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Using devm_iio_device_alloc makes code simpler.
Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Acked-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
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Signed-off-by: Peter Meerwald <pmeerw@pmeerw.net>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
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the TI TMP006 is a non-contact temperature sensor with I2C interface;
it measures the surface temperature of a distance object using a
thermopile to absorb IR energy emitted from the object
the sensor has two channels: IR sensor voltage (16-bit) and reference
temperature of the chip (14-bit); datasheet is here:
http://www.ti.com/lit/ds/symlink/tmp006.pdf
v2 (thanks to Grygorii Strashko, Lars-Peter Clausen, Jonathan Cameron
for review comments):
* power down device on driver remove
* use sign_extend32()
* style cleanup
* add comments what channel raw LSBs mean
* spelling of thermopile
Signed-off-by: Peter Meerwald <pmeerw@pmeerw.net>
Cc: Grygorii Strashko <grygorii.strashko@ti.com>
Cc: Lars-Peter Clausen <lars@metafoo.de>
Cc: Jonathan Cameron <jic23@kernel.org>
Cc: LM Sensors <lm-sensors@lm-sensors.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
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The following race can lead to a loss of i_disksize update from truncate
thus resulting in a wrong inode size if the inode size isn't updated
again before inode is reclaimed:
ext4_setattr() mpage_map_and_submit_extent()
EXT4_I(inode)->i_disksize = attr->ia_size;
... ...
disksize = ((loff_t)mpd->first_page) << PAGE_CACHE_SHIFT
/* False because i_size isn't
* updated yet */
if (disksize > i_size_read(inode))
/* True, because i_disksize is
* already truncated */
if (disksize > EXT4_I(inode)->i_disksize)
/* Overwrite i_disksize
* update from truncate */
ext4_update_i_disksize()
i_size_write(inode, attr->ia_size);
For other places updating i_disksize such race cannot happen because
i_mutex prevents these races. Writeback is the only place where we do
not hold i_mutex and we cannot grab it there because of lock ordering.
We fix the race by doing both i_disksize and i_size update in truncate
atomically under i_data_sem and in mpage_map_and_submit_extent() we move
the check against i_size under i_data_sem as well.
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Cc: stable@vger.kernel.org
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Merge conditions in ext4_setattr() handling inode size changes, also
move ext4_begin_ordered_truncate() call somewhat earlier because it
simplifies error recovery in case of failure. Also add error handling in
case i_disksize update fails.
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Cc: stable@vger.kernel.org
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Inode size can arbitrarily change while writeback is in progress. When
ext4_writepages() has prepared a long extent for mapping and truncate
then reduces i_size, mpage_map_and_submit_buffers() will always map just
one buffer in a page instead of all of them due to lblk < blocks check.
So we end up not using all blocks we've allocated (thus leaking them)
and also delalloc accounting goes wrong manifesting as a warning like:
ext4_da_release_space:1333: ext4_da_release_space: ino 12, to_free 1
with only 0 reserved data blocks
Note that the problem can happen only when blocksize < pagesize because
otherwise we have only a single buffer in the page.
Fix the problem by removing the size check from the mapping loop. We
have an extent allocated so we have to use it all before checking for
i_size. We also rename add_page_bufs_to_extent() to
mpage_process_page_bufs() and make that function submit the page for IO
if all buffers (upto EOF) in it are mapped.
Reported-by: Dave Jones <davej@redhat.com>
Reported-by: Zheng Liu <gnehzuil.liu@gmail.com>
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Cc: stable@vger.kernel.org
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Currently the logic whether the current buffer can be added to an extent
of buffers to map is split between mpage_add_bh_to_extent() and
add_page_bufs_to_extent(). Move the whole logic to
mpage_add_bh_to_extent() which makes things a bit more straightforward
and make following i_size fixes easier.
