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| author | Tejun Heo <tj@kernel.org> | 2010-09-10 10:49:37 +0200 |
|---|---|---|
| committer | Tejun Heo <tj@kernel.org> | 2010-09-10 10:56:24 +0200 |
| commit | fc1481a956181d0360d3eb129965302489895a1b (patch) | |
| tree | 425b30a6acc526067a2754840d95ddefed780166 /mm/percpu-km.c | |
| parent | 3c9a024fde58b08745680863859d1483def64f74 (diff) | |
| download | lwn-fc1481a956181d0360d3eb129965302489895a1b.tar.gz lwn-fc1481a956181d0360d3eb129965302489895a1b.zip | |
percpu: clear memory allocated with the km allocator
Percpu allocator should clear memory before returning it but the km
allocator forgot to do it. Fix it.
Signed-off-by: Tejun Heo <tj@kernel.org>
Reported-by: Peter Zijlstra <peterz@infradead.org>
Acked-by: Peter Zijlstra <peterz@infradead.org>
Diffstat (limited to 'mm/percpu-km.c')
| -rw-r--r-- | mm/percpu-km.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/mm/percpu-km.c b/mm/percpu-km.c index 7037bc73bfa4..89633fefc6a2 100644 --- a/mm/percpu-km.c +++ b/mm/percpu-km.c @@ -35,7 +35,11 @@ static int pcpu_populate_chunk(struct pcpu_chunk *chunk, int off, int size) { - /* noop */ + unsigned int cpu; + + for_each_possible_cpu(cpu) + memset((void *)pcpu_chunk_addr(chunk, cpu, 0) + off, 0, size); + return 0; } |