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Will replace open-coded variants elsewhere. Done in the same
style as the 32-bit versions.
Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Acked-by: Randy Dunlap <randy.dunlap@oracle.com>
Cc: Johannes Berg <johannes@sipsolutions.net>
Cc: John W. Linville <linville@tuxdriver.com>
Cc: Joe Perches <joe@perches.com>
Cc: Jiri Benc <jbenc@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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The following patch allows ixp4xx-beeper to be loaded by udev
automatically when compiled as a module with kernel versions 2.4.24 and
greater.
This patch is required because 43cc71eed1250755986da4c0f9898f9a635cb3bf
("platform: prefix MODALIAS with "platform:"") changed the modalias
string to have the extra prefix.
LKG7102D7:~# udevinfo -a -p /sys/devices/platform/ixp4xx-beeper.4
looking at device '/devices/platform/ixp4xx-beeper.4':
KERNEL=="ixp4xx-beeper.4"
SUBSYSTEM=="platform"
DRIVER==""
ATTR{modalias}=="platform:ixp4xx-beeper"
udev therefore tries to modprobe platform:ixp4xx-beeper instead of
ixp4xx-beeper.
LKG7102D7:~# udevtest /sys/devices/platform/ixp4xx-beeper.4
...
import_uevent_var: import into environment: 'PHYSDEVBUS=platform'
import_uevent_var: import into environment: 'MODALIAS=platform:ixp4xx-beeper'
main: looking at device '/devices/platform/ixp4xx-beeper.4' from
subsystem 'platform'
wait_for_sysfs: file '/sys/devices/platform/ixp4xx-beeper.4/bus'
appeared after 0 loops
main: run: 'socket:/org/kernel/udev/monitor'
main: run: '/sbin/modprobe --use-blacklist platform:ixp4xx-beeper'
With this patch, depmod adds an alias line (see below) to
modules.alias which allows modprobe to load the right module.
alias platform:ixp4xx-beeper ixp4xx-beeper
Signed-off-by: Gordon Farquharson <gordonfarquharson@gmail.com>
Signed-off-by: Alessandro Zummo <a.zummo@towertech.it>
Cc: Kay Sievers <kay.sievers@vrfy.org>
Cc: David Brownell <david-b@pacbell.net>
Cc: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Cc: Greg Kroah-Hartman <gregkh@suse.de>
Cc: Dmitry Torokhov <dtor@mail.ru>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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This version brings proper quote tracking across lines, and brings the
handling of comments into the same mechanism ensuring nesting is correctly
handled. It brings the usual flurry of fixes for false positives. It also
brings a number of new checks. The most contentious change will likely be
the checks for NR_CPUS as this throws some new warnings in kernel/sched.c.
Of note:
- all new quote tracking across lines
- all new comment tracking
- new more direct, less ambigious wording for some warnings
- recommends mutexes and completions over semaphores
- recommends strict_strto* over simple_strto*
- report on direct use of NR_CPUS
Andy Whitcroft (22):
Version: 0.16
string quote tracking should cross line boundaries
check spacing round -> correctly across newlines
checks for linux/ against asm/ include files should be warnings
standardise on 'required' and 'prohibited'
take the first end of condition when parsing statements
values: cope with unbalanced brackets
preprocessor #elif is not a function
preprocessor #if should not trigger trailing statement checks
test: allow us to limit output to a single error
recommend real mutexes over semaphores
asm checks should mirror those for __asm__
warn on semaphores being used in place of completions
trailing ; on control structure should ignore do {} while ();
recommend strict_strtoX over simple_strtoX
redo comment handling as a quote type
use of NR_CPUS is normally wrong
consistant spacing should only be about spaces
if brace check suppression should only apply to the top-levels
use tr/// to align spacing for operators
move to using four parameter form of substr
check and report modifications to include/asm
Signed-off-by: Andy Whitcroft <apw@shadowen.org>
Cc: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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on success
Mar 23 09:06:31 opensuse103 kernel: Installing 9P2000 support
Mar 23 09:06:31 opensuse103 kernel: sys_init_module: '9pnet_fd'->init suspiciously returned 1, it should follow 0/-E convention
Mar 23 09:06:31 opensuse103 kernel: sys_init_module: loading module anyway...
