Pull more s390 updates from Martin Schwidefsky:
"The big thing in this second merge for s390 is the new eBPF JIT from
Michael which replaces the old 32-bit backend.
The remaining commits are bug fixes"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
s390/pci: add locking for fmb access
s390/pci: extract software counters from fmb
s390/dasd: Fix unresumed device after suspend/resume having no paths
s390/dasd: fix unresumed device after suspend/resume
s390/dasd: fix inability to set a DASD device offline
s390/mm: Fix memory hotplug for unaligned standby memory
s390/bpf: Add s390x eBPF JIT compiler backend
s390: Use bool function return values of true/false not 1/0
Pull m68k fixes from Greg Ungerer:
"Nothing big, spelling fixes and fix/cleanup for ColdFire eth device setup"
* 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu:
m68knommu: fix fec setup warning for ColdFire 5271 builds
m68knommu: ColdFire 5271 only has a single FEC controller
m68k: Fix trivial typos in comments
Yes, it should work, but it's a bad idea. Not only did ARM64 not have
the 16-bit access code (there's a separate patch to add it), it's just
not a good atomic type. Some architectures fundamentally don't do
atomic accesses in them (alpha), and it's not like it saves any space
here anyway because of structure packing issues.
We normally should aim for flags to be "unsigned int" or "unsigned
long". And if space is at a premium, use a single byte (although that
causes problems on alpha again). There might be very special cases
where a 16-byte entity is really wanted, but this is not one of them.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Merge a set of fixes that we missed sending in before v4.0 release. These
will also be sent to -stable.
* fixes: (659 commits)
ARM: at91/dt: sama5d3 xplained: add phy address for macb1
kbuild: Create directory for target DTB
ARM: mvebu: Disable CPU Idle on Armada 38x
arm64: juno: Fix misleading name of UART reference clock
ARM: dts: sunxi: Remove overclocked/overvoltaged OPP
ARM: dts: sun4i: a10-lime: Override and remove 1008MHz OPP setting
ARM: socfpga: dts: fix spi1 interrupt
ARM: dts: Fix gpio interrupts for dm816x
ARM: dts: dra7: remove ti,hwmod property from pcie phy
ARM: EXYNOS: Fix build breakage cpuidle on !SMP
ARM: OMAP: dmtimer: disable pm runtime on remove
ARM: OMAP: dmtimer: check for pm_runtime_get_sync() failure
ARM: dts: fix lid and power pin-functions for exynos5250-spring
ARM: dts: fix mmc node updates for exynos5250-spring
ARM: OMAP2+: Fix socbus family info for AM33xx devices
ARM: dts: omap3: Add missing dmas for crypto
+ Linux 4.0-rc4
Signed-off-by: Olof Johansson <olof@lixom.net>
Add handling of missed events in omap_dss_pm_notif which are
needed to support hibernation (suspend to disk).
Signed-off-by: Grygorii Strashko <Grygorii.Strashko@linaro.org>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
The doc refers to Documentation/devicetree/bindings/video/video-ports.txt
which does not exist. The documentation seems to be outdated and wants to
refer to Documentation/devicetree/bindings/graph.txt instead.
Signed-off-by: Javier Martinez Canillas <javier.martinez@collabora.co.uk>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
We don't need VT switch when suspending/resuming, so disable it. This
speeds up suspend/resume.
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Cc: NeilBrown <neil@brown.name>
The merge is clean, but the arm build fails afterwards,
due to API changes in the regulator tree.
I've included the patch into the merge to fix the build.
Signed-off-by: Dave Airlie <airlied@redhat.com>
Change the constant values for RGB444_1X12, RGB565_1X16, and YUV8_1X24 media
bus formats in anticipation of a merge conflict with the media tree, where
the old values are already taken by RBG888_1X24, RGB888_1X32_PADHI, and
VUY8_1X24, respectively.
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Pull turbostat update from Len Brown:
"Updates to the turbostat utility.
Just one kernel dependency in this batch -- added a #define to
msr-index.h"
* 'turbostat' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux:
tools/power turbostat: correct dumped pkg-cstate-limit value
tools/power turbostat: calculate TSC frequency from CPUID(0x15) on SKL
tools/power turbostat: correct DRAM RAPL units on recent Xeon processors
tools/power turbostat: Initial Skylake support
tools/power turbostat: Use $(CURDIR) instead of $(PWD) and add support for O= option in Makefile
tools/power turbostat: modprobe msr, if needed
tools/power turbostat: dump MSR_TURBO_RATIO_LIMIT2
tools/power turbostat: use new MSR_TURBO_RATIO_LIMIT names
x86 msr-index: define MSR_TURBO_RATIO_LIMIT,1,2
tools/power turbostat: label base frequency
tools/power turbostat: update PERF_LIMIT_REASONS decoding
tools/power turbostat: simplify default output
The test_data_1_le[] array is a const array of const char *. To avoid
dropping any const information, we need to use "const char * const *",
not just "const char **".
