Граф коммитов

480318 Коммитов

Автор SHA1 Сообщение Дата
Arnaldo Carvalho de Melo 597e48c138 perf evsel: Move exit stuff from __delete to __exit
So that when an evsel is embedded into other struct it can free up
resources calling perf_evsel__exit().

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Borislav Petkov <bp@suse.de>
Cc: David Ahern <dsahern@gmail.com>
Cc: Don Zickus <dzickus@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jean Pihet <jean.pihet@linaro.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-n1w68pfe9m2vkhm4sqs8y1en@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2014-10-17 11:14:15 -03:00
Dave Jiang ab760a0c56 ntb: Adding split BAR support for Haswell platforms
On the Haswell platform, a split BAR option to allow creation of 2
32bit BARs (4 and 5) from the 64bit BAR 4. Adding support for this
new option.

Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Signed-off-by: Jon Mason <jdmason@kudzu.us>
2014-10-17 07:08:51 -04:00
Dave Jiang 069684e888 ntb: use errata flag set via DID to implement workaround
Instead of using a module parameter, we should detect the errata via
PCI DID and then set an appropriate flag. This will be used for additional
errata later on.

Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Signed-off-by: Jon Mason <jdmason@kudzu.us>
2014-10-17 07:08:51 -04:00
Dave Jiang 1db97f2589 ntb: conslidate reading of PPD to move platform detection earlier
To simplify some of the platform detection code. Move the platform detection
to a function to be called earlier.

Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Signed-off-by: Jon Mason <jdmason@kudzu.us>
2014-10-17 07:08:50 -04:00
Dave Jiang b775e85bdb ntb: move platform detection to separate function
Move the platform detection function to separate functions to allow
easier maintenence.

Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Signed-off-by: Jon Mason <jdmason@kudzu.us>
2014-10-17 07:08:50 -04:00
Jon Mason 6465d02ee1 NTB: debugfs device entry
Create a debugfs entry for the NTB device to log the basic device info,
as well as display the error count on a number of registers.

Signed-off-by: Jon Mason <jon.mason@intel.com>
2014-10-17 07:08:50 -04:00
Chris Mason d37973082b Revert "Btrfs: race free update of commit root for ro snapshots"
This reverts commit 9c3b306e1c.

Switching only one commit root during a transaction is wrong because it
leads the fs into an inconsistent state. All commit roots should be
switched at once, at transaction commit time, otherwise backref walking
can often miss important references that were only accessible through
the old commit root.  Plus, the root item for the snapshot's root wasn't
getting updated and preventing the next transaction commit to do it.

This made several users get into random corruption issues after creation
of readonly snapshots.

A regression test for xfstests will follow soon.

Cc: stable@vger.kernel.org # 3.17
Signed-off-by: Filipe Manana <fdmanana@suse.com>
Signed-off-by: Chris Mason <clm@fb.com>
2014-10-17 02:40:59 -07:00
Anton Blanchard 691286b556 kprobes/x86: Remove stale ARCH_SUPPORTS_KPROBES_ON_FTRACE define
Commit e7dbfe349d ("kprobes/x86: Move ftrace-based kprobe code
into kprobes-ftrace.c") switched from using
ARCH_SUPPORTS_KPROBES_ON_FTRACE to CONFIG_KPROBES_ON_FTRACE but
missed removing the define.

Signed-off-by: Anton Blanchard <anton@samba.org>
Cc: masami.hiramatsu.pt@hitachi.com
Cc: ananth@in.ibm.com
Cc: a.p.zijlstra@chello.nl
Cc: fweisbec@gmail.com
Cc: rostedt@goodmis.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2014-10-17 07:18:34 +02:00
Tommi Rantala 4dfb15cd5a Input: xpad - add Thrustmaster as Xbox 360 controller vendor
Add Thrustmaster as Xbox 360 controller vendor. This is required for
example to make the GP XID (044f:b326) gamepad work.

Signed-off-by: Tommi Rantala <tt.rantala@gmail.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2014-10-16 14:05:40 -07:00
Tommi Rantala 4b54625822 Input: xpad - add USB ID for Thrustmaster Ferrari 458 Racing Wheel
Add the USB ID for the Xbox 360 Thrustmaster Ferrari 458 Racing Wheel.

