Commit Graph

154725 Commits

Author SHA1 Message Date
Peter Zijlstra
9d73777e50 clarify get_user_pages() prototype
Currently the 4th parameter of get_user_pages() is called len, but its
in pages, not bytes. Rename the thing to nr_pages to avoid future
confusion.

Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-06-25 11:22:13 -07:00
Paul Menage
ab420e6d9c UML: Fix some apparent bitrot
UML: Fix some apparent bitrot

- migration of net_device methods into net_device_ops
- dma_sync_single() changes

Signed-off-by: Paul Menage <menage@google.com>
Acked-by: Amerigo Wang <xiyou.wangcong@gmail.com>
--

This version is split from my earlier patch, including just the
portions that ar required for Linus' tree.

Fixes the following compile errors:

include/linux/dma-mapping.h:113: error: redefinition of 'dma_sync_single'
arch/um/include/asm/dma-mapping.h:84: error: previous definition of 'dma_sync_single' was here
include/linux/dma-mapping.h: In function 'dma_sync_single':
include/linux/dma-mapping.h:117: error: implicit declaration of function 'dma_sync_single_for_cpu'
include/linux/dma-mapping.h: At top level:
include/linux/dma-mapping.h:120: error: redefinition of 'dma_sync_sg'
arch/um/include/asm/dma-mapping.h:91: error: previous definition of 'dma_sync_sg' was here
include/linux/dma-mapping.h: In function 'dma_sync_sg':
include/linux/dma-mapping.h:124: error: implicit declaration of function 'dma_sync_sg_for_cpu'

arch/um/drivers/slirp_kern.c: In function 'slirp_init':
arch/um/drivers/slirp_kern.c:35: error: 'struct net_device' has no member named 'init'
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-06-25 11:22:13 -07:00
Ingo Molnar
47749b14e5 i2c: fix build bug in i2c-designware.c
This build error triggers on x86:

 drivers/built-in.o: In function `i2c_dw_init':
 i2c-designware.c:(.text+0x4e37ca): undefined reference to `clk_get_rate'
 drivers/built-in.o: In function `dw_i2c_probe':
 i2c-designware.c:(.devinit.text+0x51f5e): undefined reference to `clk_get'
 i2c-designware.c:(.devinit.text+0x51f76): undefined reference to `clk_enable'
 i2c-designware.c:(.devinit.text+0x520ff): undefined reference to `clk_disable'
 i2c-designware.c:(.devinit.text+0x52108): undefined reference to `clk_put'

Because this new driver uses the clk_*() facilities which is an
ARM-only thing currently.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Acked-by: Baruch Siach <baruch@tkos.co.il>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-06-25 11:22:12 -07:00
Jaswinder Singh Rajput
e5c5954779 perf_counter tools: Shorten names for events
Added new alias for events.

On AMD box:

 $ ./perf stat -e l1d -e l1d-misses -e l1d-write -e l1d-prefetch -e l1d-prefetch-miss -e l1i -e l1i-misses -e l1i-prefetch -e l2 -e l2-misses -e l2-write -e dtlb -e dtlb-misses -e itlb -e itlb-misses -e bpu -e bpu-misses -- ls -lR /usr/include/ > /dev/null

Before :

 Performance counter stats for 'ls -lR /usr/include/':

      248064467  L1-data-Cache-Load-Referencees  (scaled from 23.27%)
        1001433  L1-data-Cache-Load-Misses  (scaled from 23.34%)
         153691  L1-data-Cache-Store-Referencees  (scaled from 23.34%)
         423248  L1-data-Cache-Prefetch-Referencees  (scaled from 23.33%)
         302138  L1-data-Cache-Prefetch-Misses  (scaled from 23.25%)
      251217546  L1-instruction-Cache-Load-Referencees  (scaled from 23.25%)
        5757005  L1-instruction-Cache-Load-Misses  (scaled from 23.23%)
          93435  L1-instruction-Cache-Prefetch-Referencees  (scaled from 23.24%)
        6496073  L2-Cache-Load-Referencees  (scaled from 23.32%)
         609485  L2-Cache-Load-Misses  (scaled from 23.45%)
        6876991  L2-Cache-Store-Referencees  (scaled from 23.71%)
      248922840  Data-TLB-Cache-Load-Referencees  (scaled from 23.94%)
        5828386  Data-TLB-Cache-Load-Misses  (scaled from 24.17%)
      257613506  Instruction-TLB-Cache-Load-Referencees  (scaled from 24.20%)
           6833  Instruction-TLB-Cache-Load-Misses  (scaled from 23.88%)
      109043606  Branch-Cache-Load-Referencees  (scaled from 23.64%)
        5552296  Branch-Cache-Load-Misses  (scaled from 23.42%)

    0.413702461  seconds time elapsed.

