x86: convert rdtscll() to use __native_read_tsc
Impact: micro-optimization
Is there any reason why x86 rdtscll have to use the out of line
function instead of inline __native_read_tsc()? native_read_tsc and
__native_read_tsc is essentially the same functions.
Patch to let x86 rdtscll() to use the inline version of read_tsc.
Signed-off-by: Ken Chen <kenchen@google.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
diff --git a/arch/x86/include/asm/msr.h b/arch/x86/include/asm/msr.h
index c2a812e..42f639b 100644
--- a/arch/x86/include/asm/msr.h
+++ b/arch/x86/include/asm/msr.h
@@ -181,10 +181,10 @@
}
#define rdtscl(low) \
- ((low) = (u32)native_read_tsc())
+ ((low) = (u32)__native_read_tsc())
#define rdtscll(val) \
- ((val) = native_read_tsc())
+ ((val) = __native_read_tsc())
#define rdpmc(counter, low, high) \
do { \