18 Apr, 2015
4 commits
-
Pull MIPS updates from Ralf Baechle:
"This is the main pull request for MIPS for Linux 4.1. Most
noteworthy:- Add more Octeon-optimized crypto functions
- Octeon crypto preemption and locking fixes
- Little endian support for Octeon
- Use correct CSR to soft reset Octeons
- Support LEDs on the Octeon-based DSR-1000N
- Fix PCI interrupt mapping for the Octeon-based DSR-1000N
- Mark prom_free_prom_memory() as __init for a number of systems
- Support for Imagination's Pistachio SOC. This includes arch and
CLK bits. I'd like to merge pinctrl bits later
- Improve parallelism of csum_partial for certain pipelines
- Organize DTB files in subdirs like other architectures
- Implement read_sched_clock for all MIPS platforms other than
Octeon
- Massive series of 38 fixes and cleanups for the FPU emulator /
kernel
- Further FPU remulator work to support new features. This sits on a
separate branch which also has been pulled into the 4.1 KVM branch
- Clean up and fixes for the SEAD3 eval board; remove unused file
- Various updates for Netlogic platforms
- A number of small updates for Loongson 3 platforms
- Increase the memory limit for ATH79 platforms to 256MB
- A fair number of fixes and updates for BCM47xx platforms
- Finish the implementation of XPA support
- MIPS FDC support. No, not floppy controller but Fast Debug Channel :)
- Detect the R16000 used in SGI legacy platforms
- Fix Kconfig dependencies for the SSB bus support"* 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus: (265 commits)
MIPS: Makefile: Fix MIPS ASE detection code
MIPS: asm: elf: Set O32 default FPU flags
MIPS: BCM47XX: Fix detecting Microsoft MN-700 & Asus WL500G
MIPS: Kconfig: Disable SMP/CPS for 64-bit
MIPS: Hibernate: flush TLB entries earlier
MIPS: smp-cps: cpu_set FPU mask if FPU present
MIPS: lose_fpu(): Disable FPU when MSA enabled
MIPS: ralink: add missing symbol for RALINK_ILL_ACC
MIPS: ralink: Fix bad config symbol in PCI makefile.
SSB: fix Kconfig dependencies
MIPS: Malta: Detect and fix bad memsize values
Revert "MIPS: Avoid pipeline stalls on some MIPS32R2 cores."
MIPS: Octeon: Delete override of cpu_has_mips_r2_exec_hazard.
MIPS: Fix cpu_has_mips_r2_exec_hazard.
MIPS: kernel: entry.S: Set correct ISA level for mips_ihb
MIPS: asm: spinlock: Fix addiu instruction for R10000_LLSC_WAR case
MIPS: r4kcache: Use correct base register for MIPS R6 cache flushes
MIPS: Kconfig: Fix typo for the r2-to-r6 emulator kernel parameter
MIPS: unaligned: Fix regular load/store instruction emulation for EVA
MIPS: unaligned: Surround load/store macros in do {} while statements
... -
Pull Xtensa updates from Chris Zankel:
- fix linker script transformation for .text / .text.fixup
- wire bpf and execveat syscalls
- provide __NR_sync_file_range2 instead of __NR_sync_file_range, as
that's what xtensa uses.- make xtfpgs LCD driver functional and configurable. This fixes
hardware lockup on KC705/ML605 boot- add audio subsystem bits to xtfpga DTS and provide sample KC705
config with audio features enabled- add CY7C67300 USB controller support to XTFPGA
- fix locking issues in ISS network driver
- document PIC and MX interrupt distributor device tree bindings
* tag 'xtensa-20150416' of git://github.com/czankel/xtensa-linux:
xtensa: xtfpga: add CY7C67300 USB controller support
irqchip: xtensa-pic: xtensa-mx: document DT bindings
xtensa: ISS: fix locking in TAP network adapter
xtensa: Fix fix linker script transformation for .text / .text.fixup
xtensa: provide __NR_sync_file_range2 instead of __NR_sync_file_range
