[PATCH 2/4] powerpc: Remove static branch prediction in 64bit traced syscall path
Anton Blanchard
anton at samba.org
Wed Jan 9 10:47:36 EST 2013
Some distros enable auditing by default which forces us through the
syscall trace path. Remove the static branch prediction in our 64bit
syscall handler and let the hardware do the prediction.
Signed-off-by: Anton Blanchard <anton at samba.org>
---
Index: b/arch/powerpc/kernel/entry_64.S
===================================================================
--- a/arch/powerpc/kernel/entry_64.S
+++ b/arch/powerpc/kernel/entry_64.S
@@ -149,7 +149,7 @@ END_FW_FTR_SECTION_IFSET(FW_FEATURE_SPLP
CURRENT_THREAD_INFO(r11, r1)
ld r10,TI_FLAGS(r11)
andi. r11,r10,_TIF_SYSCALL_T_OR_A
- bne- syscall_dotrace
+ bne syscall_dotrace
.Lsyscall_dotrace_cont:
cmpldi 0,r0,NR_syscalls
bge- syscall_enosys
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