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Cc: stable@vger.kernel.org
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reaim workfile.dbase test easily triggers warning in
ext4_da_update_reserve_space():
EXT4-fs warning (device ram0): ext4_da_update_reserve_space:365:
ino 12, allocated 1 with only 0 reserved metadata blocks (releasing 1
blocks with reserved 9 data blocks)
The problem is that (one of) tests creates file and then randomly writes
to it with O_SYNC. That results in writing back pages of the file in
random order so we create extents for written blocks say 0, 2, 4, 6, 8
- this last allocation also allocates new block for extents. Then we
writeout block 1 so we have extents 0-2, 4, 6, 8 and we release
indirect extent block because extents fit in the inode again. Then we
writeout block 10 and we need to allocate indirect extent block again
which triggers the warning because we don't have the reservation
anymore.
Fix the problem by giving back freed metadata blocks resulting from
extent merging into inode's reservation pool.
Signed-off-by: Jan Kara <jack@suse.cz>
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ext4 needs to convert allocated (metadata) blocks back into blocks
reserved for delayed allocation. Add functions into quota code for
supporting such operation.
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
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Fix this build error:
In file included from fs/exec.c:61:0:
arch/s390/include/asm/tlb.h:35:23: error: expected identifier or '(' before 'unsigned'
arch/s390/include/asm/tlb.h:36:1: warning: no semicolon at end of struct or union [enabled by default]
arch/s390/include/asm/tlb.h: In function 'tlb_gather_mmu':
arch/s390/include/asm/tlb.h:57:5: error: 'struct mmu_gather' has no member named 'end'
Broken due to commit 2b047252d0 ("Fix TLB gather virtual address range
invalidation corner cases").
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: stable@vger.kernel.org
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
[ Oh well. We had build testing for ppc amd um, but no s390 - Linus ]
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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I have taken a different job. I am removing myself as maintainer of
GRU. Dimitri will continue to maintain the SGI GRU driver, changing the
XP/XPC/XPNET maintainer to Cliff Whickman, but leaving behind my
personal email address to answer any questions about the design or
operation of the XP family of drivers.
Signed-off-by: Robin Holt <holt@sgi.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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In no journal mode, if an inode has recently been deleted, we
shouldn't reuse it right away. Otherwise it's possible, after an
unclean shutdown, to hit a situation where a recently deleted inode
gets reused for some other purpose before the inode table block has
been written to disk. However, if the directory entry has been
updated, then the directory entry will be pointing at the old inode
contents.
E2fsck will make sure the file system is consistent after the
unclean shutdown. However, if the recently deleted inode is a
character mode device, or an inode with the immutable bit set, even
after the file system has been fixed up by e2fsck, it can be
possible for a *.pyc file to be pointing at a character mode
device, and when python tries to open the *.pyc file, Hilarity
Ensues. We could change all of userspace to be very suspicious
about stat'ing files before opening them, and clearing the
immutable flag if necessary --- or we can just avoid reusing an
inode number if it has been recently deleted.
Google-Bug-Id: 10017573
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
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When ext4_rename() overwrites an already existing file, call
ext4_alloc_da_blocks() before starting the journal handle which
actually does the rename, instead of doing this afterwards. This
improves the likelihood that the contents will survive a crash if an
application replaces a file using the sequence:
1) write replacement contents to foo.new
2) <omit fsync of foo.new>
3) rename foo.new to foo
It is still not a guarantee, since ext4_alloc_da_blocks() is *not*
doing a file integrity sync; this means if foo.new is a very large
file, it may not be completely flushed out to disk.
However, for files smaller than a megabyte or so, any dirty pages
should be flushed out before we do the rename operation, and so at the
next journal commit, the CACHE FLUSH command will make sure al of
these pages are safely on the disk platter.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
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In ext4_rename(), don't start the journal handle until the the
directory entries have been successfully looked up.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
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Add a new fiemap flag which forces the all of the extents in an inode
to be cached in the extent_status tree. This is critically important
when using AIO to a preallocated file, since if we need to read in
blocks from the extent tree, the io_submit(2) system call becomes
synchronous, and the AIO is no longer "A", which is bad.
