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Add SCHED_INSTRUMENTATION_HIRES support

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Nakamura, Yuuichi 2020-10-05 14:54:25 +09:00 committed by Xiang Xiao
parent 58aa886bad
commit 954c90b4b5
2 changed files with 152 additions and 100 deletions
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234
system/sched_note/note_main.c
View File

@ -35,6 +35,22 @@
#include <nuttx/sched_note.h> #include <nuttx/sched_note.h>
/************************************************************************************
* Pre-processor Definitions
************************************************************************************/
#ifdef CONFIG_SCHED_INSTRUMENTATION_HIRES
# define syslog_time(priority, fmt, ...) \
syslog(priority, "%08lx.%08lx: " fmt, \
(unsigned long)systime_sec, (unsigned long)systime_nsec, \
__VA_ARGS__)
#else
# define syslog_time(priority, fmt, ...) \
syslog(priority, "%08lx: " fmt, \
(unsigned long)systime, \
__VA_ARGS__)
#endif
/************************************************************************************ /************************************************************************************
* Private Data * Private Data
************************************************************************************/ ************************************************************************************/
@ -72,7 +88,12 @@ static FAR const char *g_statenames[] =
static void dump_notes(size_t nread) static void dump_notes(size_t nread)
{ {
FAR struct note_common_s *note; FAR struct note_common_s *note;
#ifdef CONFIG_SCHED_INSTRUMENTATION_HIRES
uint32_t systime_sec;
uint32_t systime_nsec;
#else
uint32_t systime; uint32_t systime;
#endif
pid_t pid; pid_t pid;
off_t offset; off_t offset;
@ -82,10 +103,21 @@ static void dump_notes(size_t nread)
note = (FAR struct note_common_s *)&g_note_buffer[offset]; note = (FAR struct note_common_s *)&g_note_buffer[offset];
pid = (pid_t)note->nc_pid[0] + pid = (pid_t)note->nc_pid[0] +
((pid_t)note->nc_pid[1] << 8); ((pid_t)note->nc_pid[1] << 8);
#ifdef CONFIG_SCHED_INSTRUMENTATION_HIRES
systime_nsec = (uint32_t)note->nc_systime_nsec[0] +
(uint32_t)(note->nc_systime_nsec[1] << 8) +
(uint32_t)(note->nc_systime_nsec[2] << 16) +
(uint32_t)(note->nc_systime_nsec[3] << 24);
systime_sec = (uint32_t)note->nc_systime_sec[0] +
(uint32_t)(note->nc_systime_sec[1] << 8) +
(uint32_t)(note->nc_systime_sec[2] << 16) +
(uint32_t)(note->nc_systime_sec[3] << 24);
#else
systime = (uint32_t) note->nc_systime[0] + systime = (uint32_t) note->nc_systime[0] +
(uint32_t)(note->nc_systime[1] << 8) + (uint32_t)(note->nc_systime[1] << 8) +
(uint32_t)(note->nc_systime[2] << 16) + (uint32_t)(note->nc_systime[2] << 16) +
(uint32_t)(note->nc_systime[3] << 24); (uint32_t)(note->nc_systime[3] << 24);
#endif
switch (note->nc_type) switch (note->nc_type)
{ {
@ -104,24 +136,28 @@ static void dump_notes(size_t nread)
#ifdef CONFIG_SMP #ifdef CONFIG_SMP
#if CONFIG_TASK_NAME_SIZE > 0 #if CONFIG_TASK_NAME_SIZE > 0
syslog(LOG_INFO, "%08lx: Task %u \"%s\" started, CPU%u, priority %u\n", syslog_time(LOG_INFO,
(unsigned long)systime, (unsigned int)pid, "Task %u \"%s\" started, CPU%u, priority %u\n",
(unsigned int)pid,
note_start->nst_name, (unsigned int)note->nc_cpu, note_start->nst_name, (unsigned int)note->nc_cpu,
(unsigned int)note->nc_priority); (unsigned int)note->nc_priority);
#else #else
syslog(LOG_INFO, "%08lx: Task %u started, CPU%u, priority %u\n", syslog_time(LOG_INFO,
(unsigned long)systime, (unsigned int)pid, "Task %u started, CPU%u, priority %u\n",
(unsigned int)pid,
(unsigned int)note->nc_cpu, (unsigned int)note->nc_cpu,