After :

 Peformance counter stats for 'ls -lR /usr/include/':

      266590464  L1-d$-loads           (scaled from 23.03%)
        1222273  L1-d$-load-misses     (scaled from 23.58%)
         146204  L1-d$-stores          (scaled from 23.83%)
         406344  L1-d$-prefetches      (scaled from 24.09%)
         283748  L1-d$-prefetch-misses (scaled from 24.10%)
      249650965  L1-i$-loads           (scaled from 23.80%)
        3353961  L1-i$-load-misses     (scaled from 23.82%)
         104599  L1-i$-prefetches      (scaled from 23.68%)
        4836405  LLC-loads             (scaled from 23.67%)
         498214  LLC-load-misses       (scaled from 23.66%)
        4953994  LLC-stores            (scaled from 23.64%)
      243354097  dTLB-loads            (scaled from 23.77%)
        6468584  dTLB-load-misses      (scaled from 23.74%)
      249719549  iTLB-loads            (scaled from 23.25%)
           5060  iTLB-load-misses      (scaled from 23.00%)
      112343016  branch-loads          (scaled from 22.76%)
        5528876  branch-load-misses    (scaled from 22.54%)

    0.427154051  seconds time elapsed.

Reported-by : Ingo Molnar <mingo@elte.hu>
Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
Cc: Peter Zijlstra <peterz@infradead.org>
LKML-Reference: <1245934522.5308.39.camel@hpdv5.satnam>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-06-25 17:30:23 +02:00
Jesper Dangaard Brouer
308ff823eb nf_conntrack: Use rcu_barrier()
RCU barriers, rcu_barrier(), is inserted two places.

 In nf_conntrack_expect.c nf_conntrack_expect_fini() before the
 kmem_cache_destroy().  Firstly to make sure the callback to the
 nf_ct_expect_free_rcu() code is still around.  Secondly because I'm
 unsure about the consequence of having in flight
 nf_ct_expect_free_rcu/kmem_cache_free() calls while doing a
 kmem_cache_destroy() slab destroy.

 And in nf_conntrack_extend.c nf_ct_extend_unregister(), inorder to
 wait for completion of callbacks to __nf_ct_ext_free_rcu(), which is
 invoked by __nf_ct_ext_add().  It might be more efficient to call
 rcu_barrier() in nf_conntrack_core.c nf_conntrack_cleanup_net(), but
 thats make it more difficult to read the code (as the callback code
 in located in nf_conntrack_extend.c).

Signed-off-by: Jesper Dangaard Brouer <hawk@comx.dk>
Signed-off-by: Patrick McHardy <kaber@trash.net>
2009-06-25 16:32:52 +02:00
Clemens Ladisch
14744d7da2 sound: oxygen: make mic volume control mono
The microphone input and its volume register have only one channel, so
we have to make the corresponding mixer control a mono control.

Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2009-06-25 15:39:02 +02:00
Takashi Iwai
10121a12e2 Merge branch 'for-2.6.31' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound-2.6 into fix/asoc
Conflicts:
	MAINTAINERS
2009-06-25 15:28:14 +02:00
Linus Walleij
f6430a938d [ARM] 5565/2: Use PAGE_SIZE and RO_DATA() in link script
Update the link script for ARM to use PAGE_SIZE instead of hard-
coded 4096. Also the old RODATA macro is deprecated
for the RO_DATA(PAGE_SIZE) macro. As a consequence the PAGE_SIZE
was changed from (1UL << PAGE_SHIFT) to (_AC(1,UL) << PAGE_SHIFT)
because the linker does not understand the "UL" suffix to numeric
constants.

