linux-kernel - [PATCH] kernel, profile: Remove some duplicate code from profile

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Date:	Wed, 27 Apr 2011 23:00:35 +0600
From:	Rakib Mullick <rakib.mullick@...il.com>
To:	linux-kernel@...r.kernel.org
Cc:	Ingo Molnar <mingo@...e.hu>,
	Andrew Morton <akpm@...ux-foundation.org>
Subject: [PATCH] kernel, profile: 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.

Signed-off-by: Rakib Mullick <rakib.mullick@...il.com>
---

diff --git a/kernel/profile.c b/kernel/profile.c
index 14c9f87..185e648 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)
+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)
+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)


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