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Code Issues Releases Wiki Activity

sched/note: add support of trace section mark 

The implementation of this feature is based on android systrace:

https://source.android.com/devices/tech/debug/ftrace

Application developers are more concerned about the performance of
the specified application section,
added two APIs to implement performance measurement:

void sched_note_begin(uintptr_t ip, FAR const char *buf);
void sched_note_end(uintptr_t ip, FAR const char *buf);
or
SCHED_NOTE_BEGIN();  /* defined to sched_note_begin(_THIS_IP_, __FUNCTION__) */
SCHED_NOTE_END();    /* defined to sched_note_end(_THIS_IP_, __FUNCTION__) */

Signed-off-by: chao.an <anchao@xiaomi.com>
This commit is contained in:
chao.an 2022-03-31 18:16:20 +08:00 committed by Xiang Xiao
parent e05f64735f
commit 6e0ba2bed5
2 changed files with 22 additions and 0 deletions
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12
include/nuttx/sched_note.h
View File

@ -124,6 +124,10 @@
sched_note_printf(SCHED_NOTE_IP, fmt, ##args)
# define SCHED_NOTE_BPRINTF(event, fmt, args...) \
sched_note_bprintf(SCHED_NOTE_IP, event, fmt, ##args)
# define SCHED_NOTE_BEGIN() \
sched_note_begin(SCHED_NOTE_IP, __FUNCTION__)
# define SCHED_NOTE_END() \
sched_note_end(SCHED_NOTE_IP, __FUNCTION__)
#else
# define SCHED_NOTE_STRING(buf)
# define SCHED_NOTE_DUMP(event, buf, len)
@ -131,6 +135,8 @@
# define SCHED_NOTE_VBPRINTF(event, fmt, va)
# define SCHED_NOTE_PRINTF(fmt, args...)
# define SCHED_NOTE_BPRINTF(event, fmt, args...)
# define SCHED_NOTE_BEGIN()
# define SCHED_NOTE_END()
#endif
/****************************************************************************
@ -538,6 +544,8 @@ void sched_note_printf(uintptr_t ip,
FAR const char *fmt, ...) printflike(2, 3);
void sched_note_bprintf(uintptr_t ip, uint8_t event,
FAR const char *fmt, ...) printflike(3, 4);
void sched_note_begin(uintptr_t ip, FAR const char *buf);
void sched_note_end(uintptr_t ip, FAR const char *buf);
#else
# define sched_note_string(ip,b)
# define sched_note_dump(ip,e,b,l)
@ -545,6 +553,8 @@ void sched_note_bprintf(uintptr_t ip, uint8_t event,
# define sched_note_vbprintf(ip,e,f,v)
# define sched_note_printf(ip,f...)
# define sched_note_bprintf(ip,e,f...)
# define sched_note_begin(ip,f...)
# define sched_note_end(ip,f...)
#endif /* CONFIG_SCHED_INSTRUMENTATION_DUMP */
#if defined(__KERNEL__) || defined(CONFIG_BUILD_FLAT)
@ -675,6 +685,8 @@ void sched_note_filter_irq(struct note_filter_irq_s *oldf,
# define sched_note_vbprintf(ip,e,f,v)
# define sched_note_printf(ip,f...)
# define sched_note_bprintf(ip,e,f...)
# define sched_note_begin(ip,f...)
# define sched_note_end(ip,f...)
#endif /* CONFIG_SCHED_INSTRUMENTATION */
#endif /* __INCLUDE_NUTTX_SCHED_NOTE_H */

10
sched/sched/sched_note.c
View File

@ -1184,6 +1184,16 @@ void sched_note_bprintf(uintptr_t ip, uint8_t event,
sched_note_vbprintf(ip, event, fmt, va);
va_end(va);
}
void sched_note_begin(uintptr_t ip, FAR const char *buf)
{
sched_note_printf(ip, "B|%d|%s", getpid(), buf);
}
void sched_note_end(uintptr_t ip, FAR const char *buf)
{
sched_note_printf(ip, "E|%d|%s", getpid(), buf);
}
#endif /* CONFIG_SCHED_INSTRUMENTATION_DUMP */
#ifdef CONFIG_SCHED_INSTRUMENTATION_FILTER