Mar 23 09:06:31 opensuse103 kernel: Pid: 5323, comm: modprobe Not tainted 2.6.25-rc6-git7-default #1
Mar 23 09:06:31 opensuse103 kernel: [<c013c253>] sys_init_module+0x172b/0x17c9
Mar 23 09:06:31 opensuse103 kernel: [<c0108a6a>] sys_mmap2+0x62/0x77
Mar 23 09:06:31 opensuse103 kernel: [<c01059c4>] sysenter_past_esp+0x6d/0xa9
Mar 23 09:06:31 opensuse103 kernel: =======================
Cc: Latchesar Ionkov <lucho@ionkov.net>
Cc: Eric Van Hensbergen <ericvh@opteron.(none)>
Cc: David S. Miller <davem@davemloft.net>
Cc: "Rafael J. Wysocki" <rjw@sisk.pl>
Cc: <devzero@web.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Silence two kerneldoc warnings.
Warning(kernel/audit.c:1276): No description found for parameter 'string'
Warning(kernel/audit.c:1276): No description found for parameter 'len'
[also fix a typo for bonus points]
Signed-off-by: Dave Jones <davej@codemonkey.org.uk>
Acked-by: Randy Dunlap <randy.dunlap@oracle.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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kafs doesn't check if the cell already exists - so if you do an echo "add
newcell.org 1.2.3.4" >/proc/fs/afs/cells it will try to create this cell
again. kobject will also complain about a double registration. To prevent
such problems, return -EEXIST in that case.
Signed-off-by: Sven Schnelle <svens@stackframe.org>
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Add a MAINTAINERS record for AFS.
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Current nobh_write_end() implementation ignore partial writes(copied < len)
case if page was fully mapped and simply mark page as Uptodate, which is
totally wrong because area [pos+copied, pos+len) wasn't updated explicitly in
previous write_begin call. It simply contains garbage from pagecache and
result in data leakage.
#TEST_CASE_BEGIN:
~~~~~~~~~~~~~~~~
In fact issue triggered by classical testcase
open("/mnt/test", O_RDWR|O_CREAT|O_TRUNC, 0666) = 3
ftruncate(3, 409600) = 0
writev(3, [{"a", 1}, {NULL, 4095}], 2) = 1
##TESTCASE_SOURCE:
~~~~~~~~~~~~~~~~~
#include <stdio.h>
#include <stdlib.h>
#include <fcntl.h>
#include <sys/uio.h>
#include <sys/mman.h>
#include <errno.h>
int main(int argc, char **argv)
{
int fd, ret;
void* p;
struct iovec iov[2];
fd = open(argv[1], O_RDWR|O_CREAT|O_TRUNC, 0666);
ftruncate(fd, 409600);
iov[0].iov_base="a";
iov[0].iov_len=1;
iov[1].iov_base=NULL;
iov[1].iov_len=4096;
ret = writev(fd, iov, sizeof(iov)/sizeof(struct iovec));
printf("writev = %d, err = %d\n", ret, errno);
return 0;
}
##TESTCASE RESULT:
~~~~~~~~~~~~~~~~~~
[root@ts63 ~]# mount | grep mnt2
/dev/mapper/test on /mnt2 type ext2 (rw,nobh)
[root@ts63 ~]# /tmp/writev /mnt2/test
writev = 1, err = 0
[root@ts63 ~]# hexdump -C /mnt2/test
00000000 61 65 62 6f 6f 74 00 00 f0 b9 b4 59 3a 00 00 00 |aeboot.....Y:...|
00000010 20 00 00 00 00 00 00 00 21 00 00 00 00 00 00 00 | .......!.......|
00000020 df df df df df df df df df df df df df df df df |................|
00000030 3a 00 00 00 2a 00 00 00 21 00 00 00 00 00 00 00 |:...*...!.......|
00000040 60 c0 8c 00 00 00 00 00 40 4a 8d 00 00 00 00 00 |`.......@J......|
00000050 00 00 00 00 00 00 00 00 41 00 00 00 00 00 00 00 |........A.......|
00000060 74 69 6d 65 20 64 64 20 69 66 3d 2f 64 65 76 2f |time dd if=/dev/|
00000070 6c 6f 6f 70 30 20 20 6f 66 3d 2f 64 65 76 2f 6e |loop0 of=/dev/n|
skip..