xtensa: wire bpf and execveat syscalls
xtensa: xtfpga: fix hardware lockup caused by LCD driver
xtensa: xtfpga: provide defconfig with audio subsystem
xtensa: xtfpga: add audio card to xtfpga DTS -
Pull block core fix from Jens Axboe:
"A commit in the previous pull request introduce a regression. So far
only observed on qemu-sparc64, but it's a general bug. Please pull
this single fix to rectify that, thanks"[ And it turns out that it's been seen outside of that qemu-sparc64
case, and is easy to trigger with small number of CPUs and blk-mq
enabled by default - Linus ]* 'for-linus' of git://git.kernel.dk/linux-block:
blk-mq: fix iteration of busy bitmap -
Pull ACPICA updates from Rafael Wysocki:
"This updates the kernel's ACPICA code to upstream revision 20150410
and adds a fix for a GPE handling regression introduced during the
3.19 cycle on top of that.Included are two stable-candidate bug fixes (one of them fixing a 3.16
regression), multiple other fixes and a bunch of cleanups.Specifics:
- Fix for a GPE handling regression on Dell Latitude D600 that caused
GPE signaling to stop working on that machine, which appears to be
due to a hardware glitch, but it used to work and it can be made
work again in a relativly straightforward way (Rafael J Wysocki).- Fix for a mutex unlock regression related to the handling of ACPI
tables introduced during the 3.16 development cycle (Octavian
Purdila).- _REV modification to always return 2 which has been done by all
versions of Windows since NT and the firmware people started to use
it to distinguish between OSes in their AML and do some silly and
wrong things on that basis (Bob Moore).- Fixes and cleanups related to the acpi_physicall_address data type
including one stable-candidate fix for an issue occasionally
occuring on 64-bit machines running 32-bit kernels where using
offsets provided by the firmware may lead to address overflows (Lv
Zheng).- External() opcode support infrastructure needed for recompiling
disassembled ACPI tables in some cases including interpreter
modification to ignore that opcode (Bob Moore).- Support for the "Windows 2015" string in _OSI (Bob Moore).
- GPE debug interface change to return values read from hardware
registers (Lv Zheng).- Removal of the __DATE__ macro usage in tools (Rasmus Villemoes).
- Assorted minor fixes and cleanups (Lv Zheng, Rickard Strandqvist,
Bob Moore)"* tag 'acpica-4.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (32 commits)
ACPICA: Store GPE register enable masks upfront
ACPICA: Update version to 20150410.
ACPICA: Fix a couple issues with the local printf module.
ACPICA: Disassembler: Some cleanup of the table dump module.
ACPICA: iASL: Add support for MSDM ACPI table.
ACPICA: Update for SLIC ACPI table.
ACPICA: Add "//" before ascii output of buffers.
ACPICA: Remove unused internal AML opcode.
ACPICA: Permanently set _REV to the value '2'.
ACPICA: Add "Windows 2015" string to _OSI support.
ACPICA: Add infrastructure for External() opcode.
ACPICA: iASL: Enhancement for constant folding.
ACPICA: iASL/Disassembler: Add option to assume table contains valid AML.
ACPICA: Update AML Debugger global variables.
ACPICA: Update Resource descriptor dump module.
ACPICA: Fix a sscanf format string.
ACPICA: Casting changes around acpi_physical_address/acpi_size.
ACPICA: Resources: Correct conditional compilation definitions.
ACPICA: Utilities: Correct conditional compilation definitions.
ACPICA: Tables: Move an iasl specific table function to iasl source file.
...