Signed-off-by: Tommi Rantala <tt.rantala@gmail.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2014-10-16 14:05:40 -07:00
Jaewon Kim 135d916fe8 Input: max77693-haptic - fix state check in imax77693_haptic_disable()
The check to see whether the device is already disabled in
max77693_haptic_disable() was inversed, this change corrects it.

Signed-off-by: Jaewon Kim <jaewon02.kim@samsung.com>
Reviewed-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2014-10-16 14:05:39 -07:00
Chang Huaixin 4d544e3bdb Input: xen-kbdfront - free grant table entry in xenkbd_disconnect_backend
xenkbd_disconnect_backend doesn't free grant table entry.  This bug affects
live migration.

xenkbd_disconnect_backend uses gnttab_end_foreign_access_ref to handle
grant table entry which doesn't really free an entry.

Thus every time we do xenkbd_resume, grant table entry increses by one. As
an grant table entry occupies 8 bytes, an grant table page has at most 512
entries. Every 512 times we do xenkdb_resume, grant table pages increses by
one.

After around 3500 times of live migration, grant table pages will increase
by 7, causing too many pages to populate and hitting max_pages limit when
assigning pages.Thus assign_pages will fail, so will live migration.

Signed-off-by: Chang Huaixin <huaixin.chx@alibaba-inc.com>
Acked-by: David Vrabel <david.vrabel@citrix.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2014-10-16 13:37:57 -07:00
Steve French 9ffc541296 Check minimum response length on query_network_interface
Acked-by: Shirish Pargaonkar <shirishpargaonkar@gmail.com>
Signed-off-by: Steve French <smfrench@gmail.com>
2014-10-16 15:20:20 -05:00
Steve French b5b374eab1 Workaround Mac server problem
Mac server returns that they support CIFS Unix Extensions but
doesn't actually support QUERY_FILE_UNIX_BASIC so mount fails.

Workaround this problem by disabling use of Unix CIFS protocol
extensions if server returns an EOPNOTSUPP error on
QUERY_FILE_UNIX_BASIC during mount.

Signed-off-by: Steve French <smfrench@gmail.com>
2014-10-16 15:20:20 -05:00
Steve French 2baa268253 Remap reserved posix characters by default (part 3/3)
This is a bigger patch, but its size is mostly due to
a single change for how we check for remapping illegal characters
in file names - a lot of repeated, small changes to
the way callers request converting file names.

The final patch in the series does the following:

1) changes default behavior for cifs to be more intuitive.
Currently we do not map by default to seven reserved characters,
ie those valid in POSIX but not in NTFS/CIFS/SMB3/Windows,
unless a mount option (mapchars) is specified.  Change this
to by default always map and map using the SFM maping
(like the Mac uses) unless the server negotiates the CIFS Unix
Extensions (like Samba does when mounting with the cifs protocol)
when the remapping of the characters is unnecessary.  This should
help SMB3 mounts in particular since Samba will likely be
able to implement this mapping with its new "vfs_fruit" module
as it will be doing for the Mac.
2) if the user specifies the existing "mapchars" mount option then
use the "SFU" (Microsoft Services for Unix, SUA) style mapping of
the seven characters instead.
3) if the user specifies "nomapposix" then disable SFM/MAC style mapping
(so no character remapping would be used unless the user specifies
"mapchars" on mount as well, as above).
4) change all the places in the code that check for the superblock
flag on the mount which is set by mapchars and passed in on all
path based operation and change it to use a small function call
instead to set the mapping type properly (and check for the
mapping type in the cifs unicode functions)

Signed-off-by: Steve French <smfrench@gmail.com>
2014-10-16 15:20:20 -05:00
Steve French a4153cb1d3 Allow conversion of characters in Mac remap range (part 2)
The previous patch allowed remapping reserved characters from directory
listenings, this patch adds conversion the other direction, allowing
opening of files with any of the seven reserved characters.

Signed-off-by: Steve French <smfrench@gmail.com>
Reviewed-by: Shirish Pargaonkar <shirishpargaonkar@gmail.com>
2014-10-16 15:20:20 -05:00
Steve French b693855fe6 Allow conversion of characters in Mac remap range. Part 1
This allows directory listings to Mac to display filenames
correctly which have been created with illegal (to Windows)
characters in their filename. It does not allow
converting the other direction yet ie opening files with
these characters (followon patch).