I'm not sure why the different test arrays end up having different
const'ness, but let's make the pointer we use to traverse them as const
as possible, since we modify neither the array of pointers _or_ the
pointers we find in the array.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This prevents a race between chown() and execve(), where chowning a
setuid-user binary to root would momentarily make the binary setuid
root.
This patch was mostly written by Linus Torvalds.
Signed-off-by: Jann Horn <jann@thejh.net>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Commit 8053871d0f ("smp: Fix smp_call_function_single_async()
locking") fixed the locking for the asynchronous smp-call case, but in
the process of moving the lock handling around, one of the error cases
ended up not unlocking the call data at all.
This went unnoticed on x86, because this is a "caller is buggy" case,
where the caller is trying to call a non-existent CPU. But apparently
ARM does that (at least under qemu-arm). Bindly doing cross-cpu calls
to random CPU's that aren't even online seems a bit fishy, but the error
handling was clearly not correct.
Simply add the missing "csd_unlock()" to the error path.
Reported-and-tested-by: Guenter Roeck <linux@roeck-us.net>
Analyzed-by: Rabin Vincent <rabin@rab.in>
Acked-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
They were for use by the deprecated first_cpu() and next_cpu() wrappers,
but sparc used them directly.
They're now replaced by cpumask_first / cpumask_next. And __next_cpu_nr
is completely obsolete.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Acked-by: David S. Miller <davem@davemloft.net>
Pull sparc fixes from David Miller
"Unfortunately, I brown paper bagged the generic iommu pool allocator
by applying the wrong revision of the patch series.
This reverts the bad one, and puts the right one in"
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc:
iommu-common: Fix PARISC compile-time warnings
sparc: Make LDC use common iommu poll management functions
sparc: Make sparc64 use scalable lib/iommu-common.c functions
Break up monolithic iommu table/lock into finer graularity pools and lock
sparc: Revert generic IOMMU allocator.
Some accumulated cleanup patches for kerneldoc and unused variables
as well as some lock bug fixes and adding privateport option for RDMA.
A quick check shows some merge-conflicts versus current-tip on
9p: use unsigned integers for nwqid/count
If you would prefer I can rebase, remerge and fix the patch but didn't
want to do that and look the for-next references.
Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
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Merge tag 'for-linus-4.1-merge-window' of git://git.kernel.org/pub/scm/linux/kernel/git/ericvh/v9fs
Pull 9pfs updates from Eric Van Hensbergen:
"Some accumulated cleanup patches for kerneldoc and unused variables as
well as some lock bug fixes and adding privateport option for RDMA"
* tag 'for-linus-4.1-merge-window' of git://git.kernel.org/pub/scm/linux/kernel/git/ericvh/v9fs:
net/9p: add a privport option for RDMA transport.
fs/9p: Initialize status in v9fs_file_do_lock.
net/9p: Initialize opts->privport as it should be.
net/9p: use memcpy() instead of snprintf() in p9_mount_tag_show()
9p: use unsigned integers for nwqid/count
9p: do not crash on unknown lock status code
9p: fix error handling in v9fs_file_do_lock
9p: remove unused variable in p9_fd_create()
9p: kerneldoc warning fixes
Sowmini Varadhan says:
====================
Generic IOMMU pooled allocator
Investigation of network performance on Sparc shows a high
degree of locking contention in the IOMMU allocator, and it
was noticed that the PowerPC code has a better locking model.
This patch series tries to extract the generic parts of the
PowerPC code so that it can be shared across multiple PCI
devices and architectures.
v10: resend patchv9 without RFC tag, and a new mail Message-Id,
(previous non-RFC attempt did not show up on the patchwork queue?)
Full revision history below:
v2 changes:
- incorporate David Miller editorial comments: sparc specific
fields moved from iommu-common into sparc's iommu_64.h
- make the npools value an input parameter, for the case when
the iommu map size is not very large
- cookie_to_index mapping, and optimizations for span-boundary
check, for use case such as LDC.
v3: eliminate iommu_sparc, rearrange the ->demap indirection to
be invoked under the pool lock.
v4: David Miller review changes:
- s/IOMMU_ERROR_CODE/DMA_ERROR_CODE
- page_table_map_base and page_table_shift are unsigned long, not u32.
v5: removed ->cookie_to_index and ->demap indirection from the
iommu_tbl_ops The caller needs to call these functions as needed,
before invoking the generic arena allocator functions.
Added the "skip_span_boundary" argument to iommu_tbl_pool_init() for
those callers like LDC which do no care about span boundary checks.
v6: removed iommu_tbl_ops, and instead pass the ->flush_all as
an indirection to iommu_tbl_pool_init(); only invoke ->flush_all
when there is no large_pool, based on the assumption that large-pool
usage is infrequently encountered
v7: moved pool_hash initialization to lib/iommu-common.c and cleaned up
code duplication from sun4v/sun4u/ldc.
v8: Addresses BenH comments with one exception: I've left the
IOMMU_POOL_HASH as is, so that powerpc can tailor it to their
convenience. Discard trylock for simple spin_lock to acquire pool
v9: Addresses latest BenH comments: need_flush checks, add support
for dma mask and align_order.
v10: resend without RFC tag, and new mail Message-Id.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Fixes warnings due to
- no DMA_ERROR_CODE on PARISC,
- sizeof (unsigned long) == 4 bytes on PARISC.