17 Apr, 2015
36 commits
-
Commit 889fa31f00b2 was a bit too eager in reducing the loop count,
so we ended up missing queues in some configurations. Ensure that
our division rounds up, so that's not the case.Reported-by: Guenter Roeck
Fixes: 889fa31f00b2 ("blk-mq: reduce unnecessary software queue looping")
Signed-off-by: Jens Axboe -
Merge third patchbomb from Andrew Morton:
- various misc things
- a couple of lib/ optimisations
- provide DIV_ROUND_CLOSEST_ULL()
- checkpatch updates
- rtc tree
- befs, nilfs2, hfs, hfsplus, fatfs, adfs, affs, bfs
- ptrace fixes
- fork() fixes
- seccomp cleanups
- more mmap_sem hold time reductions from Davidlohr
* emailed patches from Andrew Morton : (138 commits)
proc: show locks in /proc/pid/fdinfo/X
docs: add missing and new /proc/PID/status file entries, fix typos
drivers/rtc/rtc-at91rm9200.c: make IO endian agnostic
Documentation/spi/spidev_test.c: fix warning
drivers/rtc/rtc-s5m.c: allow usage on device type different than main MFD type
.gitignore: ignore *.tar
MAINTAINERS: add Mediatek SoC mailing list
tomoyo: reduce mmap_sem hold for mm->exe_file
powerpc/oprofile: reduce mmap_sem hold for exe_file
oprofile: reduce mmap_sem hold for mm->exe_file
mips: ip32: add platform data hooks to use DS1685 driver
lib/Kconfig: fix up HAVE_ARCH_BITREVERSE help text
x86: switch to using asm-generic for seccomp.h
sparc: switch to using asm-generic for seccomp.h
powerpc: switch to using asm-generic for seccomp.h
parisc: switch to using asm-generic for seccomp.h
mips: switch to using asm-generic for seccomp.h
microblaze: use asm-generic for seccomp.h
arm: use asm-generic for seccomp.h
seccomp: allow COMPAT sigreturn overrides
... -
Let's show locks which are associated with a file descriptor in
its fdinfo file.Currently we don't have a reliable way to determine who holds a lock. We
can find some information in /proc/locks, but PID which is reported there
can be wrong. For example, a process takes a lock, then forks a child and
dies. In this case /proc/locks contains the parent pid, which can be
reused by another process.$ cat /proc/locks
...
6: FLOCK ADVISORY WRITE 324 00:13:13431 0 EOF
...$ ps -C rpcbind
PID TTY TIME CMD
332 ? 00:00:00 rpcbind$ cat /proc/332/fdinfo/4
pos: 0
flags: 0100000
mnt_id: 22
lock: 1: FLOCK ADVISORY WRITE 324 00:13:13431 0 EOF$ ls -l /proc/332/fd/4
lr-x------ 1 root root 64 Mar 5 14:43 /proc/332/fd/4 -> /run/rpcbind.lock$ ls -l /proc/324/fd/
total 0
lrwx------ 1 root root 64 Feb 27 14:50 0 -> /dev/pts/0
lrwx------ 1 root root 64 Feb 27 14:50 1 -> /dev/pts/0
lrwx------ 1 root root 64 Feb 27 14:49 2 -> /dev/pts/0You can see that the process with the 324 pid doesn't hold the lock.
This information is required for proper dumping and restoring file
locks.Signed-off-by: Andrey Vagin
Cc: Jonathan Corbet
Cc: Alexander Viro
Acked-by: Jeff Layton
Acked-by: "J. Bruce Fields"
Acked-by: Cyrill Gorcunov
Cc: Pavel Emelyanov
Cc: Joe Perches
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
docs: add missing and new /proc/PID/status file entries, fix typos
Signed-off-by: Nathan Scott
Signed-off-by: Chen Hanxiao
Cc: Serge Hallyn
Cc: "Eric W. Biederman"
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Change the __raw IO calls to readl/write_relaxed which makes the driver
endian agnostic to run properly on big endian systems.Signed-off-by: Ben Dooks
Cc: Alessandro Zummo
Cc: Andrew Victor
Acked-by: Nicolas Ferre
Acked-by: Jean-Christophe PLAGNIOL-VILLARD
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Documentation/spi/spidev_test.c:83:5: warning: no previous prototype for 'unespcape' [-Wmissing-prototypes]
fix spelling too.
