realm_item);
list_add(&ci->i_snap_realm_item,
&realm->inodes_with_caps);
oldrealm = ci->i_snap_realm;
ci->i_snap_realm = realm;
spin_unlock(&realm->inodes_with_caps_lock);
spin_unlock(&inode->i_lock);
ceph_queue_cap_snap(ci);
ceph_get_snap_realm(mdsc, realm);
ceph_put_snap_realm(mdsc, oldrealm);
iput(inode);
continue;
@ -880,43 +884,9 @@ void ceph_handle_snap(struct ceph_mds_client *mdsc,
ceph_update_snap_trace(mdsc, p, e,
op == CEPH_SNAP_OP_DESTROY);
if (op == CEPH_SNAP_OP_SPLIT) {
/*
* ok, _now_ add the inodes into the new realm.
*/
for (i = 0; i < num_split_inos; i++) {
struct ceph_vino vino = {
.ino = le64_to_cpu(split_inos[i]),
.snap = CEPH_NOSNAP,
};
struct inode *inode = ceph_find_inode(sb, vino);
struct ceph_inode_info *ci;
if (!inode)
continue;
ci = ceph_inode(inode);
spin_lock(&inode->i_lock);
if (list_empty(&ci->i_snap_realm_item)) {
struct ceph_snap_realm *oldrealm =
ci->i_snap_realm;
dout(" moving %p to split realm %llx %p\n",
inode, realm->ino, realm);
spin_lock(&realm->inodes_with_caps_lock);
list_add(&ci->i_snap_realm_item,
&realm->inodes_with_caps);
ci->i_snap_realm = realm;
spin_unlock(&realm->inodes_with_caps_lock);
ceph_get_snap_realm(mdsc, realm);
ceph_put_snap_realm(mdsc, oldrealm);
}
spin_unlock(&inode->i_lock);
iput(inode);
}
if (op == CEPH_SNAP_OP_SPLIT)
/* we took a reference when we created the realm, above */
ceph_put_snap_realm(mdsc, realm);
}
__cleanup_empty_realms(mdsc);

5
fs/ceph/super.h
View file

@ -690,6 +690,8 @@ struct ceph_snap_realm {
struct list_head empty_item; /* if i have ref==0 */
struct list_head dirty_item; /* if realm needs new context */
/* the current set of snaps for this realm */
struct ceph_snap_context *cached_context;
@ -826,7 +828,8 @@ extern void ceph_put_cap_refs(struct ceph_inode_info *ci, int had);
extern void ceph_put_wrbuffer_cap_refs(struct ceph_inode_info *ci, int nr,
struct ceph_snap_context *snapc);
extern void __ceph_flush_snaps(struct ceph_inode_info *ci,
struct ceph_mds_session **psession);
struct ceph_mds_session **psession,
int again);
extern void ceph_check_caps(struct ceph_inode_info *ci, int flags,
struct ceph_mds_session *session);
extern void ceph_check_delayed_caps(struct ceph_mds_client *mdsc);

4
include/linux/fs.h
View file

@ -1093,6 +1093,10 @@ struct file_lock {
#include <linux/fcntl.h>
/* temporary stubs for BKL removal */
#define lock_flocks() lock_kernel()
#define unlock_flocks() unlock_kernel()
extern void send_sigio(struct fown_struct *fown, int fd, int band);
#ifdef CONFIG_FILE_LOCKING

8
kernel/sched.c
View file

@ -3513,9 +3513,9 @@ void task_times(struct task_struct *p, cputime_t *ut, cputime_t *st)
rtime = nsecs_to_cputime(p->se.sum_exec_runtime);
if (total) {
u64 temp;
u64 temp = rtime;
temp = (u64)(rtime * utime);
temp *= utime;
do_div(temp, total);
utime = (cputime_t)temp;
} else
@ -3546,9 +3546,9 @@ void thread_group_times(struct task_struct *p, cputime_t *ut, cputime_t *st)
rtime = nsecs_to_cputime(cputime.sum_exec_runtime);
if (total) {
u64 temp;
u64 temp = rtime;
temp = (u64)(rtime * cputime.utime);
temp *= cputime.utime;
do_div(temp, total);
utime = (cputime_t)temp;
} else

2
kernel/sched_fair.c
View file

@ -3630,7 +3630,7 @@ static inline int nohz_kick_needed(struct rq *rq, int cpu)
if (time_before(now, nohz.next_balance))
return 0;
if (!rq->nr_running)
if (rq->idle_at_tick)
return 0;
first_pick_cpu = atomic_read(&nohz.first_pick_cpu);