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Add SCHED_INSTRUMENTATION_HIRES support

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This commit is contained in:
Nakamura, Yuuichi 2020-09-03 15:18:12 +09:00 committed by Xiang Xiao
parent e1b9c278f8
commit d8d19911ef
4 changed files with 34 additions and 0 deletions
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4
Documentation/guides/tasktraceuser.rst
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@ -53,6 +53,10 @@ The following configurations are configurable parameters for trace.
- If enabled, stop overwriting old notes in the circular buffer when the buffer is full by default.
This is useful to keep instrumentation data of the beginning of a system boot.
- ``CONFIG_SCHED_INSTRUMENTATION_HIRES``
- If enabled, use higher resolution system timer for instrumentation.
After the configuration, rebuild the NuttX kernel and application.
If the trace function is enabled, "``trace``" :doc:`../components/nsh/builtin` will be available.

6
include/nuttx/sched_note.h
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@ -160,7 +160,13 @@ struct note_common_s
uint8_t nc_cpu; /* CPU thread/task running on */
#endif
uint8_t nc_pid[2]; /* ID of the thread/task */
#ifdef CONFIG_SCHED_INSTRUMENTATION_HIRES
uint8_t nc_systime_sec[4]; /* Time when note was buffered (sec) */
uint8_t nc_systime_nsec[4]; /* Time when note was buffered (nsec) */
#else
uint8_t nc_systime[4]; /* Time when note was buffered */
#endif
};
/* This is the specific form of the NOTE_START note */

6
sched/Kconfig
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@ -990,6 +990,12 @@ config SCHED_INSTRUMENTATION_IRQHANDLER
void sched_note_irqhandler(int irq, FAR void *handler, bool enter);
config SCHED_INSTRUMENTATION_HIRES
bool "Use Hi-Res RTC for instrumentation"
default n
---help---
Use higher resolution system timer for instrumentation.
config SCHED_INSTRUMENTATION_FILTER
bool "Instrumenation filter"
default n

18
sched/sched/sched_note.c
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@ -29,6 +29,7 @@
#include <string.h>
#include <assert.h>
#include <errno.h>
#include <time.h>
#include <nuttx/irq.h>
#include <nuttx/sched.h>
@ -117,7 +118,13 @@ static void note_common(FAR struct tcb_s *tcb,
FAR struct note_common_s *note,
uint8_t length, uint8_t type)
{
#ifdef CONFIG_SCHED_INSTRUMENTATION_HIRES
struct timespec ts;
clock_systime_timespec(&ts);
#else
uint32_t systime = (uint32_t)clock_systime_ticks();
#endif
/* Save all of the common fields */
@ -130,12 +137,23 @@ static void note_common(FAR struct tcb_s *tcb,
note->nc_pid[0] = (uint8_t)(tcb->pid & 0xff);
note->nc_pid[1] = (uint8_t)((tcb->pid >> 8) & 0xff);
#ifdef CONFIG_SCHED_INSTRUMENTATION_HIRES
note->nc_systime_nsec[0] = (uint8_t)(ts.tv_nsec & 0xff);
note->nc_systime_nsec[1] = (uint8_t)((ts.tv_nsec >> 8) & 0xff);
note->nc_systime_nsec[2] = (uint8_t)((ts.tv_nsec >> 16) & 0xff);
note->nc_systime_nsec[3] = (uint8_t)((ts.tv_nsec >> 24) & 0xff);
note->nc_systime_sec[0] = (uint8_t)(ts.tv_sec & 0xff);
note->nc_systime_sec[1] = (uint8_t)((ts.tv_sec >> 8) & 0xff);
note->nc_systime_sec[2] = (uint8_t)((ts.tv_sec >> 16) & 0xff);
note->nc_systime_sec[3] = (uint8_t)((ts.tv_sec >> 24) & 0xff);
#else
/* Save the LS 32-bits of the system timer in little endian order */
note->nc_systime[0] = (uint8_t)(systime & 0xff);
note->nc_systime[1] = (uint8_t)((systime >> 8) & 0xff);
note->nc_systime[2] = (uint8_t)((systime >> 16) & 0xff);
note->nc_systime[3] = (uint8_t)((systime >> 24) & 0xff);
#endif
}
/****************************************************************************