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| author | Vegard Nossum <vegard.nossum@oracle.com> | 2017-02-27 23:30:10 +0100 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2017-02-28 03:43:48 +0100 |
| commit | 3fce371bfac2be0396ffc1e763600e6c6b1bb52a (patch) | |
| tree | da45267ba334ada341aa13d600848299564751ce /arch/xtensa/kernel/smp.c | |
| parent | mm: add new mmgrab() helper (diff) | |
| download | linux-3fce371bfac2be0396ffc1e763600e6c6b1bb52a.tar.xz linux-3fce371bfac2be0396ffc1e763600e6c6b1bb52a.zip | |
mm: add new mmget() helper
Apart from adding the helper function itself, the rest of the kernel is
converted mechanically using:
git grep -l 'atomic_inc.*mm_users' | xargs sed -i 's/atomic_inc(&\(.*\)->mm_users);/mmget\(\1\);/'
git grep -l 'atomic_inc.*mm_users' | xargs sed -i 's/atomic_inc(&\(.*\)\.mm_users);/mmget\(\&\1\);/'
This is needed for a later patch that hooks into the helper, but might
be a worthwhile cleanup on its own.
(Michal Hocko provided most of the kerneldoc comment.)
Link: http://lkml.kernel.org/r/20161218123229.22952-2-vegard.nossum@oracle.com
Signed-off-by: Vegard Nossum <vegard.nossum@oracle.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: David Rientjes <rientjes@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/xtensa/kernel/smp.c')
| -rw-r--r-- | arch/xtensa/kernel/smp.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/xtensa/kernel/smp.c b/arch/xtensa/kernel/smp.c index 9bf5cea3bae4..fcea72019df7 100644 --- a/arch/xtensa/kernel/smp.c +++ b/arch/xtensa/kernel/smp.c @@ -135,7 +135,7 @@ void secondary_start_kernel(void) /* All kernel threads share the same mm context. */ - atomic_inc(&mm->mm_users); + mmget(mm); mmgrab(mm); current->active_mm = mm; cpumask_set_cpu(cpu, mm_cpumask(mm)); |