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| author | Tejun Heo <tj@kernel.org> | 2010-09-10 11:01:56 +0200 |
|---|---|---|
| committer | Tejun Heo <tj@kernel.org> | 2010-09-10 11:01:56 +0200 |
| commit | 9329ba9704f6bd51a735982e0d4a3eed72c3294f (patch) | |
| tree | 8524ba7a84d5306d6fde91552655b10b0d06da61 /mm/percpu.c | |
| parent | percpu: Optimize __get_cpu_var() (diff) | |
| download | linux-9329ba9704f6bd51a735982e0d4a3eed72c3294f.tar.xz linux-9329ba9704f6bd51a735982e0d4a3eed72c3294f.zip | |
percpu: update comments to reflect that percpu allocations are always zero-filled
Signed-off-by: Tejun Heo <tj@kernel.org>
Reported-by: Stephane Eranian <eranian@google.com>
Diffstat (limited to 'mm/percpu.c')
| -rw-r--r-- | mm/percpu.c | 11 |
1 files changed, 6 insertions, 5 deletions
diff --git a/mm/percpu.c b/mm/percpu.c index 0cd4bf61012c..12dea33572bd 100644 --- a/mm/percpu.c +++ b/mm/percpu.c @@ -826,8 +826,8 @@ fail_unlock_mutex: * @size: size of area to allocate in bytes * @align: alignment of area (max PAGE_SIZE) * - * Allocate percpu area of @size bytes aligned at @align. Might - * sleep. Might trigger writeouts. + * Allocate zero-filled percpu area of @size bytes aligned at @align. + * Might sleep. Might trigger writeouts. * * CONTEXT: * Does GFP_KERNEL allocation. @@ -846,9 +846,10 @@ EXPORT_SYMBOL_GPL(__alloc_percpu); * @size: size of area to allocate in bytes * @align: alignment of area (max PAGE_SIZE) * - * Allocate percpu area of @size bytes aligned at @align from reserved - * percpu area if arch has set it up; otherwise, allocation is served - * from the same dynamic area. Might sleep. Might trigger writeouts. + * Allocate zero-filled percpu area of @size bytes aligned at @align + * from reserved percpu area if arch has set it up; otherwise, + * allocation is served from the same dynamic area. Might sleep. + * Might trigger writeouts. * * CONTEXT: * Does GFP_KERNEL allocation. |