There are seven reserved characters that need to be remapped when
mounting to Windows, Mac (or any server without Unix Extensions) which
are valid in POSIX but not in the other OS.

: \ < > ? * |

We used the normal UCS-2 remap range for this in order to convert this
to/from UTF8 as did Windows Services for Unix (basically add 0xF000 to
any of the 7 reserved characters), at least when the "mapchars" mount
option was specified.

Mac used a very slightly different "Services for Mac" remap range
0xF021 through 0xF027.  The attached patch allows cifs.ko (the kernel
client) to read directories on macs containing files with these
characters and display their names properly.  In theory this even
might be useful on mounts to Samba when the vfs_catia or new
"vfs_fruit" module is loaded.

Currently the 7 reserved characters look very strange in directory
listings from cifs.ko to Mac server.  This patch allows these file
name characters to be read (requires specifying mapchars on mount).

Two additional changes are needed:
1) Make it more automatic: a way of detecting enough info so that
we know to try to always remap these characters or not. Various
have suggested that the SFM approach be made the default when
the server does not support POSIX Unix extensions (cifs mounts
to Samba for example) so need to make SFM remapping the default
unless mapchars (SFU style mapping) specified on mount or no
mapping explicitly requested or no mapping needed (cifs mounts to Samba).

2) Adding a patch to map the characters the other direction
(ie UTF-8 to UCS-2 on open).  This patch does it for translating
readdir entries (ie UCS-2 to UTF-8)

Signed-off-by: Steve French <smfrench@gmail.com>
Reviewed-by: Shirish Pargaonkar <shirishpargaonkar@gmail.com>
2014-10-16 15:20:20 -05:00
Steve French c22870ea2d mfsymlinks support for SMB2.1/SMB3. Part 2 query symlink
Adds support on SMB2.1 and SMB3 mounts for emulation of symlinks
via the "Minshall/French" symlink format already used for cifs
mounts when mfsymlinks mount option is used (and also used by Apple).
  http://wiki.samba.org/index.php/UNIX_Extensions#Minshall.2BFrench_symlinks
This second patch adds support to query them (recognize them as symlinks
and read them).  Third version of patch makes minor corrections
to error handling.

Signed-off-by: Steve French <smfrench@gmail.com>
Reviewed-by: Stefan Metzmacher <metze@samba.org>
2014-10-16 15:20:20 -05:00
Steve French 5ab97578cb Add mfsymlinks support for SMB2.1/SMB3. Part 1 create symlink
Adds support on SMB2.1 and SMB3 mounts for emulation of symlinks
via the "Minshall/French" symlink format already used for cifs
mounts when mfsymlinks mount option is used (and also used by Apple).
http://wiki.samba.org/index.php/UNIX_Extensions#Minshall.2BFrench_symlinks
This first patch adds support to create them.  The next patch will
add support for recognizing them and reading them.  Although CIFS/SMB3
have other types of symlinks, in the many use cases they aren't
practical (e.g. either require cifs only mounts with unix extensions
to Samba, or require the user to be Administrator to Windows for SMB3).
This also helps enable running additional xfstests over SMB3 (since some
xfstests directly or indirectly require symlink support).

Signed-off-by: Steve French <smfrench@gmail.com>
CC: Stefan Metzmacher <metze@samba.org>
2014-10-16 15:20:20 -05:00
Steve French db8b631d4b Allow mknod and mkfifo on SMB2/SMB3 mounts
The "sfu" mount option did not work on SMB2/SMB3 mounts.
With these changes when the "sfu" mount option is passed in
on an smb2/smb2.1/smb3 mount the client can emulate (and
recognize) fifo and device (character and device files).

In addition the "sfu" mount option should not conflict
with "mfsymlinks" (symlink emulation) as we will never
create "sfu" style symlinks, but using "sfu" mount option
will allow us to recognize existing symlinks, created with
Microsoft "Services for Unix" (SFU and SUA).

To enable the "sfu" mount option for SMB2/SMB3 the calling
syntax of the generic cifs/smb2/smb3 sync_read and sync_write
protocol dependent function needed to be changed (we
don't have a file struct in all cases), but this actually
ended up simplifying the code a little.