In addition, for most files which have an external leaf tree block,
the cost of caching the information in the extent status tree will be
less than caching the entire 4k block in the buffer cache. So it is
generally a win to keep the extent information cached.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
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When we read in an extent tree leaf block from disk, arrange to have
all of its entries cached. In nearly all cases the in-memory
representation will be more compact than the on-disk representation in
the buffer cache, and it allows us to get the information without
having to traverse the extent tree for successive extents.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Reviewed-by: Zheng Liu <wenqing.lz@taobao.com>
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Don't use an unsigned long long for the es_status flags; this requires
that we pass 64-bit values around which is painful on 32-bit systems.
Instead pass the extent status flags around using the low 4 bits of an
unsigned int, and shift them into place when we are reading or writing
es_pblk.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Reviewed-by: Zheng Liu <wenqing.lz@taobao.com>
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When we find an invalid extent tree block, report the block number of
the bad block for debugging purposes.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Reviewed-by: Zheng Liu <wenqing.lz@taobao.com>
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Refactor out the code needed to read the extent tree block into a
single read_extent_tree_block() function. In addition to simplifying
the code, it also makes sure that we call the ext4_ext_load_extent
tracepoint whenever we need to read an extent tree block from disk.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Reviewed-by: Zheng Liu <wenqing.lz@taobao.com>
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Commit 0713ed0cde76438d05849f1537d3aab46e099475 added
jbd2_journal_file_inode() call into ext4_block_zero_page_range().
However that function gets called from truncate path and thus inode
needn't have jinode attached - that happens in ext4_file_open() but
the file needn't be ever open since mount. Calling
jbd2_journal_file_inode() without jinode attached results in the oops.
We fix the problem by attaching jinode to inode also in ext4_truncate()
and ext4_punch_hole() when we are going to zero out partial blocks.
Reported-by: majianpeng <majianpeng@gmail.com>
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
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Pull ARM fixes from Russell King:
"The usual collection of random fixes. Also some further fixes to the
last set of security fixes, and some more from Will (which you may
already have in a slightly different form)"
* 'fixes' of git://git.linaro.org/people/rmk/linux-arm:
ARM: 7807/1: kexec: validate CPU hotplug support
ARM: 7812/1: rwlocks: retry trylock operation if strex fails on free lock
ARM: 7811/1: locks: use early clobber in arch_spin_trylock
ARM: 7810/1: perf: Fix array out of bounds access in armpmu_map_hw_event()
ARM: 7809/1: perf: fix event validation for software group leaders
ARM: Fix FIQ code on VIVT CPUs
ARM: Fix !kuser helpers case
ARM: Fix the world famous typo with is_gate_vma()
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git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k
Pull m68k fixes from Geert Uytterhoeven:
"These are two critical fixes, needed by distro kernels, and thus also
destined for stable:
- The do_div() commit fixes a crash in mounting btrfs volumes, which
was a regression from 3.2,
- The ARAnyM fix allows to have NatFeat drivers as loadable modules,
which is needed for initrds"
* 'for-3.11' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k:
m68k: Truncate base in do_div()
m68k/atari: ARAnyM - Fix NatFeat module support
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It is useful to see the arguments to perf_event_open and whether the
perf events ring buffer was mmapped per-cpu or per-thread.
That information will now be displayed when verbose is 2 i.e option -vv.
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Namhyung Kim <namhyung@gmail.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1376484517-5339-3-git-send-email-adrian.hunter@intel.com
[ fixup trivial conflict with fcb14f7 ]
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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The python/perf.so python binding links a subset of objects.
Re-implement 'verbose' and 'eprintf' so they (and consequently
'pr_debug') can be used in objects linked into pythin/perf.so.
Note 'eprintf' must be re-implemented because the full version links the
browser ui.
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Namhyung Kim <namhyung@gmail.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1376484517-5339-2-git-send-email-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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perf stat -a needs 10 open file descriptors per logical CPU
perf stat -a -dddd needs 20 open fds for each.
This implies that stat -a doesn't work on any system with the default
ulimit -n 1024 which has more than ~100 CPUs and stat -a -dddd doesn't
work on anything with more than 46 CPUs.
Longer term there needs to be probably some way to lower the file
descriptor requirements. This would need some changes in the kernel/user
interface.