Signed-off-by: Sowmini Varadhan <sowmini.varadhan@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Note that this conversion is only being done to consolidate the
code and ensure that the common code provides the sufficient
abstraction. It is not expected to result in any noticeable
performance improvement, as there is typically one ldc_iommu
per vnet_port, and each one has 8k entries, with a typical
request for 1-4 pages. Thus LDC uses npools == 1.
Signed-off-by: Sowmini Varadhan <sowmini.varadhan@oracle.com>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
In iperf experiments running linux as the Tx side (TCP client) with
10 threads results in a severe performance drop when TSO is disabled,
indicating a weakness in the software that can be avoided by using
the scalable IOMMU arena DMA allocation.
Baseline numbers before this patch:
with default settings (TSO enabled) : 9-9.5 Gbps
Disable TSO using ethtool- drops badly: 2-3 Gbps.
After this patch, iperf client with 10 threads, can give a
throughput of at least 8.5 Gbps, even when TSO is disabled.
Signed-off-by: Sowmini Varadhan <sowmini.varadhan@oracle.com>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Investigation of multithreaded iperf experiments on an ethernet
interface show the iommu->lock as the hottest lock identified by
lockstat, with something of the order of 21M contentions out of
27M acquisitions, and an average wait time of 26 us for the lock.
This is not efficient. A more scalable design is to follow the ppc
model, where the iommu_map_table has multiple pools, each stretching
over a segment of the map, and with a separate lock for each pool.
This model allows for better parallelization of the iommu map search.
This patch adds the iommu range alloc/free function infrastructure.
Signed-off-by: Sowmini Varadhan <sowmini.varadhan@oracle.com>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
I applied the wrong version of this patch series, V4 instead
of V10, due to a patchwork bundling snafu.
Signed-off-by: David S. Miller <davem@davemloft.net>
HSW expanded MSR_PKG_CST_CONFIG_CONTROL.Package-C-State-Limit,
from bits[2:0] used by previous implementations, to [3:0].
The value 1000b is unlimited, and is used by BDW and SKL too.
Signed-off-by: Len Brown <len.brown@intel.com>
While not yet documented in the Software Developer's Manual,
the data-sheet for modern Xeon states that DRAM RAPL ENERGY units
are fixed at 15.3 uJ, rather than being discovered via MSR.
Before this patch, DRAM energy on these products is over-stated by turbostat
because the RAPL units are 4x larger.
ref: "Xeon E5-2600 v3/E5-1600 v3 Datasheet Volume 2"
http://www.intel.com/content/dam/www/public/us/en/documents/datasheets/xeon-e5-v3-datasheet-vol-2.pdf
Signed-off-by: Andrey Semin <andrey.semin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
Skylake adds some additional residency counters.
Skylake supports a different mix of RAPL registers
from any previous product.
In most other ways, Skylake is like Broadwell.
Signed-off-by: Len Brown <len.brown@intel.com>
Since commit ee0778a301
("tools/power: turbostat: make Makefile a bit more capable")
turbostat's Makefile is using
[...]
BUILD_OUTPUT := $(PWD)
[...]
which obviously causes trouble when building "turbostat" with
make -C /usr/src/linux/tools/power/x86/turbostat ARCH=x86 turbostat
because GNU make does not update nor guarantee that $PWD is set.
This patch changes the Makefile to use $CURDIR instead, which GNU make
guarantees to set and update (i.e. when using "make -C ...") and also
adds support for the O= option (see "make help" in your root of your
kernel source tree for more details).
Link: https://bugs.gentoo.org/show_bug.cgi?id=533918
Fixes: ee0778a301 ("tools/power: turbostat: make Makefile a bit more capable")
Signed-off-by: Thomas D. <whissi@whissi.de>
Cc: Mark Asselstine <mark.asselstine@windriver.com>
Signed-off-by: Len Brown <len.brown@intel.com>
Some distros (Ubuntu) ship the msr driver as a module.
If turbosat is run as root on those systems, and discovers
that there is no /dev/cpu/cpu0/msr, it will now "modprobe msr"
for the user.
If not root, the modprobe attempt will fail, and turbostat will exit as before:
turbostat: no /dev/cpu/0/msr, Try "# modprobe msr" : No such file or directory
Signed-off-by: Len Brown <len.brown@intel.com>
s/MSR_NHM_TURBO_RATIO_LIMIT/MSR_TURBO_RATIO_LIMIT/
s/MSR_IVT_TURBO_RATIO_LIMIT/MSR_TURBO_RATIO_LIMIT1/
syntax only -- use the documented strings describing these registers.
Signed-off-by: Len Brown <len.brown@intel.com>
Pull PMEM driver from Ingo Molnar:
"This is the initial support for the pmem block device driver:
persistent non-volatile memory space mapped into the system's physical
memory space as large physical memory regions.