Signed-off-by: Steve French <smfrench@gmail.com>
2014-10-16 15:20:19 -05:00
Steve French 7332297909 add defines for two new file attributes
Signed-off-by: Steve French <smfrench@gmail.com>
Reviewed-by: Shirish Pargaonkar <shirishpargaonkar@gmail.com>
2014-10-16 15:20:19 -05:00
Nicolas Dichtel 2c6ba4b15b netlink: fix description of portid
Avoid confusion between pid and portid.

Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-10-16 14:52:35 -04:00
David S. Miller 3331177cbd Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/jkirsher/net
Jeff Kirsher says:

====================
Intel Wired LAN Driver Updates 2014-10-16

This series contains updates to fm10k and ixgbe.

Matthew provides two fixes for fm10k, first sets the flag to fetch the
host state before kicking off the service task that reads the host
state when bringing the interface up.  The second makes sure that we
release the mailbox lock after detecting an error and before we return
the error code.

Andy Zhou provides a compile fix for fm10k, when the driver is compiled
into the kernel and the VXLAN driver is compiled as a module.

Emil provides a fix for ixgbe to prevent against a panic by trying
to dereference a NULL pointer in ixgbe_ndo_set_vf_spoofchk().
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2014-10-16 14:42:51 -04:00
Anton Altaparmakov 3569b70c40 NTFS: Bump version to 2.1.31.
Signed-off-by: Anton Altaparmakov <anton@tuxera.com>
2014-10-16 12:53:35 +01:00
Anton Altaparmakov 3f7fc6f2a2 NTFS: Add bmap address space operation needed for FIBMAP ioctl.
Signed-off-by: Anton Altaparmakov <anton@tuxera.com>
2014-10-16 12:50:52 +01:00
Anton Altaparmakov 2b522cc160 NTFS: Remove changelog from Documentation/filesystems/ntfs.txt.
Changelog is in git history, no need to have a copy in the documentation.

Signed-off-by: Anton Altaparmakov <anton@tuxera.com>
2014-10-16 12:43:57 +01:00
Anton Altaparmakov ce1bafa094 NTFS: Split ntfs_aops into ntfs_normal_aops and ntfs_compressed_aops
in preparation for them diverging.

Signed-off-by: Anton Altaparmakov <anton@tuxera.com>
2014-10-16 12:28:03 +01:00
James Morris 9b32011acd Merge branch 'stable-3.18' of git://git.infradead.org/users/pcmoore/selinux into for-linus2 2014-10-16 21:04:18 +11:00
Emil Tantilov 600a507ddc ixgbe: check for vfs outside of sriov_num_vfs before dereference
The check for vfinfo is not sufficient because it does not protect
against specifying vf that is outside of sriov_num_vfs range.
All of the ndo functions have a check for it except for
ixgbevf_ndo_set_spoofcheck().

The following patch is all we need to protect against this panic:

ip link set p96p1 vf 0 spoofchk off
BUG: unable to handle kernel NULL pointer dereference at 0000000000000052
IP: [<ffffffffa044a1c1>]
ixgbe_ndo_set_vf_spoofchk+0x51/0x150 [ixgbe]

Reported-by: Thierry Herbelot <thierry.herbelot@6wind.com>
Signed-off-by: Emil Tantilov <emil.s.tantilov@intel.com>
Acked-by: Thierry Herbelot <thierry.herbelot@6wind.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2014-10-16 02:21:03 -07:00
Andy Zhou f6b03c10a1 fm10k: Add CONFIG_FM10K_VXLAN configuration option
Compiling with CONFIG_FM10K=y and VXLAN=m resulting in linking error:

   drivers/built-in.o: In function `fm10k_open':
   (.text+0x1f9d7a): undefined reference to `vxlan_get_rx_port'
   make: *** [vmlinux] Error 1

The fix follows the same strategy as I40E.

Signed-off-by: Andy Zhou <azhou@nicira.com>
Acked-by: Alexander Duyck <alexander.h.duyck@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2014-10-16 02:03:39 -07:00
Christoffer Dall 2df36a5dd6 arm/arm64: KVM: Fix BE accesses to GICv2 EISR and ELRSR regs
The EIRSR and ELRSR registers are 32-bit registers on GICv2, and we
store these as an array of two such registers on the vgic vcpu struct.
However, we access them as a single 64-bit value or as a bitmap pointer
in the generic vgic code, which breaks BE support.

Instead, store them as u64 values on the vgic structure and do the
word-swapping in the assembly code, which already handles the byte order
for BE systems.