But short term this patch just tries to increase the file descriptor
limit in perf itself, when it runs into a EMFILE.
It first sets it to the hard limit, and then tries to increase the hard
limit.
On Fedora systems the default seems to be soft limit 1024 and hard limit
4*1024. So even non root can support 409 or 186 CPUs respectively. root
can go far higher.
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Link: http://lkml.kernel.org/r/1375670486-15480-1-git-send-email-andi@firstfloor.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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4a4d371a missed builtin-kvm in the cleanup to remove the force option
to cmd_record.
Signed-off-by: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Link: http://lkml.kernel.org/r/1376512573-85012-1-git-send-email-dsahern@gmail.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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On sparc32, which includes <linux/swap.h> from <asm/pgtable_32.h>:
drivers/md/dm-cache-policy-mq.c:962:13: error: conflicting types for 'remove_mapping'
include/linux/swap.h:285:12: note: previous declaration of 'remove_mapping' was here
As mq_remove_mapping() already exists, and the local remove_mapping() is
used only once, inline it manually to avoid the conflict.
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Signed-off-by: Alasdair Kergon <agk@redhat.com>
Acked-by: Joe Thornber <ejt@redhat.com>
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It may be useful to register multiple patches with regmap, for example
one that depends on the device revision and one that depends on the system
configuration. Add support for doing this, appending any new patches to
the existing patches.
Signed-off-by: Mark Brown <broonie@linaro.org>
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Pull clock controller fixes from Michael Turquette:
"Two small fixes for the Zynq clock controller introduced in 3.11-rc1
and another Exynos clock patch which fixes a regression that prevents
the video pipeline from functioning on that platform"
* tag 'clk-fixes-for-linus' of git://git.linaro.org/people/mturquette/linux:
clk: exynos4: Add CLK_GET_RATE_NOCACHE flag for the Exynos4x12 ISP clocks
clk/zynq/clkc: Add CLK_SET_RATE_PARENT flag to ethernet muxes
clk/zynq/clkc: Add dedicated spinlock for the SWDT
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git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull power management fix from Rafael Wysocki:
"The removal of delayed_work_pending() checks from kernel/power/qos.c
done in 3.9 introduced a deadlock in pm_qos_work_fn().
Fix from Stephen Boyd"
* tag 'pm-3.11-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
PM / QoS: Fix workqueue deadlock when using pm_qos_update_request_timeout()
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git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
Pull sound fixes from Takashi Iwai:
"This batch contains a few USB audio fixes, a couple of HD-audio
quirks, various small ASoC driver fixes in addition to an ASoC core
fix that may lead to memory corruption.
Unfortunately slightly more volume than the previous pull request, but
all are reasonable regression fixes"
* tag 'sound-3.11' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
ALSA: hda - Add a fixup for Gateway LT27
ASoC: tegra: fix Tegra30 I2S capture parameter setup
ALSA: usb-audio: Fix invalid volume resolution for Logitech HD Webcam C525
ALSA: hda - Fix missing mute controls for CX5051
ALSA: usb-audio: fix automatic Roland/Yamaha MIDI detection
ALSA: 6fire: make buffers DMA-able (midi)
ALSA: 6fire: make buffers DMA-able (pcm)
ALSA: hda - Add pinfix for LG LW25 laptop
ASoC: cs42l52: Add new TLV for Beep Volume
ASoC: cs42l52: Reorder Min/Max and update to SX_TLV for Beep Volume
ASoC: dapm: Fix empty list check in dapm_new_mux()
ASoC: sgtl5000: fix buggy 'Capture Attenuate Switch' control
ASoC: sgtl5000: prevent playback to be muted when terminating concurrent capture
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
Pull USB fixes from Greg KH:
"Here are some small USB fixes for 3.11-rc6 that have accumulated.
