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| author | Rakib Mullick <rakib.mullick@gmail.com> | 2011-05-26 16:26:00 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2011-05-26 17:12:37 -0700 |
| commit | 6f7bd76f05eb2bfbb48d58c0408a50a7e16b2423 (patch) | |
| tree | a6a5c66d200e112cc629b392eafbaa026e1c57bf /kernel/profile.c | |
| parent | d98808a253f209465ed9f415c565f4c294a213b8 (diff) | |
| download | lwn-6f7bd76f05eb2bfbb48d58c0408a50a7e16b2423.tar.gz lwn-6f7bd76f05eb2bfbb48d58c0408a50a7e16b2423.zip | |
kernel/profile.c: remove some duplicate code from profile_hits()
profile_hits() has a common check for prof_on and prof_buffer regardless
of SMP or !SMP. So, remove some duplicate code by splitting profile_hits
into two.
[akpm@linux-foundation.org: make do_profile_hits static]
Signed-off-by: Rakib Mullick <rakib.mullick@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'kernel/profile.c')
| -rw-r--r-- | kernel/profile.c | 16 |
1 files changed, 9 insertions, 7 deletions
diff --git a/kernel/profile.c b/kernel/profile.c index 14c9f87b9fc9..961b389fe52f 100644 --- a/kernel/profile.c +++ b/kernel/profile.c @@ -303,14 +303,12 @@ static void profile_discard_flip_buffers(void) mutex_unlock(&profile_flip_mutex); } -void profile_hits(int type, void *__pc, unsigned int nr_hits) +static void do_profile_hits(int type, void *__pc, unsigned int nr_hits) { unsigned long primary, secondary, flags, pc = (unsigned long)__pc; int i, j, cpu; struct profile_hit *hits; - if (prof_on != type || !prof_buffer) - return; pc = min((pc - (unsigned long)_stext) >> prof_shift, prof_len - 1); i = primary = (pc & (NR_PROFILE_GRP - 1)) << PROFILE_GRPSHIFT; secondary = (~(pc << 1) & (NR_PROFILE_GRP - 1)) << PROFILE_GRPSHIFT; @@ -417,16 +415,20 @@ out_free: #define profile_discard_flip_buffers() do { } while (0) #define profile_cpu_callback NULL -void profile_hits(int type, void *__pc, unsigned int nr_hits) +static void do_profile_hits(int type, void *__pc, unsigned int nr_hits) { unsigned long pc; - - if (prof_on != type || !prof_buffer) - return; pc = ((unsigned long)__pc - (unsigned long)_stext) >> prof_shift; atomic_add(nr_hits, &prof_buffer[min(pc, prof_len - 1)]); } #endif /* !CONFIG_SMP */ + +void profile_hits(int type, void *__pc, unsigned int nr_hits) +{ + if (prof_on != type || !prof_buffer) + return; + do_profile_hits(type, __pc, nr_hits); +} EXPORT_SYMBOL_GPL(profile_hits); void profile_tick(int type) |