Tested-by: Victor Kamensky <victor.kamensky@linaro.org>
Acked-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
2014-10-16 10:57:41 +02:00
Matthew Vick 13cb2dad45 fm10k: Unlock mailbox on VLAN addition failures
After grabbing the mailbox lock and detecting an error, the lock must be
released before the error code can be returned.

Signed-off-by: Matthew Vick <matthew.vick@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2014-10-16 01:55:31 -07:00
Vinod Koul 6b997bab20 serial: atmel: add missing dmaengine header
The atmel serial driver uses dmaengine APIs but never included the dmaengine
header as it was getting inculded thru one of driver headers.

commit 3d588f83e4 - "dmaengine: dw: split
dma-dw.h to platform and private parts" broke this as it moved headers
around.  Fix this by doing the right thing to include the dmaengine header

Reported-by: kbuild test robot <fengguang.wu@intel.com>
Fixes: 08f738be88 (serial: at91: add tx dma support)
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2014-10-16 14:08:05 +05:30
Matthew Vick 4d4191566f fm10k: Check the host state when bringing the interface up
Set the flag to fetch the host state before kicking off the service task
that reads the host state when bringing the interface back up.

Signed-off-by: Matthew Vick <matthew.vick@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2014-10-16 01:37:33 -07:00
james.d.ralston@intel.com 3e27a8445c i2c: i801: Add Device IDs for Intel Sunrise Point PCH
This patch adds the I2C/SMBus Device IDs for the Intel Sunrise Point PCH.

Signed-off-by: James Ralston <james.d.ralston@intel.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2014-10-16 09:16:22 +02:00
Wei Yan 15ef27756b i2c: hix5hd2: add i2c controller driver
I2C drivers for hix5hd2 soc series, including following chipset
Hi3716CV200, Hi3719CV100, Hi3718CV100, Hi3719MV100, Hi3718MV100.

Signed-off-by: Wei Yan <sledge.yanwei@huawei.com>
Signed-off-by: Zhangfei Gao <zhangfei.gao@linaro.org>
[wsa: folded dt docs into this patch]
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2014-10-16 09:14:17 +02:00
Ingo Molnar 71c62b24fe perf/core improvements and fixes:
User visible:
 
 * Add a visual cue for toggle zeroing of samples in 'perf top' (Taeung Song)
 
 * Fix for double free in 'perf stat' when using some specific invalid
   command line combo (Yasser Shalabi)
 
 Infrastructure:
 
 * Add option to copy events when queuing for sorting across cpu buffers
   and enable it for 'perf kvm stat live', to avoid having events left
   in the queue pointing to the ring buffer be rewritten in high volume
   sessions.  (Alexander Yarygin, improving work done by David Ahern):
 
 * Document sysfs events/ interfaces (Cody P Schafer)
 
 * Add support to new style format of kernel PMU event. (Kan Liang)
 
 * Fix typos in perf/Documentation (Masanari Iida)
 
 * Improve callchains when using libunwind (Namhyung Kim)
 
 Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
   Lines starting with '#' will be ignored.
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1
 
 iQIcBAABAgAGBQJUPt5RAAoJENZQFvNTUqpAY7IP/j7lEiD1z5LIEhVkWwvCTKax
 twQNrm0koLq9BpIGc7wr2A5XNX697Iz29LORvY66jwsEVxxyu0TCInSDYU152Vr1
 NPEIGxPT/3Z62ywDVpasr1RLJheSmQJUOFxwsaWMrV4iC9c6qCNsEXx/0zLz3r8Q
 QupWK6lIoFFzgCxjg472RAmP8PKatwhAGLhVcZSvW1cRE5+/inhL1w0DeMRldPUy
 QPng9eZ4UwiMBHc4rSVBZ9ZAnLaWXwpiE5nJctmY2qW0GtM5pPDHn5kOAj0bMEyk
 Hr22uB0wcDFOsw19L6fxihlxtiAFlKU9xrUEG5QXSnx223VfllG3iQIqU4gIOq2i
 371FwlanSbtysUArXldv8v6d/pqjbLPuI9dwV1XvfWyFPyXQCHYTNT3HBRO9Rh+i
 LZgQlOIQJQMiB/ziezGg3WNqFWOxwcWre3IUV4kQX8d4ut9GbygSkNNiS1F/y1o8
 UKOkfgd+yPTsG2APK6Q93UpA9IegX5ud6MIdx+MfE8YtLL9BdSB6QDo5Ehn9Ygz6
 JKnXCB9vkKRKmvLEXyZ2TmieCbRuSCHlXjPr4+EeiFSoelLifxbaFuyN7cd3xQBp
 OXk33wkaA9oKMIQ+YuTswX5q+P/wWaGdvWptw9U1auCjDNbdKnfm3/hmuB+zMO8o
 lNsnhJJoh1OZolobcnkY
 =+bVc
 -----END PGP SIGNATURE-----

