exynos: Avoid function instrumentation for microsecond timer
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>
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 @@
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 36b98c8..1ff7642 100644
--- a/arch/arm/include/asm/arch-exynos/cpu.h
+++ b/arch/arm/include/asm/arch-exynos/cpu.h
@@ -178,7 +178,7 @@
}
#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(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(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; \