Acked-by: Mark Brown
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
The RTC driver supports two flavors of S5M devices: S5M8767-like and
S2MPS14-like.On S2MPS13 and S2MPS14 devices the RTC module is the same so we want to
re-use the existing support of S2MPS14. However device type was passed
from parent MFD driver in platform data structure. This way for the
S2MPS13 device the main MFD driver passed device type of 'S2MPS13X'.Instead decouple detecting of device type between main MFD and RTC driver.
This allows adding support for other S2MPS14 variations (like S2MPS11 and
S2MPS13) easily by adding to mfd/sec-core.c:static const struct mfd_cell s2mps13_devs[] = {
{ .name = "s2mps14-rtc", }
};Signed-off-by: Krzysztof Kozlowski
Cc: Alessandro Zummo
Cc: Kyungmin Park
Cc: Marek Szyprowski
Cc: Chanwoo Choi
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Running make tar-pkg results in following:
# Untracked files:
# (use "git add ..." to include in what will be committed)
#
# linux-4.0.0-rc3-next-20150313-150225--x86.tarThis patch makes git ignore *.tar files.
Running 'git ls-files -i --exclude-standard' does not show any
tar files excluded from tracking after the change.Signed-off-by: Andrey Skvortsov
Cc: Michal Marek
Cc: Greg Kroah-Hartman
Cc: Boaz Harrosh
Cc: Andi Kleen
Cc: Benjamin Romer
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Add the new list that Mediatek specific patches should also be
directed to.Signed-off-by: Matthias Brugger
Cc: Olof Johansson
Cc: Arnd Bergmann
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
The mm->exe_file is currently serialized with mmap_sem (shared) in order
to both safely (1) read the file and (2) compute the realpath by calling
tomoyo_realpath_from_path, making it an absolute overkill. Good users
will, on the other hand, make use of the more standard get_mm_exe_file(),
requiring only holding the mmap_sem to read the value, and relying on
reference[akpm@linux-foundation.org: coding-style fixes]
Signed-off-by: Davidlohr Bueso
Acked-by: Tetsuo Handa
Cc: James Morris
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
In the future mm->exe_file will be done without mmap_sem serialization,
thus isolate and reorganize the related code to make the transition
easier. Good users will, make use of the more standard get_mm_exe_file(),
requiring only holding the mmap_sem to read the value, and relying on
reference counting to make sure that the exe file won't dissappear
underneath us while getting the dcookie.Signed-off-by: Davidlohr Bueso
Cc: Arnd Bergmann
Cc: Robert Richter
Cc: Benjamin Herrenschmidt
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
sync_buffer() needs the mmap_sem for two distinct operations, both only
occurring upon user context switch handling:1) Dealing with the exe_file.