00000f50 00 00 00 00 00 00 00 00 31 00 00 00 00 00 00 00 |........1.......|
00000f60 6d 6b 66 73 2e 65 78 74 33 20 2f 64 65 76 2f 76 |mkfs.ext3 /dev/v|
00000f70 7a 76 67 2f 74 65 73 74 20 2d 62 34 30 39 36 00 |zvg/test -b4096.|
00000f80 a0 fe 8c 00 00 00 00 00 21 00 00 00 00 00 00 00 |........!.......|
00000f90 23 31 32 30 35 39 35 30 34 30 34 00 3a 00 00 00 |#1205950404.:...|
00000fa0 20 00 8d 00 00 00 00 00 21 00 00 00 00 00 00 00 | .......!.......|
00000fb0 d0 cf 8c 00 00 00 00 00 10 d0 8c 00 00 00 00 00 |................|
00000fc0 00 00 00 00 00 00 00 00 41 00 00 00 00 00 00 00 |........A.......|
00000fd0 6d 6f 75 6e 74 20 2f 64 65 76 2f 76 7a 76 67 2f |mount /dev/vzvg/|
00000fe0 74 65 73 74 20 20 2f 76 7a 20 2d 6f 20 64 61 74 |test /vz -o dat|
00000ff0 61 3d 77 72 69 74 65 62 61 63 6b 00 00 00 00 00 |a=writeback.....|
00001000 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|
As you can see file's page contains garbage from pagecache instead of zeros.
#TEST_CASE_END
Attached patch:
- Add sanity check BUG_ON in order to prevent incorrect usage by caller,
This is function invariant because page can has buffers and in no zero
*fadata pointer at the same time.
- Always attach buffers to page is it is partial write case.
- Always switch back to generic_write_end if page has buffers.
This is reasonable because if page already has buffer then generic_write_begin
was called previously.
Signed-off-by: Dmitri Monakhov <dmonakhov@openvz.org>
Reviewed-by: Nick Piggin <npiggin@suse.de>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Call mm_free_cgroup earlier. Otherwise a reference due to lazy mm switching
can prevent cgroup removal.
Signed-off-by: YAMAMOTO Takashi <yamamoto@valinux.co.jp>
Acked-by: Balbir Singh <balbir@linux.vnet.ibm.com>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: Paul Menage <menage@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Discourage people from inappropriately using in_atomic()
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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drivers/char/drm/ati_pcigart.c: In function 'drm_ati_pcigart_init':
drivers/char/drm/ati_pcigart.c:125: warning: format '%08X' expects type 'unsigned int', but argument 3 has type 'dma_addr_t'
Cc: Dave Airlie <airlied@linux.ie>
Cc: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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This has been forgotten in commit f5bbdacc419 ("[MTD] NAND Modularize
read function") and nobody compiled the driver.
Signed-off-by: Sebastian Siewior <bigeasy@linutronix.de>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: Joern Engel <joern@wh.fh-wedel.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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I believe http://bugzilla.kernel.org/show_bug.cgi?id=10318 is a false
positive. There's no way in which networking will be using highmem pages
here, so it won't be taking the KM_USER0 kmap slot, so there's no point in
performing these checks.
