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oprofile: don't request cache line alignment for cpu_buffer

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Alignment was previously requested because cpu_buffer was an [NR_CPUS]
array, to avoid cache line sharing between CPUS.

After commit 608dfddd84 (oprofile: change
cpu_buffer from array to per_cpu variable ), we dont need to force an
alignement anymore since cpu_buffer sits in per_cpu zone.

Signed-off-by: Eric Dumazet <dada1@cosmosbay.com>
Cc: Mike Travis <travis@sgi.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Eric Dumazet 2008-05-14 16:05:31 -07:00 committed by Linus Torvalds
parent f7c5a770e6
commit 8b8b498836
2 changed files with 2 additions and 2 deletions
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2
drivers/oprofile/cpu_buffer.c
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@ -27,7 +27,7 @@
#include "buffer_sync.h"
#include "oprof.h"
DEFINE_PER_CPU_SHARED_ALIGNED(struct oprofile_cpu_buffer, cpu_buffer);
DEFINE_PER_CPU(struct oprofile_cpu_buffer, cpu_buffer);
static void wq_sync_buffer(struct work_struct *work);

2
drivers/oprofile/cpu_buffer.h
View file

@ -46,7 +46,7 @@ struct oprofile_cpu_buffer {
unsigned long sample_invalid_eip;
int cpu;
struct delayed_work work;
} ____cacheline_aligned;
};
DECLARE_PER_CPU(struct oprofile_cpu_buffer, cpu_buffer);