path: root/kernel/spinlock.c
diff options
authorAndi Kleen <ak@suse.de>2006-09-26 10:52:28 +0200
committerAndi Kleen <andi@basil.nowhere.org>2006-09-26 10:52:28 +0200
commit0cb91a2293648507886563ccb91979cfc94d6a4b (patch)
treef2a994f8b874e3c81c5519d445a0c5fa5522e4b5 /kernel/spinlock.c
parentc16b63e09d9d03158e0a92e961234e94c4862620 (diff)
[PATCH] i386: Account spinlocks to the caller during profiling for !FP kernels
This ports the algorithm from x86-64 (with improvements) to i386. Previously this only worked for frame pointer enabled kernels. But spinlocks have a very simple stack frame that can be manually analyzed. Do this. Signed-off-by: Andi Kleen <ak@suse.de>
Diffstat (limited to 'kernel/spinlock.c')
1 files changed, 5 insertions, 0 deletions
diff --git a/kernel/spinlock.c b/kernel/spinlock.c
index fb524b009eef..9644a41e0bef 100644
--- a/kernel/spinlock.c
+++ b/kernel/spinlock.c
@@ -7,6 +7,11 @@
* This file contains the spinlock/rwlock implementations for the
* SMP and the DEBUG_SPINLOCK cases. (UP-nondebug inlines them)
+ *
+ * Note that some architectures have special knowledge about the
+ * stack frames of these functions in their profile_pc. If you
+ * change anything significant here that could change the stack
+ * frame contact the architecture maintainers.
#include <linux/linkage.h>

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