Cc: Pawel Staszewski <pstaszewski@artcom.pl>
Cc: Ingo Molnar <mingo@elte.hu>
Acked-by: Christoph Lameter <clameter@sgi.com>
Cc: "David S. Miller" <davem@davemloft.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
[ Really sad. We lose almost all real-life coverage of the debug tests
with this patch. Now it will only report problems for the cases where
people actually end up using a HIGHMEM page, not when they just _might_
use one. - Linus ]
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Because of a typo in iwch_accept_cr(), the cxgb3 connection handling
code programs the hardware IRD (incoming RDMA read queue depth) with
the value that is passed in for the ORD (outgoing RDMA read queue
depth). In particular this means that if an application passes in IRD
> 0 and ORD = 0 (which is a completely sane and valid thing to do for
an app that expects only incoming RDMA read requests), then the
hardware will end up programmed with IRD = 0 and the app will fail in
a mysterious way.
Fix this by using "ep->ird" instead of "ep->ord" in the intended place.
Signed-off-by: Roland Dreier <rolandd@cisco.com>
Acked-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc
* 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc:
[POWERPC] Fix missed hardware breakpoints across multiple threads
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Revert commit 1192aeb957402b45f311895f124e4ca41206843c ("ACPI:
drivers/acpi: elide a non-zero test on a result that is never 0")
because it turns out that thermal_cooling_device_register() does
actually return NULL if CONFIG_THERMAL is turned off (then the routine
turns into a dummy inline routine in the header files that returns NULL
unconditionally).
This was found with randconfig testing, causing a crash during bootup:
initcall 0x78878534 ran for 13 msecs: acpi_button_init+0x0/0x51()
Calling initcall 0x78878585: acpi_fan_init+0x0/0x2c()
BUG: unable to handle kernel NULL pointer dereference at 00000000
IP: [<782b8ad0>] acpi_fan_add+0x7d/0xfd
*pde = 00000000
Oops: 0000 [#1]
Modules linked in:
Pid: 1, comm: swapper Not tainted (2.6.25-rc7-sched-devel.git-x86-latest.git #14)
EIP: 0060:[<782b8ad0>] EFLAGS: 00010246 CPU: 0
EIP is at acpi_fan_add+0x7d/0xfd
EAX: b787c718 EBX: b787c400 ECX: b782ceb4 EDX: 00000007
ESI: 00000000 EDI: b787c6f4 EBP: b782cee0 ESP: b782cecc
DS: 007b ES: 007b FS: 0000 GS: 0000 SS: 0068
Process swapper (pid: 1, ti=b782c000 task=b7846000 task.ti=b782c000)
Stack: b787c459 00000000 b787c400 78790888 b787c60c b782cef8 782b6fb8 ffffffda
b787c60c 00000000 78790958 b782cf0c 783005d7 b787c60c 78790958 78790584
b782cf1c 783007f6 b782cf28 00000000 b782cf40 782ffc4a 78790958 b794d558
Call Trace:
[<782b6fb8>] ? acpi_device_probe+0x3e/0xdb
[<783005d7>] ? driver_probe_device+0x82/0xfc
[<783007f6>] ? __driver_attach+0x3a/0x70
[<782ffc4a>] ? bus_for_each_dev+0x3e/0x60
[<7830048c>] ? driver_attach+0x14/0x16
[<783007bc>] ? __driver_attach+0x0/0x70
[<7830006a>] ? bus_add_driver+0x9d/0x1b0
[<783008c3>] ? driver_register+0x47/0xa3
[<7813db00>] ? timespec_to_ktime+0x9/0xc
[<782b7331>] ? acpi_bus_register_driver+0x3a/0x3c
[<78878592>] ? acpi_fan_init+0xd/0x2c
[<78863656>] ? kernel_init+0xac/0x1f9
[<788635aa>] ? kernel_init+0x0/0x1f9
[<78114563>] ? kernel_thread_helper+0x7/0x10
=======================
Code: 6e 78 e8 57 44 e7 ff 58 e9 93 00 00 00 8b 55 f0 8d bb f4 02 00 00 80 4b 2d 10 8b 03 e8 87 cb ff ff 8d 83 18 03 00 00 80 63 2d ef <ff> 35 00 00 00 00 50 68 e8 9c 6e 78 e8 22 44 e7 ff b9 b6 9c 6e
EIP: [<782b8ad0>] acpi_fan_add+0x7d/0xfd SS:ESP 0068:b782cecc
---[ end trace 778e504de7e3b1e3 ]---
Kernel panic - not syncing: Attempted to kill init!