The driver is based on Intel code, written by Ross Zwisler, with fixes
by Boaz Harrosh, integrated with x86 e820 memory resource management
and tidied up by Christoph Hellwig.
Note that there were two other separate pmem driver submissions to
lkml: but apparently all parties (Ross Zwisler, Boaz Harrosh) are
reasonably happy with this initial version.
This version enables minimal support that enables persistent memory
devices out in the wild to work as block devices, identified through a
magic (non-standard) e820 flag and auto-discovered if
CONFIG_X86_PMEM_LEGACY=y, or added explicitly through manipulating the
memory maps via the "memmap=..." boot option with the new, special '!'
modifier character.
Limitations: this is a regular block device, and since the pmem areas
are not struct page backed, they are invisible to the rest of the
system (other than the block IO device), so direct IO to/from pmem
areas, direct mmap() or XIP is not possible yet. The page cache will
also shadow and double buffer pmem contents, etc.
Initial support is for x86"
* 'x86-pmem-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
drivers/block/pmem: Fix 32-bit build warning in pmem_alloc()
drivers/block/pmem: Add a driver for persistent memory
x86/mm: Add support for the non-standard protected e820 type
Pull x86 fixes from Ingo Molnar:
"This tree includes:
- an FPU related crash fix
- a ptrace fix (with matching testcase in tools/testing/selftests/)
- an x86 Kconfig DMA-config defaults tweak to better avoid
non-working drivers"
* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
config: Enable NEED_DMA_MAP_STATE by default when SWIOTLB is selected
x86/fpu: Load xsave pointer *after* initialization
x86/ptrace: Fix the TIF_FORCED_TF logic in handle_signal()
x86, selftests: Add single_step_syscall test
Pull perf updates from Ingo Molnar:
"This update has mostly fixes, but also other bits:
- perf tooling fixes
- PMU driver fixes
- Intel Broadwell PMU driver HW-enablement for LBR callstacks
- a late coming 'perf kmem' tool update that enables it to also
analyze page allocation data. Note, this comes with MM tracepoint
changes that we believe to not break anything: because it changes
the formerly opaque 'struct page *' field that uniquely identifies
pages to 'pfn' which identifies pages uniquely too, but isn't as
opaque and can be used for other purposes as well"
* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
perf/x86/intel/pt: Fix and clean up error handling in pt_event_add()
perf/x86/intel: Add Broadwell support for the LBR callstack
perf/x86/intel/rapl: Fix energy counter measurements but supporing per domain energy units
perf/x86/intel: Fix Core2,Atom,NHM,WSM cycles:pp events
perf/x86: Fix hw_perf_event::flags collision
perf probe: Fix segfault when probe with lazy_line to file
perf probe: Find compilation directory path for lazy matching
perf probe: Set retprobe flag when probe in address-based alternative mode
perf kmem: Analyze page allocator events also
tracing, mm: Record pfn instead of pointer to struct page
Pull locking fixes from Ingo Molnar:
"Two fixes: an smp-call fix and a lockdep fix"
* 'locking-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
smp: Fix smp_call_function_single_async() locking
lockdep: Make print_lock() robust against concurrent release
Pull usernamespace mount fixes from Eric Biederman:
"Way back in October Andrey Vagin reported that umount(MNT_DETACH)
could be used to defeat MNT_LOCKED. As I worked to fix this I
discovered that combined with mount propagation and an appropriate
selection of shared subtrees a reference to a directory on an
unmounted filesystem is not necessary.
That MNT_DETACH is allowed in user namespace in a form that can break
MNT_LOCKED comes from my early misunderstanding what MNT_DETACH does.
To avoid breaking existing userspace the conflict between MNT_DETACH
and MNT_LOCKED is fixed by leaving mounts that are locked to their
parents in the mount hash table until the last reference goes away.
While investigating this issue I also found an issue with
__detach_mounts. The code was unnecessarily and incorrectly
triggering mount propagation. Resulting in too many mounts going away
when a directory is deleted, and too many cpu cycles are burned while
doing that.
Looking some more I realized that __detach_mounts by only keeping
mounts connected that were MNT_LOCKED it had the potential to still
leak information so I tweaked the code to keep everything locked
together that possibly could be.
This code was almost ready last cycle but Al invented fs_pin which
slightly simplifies this code but required rewrites and retesting, and
I have not been in top form for a while so it took me a while to get
all of that done. Similiarly this pull request is late because I have
been feeling absolutely miserable all week.
