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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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6
arch/x86/lib/tsc_timer.c
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@ -37,7 +37,7 @@ void timer_set_base(u64 base)
* restart. This yields a free running counter guaranteed to take almost 6
* years to wrap around even at 100GHz clock rate.
*/
u64 get_ticks(void)
u64 __attribute__((no_instrument_function)) get_ticks(void)
{
u64 now_tick = rdtsc();
@ -50,7 +50,7 @@ u64 get_ticks(void)
#define PLATFORM_INFO_MSR 0xce
/* Get the speed of the TSC timer in MHz */
unsigned long get_tbclk_mhz(void)
unsigned __attribute__((no_instrument_function)) long get_tbclk_mhz(void)
{
u32 ratio;
u64 platform_info = native_read_msr(PLATFORM_INFO_MSR);
@ -75,7 +75,7 @@ ulong get_timer(ulong base)
return get_ms_timer() - base;
}
ulong timer_get_us(void)
ulong __attribute__((no_instrument_function)) timer_get_us(void)
{
return get_ticks() / get_tbclk_mhz();
}