Signed-off-by: Linus Walleij <linus.walleij@stericsson.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2009-06-25 14:00:59 +01:00
Aaro Koskinen
7aa5514e71 [ARM] 5560/1: Avoid buffer overrun in case of an invalid IRQ
handle_bad_irq() expects the IRQ number to be valid (used for statistics),
so it cannot be called with an illegal vector. The problem was reported
by a static analysis tool.

The change makes bad_irq_desc redundant, so delete it.

Signed-off-by: Aaro Koskinen <aaro.koskinen@nokia.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2009-06-25 14:00:59 +01:00
Peter Ujfalusi
dd5e8e6b1d MAINTAINERS: Add entry for twl4030 series soc codec driver
New MAINTAINERS entry for twl4030 series soc codec driver
with Peter Ujfalusi as maintainer.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@nokia.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2009-06-25 13:56:26 +01:00
Russell King
8fd3ec6309 Merge branch 's3c-fixes' of git://aeryn.fluff.org.uk/bjdooks/linux 2009-06-25 13:49:07 +01:00
Russell King
f9bfccf11d Merge branch 'omap-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap-2.6 2009-06-25 13:47:21 +01:00
Thomas Gleixner
aa715284b4 futex: request only one page from get_user_pages()
Yanmin noticed that fault_in_user_writeable() requests 4 pages instead
of one.

That's the result of blindly trusting Linus' proposal :) I even looked
up the prototype to verify the correctness: the argument in question
is confusingly enough named "len" while in reality it means number of
pages.

Pointed-out-by: Yanmin Zhang <yanmin_zhang@linux.intel.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2009-06-25 14:33:46 +02:00
Jaswinder Singh Rajput
06813f6c74 perf_counter tools: Check for valid cache operations
Made new table for cache operartion stat 'hw_cache_stat' as:

 L1I : Read and prefetch only
 ITLB and BPU : Read-only

introduce is_cache_op_valid() for cache operation validity

And checks for valid cache operations.

Reported-by : Ingo Molnar <mingo@elte.hu>
Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
Cc: Peter Zijlstra <peterz@infradead.org>
LKML-Reference: <1245930367.5308.33.camel@localhost.localdomain>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-06-25 14:08:49 +02:00
Brandon Philips
d8146bb23e atl1*: add device_set_wakeup_enable to atl1*_set_wol
Tell PCI core that atl1* device can wakeup the system when WOL is
enabled by calling device_set_wakeup_enable.

Joerg noted that his atl1e device WOL fine after enabling it with
ethtool and changing /sys/class/net/eth0/device/power/wakeup to enabled
Tested on atl1e: https://bugzilla.novell.com/show_bug.cgi?id=493214

Tested by: Joerg Reuter <jreuter@novell.com>
Signed-off-by: Brandon Philips <bphilips@suse.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-06-25 02:58:17 -07:00
Rémi Denis-Courmont
2be6fa4c7e Phonet: generate Netlink RTM_DELADDR when destroying a device
Netlink address deletion events were not sent when a network device
vanished neither when Phonet was unloaded.

Signed-off-by: Rémi Denis-Courmont <remi.denis-courmont@nokia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-06-25 02:58:16 -07:00
Rémi Denis-Courmont
c7a1a4c80f Phonet: publicize the Netlink notification function
Signed-off-by: Rémi Denis-Courmont <remi.denis-courmont@nokia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-06-25 02:58:15 -07:00
David S. Miller
11687a1099 Revert "veth: prevent oops caused by netdev destructor"
This reverts commit ae0e8e8220.

This change had two problems:

1) Since it frees the stats in the drivers' close method, we
   can OOPS in the transmit routine.

2) stats are no longer remembered across ifdown/ifup which
   disagrees with how every other device operates.

Thanks to analysis and test patch from Serge E. Hallyn
and initial OOPS report by Sachin Sant.

Signed-off-by: David S. Miller <davem@davemloft.net>
2009-06-25 02:45:42 -07:00
Johannes Weiner
76c64c5e4c perf record: Fix filemap pathname parsing in /proc/pid/maps
Looking backward for the first space from the end of a line in
/proc/pid/maps does not find the start of the pathname of the mapped
file if it contains a space.

Since the only slashes we have in this file occur in the (absolute!)
pathname column of file mappings, looking for the first slash in a
line is a safe method to find the name.

Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
Cc: Stefani Seibold <stefani@seibold.net>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: Alexey Dobriyan <adobriyan@gmail.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
LKML-Reference: <20090624190835.GA25548@cmpxchg.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-06-25 11:35:58 +02:00
Catalin Marinas
a9d9058aba kmemleak: Allow the early log buffer to be configurable.
(feature suggested by Sergey Senozhatsky)

Kmemleak needs to track all the memory allocations but some of these
happen before kmemleak is initialised. These are stored in an internal
buffer which may be exceeded in some kernel configurations. This patch
adds a configuration option with a default value of 400 and also removes
the stack dump when the early log buffer is exceeded.

Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Acked-by: Sergey Senozhatsky <sergey.senozhatsky@mail.by>
2009-06-25 10:16:13 +01:00
Paul Mundt
1155de47cd ring-buffer: Make it generally available
In hunting down the cause for the hwlat_detector ring buffer spew in
my failed -next builds it became obvious that folks are now treating
ring_buffer as something that is generic independent of tracing and thus,
suitable for public driver consumption.

Given that there are only a few minor areas in ring_buffer that have any
reliance on CONFIG_TRACING or CONFIG_FUNCTION_TRACER, provide stubs for
those and make it generally available.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Cc: Jon Masters <jcm@jonmasters.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
LKML-Reference: <20090625053012.GB19944@linux-sh.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-06-25 10:31:30 +02:00
Li Zefan
00e54d087a ftrace: Remove duplicate newline
Before:
  # echo 'sys_open:traceon:' > set_ftrace_filter
  # echo 'sys_close:traceoff:5' > set_ftrace_filter
  # cat set_ftrace_filter
  #### all functions enabled ####
  sys_open:traceon:unlimited

  sys_close:traceoff:count=0

After:
  # cat set_ftrace_filter
  #### all functions enabled ####
  sys_open:traceon:unlimited
  sys_close:traceoff:count=0

Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
LKML-Reference: <4A4313A7.7030105@cn.fujitsu.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-06-25 10:28:36 +02:00
Tim Blechmann
7e895cfaad ALSA: lx6464es - configure ethersound io channels
as long as the io channel number is not set by the driver, the card
is not visible from the ethersound network

Signed-off-by: Tim Blechmann <tim@klingt.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2009-06-25 09:41:53 +02:00
Joe Perches
0d7392e544 sound: Use PCI_VDEVICE for CREATIVE and ECTIVA
Here's a patch on top of the others to use CREATIVE and ECTIVA

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2009-06-25 08:53:57 +02:00
Joe Perches
28d27aae94 sound: Use PCI_VDEVICE
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2009-06-25 08:52:49 +02:00
Takashi Iwai
dde6535686 ALSA: hda - Use model=acer-aspire-6530g for Acer Aspire 6930G
For Acer Aspire 6930G (1025:015e), acre-aspire-6530g model matches
obviously better.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2009-06-25 08:26:38 +02:00
Emilio López
320d592001 ALSA: hda - Fix acer-aspire-6530g model quirk
Fix the following bugs of acer-aspire-6530g model with ALC888:
- HP jack to mute all speaker outputs including LFE
- Make digital built-in mic working

Signed-off-by: Emilio López <buhitoescolar@gmail.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2009-06-25 08:25:22 +02:00
Takashi Iwai
261c240740 ALSA: hda - Add pin-sense trigger when needed for Realtek codecs
Realtek codecs require the pin-sense trigger call before actually
reading the pin-sense.  Without this, the pin-detection might not be
done accurately.

This patch adds the pin-capability check and issues the trigger call
if required.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2009-06-25 08:15:03 +02:00
Steve French
f46c7234e4 [CIFS] cleanup asn handling for ntlmssp
Also removes obsolete distinction between rawntlmssp and ntlmssp (in asn/SPNEGO)
since as jra noted we can always send raw ntlmssp in session setup now.

remove check for experimental runtime flag (/proc/fs/cifs/Experimental) in
ntlmssp path.

Reviewed-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Steve French <sfrench@us.ibm.com>
2009-06-25 03:07:48 +00:00
Simo Leone
6debdbc0ba [CIFS] Copy struct *after* setting the port, instead of before.
Acked-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Simo Leone <simo@archlinux.org>
Signed-off-by: Steve French <sfrench@us.ibm.com>
2009-06-25 02:44:43 +00:00
Jeff Layton
6459340cfc cifs: remove rw/ro options
cifs: remove rw/ro options

These options are handled at the VFS layer. They only ever set the
option in the smb_vol struct. Nothing was ever done with them afterward
anyway.