Nothing huge, a EHCI fix that solves a much-reported audio USB
problem, some usb-serial driver endian fixes and other minor fixes, a
wireless USB oops fix, and two new quirks"
* tag 'usb-3.11-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb:
USB: keyspan: fix null-deref at disconnect and release
USB: mos7720: fix broken control requests
usb: add two quirky touchscreen
USB: ti_usb_3410_5052: fix big-endian firmware handling
USB: adutux: fix big-endian device-type reporting
USB: usbtmc: fix big-endian probe of Rigol devices
USB: mos7840: fix big-endian probe
USB-Serial: Fix error handling of usb_wwan
wusbcore: fix kernel panic when disconnecting a wireless USB->serial device
USB: EHCI: accept very late isochronous URBs
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Peripheral-only mode got broken in v3.11-rc1 because of unknown reasons.
Change the mode to OTG, in practice that should work equally well even
when/if the regression gets fixed.
Note that the peripheral-only regression is a separate patch, this change
is still correct as the role is handled by hardware.
Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi>
[tony@atomide.com: updated comments]
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Olof Johansson <olof@lixom.net>
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Commit b7e2e75a8c ("usb: gadget: drop unused USB_GADGET_MUSB_HDRC")
dropped a config symbol that was unused by the musb core, but it turns
out that board support code still had references to it.
As the core now handles both dual role and host-only modes, we can just
pass MUSB_OTG as mode from board files.
Signed-off-by: Daniel Mack <zonque@gmail.com>
Tested-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Olof Johansson <olof@lixom.net>
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Goodbye TI. Welcome new life!
Signed-off-by: Benoit Cousson <bcousson@baylibre.com>
Cc: Javier Martinez Canillas <javier.martinez@collabora.co.uk>
[tony@atomide.com: updated subject for the name]
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Olof Johansson <olof@lixom.net>
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Pull networking fixes from David Miller:
1) Fix SKB leak in 8139cp, from Dave Jones.
2) Fix use of *_PAGES interfaces with mlx5 firmware, from Moshe Lazar.
3) RCU conversion of macvtap introduced two races, fixes by Eric
Dumazet
4) Synchronize statistic flows in bnx2x driver to prevent corruption,
from Dmitry Kravkov
5) Undo optimization in IP tunneling, we were using the inner IP header
in some cases to inherit the IP ID, but that isn't correct in some
circumstances. From Pravin B Shelar
6) Use correct struct size when parsing netlink attributes in
rtnl_bridge_getlink(). From Asbjoern Sloth Toennesen
7) Length verifications in tun_get_user() are bogus, from Weiping Pan
and Dan Carpenter
8) Fix bad merge resolution during 3.11 networking development in
openvswitch, albeit a harmless one which added some unreachable
code. From Jesse Gross
9) Wrong size used in flexible array allocation in openvswitch, from
Pravin B Shelar
10) Clear out firmware capability flags the be2net driver isn't ready to
handle yet, from Sarveshwar Bandi
11) Revert DMA mapping error checking addition to cxgb3 driver, it's
buggy. From Alexey Kardashevskiy
12) Fix regression in packet scheduler rate limiting when working with a
link layer of ATM. From Jesper Dangaard Brouer
13) Fix several errors in TCP Cubic congestion control, in particular
overflow errors in timestamp calculations. From Eric Dumazet and
Van Jacobson
14) In ipv6 routing lookups, we need to backtrack if subtree traversal
don't result in a match. From Hannes Frederic Sowa
15) ipgre_header() returns incorrect packet offset. Fix from Timo Teräs
16) Get "low latency" out of the new MIB counter names. From Eliezer
Tamir
17) State check in ndo_dflt_fdb_del() is inverted, from Sridhar
Samudrala
18) Handle TCP Fast Open properly in netfilter conntrack, from Yuchung
Cheng
19) Wrong memcpy length in pcan_usb driver, from Stephane Grosjean
20) Fix dealock in TIPC, from Wang Weidong and Ding Tianhong
21) call_rcu() call to destroy SCTP transport is done too early and
might result in an oops. From Daniel Borkmann
22) Fix races in genetlink family dumps, from Johannes Berg
23) Flags passed into macvlan by the user need to be validated properly,
from Michael S Tsirkin
24) Fix skge build on 32-bit, from Stephen Hemminger
25) Handle malformed TCP headers properly in xt_TCPMSS, from Pablo Neira
Ayuso
26) Fix handling of stacked vlans in vlan_dev_real_dev(), from Nikolay
Aleksandrov
