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x86: Support tracing function

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Some changes are needed to x86 timer functions to support tracing. Add
these so that the feature works correctly.

Signed-off-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Simon Glass 2013-06-11 11:14:52 -07:00 • committed by Tom Rini
parent 5b7dcf3112
commit d8819f94d5
5 changed files with 10 additions and 7 deletions
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2
arch/x86/include/asm/u-boot-x86.h
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@ -64,7 +64,7 @@ void board_init_f_r_trampoline(ulong) __attribute__ ((noreturn));
void board_init_f_r(void) __attribute__ ((noreturn));
/* Read the time stamp counter */
static inline uint64_t rdtsc(void)
static inline __attribute__((no_instrument_function)) uint64_t rdtsc(void)
{
uint32_t high, low;
__asm__ __volatile__("rdtsc" : "=a" (low), "=d" (high));