Signed-off-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Steve French <sfrench@us.ibm.com>
2009-06-25 02:33:01 +00:00
Jeff Layton
b48a485884 cifs: fix problems with earlier patches
cifs: fix problems with earlier patches

cifs_show_address hasn't been introduced yet, and fix a typo that was
silently fixed by a later patch in the series.

Signed-off-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Steve French <sfrench@us.ibm.com>
2009-06-25 02:32:57 +00:00
Jeff Layton
681bf72e48 cifs: have cifs parse scope_id out of IPv6 addresses and use it
This patch has CIFS look for a '%' in an IPv6 address. If one is
present then it will try to treat that value as a numeric interface
index suitable for stuffing into the sin6_scope_id field.

This should allow people to mount servers on IPv6 link-local addresses.

Signed-off-by: Jeff Layton <jlayton@redhat.com>
Acked-by: David Holder <david@erion.co.uk>
Signed-off-by: Steve French <sfrench@us.ibm.com>
2009-06-25 01:14:36 +00:00
Florian Fainelli
6a9b654616 cpmac: fix compilation failure introduced with netdev_ops conversion
This patch fixes and obvious typo in the netdev_ops initialization:
ndo_so_ioctl should be ndo_do_ioctl.

Signed-off-by: Florian Fainelli <florian@openwrt.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-06-24 18:03:11 -07:00
Herbert Xu
245acb8772 ipsec: Fix name of CAST algorithm
Our CAST algorithm is called cast5, not cast128.  Clearly nobody
has ever used it :)

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
2009-06-24 18:03:10 -07:00
Steve French
268875b9d1 [CIFS] Do not send tree disconnect if session is already disconnected
Noticed this when tree connect timed out (due to Samba server crash) -
we try to send a tree disconnect for a tid that does not exist
since we don't have a valid tree id yet. This checks that the
session is valid before sending the tree disconnect to handle
this case.

Signed-off-by: Steve French <sfrench@us.ibm.com>
2009-06-25 00:29:21 +00:00
Linus Torvalds
28d0325ce6 Linux 2.6.31-rc1 2009-06-24 16:25:37 -07:00
Linus Torvalds
236e946b53 Revert "PCI: use ACPI _CRS data by default"
This reverts commit 9e9f46c44e.

Quoting from the commit message:

 "At this point, it seems to solve more problems than it causes, so let's
  try using it by default.  It's an easy revert if it ends up causing
  trouble."

And guess what? The _CRS code causes trouble.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-06-24 16:23:03 -07:00
Linus Torvalds
f27884aead Merge git://git.infradead.org/battery-2.6
* git://git.infradead.org/battery-2.6:
  da9030_battery: Fix race between event handler and monitor
  Add MAX17040 Fuel Gauge driver
  w1: ds2760_battery: add support for sleep mode feature
  w1: ds2760: add support for EEPROM read and write
  ds2760_battery: cleanups in ds2760_battery_probe()
2009-06-24 14:35:57 -07:00
Linus Torvalds
c622304825 Merge branches 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/{vfs-2.6,audit-current}
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6:
  another race fix in jfs_check_acl()
  Get "no acls for this inode" right, fix shmem breakage
  inline functions left without protection of ifdef (acl)

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/audit-current:
  audit: inode watches depend on CONFIG_AUDIT not CONFIG_AUDIT_SYSCALL
2009-06-24 14:17:14 -07:00
Al Viro
d5bb68adda another race fix in jfs_check_acl()
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2009-06-24 17:02:42 -04:00
Al Viro
72c04902d1 Get "no acls for this inode" right, fix shmem breakage
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2009-06-24 16:58:48 -04:00
Eric Paris
3a6a6c16be audit: inode watches depend on CONFIG_AUDIT not CONFIG_AUDIT_SYSCALL
Even though one cannot make use of the audit watch code without
CONFIG_AUDIT_SYSCALL the spaghetti nature of the audit code means that
the audit rule filtering requires that it at least be compiled.