27) Eliminate MTU calculation overflows in esp{4,6}, from Daniel
Borkmann
28) neigh_parms need to be setup before calling the ->ndo_neigh_setup()
method. From Veaceslav Falico
29) Kill out-of-bounds prefetch in fib_trie, from Eric Dumazet
30) Don't dereference MLD query message if the length isn't value in the
bridge multicast code, from Linus Lüssing
31) Fix VXLAN IGMP join regression due to an inverted check, from Cong
Wang
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (70 commits)
net/mlx5_core: Support MANAGE_PAGES and QUERY_PAGES firmware command changes
tun: signedness bug in tun_get_user()
qlcnic: Fix diagnostic interrupt test for 83xx adapters
qlcnic: Fix beacon state return status handling
qlcnic: Fix set driver version command
net: tg3: fix NULL pointer dereference in tg3_io_error_detected and tg3_io_slot_reset
net_sched: restore "linklayer atm" handling
drivers/net/ethernet/via/via-velocity.c: update napi implementation
Revert "cxgb3: Check and handle the dma mapping errors"
be2net: Clear any capability flags that driver is not interested in.
openvswitch: Reset tunnel key between input and output.
openvswitch: Use correct type while allocating flex array.
openvswitch: Fix bad merge resolution.
tun: compare with 0 instead of total_len
rtnetlink: rtnl_bridge_getlink: Call nlmsg_find_attr() with ifinfomsg header
ethernet/arc/arc_emac - fix NAPI "work > weight" warning
ip_tunnel: Do not use inner ip-header-id for tunnel ip-header-id.
bnx2x: prevent crash in shutdown flow with CNIC
bnx2x: fix PTE write access error
bnx2x: fix memory leak in VF
...
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We should not be calling calc_timer_values() for events that do not actually
have an mmap()'ed userpage.
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/20130802191630.GT27162@twins.programming.kicks-ass.net
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Freq events may not always be affine to a particular CPU. As such,
account_event_cpu() may crash if we account per cpu a freq event
that has event->cpu == -1.
To solve this, lets account freq events globally. In practice
this doesn't change much the picture because perf tools create
per-task perf events with one event per CPU by default. Profiling a
single CPU is usually a corner case so there is no much point in
optimizing things that way.
Reported-by: Jiri Olsa <jolsa@redhat.com>
Suggested-by: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Tested-by: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Stephane Eranian <eranian@google.com>
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1375460996-16329-3-git-send-email-fweisbec@gmail.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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When we fail to allocate the callchain buffers, we roll back the refcount
we did and return from get_callchain_buffers().
However we take the refcount and allocate under the callchain lock
but the rollback is done outside the lock.
As a result, while we roll back, some concurrent callchain user may
call get_callchain_buffers(), see the non-zero refcount and give up
because the buffers are NULL without itself retrying the allocation.
The consequences aren't that bad but that behaviour looks weird enough and
it's better to give their chances to the following callchain users where
we failed.
Reported-by: Jiri Olsa <jolsa@redhat.com>
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Acked-by: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Stephane Eranian <eranian@google.com>
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1375460996-16329-2-git-send-email-fweisbec@gmail.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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This patch adds support for the SNB-EP PCU uncore PMU extra_sel_bit
(bit 21) which is missing from the documentation in Table-2.75 of
Intel Xeon Processor E5-2600 Product Family Uncore Performance
Monitoring Guide. It is referred to later in Table-2.81. Without
this selection bit explicitly enabled by the kernel, some events
such as COREx_TRANSITION_CYCLES do not count correctly.
Signed-off-by: Yan, Zheng <zheng.z.yan@intel.com>
Reviewed-by: Stephane Eranian <eranian@google.com>
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1376375382-21350-4-git-send-email-zheng.z.yan@intel.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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The QPI uncore boxes have two pairs of MATCH/MASK registers that
user to filter packet traffic serviced by QPI link layer. These
registers are in auxiliary PCI devices.
