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arch: Add up_perf_getfreq function

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it's important to know the perf count frequency

Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
This commit is contained in:
Xiang Xiao 2022-01-26 02:07:43 +08:00 • committed by Alan Carvalho de Assis
parent 8be9cb9f72
commit ecccc614bd
5 changed files with 29 additions and 0 deletions
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9
boards/arm/stm32/omnibusf4/src/stm32_perfcount.c
View file

@ -47,6 +47,15 @@ uint32_t up_perf_gettime(void)
return getreg32(DWT_CYCCNT);
}
/****************************************************************************
* Name: up_perf_getfreq
****************************************************************************/
uint32_t up_perf_getfreq(void)
{
return STM32_SYSCLK_FREQUENCY;
}
/****************************************************************************
* Name: up_perf_convert
****************************************************************************/

9
boards/arm/stm32/stm32f4discovery/src/stm32_perfcount.c
View file

@ -47,6 +47,15 @@ uint32_t up_perf_gettime(void)
return getreg32(DWT_CYCCNT);
}
/****************************************************************************
* Name: up_perf_getfreq
****************************************************************************/
uint32_t up_perf_getfreq(void)
{
return STM32_SYSCLK_FREQUENCY;
}
/****************************************************************************
* Name: up_perf_convert
****************************************************************************/

5
drivers/timers/arch_alarm.c
View file

@ -388,6 +388,11 @@ uint32_t weak_function up_perf_gettime(void)
return ret;
}
uint32_t weak_function up_perf_getfreq(void)
{
return USEC_PER_SEC;
}
void weak_function up_perf_convert(uint32_t elapsed, FAR struct timespec *ts)
{
timespec_from_usec(ts, elapsed);

5
drivers/timers/arch_timer.c
View file

@ -437,6 +437,11 @@ uint32_t weak_function up_perf_gettime(void)
return ret;
}
uint32_t weak_function up_perf_getfreq(void)
{
return USEC_PER_SEC;
}
void weak_function up_perf_convert(uint32_t elapsed, FAR struct timespec *ts)
{
timespec_from_usec(ts, elapsed);

1
include/nuttx/arch.h
View file

@ -2577,6 +2577,7 @@ void arch_sporadic_resume(FAR struct tcb_s *tcb);
****************************************************************************/
uint32_t up_perf_gettime(void);
uint32_t up_perf_getfreq(void);
void up_perf_convert(uint32_t elapsed, FAR struct timespec *ts);
#undef EXTERN