| Message ID | 20190603091402.25115-1-anders.roxell@linaro.org (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | [1/3] clocksource/arm_arch_timer: mark arch_counter_get_* as notrace | expand |
On Mon, Jun 03, 2019 at 11:14:02AM +0200, Anders Roxell wrote: > If CONFIG_FUNCTION_GRAPH_TRACER is enabled function > arch_counter_get_cntvct() is marked as notrace. However, function > __arch_counter_get_cntvct is marked as inline. If > CONFIG_OPTIMIZE_INLINING is set that will make the two functions > tracable which they shouldn't. > > Rework so that functions __arch_counter_get_* are marked with > __always_inline so they will be inlined even if CONFIG_OPTIMIZE_INLINING > is turned on. > > Fixes: 0ea415390cd3 ("clocksource/arm_arch_timer: Use arch_timer_read_counter to access stable counters") > Signed-off-by: Anders Roxell <anders.roxell@linaro.org> > --- > arch/arm64/include/asm/arch_timer.h | 8 ++++---- > 1 file changed, 4 insertions(+), 4 deletions(-) I can pick this up if Marc is happy with it. Will
On 05/06/2019 12:56, Will Deacon wrote: > On Mon, Jun 03, 2019 at 11:14:02AM +0200, Anders Roxell wrote: >> If CONFIG_FUNCTION_GRAPH_TRACER is enabled function >> arch_counter_get_cntvct() is marked as notrace. However, function >> __arch_counter_get_cntvct is marked as inline. If >> CONFIG_OPTIMIZE_INLINING is set that will make the two functions >> tracable which they shouldn't. >> >> Rework so that functions __arch_counter_get_* are marked with >> __always_inline so they will be inlined even if CONFIG_OPTIMIZE_INLINING >> is turned on. >> >> Fixes: 0ea415390cd3 ("clocksource/arm_arch_timer: Use arch_timer_read_counter to access stable counters") >> Signed-off-by: Anders Roxell <anders.roxell@linaro.org> >> --- >> arch/arm64/include/asm/arch_timer.h | 8 ++++---- >> 1 file changed, 4 insertions(+), 4 deletions(-) > > I can pick this up if Marc is happy with it. Yup, looks good to me. Please add my Acked-by: Marc Zyngier <marc.zyngier@arm.com> M.
diff --git a/arch/arm64/include/asm/arch_timer.h b/arch/arm64/include/asm/arch_timer.h index b7bca1ae09e6..50b3ab7ded4f 100644 --- a/arch/arm64/include/asm/arch_timer.h +++ b/arch/arm64/include/asm/arch_timer.h @@ -193,7 +193,7 @@ static inline void arch_timer_set_cntkctl(u32 cntkctl) : "=r" (tmp) : "r" (_val)); \ } while (0) -static inline u64 __arch_counter_get_cntpct_stable(void) +static __always_inline u64 __arch_counter_get_cntpct_stable(void) { u64 cnt; @@ -203,7 +203,7 @@ static inline u64 __arch_counter_get_cntpct_stable(void) return cnt; } -static inline u64 __arch_counter_get_cntpct(void) +static __always_inline u64 __arch_counter_get_cntpct(void) { u64 cnt; @@ -213,7 +213,7 @@ static inline u64 __arch_counter_get_cntpct(void) return cnt; } -static inline u64 __arch_counter_get_cntvct_stable(void) +static __always_inline u64 __arch_counter_get_cntvct_stable(void) { u64 cnt; @@ -223,7 +223,7 @@ static inline u64 __arch_counter_get_cntvct_stable(void) return cnt; } -static inline u64 __arch_counter_get_cntvct(void) +static __always_inline u64 __arch_counter_get_cntvct(void) { u64 cnt;
If CONFIG_FUNCTION_GRAPH_TRACER is enabled function arch_counter_get_cntvct() is marked as notrace. However, function __arch_counter_get_cntvct is marked as inline. If CONFIG_OPTIMIZE_INLINING is set that will make the two functions tracable which they shouldn't. Rework so that functions __arch_counter_get_* are marked with __always_inline so they will be inlined even if CONFIG_OPTIMIZE_INLINING is turned on. Fixes: 0ea415390cd3 ("clocksource/arm_arch_timer: Use arch_timer_read_counter to access stable counters") Signed-off-by: Anders Roxell <anders.roxell@linaro.org> --- arch/arm64/include/asm/arch_timer.h | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-)