This patch adds the auxiliary PCI devices to snbep_uncore_pci_ids
and adds field definitions for the MATCH/MASK registers.
Signed-off-by: Yan, Zheng <zheng.z.yan@intel.com>
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1375856245-10717-2-git-send-email-zheng.z.yan@intel.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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The QPI uncore boxes have two pairs of MATCH/MASK registers that
user to filter packet traffic serviced by QPI link layer. These
registers are in auxiliary PCI devices.
This patch changes the meaning of (struct pci_device_id)->driver_data.
The first 8 bits are device index of the same uncore type, the second
8 bytes are uncore type index. Auxiliary PCI device's type is defined
as UNCORE_EXTRA_PCI_DEV(0xff)
Signed-off-by: Yan, Zheng <zheng.z.yan@intel.com>
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1375856245-10717-1-git-send-email-zheng.z.yan@intel.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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tick_nohz_full_kick_all() is useful to notify all full dynticks
CPUs that there is a system state change to checkout before
re-evaluating the need for the tick.
Unfortunately this is implemented using smp_call_function_many()
that ignores the local CPU. This CPU also needs to re-evaluate
the tick.
on_each_cpu_mask() is not useful either because we don't want to
re-evaluate the tick state in place but asynchronously from an IPI
to avoid messing up with any random locking scenario.
So lets call tick_nohz_full_kick() from tick_nohz_full_kick_all()
so that the usual irq work takes care of it.
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Li Zhong <zhong@linux.vnet.ibm.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Kevin Hilman <khilman@linaro.org>
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1375460996-16329-4-git-send-email-fweisbec@gmail.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Ben Tebulin reported:
"Since v3.7.2 on two independent machines a very specific Git
repository fails in 9/10 cases on git-fsck due to an SHA1/memory
failures. This only occurs on a very specific repository and can be
reproduced stably on two independent laptops. Git mailing list ran
out of ideas and for me this looks like some very exotic kernel issue"
and bisected the failure to the backport of commit 53a59fc67f97 ("mm:
limit mmu_gather batching to fix soft lockups on !CONFIG_PREEMPT").
That commit itself is not actually buggy, but what it does is to make it
much more likely to hit the partial TLB invalidation case, since it
introduces a new case in tlb_next_batch() that previously only ever
happened when running out of memory.
The real bug is that the TLB gather virtual memory range setup is subtly
buggered. It was introduced in commit 597e1c3580b7 ("mm/mmu_gather:
enable tlb flush range in generic mmu_gather"), and the range handling
was already fixed at least once in commit e6c495a96ce0 ("mm: fix the TLB
range flushed when __tlb_remove_page() runs out of slots"), but that fix
was not complete.
The problem with the TLB gather virtual address range is that it isn't
set up by the initial tlb_gather_mmu() initialization (which didn't get
the TLB range information), but it is set up ad-hoc later by the
functions that actually flush the TLB. And so any such case that forgot
to update the TLB range entries would potentially miss TLB invalidates.
Rather than try to figure out exactly which particular ad-hoc range
setup was missing (I personally suspect it's the hugetlb case in
zap_huge_pmd(), which didn't have the same logic as zap_pte_range()
did), this patch just gets rid of the problem at the source: make the
TLB range information available to tlb_gather_mmu(), and initialize it
when initializing all the other tlb gather fields.
This makes the patch larger, but conceptually much simpler. And the end
result is much more understandable; even if you want to play games with
partial ranges when invalidating the TLB contents in chunks, now the
range information is always there, and anybody who doesn't want to
bother with it won't introduce subtle bugs.
Ben verified that this fixes his problem.
Reported-bisected-and-tested-by: Ben Tebulin <tebulin@googlemail.com>
Build-testing-by: Stephen Rothwell <sfr@canb.auug.org.au>
Build-testing-by: Richard Weinberger <richard.weinberger@gmail.com>
Reviewed-by: Michal Hocko <mhocko@suse.cz>
Acked-by: Peter Zijlstra <peterz@infradead.org>
Cc: stable@vger.kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Use of a this_cpu() operation reduces the number of instructions used
for accounting (account_user_time()) and frees up some registers. This is in
the scheduler tick hotpath.