Merge tag 'perf-core-for-mingo' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/urgent

Pull perf/core improvements and fixes from Arnaldo Carvalho de Melo:

 User visible changes:

  * Add a visual cue for toggle zeroing of samples in 'perf top' (Taeung Song)

  * Fix for double free in 'perf stat' when using some specific invalid
    command line combo (Yasser Shalabi)

 Infrastructure changes:

  * Add option to copy events when queuing for sorting across cpu buffers
    and enable it for 'perf kvm stat live', to avoid having events left
    in the queue pointing to the ring buffer be rewritten in high volume
    sessions.  (Alexander Yarygin, improving work done by David Ahern):

  * Document sysfs events/ interfaces (Cody P Schafer)

  * Add support to new style format of kernel PMU event. (Kan Liang)

  * Fix typos in perf/Documentation (Masanari Iida)

  * Improve callchains when using libunwind (Namhyung Kim)

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2014-10-16 07:15:45 +02:00
Li RongQing 91269e390d vxlan: using pskb_may_pull as early as possible
pskb_may_pull should be used to check if skb->data has enough space,
skb->len can not ensure that.

Cc: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: Li RongQing <roy.qing.li@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-10-15 23:33:23 -04:00
Li RongQing ce6502a8f9 vxlan: fix a use after free in vxlan_encap_bypass
when netif_rx() is done, the netif_rx handled skb maybe be freed,
and should not be used.

Signed-off-by: Li RongQing <roy.qing.li@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-10-15 23:30:28 -04:00
Fabian Frederick 4e8febd0a7 openvswitch: use vport instead of p
All functions used struct vport *vport except
ovs_vport_find_upcall_portid.

This fixes 1 kerneldoc warning

Signed-off-by: Fabian Frederick <fabf@skynet.be>
Acked-by: Pravin B Shelar <pshelar@nicira.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-10-15 23:25:33 -04:00
Fabian Frederick 7e78cc46b7 openvswitch: kerneldoc warning fix
s/sock/gs

Signed-off-by: Fabian Frederick <fabf@skynet.be>
Acked-by: Pravin B Shelar <pshelar@nicira.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-10-15 23:25:33 -04:00
Michael Ellerman aeba3731b1 powerpc/pci: Fix IO space breakage after of_pci_range_to_resource() change
Commit 0b0b0893d4 "of/pci: Fix the conversion of IO ranges into IO
resources" changed the behaviour of of_pci_range_to_resource().

Previously it simply populated the resource based on the arguments. Now
it calls pci_register_io_range() and pci_address_to_pio(). These both
have two implementations depending on whether PCI_IOBASE is defined,
which it is not for powerpc.

Further complicating matters, both routines are weak, and powerpc
implements it's own version of one - pci_address_to_pio(). However
powerpc's implementation depends on other initialisations which are done
later in boot.

The end result is incorrectly initialised IO space. Often we can get
away with that, because we don't make much use of IO space. However
virtio requires it, so we see eg:

  pci_bus 0000:00: root bus resource [io  0xffff] (bus address [0xffffffffffffffff-0xffffffffffffffff])
  PCI: Cannot allocate resource region 0 of device 0000:00:01.0, will remap
  virtio-pci 0000:00:01.0: can't enable device: BAR 0 [io  size 0x0020] not assigned

The simplest fix for now is to just stop using of_pci_range_to_resource(),
and open-code the original implementation, that's all we want it to do.

Fixes: 0b0b0893d4 ("of/pci: Fix the conversion of IO ranges into IO resources")
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2014-10-16 14:19:07 +11:00
Claudiu Manoil f5b720b859 gianfar: Add FCS to rx buffer size (fix)
For each Rx frame the eTSEC writes its FCS (Frame Check Sequence)
to the Rx buffer.

