note: correct systime with perf count

Signed-off-by: yinshengkai <yinshengkai@xiaomi.com>

drivers/note/note_driver.c

@@ -223,8 +223,15 @@ 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_PERFCOUNT
+  struct timespec perftime;
+#endif
   struct timespec ts;
   clock_systime_timespec(&ts);
+#ifdef CONFIG_SCHED_INSTRUMENTATION_PERFCOUNT
+  up_perf_convert(up_perf_gettime(), &perftime);
+  ts.tv_nsec = perftime.tv_nsec;
+#endif
 
   /* Save all of the common fields */
 

sched/Kconfig

@@ -973,6 +973,14 @@ config SCHED_INSTRUMENTATION_CPUSET
 	---help---
 		Monitor only CPUs in the bitset.  Bit 0=CPU0, Bit1=CPU1, etc.
 
+config SCHED_INSTRUMENTATION_PERFCOUNT
+	bool "Use perf count for instrumentation"
+	default n
+	---help---
+		Enabling this option will use perfcount as the clock source for tv_nsec
+		to achieve higher precision time.
+		This requires calling up_perf_init at system startup.
+
 config SCHED_INSTRUMENTATION_FILTER
 	bool "Instrumentation filter"
 	default n