Signed-off-by: Christoph Lameter <cl@linux.com>
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/00000140596dd165-338ff7f5-893b-4fec-b251-aaac5557239e-000000@email.amazonses.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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If doms_new is NULL, partition_sched_domains() will reset ndoms_cur
to 0, and free old sched domains with free_sched_domains(doms_cur, ndoms_cur).
As ndoms_cur is 0, the cpumask will not be freed.
Signed-off-by: Xiaotian Feng <xtfeng@gmail.com>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1375790802-11857-1-git-send-email-xtfeng@gmail.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge Linux 3.11-rc5, to pick up the latest fixes.
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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It seems that the root css doesn't have refcnt allocated(not needed?),
and would cause the booting error attached.
This patch tries to use css_get() to not increase the refcnt if parent
is root.
BUG: unable to handle kernel NULL pointer dereference at (null)
IP: [<ffffffff810b37cc>] cgroup_mkdir+0x37c/0x740
PGD 0
Oops: 0002 [#1]
Modules linked in:
CPU: 0 PID: 1 Comm: systemd Not tainted 3.11.0-rc5-next-20130815+ #1
Hardware name: Bochs Bochs, BIOS Bochs 01/01/2007
task: ffff88007f868000 ti: ffff88007f864000 task.ti: ffff88007f864000
RIP: 0010:[<ffffffff810b37cc>] [<ffffffff810b37cc>] cgroup_mkdir+0x37c/0x740
RSP: 0018:ffff88007f865df8 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffffffff81a46ee0 RCX: 0000000000000001
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff81a415c0
RBP: ffff88007f865ec8 R08: 0000000000000001 R09: 0000000000000000
R10: ffff88007ce6d060 R11: 0000000000000000 R12: ffff88007ce6d000
R13: ffff88007ce6d060 R14: ffffffff81a46d80 R15: ffff88007c6e8018
FS: 00007f13dbf6f840(0000) GS:ffffffff81a23000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 000000007b7e5000 CR4: 00000000000006b0
Stack:
ffffffff810b380d 0000000000000002 ffff88007f865e18 ffffffff81167069
ffff88007f865ed8 ffffffff8116a3f5 ffff880037454400 ffff88007c6e8018
ffff88007c6e8028 ffff88007c6e8328 ffff88007c6e8000 ffff88007ce6d000
Call Trace:
[<ffffffff810b380d>] ? cgroup_mkdir+0x3bd/0x740
[<ffffffff81167069>] ? lookup_hash+0x19/0x20
[<ffffffff8116a3f5>] ? kern_path_create+0x95/0x170
[<ffffffff8116ce3e>] vfs_mkdir+0x9e/0xf0
[<ffffffff8116d7a0>] SyS_mkdirat+0x60/0xe0
[<ffffffff8116d839>] SyS_mkdir+0x19/0x20
[<ffffffff814c960d>] tracesys+0xcf/0xd4
Code: ad 70 ff ff ff 48 89 9d 60 ff ff ff 4d 89 d5 4c 8b bd 68 ff ff ff 4c 8b 65 88 eb 50 0f 1f 00 48 8b 43 18 a8 03 0f 85 6c 03 00 00 <ff> 00 e8 1d 0a fb ff 85 c0 74 0d 80 3d f0 45 a1 00 00 0f 84 4c
RIP [<ffffffff810b37cc>] cgroup_mkdir+0x37c/0x740
RSP <ffff88007f865df8>
CR2: 0000000000000000
---[ end trace a4b14b49bc46fd60 ]---
Signed-off-by: Li Zhong <zhong@linux.vnet.ibm.com>
Acked-by: Li Zefan <lizefan@huawei.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
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This just cleans up the table, no functional changes.
Signed-off-by: David Henningsson <david.henningsson@canonical.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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The internal mic boost is so noisy on boosts 2 and 3 so they are
unusable in practice.
BugLink: https://bugs.launchpad.net/bugs/1213055
Signed-off-by: David Henningsson <david.henningsson@canonical.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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