2) Adding the dcookie data as we need to lookup the vma that
backs it. This is done via add_sample() and add_data().This patch isolates 1), for it will no longer need the mmap_sem for
serialization. However, for now, make of the more standard
get_mm_exe_file(), requiring only holding the mmap_sem to read the value,
and relying on reference counting to make sure that the exe file won't
dissappear underneath us while doing the get dcookie.As a consequence, for 2) we move the mmap_sem locking into where we really
need it, in lookup_dcookie(). The benefits are twofold: reduce mmap_sem
hold times, and cleaner code.[akpm@linux-foundation.org: export get_mm_exe_file for arch/x86/oprofile/oprofile.ko]
Signed-off-by: Davidlohr Bueso
Cc: Robert Richter
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
This modifies the IP32 (SGI O2) platform and reset code to utilize the new
rtc-ds1685 driver. The old mc146818rtc.h header is removed and ip32_defconfig
is updated as well.Signed-off-by: Joshua Kinard
Acked-by: Ralf Baechle
Cc: Alessandro Zummo
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Cc: Yalin Wang
Cc: Russell King
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Switch to using the newly created asm-generic/seccomp.h for the seccomp
strict mode syscall definitions. The obsolete sigreturn syscall override
is retained in 32-bit mode, and the ia32 syscall overrides are used in
the compat case. Remaining definitions were identical.Signed-off-by: Kees Cook
Cc: Ingo Molnar
Cc: "H. Peter Anvin"
Cc: Thomas Gleixner
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Switch to using the newly created asm-generic/seccomp.h for the seccomp
strict mode syscall definitions. The obsolete sigreturn in COMPAT mode
is retained as an override. Remaining definitions are identical. Also
corrected missing #define for header reinclusion protection.Signed-off-by: Kees Cook
Cc: "David S. Miller"
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Switch to using the newly created asm-generic/seccomp.h for the seccomp
strict mode syscall definitions. The obsolete sigreturn in COMPAT mode is
retained as an override. Remaining definitions are identical, though they
incorrectly appeared in uapi, which has been corrected.Signed-off-by: Kees Cook
Cc: Benjamin Herrenschmidt
Cc: Paul Mackerras
Cc: Michael Ellerman
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Switch to using the newly created asm-generic/seccomp.h for the seccomp
strict mode syscall definitions. Definitions were identical.Signed-off-by: Kees Cook
Cc: "James E.J. Bottomley"
Cc: Helge Deller
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Switch to using the newly created asm-generic/seccomp.h for the seccomp
strict mode syscall definitions. COMPAT definitions retain their
overrides and the remaining definitions were identical.Signed-off-by: Kees Cook
Cc: Ralf Baechle
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Switch to using the newly created asm-generic/seccomp.h for the seccomp
strict mode syscall definitions. Since microblaze is 32-bit, the COMPAT
seccomp defines are unused and can be dropped. The obsolete sigreturn
for seccomp strict mode is retained as an override. Remaining definitions
are identical.Signed-off-by: Kees Cook
Cc: Michal Simek
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Switch to using the newly created asm-generic/seccomp.h for the seccomp
strict mode syscall definitions. Definitions were identical.Signed-off-by: Kees Cook
Cc: Russell King
Cc: Laura Abbott
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Most architectures don't need to do much special for the strict-mode
seccomp syscall entries. Remove the redundant headers and reduce the
others.This patch (of 8):
Some architectures may need to override the compat sigreturn definition,
as is already possible in the non-compat case.Signed-off-by: Kees Cook
Cc: Ingo Molnar
Cc: "H. Peter Anvin"
Cc: Thomas Gleixner
Cc: Russell King
Cc: Michal Simek
Cc: Ralf Baechle
Cc: "James E.J. Bottomley"
Cc: Helge Deller
Cc: Benjamin Herrenschmidt
Cc: Paul Mackerras
Cc: Michael Ellerman
Cc: "David S. Miller"
Cc: Arnd Bergmann
Cc: Frederic Weisbecker
Cc: Peter Zijlstra
Cc: Will Deacon
Cc: Daniel Borkmann
Cc: Laura Abbott
Cc: James Hogan
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
print_task_path_n_nm() is local to this file, its only user being
show_regs(). Mark the function static and avoid the EXPORT_SYMBOL.Signed-off-by: Davidlohr Bueso
Acked-by: Vineet Gupta
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
It is better to use macros which are already available because then there
is just one location which needs to be change.[akpm@linux-foundation.org: move IS_ENABLED definition to after the IS_BUILTIN and IS_MODULE definitions]
Signed-off-by: Michal Simek
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Using the indenting we can see the curly braces were obviously intended.
This is a static checker fix, but my guess is that we don't read enough
bytes, because we don't calculate "t_len" correctly.Fixes: f1d82698029b ('memstick: use fully asynchronous request processing')
Signed-off-by: Dan Carpenter
Cc: Alex Dubov
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
In case of failed memory allocation, the return should be ENOMEM instead
of ENOSPC.Return -EIO when sb_bread() fails.