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Acked-by: Julia Lawall <julia@diku.dk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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There is a bug in the powerpc DABR (data access breakpoint) handling,
which can result in us missing breakpoints if several threads are trying
to break on the same address.
The circumstances are that do_page_fault() calls do_dabr(), this clears
the DABR (sets it to 0) and sets up the signal which will report to
userspace that the DABR was hit. The do_signal() code will restore the DABR
value on the way out to userspace.
If we reschedule before calling do_signal(), __switch_to() will check the
cached DABR value and compare it to the new thread's value, if they match
we don't set the DABR in hardware.
So if two threads have the same DABR value, and we schedule from one to
the other after taking the interrupt for the first thread hitting the DABR,
the second thread will run without the DABR set in hardware.
The cleanest fix is to move the cache update into set_dabr(), that way we
can't forget to do it.
Reported-by: Jan Kratochvil <jan.kratochvil@redhat.com>
Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
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This reverts commit 3811dbf67162bd08412f1b0e02e554f353e93bdb.
The masking was not at all useless, and it was sensible. We handle
GFP_ZERO in the caller, and passing it down to any page allocator logic
is buggy and wrong.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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* git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-for-linus:
lguest: comment documentation update.
lguest: Don't need comment terminator before disk section.
lguest: lguest.txt documentation fix
lguest: Add puppies which where previously missing.
virtio_pci: unregister virtio device at device remove
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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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... and take it out of ->umount_begin() instances. Call with all locks
already taken (by do_umount()) and leave calling release_mounts() to
caller (it will do release_mounts() anyway, so we can just put into
the same list).
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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... and fix a race on access of ->mnt_share et.al. without namespace_sem
in the latter.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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make propagate_mount_busy() exclude references from the vfsmounts
that had been isolated by umount_tree() and are just waiting for
release_mounts() to dispose of their ->mnt_parent/->mnt_mountpoint.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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A lot of places misuse struct nameidata when they need struct path.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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Took some cycles to re-read the Lguest Journey end-to-end, fix some
rot and tighten some phrases.
Only comments change. No new jokes, but a couple of recycled old jokes.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
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Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
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Mention the config options for the Virtio drivers and move the Virtualization
menu to the toplevel.
Signed-off-by: Paul Bolle <pebolle@tiscali.nl>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
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lguest doesn't have features, it has puppies!
Signed-off-by: Timothy R Ansell <mithro@mithis.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
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Make sure to call unregister_virtio_device() when a virtio device is removed.
Otherwise, virtio_pci.ko cannot be rmmod'd.
This was spotted by Marcelo Tosatti.
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
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git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc
* 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc:
[POWERPC] update pasemi_defconfig
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Linus noticed a second bug and an uncleanliness:
- we'd return on any instruction fetch fault
- we'd use both the value of 16 and the PF_INSTR symbol which are
the same and make no sense
the cleanup nicely unifies this piece of logic.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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git://git.kernel.org/pub/scm/linux/kernel/git/x86/linux-2.6-x86
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/x86/linux-2.6-x86:
xen: fix UP setup of shared_info
xen: fix RMW when unmasking events
x86, documentation: nmi_watchdog=2 works on x86_64
x86: stricter check in follow_huge_addr()
rdc321x: GPIO routines bugfixes
x86: ptrace.c: fix defined-but-unused warnings
x86: fix prefetch workaround
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git://git.kernel.org/pub/scm/linux/kernel/git/hskinnemoen/avr32-2.6
* 'avr32-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/hskinnemoen/avr32-2.6:
avr32: Fix bug in early resource allocation code
avr32: Build fix for CONFIG_BUG=n
avr32: Work around byteswap bug in gcc < 4.2
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We need to set up the shared_info pointer once we've mapped the real
shared_info into its fixmap slot. That needs to happen once the general
pagetable setup has been done. Previously, the UP shared_info was set
up one in xen_start_kernel, but that was left pointing to the dummy
shared info. Unfortunately there's no really good place to do a later
setup of the shared_info in UP, so just do it once the pagetable setup
has been done.