The issue of being able to escape a bind mount has not yet been
addressed, as the fixes are not yet mature"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace:
mnt: Update detach_mounts to leave mounts connected
mnt: Fix the error check in __detach_mounts
mnt: Honor MNT_LOCKED when detaching mounts
fs_pin: Allow for the possibility that m_list or s_list go unused.
mnt: Factor umount_mnt from umount_tree
mnt: Factor out unhash_mnt from detach_mnt and umount_tree
mnt: Fail collect_mounts when applied to unmounted mounts
mnt: Don't propagate unmounts to locked mounts
mnt: On an unmount propagate clearing of MNT_LOCKED
mnt: Delay removal from the mount hash.
mnt: Add MNT_UMOUNT flag
mnt: In umount_tree reuse mnt_list instead of mnt_hash
mnt: Don't propagate umounts in __detach_mounts
mnt: Improve the umount_tree flags
mnt: Use hlist_move_list in namespace_unlock
Pull f2fs updates from Jaegeuk Kim:
"New features:
- in-memory extent_cache
- fs_shutdown to test power-off-recovery
- use inline_data to store symlink path
- show f2fs as a non-misc filesystem
Major fixes:
- avoid CPU stalls on sync_dirty_dir_inodes
- fix some power-off-recovery procedure
- fix handling of broken symlink correctly
- fix missing dot and dotdot made by sudden power cuts
- handle wrong data index during roll-forward recovery
- preallocate data blocks for direct_io
... and a bunch of minor bug fixes and cleanups"
* tag 'for-f2fs-4.1' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs: (71 commits)
f2fs: pass checkpoint reason on roll-forward recovery
f2fs: avoid abnormal behavior on broken symlink
f2fs: flush symlink path to avoid broken symlink after POR
f2fs: change 0 to false for bool type
f2fs: do not recover wrong data index
f2fs: do not increase link count during recovery
f2fs: assign parent's i_mode for empty dir
f2fs: add F2FS_INLINE_DOTS to recover missing dot dentries
f2fs: fix mismatching lock and unlock pages for roll-forward recovery
f2fs: fix sparse warnings
f2fs: limit b_size of mapped bh in f2fs_map_bh
f2fs: persist system.advise into on-disk inode
f2fs: avoid NULL pointer dereference in f2fs_xattr_advise_get
f2fs: preallocate fallocated blocks for direct IO
f2fs: enable inline data by default
f2fs: preserve extent info for extent cache
f2fs: initialize extent tree with on-disk extent info of inode
f2fs: introduce __{find,grab}_extent_tree
f2fs: split set_data_blkaddr from f2fs_update_extent_cache
f2fs: enable fast symlink by utilizing inline data
...
of the i2o docs, some new Chinese translations, and, hopefully, the README
fix that will end the flow of identical patches to that file.
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Merge tag 'docs-for-linus' of git://git.lwn.net/linux-2.6
Pull documentation updates from Jonathan Corbet:
"Numerous fixes, the overdue removal of the i2o docs, some new Chinese
translations, and, hopefully, the README fix that will end the flow of
identical patches to that file"
* tag 'docs-for-linus' of git://git.lwn.net/linux-2.6: (34 commits)
Documentation/memcg: update memcg/kmem status
Documentation: blackfin: Makefile: Typo building issue
Documentation/vm/pagemap.txt: correct location of page-types tool
Documentation/memory-barriers.txt: typo fix
doc: Add guest_nice column to example output of `cat /proc/stat'
Documentation/kernel-parameters: Move "eagerfpu" to its right place
Documentation: gpio: Update ACPI part of the document to mention _DSD
docs/completion.txt: Various tweaks and corrections
doc: completion: context, scope and language fixes
Documentation:Update Documentation/zh_CN/arm64/memory.txt
Documentation:Update Documentation/zh_CN/arm64/booting.txt
Documentation: Chinese translation of arm64/legacy_instructions.txt
DocBook media: fix broken EIA hyperlink
Documentation: tweak the maintainers entry
README: Change gzip/bzip2 to xz compression format
README: Update version number reference
doc:pci: Fix typo in Documentation/PCI
Documentation: drm: Use '->' when describing access through pointers.
Documentation: Remove mentioning of block barriers
Documentation/email-clients.txt: Fix one grammar mistake, add extra info about TB
...
While it is not used by newer userspace anymore, the older userspace was
utilizing HIDP_VIRTUAL_CABLE_UNPLUG and HIDP_BOOT_PROTOCOL_MODE flags
when adding a new HIDP connection.
The flags validation is important, but we can not break older userspace
and with that allow providing these flags even if newer userspace does
not use them anymore.
Reported-and-tested-by: Jörg Otte <jrg.otte@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
A huge amount of NIC drivers use the DMA API, however if
compiled under 32-bit an very important part of the DMA API can
be ommitted leading to the drivers not working at all
(especially if used with 'swiotlb=force iommu=soft').
As Prashant Sreedharan explains it: "the driver [tg3] uses
DEFINE_DMA_UNMAP_ADDR(), dma_unmap_addr_set() to keep a copy of
the dma "mapping" and dma_unmap_addr() to get the "mapping"
value. On most of the platforms this is a no-op, but ... with
"iommu=soft and swiotlb=force" this house keeping is required,
... otherwise we pass 0 while calling pci_unmap_/pci_dma_sync_
instead of the DMA address."
As such enable this even when using 32-bit kernels.