The eTSEC h/w manual states in the "Receive Buffer Descriptor Field
Descriptions" table:
"Data length is the number of octets written by the eTSEC into this BD's
data buffer if L is cleared (the value is equal to MRBLR), or, if L is
set, the length of the frame including *CRC*, FCB (if RCTRL[PRSDEP > 00),
preamble (if MACCFG2[PreAmRxEn]=1), time stamp (if RCTRL[TS] = 1) and
any padding (RCTRL[PAL])."

Though the FCS bytes are removed by the driver before passing the skb
to the net stack, the Rx buffer size computation does not currently
take into account the FCS bytes (4 bytes).
Because the Rx buffer size is multiple of 512 bytes, leaving out the
FCS is not a problem for the default MTU of 1500, as the Rx buffer size
is 1536 in this case.  However, for custom MTUs, where the difference
between the MTU size and the Rx buffer size is less, this can be a
problem as the computed Rx buffer size won't be enough to accomodate
the FCS for a received frame that is big enough (close to MTU size).
In such case the received frame is considered to be incomplete (L flag
not set in the RxBD status) and silently dropped.

Note that the driver does not currently support S/G on Rx, so it has to
compute its Rx buffer size based on the MTU of the device.

Reported-by: Kristian Otnes <kotnes@cisco.com>
Signed-off-by: Claudiu Manoil <claudiu.manoil@freescale.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-10-15 16:53:50 -04:00
Valdis Kletnieks d4bf205da6 pstore: Fix duplicate {console,ftrace}-efi entries
The pstore filesystem still creates duplicate filename/inode pairs for
some pstore types.  Add the id to the filename to prevent that.

Before patch:

[/sys/fs/pstore] ls -li
total 0
1250 -r--r--r--. 1 root root 67 Sep 29 17:09 console-efi
1250 -r--r--r--. 1 root root 67 Sep 29 17:09 console-efi
1250 -r--r--r--. 1 root root 67 Sep 29 17:09 console-efi
1250 -r--r--r--. 1 root root 67 Sep 29 17:09 console-efi
1250 -r--r--r--. 1 root root 67 Sep 29 17:09 console-efi
1250 -r--r--r--. 1 root root 67 Sep 29 17:09 console-efi
1250 -r--r--r--. 1 root root 67 Sep 29 17:09 console-efi
1250 -r--r--r--. 1 root root 67 Sep 29 17:09 console-efi
1250 -r--r--r--. 1 root root 67 Sep 29 17:09 console-efi

After:

[/sys/fs/pstore] ls -li
total 0
1232 -r--r--r--. 1 root root 148 Sep 29 17:09 console-efi-141202499100000
1231 -r--r--r--. 1 root root  67 Sep 29 17:09 console-efi-141202499200000
1230 -r--r--r--. 1 root root 148 Sep 29 17:44 console-efi-141202705400000
1229 -r--r--r--. 1 root root  67 Sep 29 17:44 console-efi-141202705500000
1228 -r--r--r--. 1 root root  67 Sep 29 20:42 console-efi-141203772600000
1227 -r--r--r--. 1 root root 148 Sep 29 23:42 console-efi-141204854900000
1226 -r--r--r--. 1 root root  67 Sep 29 23:42 console-efi-141204855000000
1225 -r--r--r--. 1 root root 148 Sep 29 23:59 console-efi-141204954200000
1224 -r--r--r--. 1 root root  67 Sep 29 23:59 console-efi-141204954400000

Signed-off-by: Valdis Kletnieks <valdis.kletnieks@vt.edu>
Acked-by: Kees Cook <keescook@chromium.org>
Cc: stable@vger.kernel.org # 3.6+
Signed-off-by: Tony Luck <tony.luck@intel.com>
2014-10-15 13:51:33 -07:00
Michael S. Tsirkin 4b7fd2e688 virtio_net: fix use after free
commit 0b725a2ca6
    net: Remove ndo_xmit_flush netdev operation, use signalling instead.

added code that looks at skb->xmit_more after the skb has
been put in TX VQ. Since some paths process the ring and free the skb
immediately, this can cause use after free.

Fix by storing xmit_more in a local variable.

