Messages in this thread Patch in this message | | | Date | Sun, 01 Mar 2009 16:13:00 +0900 | From | Tejun Heo <> | Subject | [PATCH tj-percpu 1/3] percpu: kill compile warning in pcpu_populate_chunk() |
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Impact: remove compile warning
Mark local variable map_end in pcpu_populate_chunk() with uninitialized_var(). The variable is always used in tandem with map_start and guaranteed to be initialized before use but gcc doesn't understand that.
Signed-off-by: Tejun Heo <tj@kernel.org> Reported-by: Ingo Molnar <mingo@elte.hu> --- This the first of three misc fix patches for #tj-percpu. Patches are also available in the tj-percpu git tree.
git://git.kernel.org/pub/scm/linux/kernel/git/tj/misc.git tj-percpu
Thanks.
mm/percpu.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/mm/percpu.c b/mm/percpu.c index 5954e7a..3d0f545 100644 --- a/mm/percpu.c +++ b/mm/percpu.c @@ -639,7 +639,7 @@ static int pcpu_populate_chunk(struct pcpu_chunk *chunk, int off, int size) int page_start = PFN_DOWN(off); int page_end = PFN_UP(off + size); int map_start = -1; - int map_end; + int uninitialized_var(map_end); unsigned int cpu; int i; -- 1.6.0.2
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