Reported-by: Ian Jackson <Ian.Jackson@eu.citrix.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Acked-by: David S. Miller <davem@davemloft.net>
Acked-by: Prashant Sreedharan <prashant@broadcom.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Michael Chan <mchan@broadcom.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: boris.ostrovsky@oracle.com
Cc: cascardo@linux.vnet.ibm.com
Cc: david.vrabel@citrix.com
Cc: sanjeevb@broadcom.com
Cc: siva.kallam@broadcom.com
Cc: vyasevich@gmail.com
Cc: xen-devel@lists.xensource.com
Link: http://lkml.kernel.org/r/20150417190448.GA9462@l.oracle.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
devicetree changes queued up for v4.1. Here are the highlights:
- Lots of unittest cleanup from Frank Rowand
- Bugfixes and updates to the of_graph code
- Tighten up of_get_mac_address() code
- Documentation updates
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Merge tag 'devicetree-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/glikely/linux
Pull devicetree changes from Grant Likely:
"Here are the devicetree changes queued up for v4.1. Nothing really
exciting here. Rob has another few commits for big-endian attached
UARTs, but those will be sent in a separate merge request since they
haven't been as thoroughly tested as this batch.
Here are the highlights:
- lots of unittest cleanup from Frank Rowand
- bugfixes and updates to the of_graph code
- tighten up of_get_mac_address() code
- documentation updates"
* tag 'devicetree-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/glikely/linux:
of/unittest: Fix of_platform_depopulate test case
of/unittest: early return from test skips tests
of/unittest: breadcrumbs to reduce pain of future maintainers
of/unittest: reduce checkpatch noise - line after declarations
of/unittest: typo in error string
of/unittest: add const where needed
of_net: factor out repetitive code from of_get_mac_address()
drivers/of: Add empty ranges quirk for PA-Semi
of: Allow selection of OF_DYNAMIC and OF_OVERLAY if OF_UNITTEST
of: Empty node & property flag accessors when !OF
of: Explicitly include linux/types.h in of_graph.h
dt-bindings: brcm: rationalize Broadcom documentation naming
of/unittest: replace 'selftest' with 'unittest'
Documentation: rename of_selftest.txt to of_unittest.txt
Documentation: update the of_selftest.txt
dt: OF_UNITTEST make dependency broken
MAINTAINERS: Pantelis Antoniou device tree overlay maintainer
of: Add of_graph_get_port_by_id function
of: Add for_each_endpoint_of_node helper macro
of: Decrement refcount of previous endpoint in of_graph_get_next_endpoint
cycle:
- A new GPIO hogging mechanism has been added. This can
be used on boards that want to drive some GPIO line high,
low, or set it as input on boot and then never touch it
again. For some embedded systems this is bliss and
simplifies things to a great extent.
- Some API cleanup and closure: gpiod_get_array() and
gpiod_put_array() has been added to get and put GPIOs
in bulk as was possible with the non-descriptor API.
- Encapsulate cross-calls to the pin control subsystem in
<linux/gpio/driver.h>. Now this should be the only header
any GPIO driver needs to include or something is wrong.
Cleanups restricting drivers to this include are welcomed
if tested.
- Sort the GPIO Kconfig and split it into submenus, as
it was becoming and unstructured, illogical and
unnavigatable mess. I hope this is easier to follow.
Menus that require a certain subsystem like I2C can
now be hidden nicely for example, still working on
others.
- New drivers:
- New driver for the Altera Soft GPIO.
- The F7188x driver now handles the F71869 and
F71869A variants.
- The MIPS Loongson driver has been moved to
drivers/gpio for consolidation and cleanup.
- Cleanups:
- The MAX732x is converted to use the GPIOLIB_IRQCHIP
infrastructure.
- The PCF857x is converted to use the GPIOLIB_IRQCHIP
infrastructure.
- Radical cleanup of the OMAP driver.
- Misc:
- Enable the DWAPB GPIO for all architectures. This is
a "hard IP" block from Synopsys which has started to
turn up in so diverse architectures as X86 Quark, ARC
and a slew of ARM systems. So even though it's not an
expander, it's generic enough to be available for all.
- We add a mock GPIO on Crystalcove PMIC after a long
discussion with Daniel Vetter et al, tracing back to
the shootout at the kernel summit where DRM drivers
and sub-componentization was discussed. In this case
a mock GPIO is assumed to be the best compromise
gaining some reuse of infrastructure without making
DRM drivers overly complex at the same time. Let's
see.
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Merge tag 'gpio-v4.1-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio
Pull GPIO updates from Linus Walleij:
"This is the bulk of GPIO changes for the v4.1 development cycle:
- A new GPIO hogging mechanism has been added. This can be used on
boards that want to drive some GPIO line high, low, or set it as
input on boot and then never touch it again. For some embedded
systems this is bliss and simplifies things to a great extent.
- Some API cleanup and closure: gpiod_get_array() and
gpiod_put_array() has been added to get and put GPIOs in bulk as
was possible with the non-descriptor API.
- Encapsulate cross-calls to the pin control subsystem in
<linux/gpio/driver.h>. Now this should be the only header any GPIO
driver needs to include or something is wrong. Cleanups
restricting drivers to this include are welcomed if tested.