Cc: David S. Miller <davem@davemloft.net>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-10-15 16:47:45 -04:00
Nimrod Andy 28b5f058cf net: fec: ptp: fix convergence issue to support LinuxPTP stack
iMX6SX IEEE 1588 module has one hw issue in capturing the ATVR register.
The current SW flow is:
		ENET0->ATCR |= ENET_ATCR_CAPTURE_MASK;
		ts_counter_ns = ENET0->ATVR;
The ATVR value is not expected value that cause LinuxPTP stack cannot be convergent.

ENET Block Guide/ Chapter for the iMX6SX (PELE) address the issue:
After set ENET_ATCR[Capture], there need some time cycles before the counter
value is capture in the register clock domain. The wait-time-cycles is at least
6 clock cycles of the slower clock between the register clock and the 1588 clock.
So need something like:
		ENET0->ATCR |= ENET_ATCR_CAPTURE_MASK;
		wait();
		ts_counter_ns = ENET0->ATVR;

For iMX6SX, the 1588 ts_clk is fixed to 25Mhz, register clock is 66Mhz, so the
wait-time-cycles must be greater than 240ns (40ns * 6). The patch add 1us delay
before cpu read ATVR register.

Changes V2:
Modify the commit/comments log to describe the issue clearly.

Signed-off-by: Fugang Duan <B38611@freescale.com>
Acked-by: Richard Cochran <richardcochran@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-10-15 16:40:11 -04:00
Alexander Yarygin 673d659f5c perf kvm stat live: Enable events copying
Process of analyzing events caused by 2 functions: mmap_read() and
finished_round().

During mmap_read(), perf receives events from shared memory, queues
their pointers for further processing in finished_round() and notifies
the kernel that the events have been processed.

By the time when finished_round() is invoked, queued events can be
overwritten by the kernel, so the finished_round() occurs on potentially
corrupted memory.

Since there is no place where the event can be safely consumed, let's
copy events when queueing.

Signed-off-by: Alexander Yarygin <yarygin@linux.vnet.ibm.com>
Cc: Christian Borntraeger <borntraeger@de.ibm.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.kim@lge.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1412347212-28237-3-git-send-email-yarygin@linux.vnet.ibm.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2014-10-15 17:39:03 -03:00
Alexander Yarygin 54bf53b1cb perf session: Add option to copy events when queueing
When processing events the session code has an ordered samples queue
which is used to time-sort events coming in across multiple mmaps. At a
later point in time samples on the queue are flushed up to some
timestamp at which point the event is actually processed.

When analyzing events live (ie., record/analysis path in the same
command) there is a race that leads to corrupted events and parse errors
which cause perf to terminate. The problem is that when the event is
placed in the ordered samples queue it is only a reference to the event
which is really sitting in the mmap buffer. Even though the event is
queued for later processing the mmap tail pointer is updated which
indicates to the kernel that the event has been processed. The race is
flushing the event from the queue before it gets overwritten by some
other event. For commands trying to process events live (versus just
writing to a file) and processing a high rate of events this leads to
parse failures and perf terminates.

Examples hitting this problem are 'perf kvm stat live', especially with
nested VMs which generate 100,000+ traces per second, and a command
processing scheduling events with a high rate of context switching --
e.g., running 'perf bench sched pipe'.

This patch offers live commands an option to copy the event when it is
placed in the ordered samples queue.

Based on a patch from David Ahern <dsahern@gmail.com>

Signed-off-by: Alexander Yarygin <yarygin@linux.vnet.ibm.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Cc: Christian Borntraeger <borntraeger@de.ibm.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.kim@lge.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1412347212-28237-2-git-send-email-yarygin@linux.vnet.ibm.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2014-10-15 17:39:03 -03:00
Masanari Iida 96355f2cfb perf Documentation: Fix typos in perf/Documentation
This patch fix spelling typos found in tool/perf/Documentation.

Signed-off-by: Masanari Iida <standby24x7@gmail.com>
Acked-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Randy Dunlap <rdunlap@infradead.org>
Link: http://lkml.kernel.org/r/1410275930-17207-1-git-send-email-standby24x7@gmail.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2014-10-15 17:39:02 -03:00
Namhyung Kim 89dceb22c0 perf trace: Use thread_{,_set}_priv helpers
This is mechanical changes only for accounting access to thread->priv
properly in the source level.

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Acked-by: Jiri Olsa <jolsa@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: Namhyung Kim <namhyung.kim@lge.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1412556363-26229-6-git-send-email-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2014-10-15 17:39:02 -03:00