[PATCH] Don't use lock section for mutexes and semaphores

Lock sections cannot be handled by the dwarf2 unwinder.

Disadvantage is a taken branch in the hot path.

Signed-off-by: Andi Kleen <ak@suse.de>

1 files changed, 4 insertions, 5 deletions

diff --git a/include/asm-x86_64/spinlock.h b/include/asm-x86_64/spinlock.h
index a8e3d89f591f..1d0733b38a4b 100644
--- a/include/asm-x86_64/spinlock.h
+++ b/include/asm-x86_64/spinlock.h
@@ -22,14 +22,13 @@
 #define __raw_spin_lock_string \
         "\n1:\t" \
         LOCK_PREFIX " ; decl %0\n\t" \
-        "js 2f\n" \
-        LOCK_SECTION_START("") \
-        "2:\t" \
+        "jns 2f\n" \
+        "3:\n" \
         "rep;nop\n\t" \
         "cmpl $0,%0\n\t" \
-        "jle 2b\n\t" \
+        "jle 3b\n\t" \
         "jmp 1b\n" \
-        LOCK_SECTION_END
+        "2:\t" \
 
 #define __raw_spin_lock_string_up \
         "\n\tdecl %0"