- Sort the GPIO Kconfig and split it into submenus, as it was
becoming and unstructured, illogical and unnavigatable mess. I
hope this is easier to follow. Menus that require a certain
subsystem like I2C can now be hidden nicely for example, still
working on others.
- New drivers:
- New driver for the Altera Soft GPIO.
- The F7188x driver now handles the F71869 and F71869A variants.
- The MIPS Loongson driver has been moved to drivers/gpio for
consolidation and cleanup.
- Cleanups:
- The MAX732x is converted to use the GPIOLIB_IRQCHIP
infrastructure.
- The PCF857x is converted to use the GPIOLIB_IRQCHIP
infrastructure.
- Radical cleanup of the OMAP driver.
- Misc:
- Enable the DWAPB GPIO for all architectures. This is a "hard
IP" block from Synopsys which has started to turn up in so
diverse architectures as X86 Quark, ARC and a slew of ARM
systems. So even though it's not an expander, it's generic
enough to be available for all.
- We add a mock GPIO on Crystalcove PMIC after a long discussion
with Daniel Vetter et al, tracing back to the shootout at the
kernel summit where DRM drivers and sub-componentization was
discussed. In this case a mock GPIO is assumed to be the best
compromise gaining some reuse of infrastructure without making
DRM drivers overly complex at the same time. Let's see"
* tag 'gpio-v4.1-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio: (62 commits)
Revert "gpio: sch: use uapi/linux/pci_ids.h directly"
gpio: dwapb: remove dependencies
gpio: dwapb: enable for ARC
gpio: removing kfree remove functionality
gpio: mvebu: Fix mask/unmask managment per irq chip type
gpio: split GPIO drivers in submenus
gpio: move MFD GPIO drivers under their own comment
gpio: move BCM Kona Kconfig option
gpio: arrange SPI Kconfig symbols alphabetically
gpio: arrange PCI GPIO controllers alphabetically
gpio: arrange I2C Kconfig symbols alphabetically
gpio: arrange Kconfig symbols alphabetically
gpio: ich: Implement get_direction function
gpio: use (!foo) instead of (foo == NULL)
gpio: arizona: drop owner assignment from platform_drivers
gpio: max7300: remove 'ret' variable
gpio: use devm_kzalloc
gpio: sch: use uapi/linux/pci_ids.h directly
gpio: x-gene: fix devm_ioremap_resource() check
gpio: loongson: Add Loongson-3A/3B GPIO driver support
...
Pull i2c fixes from Wolfram Sang:
"Two buildfixes for I2C based on your tree from the day before
yesterday. Sadly, these build errors never reached me while the
patches were sitting in -next. Need to fix that"
* 'i2c/for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
i2c: core: Export bus recovery functions
i2c: jz4780: Fix build for m68k and sparc64
full blk-mq support to request-based DM.
- disabled by default but user can opt-in with CONFIG_DM_MQ_DEFAULT
- depends on some blk-mq changes from Jens' for-4.1/core branch so
that explains why this pull is built on linux-block.git
- Update DM to use name_to_dev_t() rather than open-coding a less
capable device parser.
- includes a couple small improvements to name_to_dev_t() that offer
stricter constraints that DM's code provided.
- Improvements to the dm-cache "mq" cache replacement policy.
- A DM crypt crypt_ctr() error path fix and an async crypto deadlock fix.
- A small efficiency improvement for DM crypt decryption by leveraging
immutable biovecs.
- Add error handling modes for corrupted blocks to DM verity.
- A new "log-writes" DM target from Josef Bacik that is meant for
file system developers to test file system integrity at particular
points in the life of a file system.
- A few DM log userspace cleanups and fixes.
- A few Documentation fixes (for thin, cache, crypt and switch).
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Merge tag 'dm-4.1-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm
Pull device mapper updates from Mike Snitzer:
- the most extensive changes this cycle are the DM core improvements to
add full blk-mq support to request-based DM.
- disabled by default but user can opt-in with CONFIG_DM_MQ_DEFAULT
- depends on some blk-mq changes from Jens' for-4.1/core branch so
that explains why this pull is built on linux-block.git
- update DM to use name_to_dev_t() rather than open-coding a less
capable device parser.
- includes a couple small improvements to name_to_dev_t() that offer
stricter constraints that DM's code provided.
- improvements to the dm-cache "mq" cache replacement policy.
