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exynos: Avoid function instrumentation for microsecond timer

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For tracing to work it has to be able to access the microsecond timer
without causing a recursive call to the function entry/exit handlers.
Add attributes to the relevant functions to support this.

Signed-off-by: Simon Glass <sjg@chromium.org>

Signed-off-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Simon Glass 2013-06-11 11:14:50 -07:00 committed by Tom Rini
parent bce1b92aa1
commit ca35a0cdf2
2 changed files with 7 additions and 5 deletions
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2
arch/arm/cpu/armv7/s5p-common/timer.c
View File

@ -95,7 +95,7 @@ unsigned long get_timer(unsigned long base)
return time_ms - base;
}
unsigned long timer_get_us(void)
unsigned long __attribute__((no_instrument_function)) timer_get_us(void)
{
static unsigned long base_time_us;

10
arch/arm/include/asm/arch-exynos/cpu.h
View File

@ -178,7 +178,7 @@ static inline char *s5p_get_cpu_name(void)
}
#define IS_SAMSUNG_TYPE(type, id) \
static inline int cpu_is_##type(void) \
static inline int __attribute__((no_instrument_function)) cpu_is_##type(void) \
{ \
return (s5p_cpu_id >> 12) == id; \
}
@ -187,7 +187,8 @@ IS_SAMSUNG_TYPE(exynos4, 0x4)
IS_SAMSUNG_TYPE(exynos5, 0x5)
#define IS_EXYNOS_TYPE(type, id) \
static inline int proid_is_##type(void) \
static inline int __attribute__((no_instrument_function)) \
proid_is_##type(void) \
{ \
return s5p_cpu_id == id; \
}
@ -197,9 +198,10 @@ IS_EXYNOS_TYPE(exynos4412, 0x4412)
IS_EXYNOS_TYPE(exynos5250, 0x5250)
#define SAMSUNG_BASE(device, base) \
static inline unsigned int samsung_get_base_##device(void) \
static inline unsigned int __attribute__((no_instrument_function)) \
samsung_get_base_##device(void) \
{ \
if (cpu_is_exynos4()) { \
if (cpu_is_exynos4()) { \
if (proid_is_exynos4412()) \
return EXYNOS4X12_##base; \
return EXYNOS4_##base; \