Implement native_read_tsc for 586 and higher.

Signed-off-by: Tim Gardner <tim.gardner@canonical.com>
---
include/asm-x86/msr.h | 7 +++++++
1 files changed, 7 insertions(+), 0 deletions(-)

diff --git a/include/asm-x86/msr.h b/include/asm-x86/msr.h
index 34038c0..c571c6b 100644
--- a/include/asm-x86/msr.h
+++ b/include/asm-x86/msr.h
@@ -225,6 +225,13 @@ static inline int wrmsr_safe_on_cpu(unsigned int cpu, u32 msr_no, u32 l, u32 h)

#define write_rdtscp_aux(val) wrmsr(0xc0000103, val, 0)

+static inline unsigned long long native_read_tsc(void)
+{
+ unsigned long long val;
+ rdtscll(val);
+ return val;
+}
+
#define rdpmc(counter,low,high)
__asm__ __volatile__("rdpmc"
: "=a" (low), "=d" (high)
--
1.5.4.3


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