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 --- Changes in v2: None
arch/arm/cpu/armv7/s5p-common/timer.c | 2 +- arch/arm/include/asm/arch-exynos/cpu.h | 10 ++++++---- 2 files changed, 7 insertions(+), 5 deletions(-)
diff --git a/arch/arm/cpu/armv7/s5p-common/timer.c b/arch/arm/cpu/armv7/s5p-common/timer.c index 4adfaae..637593c 100644 --- a/arch/arm/cpu/armv7/s5p-common/timer.c +++ b/arch/arm/cpu/armv7/s5p-common/timer.c @@ -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;
diff --git a/arch/arm/include/asm/arch-exynos/cpu.h b/arch/arm/include/asm/arch-exynos/cpu.h index f76e489..6b1b54f 100644 --- a/arch/arm/include/asm/arch-exynos/cpu.h +++ b/arch/arm/include/asm/arch-exynos/cpu.h @@ -175,7 +175,7 @@ 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; \ } @@ -184,7 +184,8 @@ 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; \ } @@ -194,9 +195,10 @@ 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; \