Thus build the audit_watch code when we build auditfilter like it was
before cfcad62c74

Clearly this is a point of potential future cleanup..

Reported-by: Frans Pop <elendil@planet.nl>
Signed-off-by: Eric Paris <eparis@redhat.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2009-06-24 16:42:05 -04:00
Markus Trippelsdorf
641cf4a668 inline functions left without protection of ifdef (acl)
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2009-06-24 16:34:50 -04:00
Linus Torvalds
bd453cd487 Merge branch 'futexes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'futexes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  futex: Fix the write access fault problem for real
2009-06-24 13:33:19 -07:00
Thomas Gleixner
d0725992c8 futex: Fix the write access fault problem for real
commit 64d1304a64 (futex: setup writeable mapping for futex ops which
modify user space data) did address only half of the problem of write
access faults.

The patch was made on two wrong assumptions:

1) access_ok(VERIFY_WRITE,...) would actually check write access.

   On x86 it does _NOT_. It's a pure address range check.

2) a RW mapped region can not go away under us.

   That's wrong as well. Nobody can prevent another thread to call
   mprotect(PROT_READ) on that region where the futex resides. If that
   call hits between the get_user_pages_fast() verification and the
   actual write access in the atomic region we are toast again.

The solution is to not rely on access_ok and get_user() for any write
access related fault on private and shared futexes. Instead we need to
fault it in with verification of write access.

There is no generic non destructive write mechanism which would fault
the user page in trough a #PF, but as we already know that we will
fault we can as well call get_user_pages() directly and avoid the #PF
overhead.

If get_user_pages() returns -EFAULT we know that we can not fix it
anymore and need to bail out to user space.

Remove a bunch of confusing comments on this issue as well.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: stable@kernel.org
2009-06-24 21:27:35 +02:00
Pekka Enberg
ba52270d18 SLUB: Don't pass __GFP_FAIL for the initial allocation
SLUB uses higher order allocations by default but falls back to small
orders under memory pressure. Make sure the GFP mask used in the initial
allocation doesn't include __GFP_NOFAIL.

Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-06-24 12:20:14 -07:00
Linus Torvalds
4923abf9f1 Don't warn about order-1 allocations with __GFP_NOFAIL
Traditionally, we never failed small orders (even regardless of any
__GFP_NOFAIL flags), and slab will allocate order-1 allocations even for
small allocations that could fit in a single page (in order to avoid
excessive fragmentation).

Maybe we should remove this warning entirely, but before making that
judgement, at least limit it to bigger allocations.

Acked-by: Pekka Enberg <penberg@cs.helsinki.fi>
Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-06-24 12:16:49 -07:00
Ingo Molnar
1b173f77dd perf_counter tools: Add CREDITS file for Git contributors
Much of perf's libraries comes from the Git project. I noticed
that the files (in tools/perf/util/*.[ch] and elsewhere) are
quite spartan wrt. credits, so lets add a CREDITS file that
includes an (incomplete!) list of main contributors.

Thanks guys, these libraries are really useful. Special thanks
go to Johannes Schindelin and Junio C Hamano for coming up with
this list.

List-Composed-By: Johannes Schindelin <Johannes.Schindelin@gmx.de>
Cc: Junio C Hamano <gitster@pobox.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-06-24 19:54:29 +02:00
Linus Torvalds
c82e6d450f Merge branch 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus
* 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus:
  Staging: octeon-ethernet: Fix race freeing transmit buffers.
  Staging: octeon-ethernet: Convert to use net_device_ops.
  MIPS: Cavium: Add CPU hotplugging code.
  MIPS: SMP: Allow suspend and hibernation if CPU hotplug is available
  MIPS: Add arch generic CPU hotplug
  DMA: txx9dmac: use dma_unmap_single if DMA_COMPL_{SRC,DEST}_UNMAP_SINGLE set
  MIPS: Sibyte: Fix build error if CONFIG_SERIAL_SB1250_DUART is undefined.
  MIPS: MIPSsim: Fix build error if MSC01E_INT_BASE is undefined.
  MIPS: Hibernation: Remove SMP TLB and cacheflushing code.
  MIPS: Build fix - include <linux/smp.h> into all smp_processor_id() users.
  MIPS: bug.h Build fix - include <linux/compiler.h>.
2009-06-24 10:47:38 -07:00