Signed-off-by: Sanidhya Kashyap
Cc: Tigran Aivazian
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
This kthread is not loop at all due to break at the end of the loop. Make
that function linear, with no while loop.And remove an unnecessary cast.
Signed-off-by: Jiri Slaby
Cc: Anil Gurumurthy
Cc: James Bottomley
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
There is a possibility of kstrdup() failure upon memory pressure.
Therefore, returning ENOMEM even for new_opts.[akpm@linux-foundation.org: cleanup]
Signed-off-by: Sanidhya Kashyap
Cc: Taesoo kim
Cc: Fabian Frederick
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Replace mount option test by affs_test_opt().
Signed-off-by: Fabian Frederick
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Replace direct mount option assignation by affs_set_opt() macro.
Signed-off-by: Fabian Frederick
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Add clear/set/test affs mount option macros.
Signed-off-by: Fabian Frederick
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Currently, affs still uses direct access on mount_options. This patch
prepares to use affs_clear/set/test_opt() like other filesystems.Signed-off-by: Fabian Frederick
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Fix the wrong values returned by various functions such as EIO and ENOMEM.
Signed-off-by: Sanidhya Kashyap
Cc: Fabian Frederick
Cc: Joe Perches
Cc: Taesoo kim
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
gcov profiling if enabled with other heavy compile-time instrumentation
like KASan could trigger following softlockups:NMI watchdog: BUG: soft lockup - CPU#0 stuck for 22s! [swapper/0:1]
Modules linked in:
irq event stamp: 22823276
hardirqs last enabled at (22823275): [] mutex_lock_nested+0x7d9/0x930
hardirqs last disabled at (22823276): [] apic_timer_interrupt+0x6d/0x80
softirqs last enabled at (22823172): [] __do_softirq+0x4db/0x729
softirqs last disabled at (22823167): [] irq_exit+0x7d/0x15b
CPU: 0 PID: 1 Comm: swapper/0 Tainted: G W 3.19.0-05245-gbb33326-dirty #3
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.7.5.1-0-g8936dbb-20141113_115728-nilsson.home.kraxel.org 04/01/2014
task: ffff88006cba8000 ti: ffff88006cbb0000 task.ti: ffff88006cbb0000
RIP: kasan_mem_to_shadow+0x1e/0x1f
Call Trace:
strcmp+0x28/0x70
get_node_by_name+0x66/0x99
gcov_event+0x4f/0x69e
gcov_enable_events+0x54/0x7b
gcov_fs_init+0xf8/0x134
do_one_initcall+0x1b2/0x288
kernel_init_freeable+0x467/0x580
kernel_init+0x15/0x18b
ret_from_fork+0x7c/0xb0
Kernel panic - not syncing: softlockup: hung tasksFix this by sticking cond_resched() in gcov_enable_events().
Signed-off-by: Andrey Ryabinin
Reported-by: Fengguang Wu
Cc: Peter Oberparleiter
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
When converting unsigned long to int overflows may occur. These currently
are not detected when writing to the sysctl file system.E.g. on a system where int has 32 bits and long has 64 bits
echo 0x800001234 > /proc/sys/kernel/threads-max
has the same effect as
echo 0x1234 > /proc/sys/kernel/threads-maxThe patch adds the missing check in do_proc_dointvec_conv.
With the patch an overflow will result in an error EINVAL when writing to
the the sysctl file system.Signed-off-by: Heinrich Schuchardt
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
cpumask_next_and() is looking for cpumask_next() in src1 in a loop and
tests if found cpu is also present in src2. remove that loop, perform
cpumask_and() of src1 and src2 first and use that new mask to find
cpumask_next().Apart from removing while loop, ./bloat-o-meter on x86_64 shows
add/remove: 0/0 grow/shrink: 0/1 up/down: 0/-8 (-8)
function old new delta
cpumask_next_and 62 54 -8Signed-off-by: Sergey Senozhatsky
Cc: Tejun Heo
Cc: "David S. Miller"
Cc: Amir Vadai
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