[ Stable: needed in 2.6.24.x ]
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Cc: Stable Kernel <stable@kernel.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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xen_irq_enable_direct and xen_sysexit were using "andw $0x00ff,
XEN_vcpu_info_pending(vcpu)" to unmask events and test for pending ones
in one instuction.
Unfortunately, the pending flag must be modified with a locked operation
since it can be set by another CPU, and the unlocked form of this
operation was causing the pending flag to get lost, allowing the processor
to return to usermode with pending events and ultimately deadlock.
The simple fix would be to make it a locked operation, but that's rather
costly and unnecessary. The fix here is to split the mask-clearing and
pending-testing into two instructions; the interrupt window between
them is of no concern because either way pending or new events will
be processed.
This should fix lingering bugs in using direct vcpu structure access too.
[ Stable: needed in 2.6.24.x ]
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Cc: Stable <stable@kernel.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Signed-off-by: Marcin Slusarz <marcin.slusarz@gmail.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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The first page of the compound page is determined in follow_huge_addr()
but then PageCompound() only checks if the page is part of a compound page.
PageHead() allows checking if this is indeed the first page of the
compound.
Cc: Jeremy Fitzhardinge <jeremy@goop.org>
Signed-off-by: Christoph Lameter <clameter@sgi.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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This patch fixes the use of GPIO routines which are in the PCI
configuration space of the RDC321x, therefore reading/writing
to this space without spinlock protection can be problematic.
We also now request and free GPIOs and support the MGB100
board, previous code was very AR525W-centric.
Signed-off-by: Volker Weiss <volker@tintuc.de>
Signed-off-by: Florian Fainelli <florian.fainelli@telecomint.eu>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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arch/x86/kernel/ptrace.c:548: warning: 'ptrace_bts_get_size' defined but not used
arch/x86/kernel/ptrace.c:558: warning: 'ptrace_bts_read_record' defined but not used
arch/x86/kernel/ptrace.c:607: warning: 'ptrace_bts_clear' defined but not used
arch/x86/kernel/ptrace.c:617: warning: 'ptrace_bts_drain' defined but not used
arch/x86/kernel/ptrace.c:720: warning: 'ptrace_bts_config' defined but not used
arch/x86/kernel/ptrace.c:788: warning: 'ptrace_bts_status' defined but not used
Cc: Roland McGrath <roland@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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some early Athlon XP's and Opterons generate bogus faults on prefetch
instructions. The workaround for this regressed over .24 - reinstate it.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6
* 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6:
ACPI: drivers/acpi: elide a non-zero test on a result that is never 0
pnpacpi: reduce printk severity for "pnpacpi: exceeded the max number of ..."
cpuidle: fix 100% C0 statistics regression
cpuidle: fix cpuidle time and usage overflow
ACPI: fix mis-merge -- invoke acpi_unlazy_tlb() only on C3 entry
ACPI: fix a regression of ACPI device driver autoloading
ACPI: SBS: remove typo from sbchc.c
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The futex init function is called init(). This is a pain in the neck
when debugging when you code dies in ... init :-)
This renames it to futex_init().
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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add_reserved_region() tries to keep the resource list sorted, so when
looking for a place to insert the new resource, it may break out
before the last entry.
When this happens, the list is broken in two because the sibling field
of the new entry doesn't point to the next resource. Fix it by
updating the new resource's sibling field appropriately.
