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authorAndi Kleen <ak@suse.de>2005-04-16 15:25:01 -0700
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:25:01 -0700
commit36c1104e309fe93375e67cdbdb2a980f23965f3b (patch)
tree8efee0a8cbc23668bd9735b67e2674c64914a56c /arch
parentd61915da63e2ef03d9034e3b2ec7d8cca55d7584 (diff)
downloadop-kernel-dev-36c1104e309fe93375e67cdbdb2a980f23965f3b.zip
op-kernel-dev-36c1104e309fe93375e67cdbdb2a980f23965f3b.tar.gz
[PATCH] x86_64: Minor microoptimization in syscall entry slow path
Minor microoptimization in syscall entry slow path Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'arch')
-rw-r--r--arch/x86_64/kernel/entry.S4
1 files changed, 1 insertions, 3 deletions
diff --git a/arch/x86_64/kernel/entry.S b/arch/x86_64/kernel/entry.S
index e126284..053d6e8 100644
--- a/arch/x86_64/kernel/entry.S
+++ b/arch/x86_64/kernel/entry.S
@@ -302,9 +302,7 @@ int_very_careful:
leaq 8(%rsp),%rdi # &ptregs -> arg1
call syscall_trace_leave
popq %rdi
- btr $TIF_SYSCALL_TRACE,%edi
- btr $TIF_SYSCALL_AUDIT,%edi
- btr $TIF_SINGLESTEP,%edi
+ andl $~(_TIF_SYSCALL_TRACE|_TIF_SYSCALL_AUDIT|_TIF_SINGLESTEP),%edi
jmp int_restore_rest
int_signal:
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