- a DM crypt crypt_ctr() error path fix and an async crypto deadlock
fix
- a small efficiency improvement for DM crypt decryption by leveraging
immutable biovecs
- add error handling modes for corrupted blocks to DM verity
- a new "log-writes" DM target from Josef Bacik that is meant for file
system developers to test file system integrity at particular points
in the life of a file system
- a few DM log userspace cleanups and fixes
- a few Documentation fixes (for thin, cache, crypt and switch)
* tag 'dm-4.1-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm: (34 commits)
dm crypt: fix missing error code return from crypt_ctr error path
dm crypt: fix deadlock when async crypto algorithm returns -EBUSY
dm crypt: leverage immutable biovecs when decrypting on read
dm crypt: update URLs to new cryptsetup project page
dm: add log writes target
dm table: use bool function return values of true/false not 1/0
dm verity: add error handling modes for corrupted blocks
dm thin: remove stale 'trim' message documentation
dm delay: use msecs_to_jiffies for time conversion
dm log userspace base: fix compile warning
dm log userspace transfer: match wait_for_completion_timeout return type
dm table: fall back to getting device using name_to_dev_t()
init: stricter checking of major:minor root= values
init: export name_to_dev_t and mark name argument as const
dm: add 'use_blk_mq' module param and expose in per-device ro sysfs attr
dm: optimize dm_mq_queue_rq to _not_ use kthread if using pure blk-mq
dm: add full blk-mq support to request-based DM
dm: impose configurable deadline for dm_request_fn's merge heuristic
dm sysfs: introduce ability to add writable attributes
dm: don't start current request if it would've merged with the previous
...
Dan Carpenter reported that pt_event_add() has buggy
error handling logic: it returns 0 instead of -EBUSY when
it fails to start a newly added event.
Furthermore, the control flow in this function is messy,
with cleanup labels mixed with direct returns.
Fix the bug and clean up the code by converting it to
a straight fast path for the regular non-failing case,
plus a clear sequence of cascading goto labels to do
all cleanup.
NOTE: I materially changed the existing clean up logic in the
pt_event_start() failure case to use the direct
perf_aux_output_end() path, not pt_event_del(), because
perf_aux_output_end() is enough here.
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Arnaldo Carvalho de Melo <acme@kernel.org>
Cc: Julia Lawall <julia.lawall@lip6.fr>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/20150416103830.GB7847@gmail.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Pull IDE update from David Miller:
"Just one change, getting rid of usage of the deprecated PCI DMA
interfaces in the IDE drivers"
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/ide:
ide: remove deprecated use of pci api
Pull networking fixes from David Miller:
1) Fix verifier memory corruption and other bugs in BPF layer, from
Alexei Starovoitov.
2) Add a conservative fix for doing BPF properly in the BPF classifier
of the packet scheduler on ingress. Also from Alexei.
3) The SKB scrubber should not clear out the packet MARK and security
label, from Herbert Xu.
4) Fix oops on rmmod in stmmac driver, from Bryan O'Donoghue.
5) Pause handling is not correct in the stmmac driver because it
doesn't take into consideration the RX and TX fifo sizes. From
Vince Bridgers.
6) Failure path missing unlock in FOU driver, from Wang Cong.
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (44 commits)
net: dsa: use DEVICE_ATTR_RW to declare temp1_max
netns: remove BUG_ONs from net_generic()
IB/ipoib: Fix ndo_get_iflink
sfc: Fix memcpy() with const destination compiler warning.
altera tse: Fix network-delays and -retransmissions after high throughput.
net: remove unused 'dev' argument from netif_needs_gso()
act_mirred: Fix bogus header when redirecting from VLAN
inet_diag: fix access to tcp cc information
tcp: tcp_get_info() should fetch socket fields once
net: dsa: mv88e6xxx: Add missing initialization in mv88e6xxx_set_port_state()
skbuff: Do not scrub skb mark within the same name space
Revert "net: Reset secmark when scrubbing packet"
bpf: fix two bugs in verification logic when accessing 'ctx' pointer
bpf: fix bpf helpers to use skb->mac_header relative offsets
stmmac: Configure Flow Control to work correctly based on rxfifo size
stmmac: Enable unicast pause frame detect in GMAC Register 6
stmmac: Read tx-fifo-depth and rx-fifo-depth from the devicetree
stmmac: Add defines and documentation for enabling flow control
stmmac: Add properties for transmit and receive fifo sizes
stmmac: fix oops on rmmod after assigning ip addr
...
Pull sparc updates from David Miller:
"The PowerPC folks have a really nice scalable IOMMU pool allocator
that we wanted to make use of for sparc. So here we have a series
that abstracts out their code into a common layer that anyone can make
use of.
Sparc is converted, and the PowerPC folks have reviewed and ACK'd this
series and plan to convert PowerPC over as well"
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc:
iommu-common: Fix PARISC compile-time warnings
sparc: Make LDC use common iommu poll management functions
sparc: Make sparc64 use scalable lib/iommu-common.c functions
sparc: Break up monolithic iommu table/lock into finer graularity pools and lock
Pull arch/tile updates from Chris Metcalf:
"These are mostly nohz_full changes, plus a smattering of minor fixes
(notably a couple for ftrace)"
* git://git.kernel.org/pub/scm/linux/kernel/git/cmetcalf/linux-tile:
tile: nohz: warn if nohz_full uses hypervisor shared cores
tile: ftrace: fix function_graph tracer issues
tile: map data region shadow of kernel as R/W
tile: support CONTEXT_TRACKING and thus NOHZ_FULL
tile: support arch_irq_work_raise
arch: tile: fix null pointer dereference on pt_regs pointer
tile/elf: reorganize notify_exec()
tile: use si_int instead of si_ptr for compat_siginfo