Signed-off-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com>
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The function thermal_cooling_device_register always returns either a valid
pointer or a value made with ERR_PTR, so a test for non-zero on the result
will always succeed.
The problem was found using the following semantic match.
(http://www.emn.fr/x-info/coccinelle/)
//<smpl>
@a@
expression E, E1;
statement S,S1;
position p;
@@
E = thermal_cooling_device_register(...)
... when != E = E1
if@p (E) S else S1
@n@
position a.p;
expression E,E1;
statement S,S1;
@@
E = NULL
... when != E = E1
if@p (E) S else S1
@depends on !n@
expression E;
statement S,S1;
position a.p;
@@
* if@p (E)
S else S1
//</smpl>
Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Len Brown <len.brown@intel.com>
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'video' into release
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* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: (43 commits)
[IPSEC]: Fix BEET output
[ICMP]: Dst entry leak in icmp_send host re-lookup code (v2).
[AX25]: Remove obsolete references to BKL from TODO file.
[NET]: Fix multicast device ioctl checks
[IRDA]: Store irnet_socket termios properly.
[UML]: uml-net: don't set IFF_ALLMULTI in set_multicast_list
[VLAN]: Don't copy ALLMULTI/PROMISC flags from underlying device
netxen, phy/marvell, skge: minor checkpatch fixes
S2io: Handle TX completions on the same CPU as the sender for MIS-X interrupts
b44: Truncate PHY address
skge napi->poll() locking bug
rndis_host: fix oops when query for OID_GEN_PHYSICAL_MEDIUM fails
cxgb3: Fix lockdep problems with sge.reg_lock
ehea: Fix IPv6 support
dm9000: Support promisc and all-multi modes
dm9601: configure MAC to drop invalid (crc/length) packets
dm9601: add Hirose USB-100 device ID
Marvell PHY m88e1111 driver fix
netxen: fix rx dropped stats
netxen: remove low level tx lock
...
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* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6:
[SPARC64]: Define TASK_SIZE_OF()
[SPARC64]: flush_ptrace_access() needs preemption disable.
[SPARC64]: Update defconfig.
[SPARC64]: Fix allnoconfig build, ptrace.c missing CONFIG_COMPAT checks.
[SPARC64]: Fix __get_cpu_var in preemption-enabled area.
[SPARC64]: Fix sparse warnings in arch/sparc64/kernel/signal.c
[SPARC64]: Fix most sparse warnings in arch/sparc64/kernel/sys_sparc.c
[SPARC64]: Fix sparse warnings in arch/sparc64/kernel/time.c
[SPARC64]: Fix sparse warnings in arch/sparc64/kernel/ptrace.c
[SPARC64]: Fix sparse warnings in arch/sparc64/kernel/irq.c
[SPARC64]: Fix sparse warnings in arch/sparc64/kernel/iommu.c
[SPARC64]: Fix sparse errors in arch/sparc64/kernel/traps.c
[SPARC64]: Fix sparse warnings in arch/sparc64/kernel/{cpu,setup}.c
[SPARC64]: Adjust {TLBTEMP,TSBMAP}_BASE.
[SPARC64]: Make save_stack_trace() more efficient.
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This make "cat /proc/${PID}/pagemap" more efficient for
32-bit tasks.
Based upon a report by Mariusz Kozlowski.
Signed-off-by: David S. Miller <davem@davemloft.net>
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The IPv6 BEET output function is incorrectly including the inner
header in the payload to be protected. This causes a crash as
the packet doesn't actually have that many bytes for a second
header.
The IPv4 BEET output on the other hand is broken when it comes
to handling an inner IPv6 header since it always assumes an
inner IPv4 header.
This patch fixes both by making sure that neither BEET output
function touches the inner header at all. All access is now
done through the protocol-independent cb structure. Two new
attributes are added to make this work, the IP header length
and the IPv4 option length. They're filled in by the inner
mode's output function.
Thanks to Joakim Koskela for finding this problem.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
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git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-2.6
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