(unsigned int)note->nc_priority); (unsigned int)note->nc_priority);
#endif #endif
#else #else
#if CONFIG_TASK_NAME_SIZE > 0 #if CONFIG_TASK_NAME_SIZE > 0
syslog(LOG_INFO, "%08lx: Task %u \"%s\" started, priority %u\n", syslog_time(LOG_INFO,
(unsigned long)systime, (unsigned int)pid, "Task %u \"%s\" started, priority %u\n",
(unsigned int)pid,
note_start->nst_name, (unsigned int)note->nc_priority); note_start->nst_name, (unsigned int)note->nc_priority);
#else #else
syslog(LOG_INFO, "%08lx: Task %u started, priority %u\n", syslog_time(LOG_INFO,
(unsigned long)systime, (unsigned int)pid, "Task %u started, priority %u\n",
(unsigned int)pid,
(unsigned int)note->nc_priority); (unsigned int)note->nc_priority);
#endif #endif
#endif #endif
@ -139,14 +175,14 @@ static void dump_notes(size_t nread)
} }
#ifdef CONFIG_SMP #ifdef CONFIG_SMP
syslog(LOG_INFO, syslog_time(LOG_INFO,
"%08lx: Task %u stopped, CPU%u, priority %u\n", "Task %u stopped, CPU%u, priority %u\n",
(unsigned long)systime, (unsigned int)pid, (unsigned int)pid,
(unsigned int)note->nc_cpu, (unsigned int)note->nc_priority); (unsigned int)note->nc_cpu, (unsigned int)note->nc_priority);
#else #else
syslog(LOG_INFO, syslog_time(LOG_INFO,
"%08lx: Task %u stopped, priority %u\n", "Task %u stopped, priority %u\n",
(unsigned long)systime, (unsigned int)pid, (unsigned int)pid,
(unsigned int)note->nc_priority); (unsigned int)note->nc_priority);
#endif #endif
} }
@ -176,15 +212,15 @@ static void dump_notes(size_t nread)
} }
#ifdef CONFIG_SMP #ifdef CONFIG_SMP
syslog(LOG_INFO, syslog_time(LOG_INFO,
"%08lx: Task %u suspended, CPU%u, priority %u, state \"%s\"\n", "Task %u suspended, CPU%u, priority %u, state \"%s\"\n",
(unsigned long)systime, (unsigned int)pid, (unsigned int)pid,
(unsigned int)note->nc_cpu, (unsigned int)note->nc_cpu,
(unsigned int)note->nc_priority, statename); (unsigned int)note->nc_priority, statename);
#else #else
syslog(LOG_INFO, syslog_time(LOG_INFO,
"%08lx: Task %u suspended, priority %u, state \"%s\"\n", "Task %u suspended, priority %u, state \"%s\"\n",
(unsigned long)systime, (unsigned int)pid, (unsigned int)pid,
(unsigned int)note->nc_priority, statename); (unsigned int)note->nc_priority, statename);
#endif #endif
} }
@ -201,15 +237,15 @@ static void dump_notes(size_t nread)
} }
#ifdef CONFIG_SMP #ifdef CONFIG_SMP
syslog(LOG_INFO, syslog_time(LOG_INFO,
"%08lx: Task %u resumed, CPU%u, priority %u\n", "Task %u resumed, CPU%u, priority %u\n",
(unsigned long)systime, (unsigned int)pid, (unsigned int)pid,
(unsigned int)note->nc_cpu, (unsigned int)note->nc_cpu,
(unsigned int)note->nc_priority); (unsigned int)note->nc_priority);
#else #else
syslog(LOG_INFO, syslog_time(LOG_INFO,
"%08lx: Task %u resumed, priority %u\n", "Task %u resumed, priority %u\n",
(unsigned long)systime, (unsigned int)pid, (unsigned int)pid,
(unsigned int)note->nc_priority); (unsigned int)note->nc_priority);
#endif #endif
} }
@ -229,9 +265,9 @@ static void dump_notes(size_t nread)
return; return;
} }
syslog(LOG_INFO, syslog_time(LOG_INFO,
"%08lx: Task %u CPU%u requests CPU%u to start, priority %u\n", "Task %u CPU%u requests CPU%u to start, priority %u\n",
(unsigned long)systime, (unsigned int)pid, (unsigned int)pid,
(unsigned int)note->nc_cpu, (unsigned int)note->nc_cpu,
(unsigned int)note_start->ncs_target, (unsigned int)note_start->ncs_target,
(unsigned int)note->nc_priority); (unsigned int)note->nc_priority);
@ -248,9 +284,9 @@ static void dump_notes(size_t nread)
return; return;
} }
syslog(LOG_INFO, syslog_time(LOG_INFO,
"%08lx: Task %u CPU%u has started, priority %u\n", "Task %u CPU%u has started, priority %u\n",
(unsigned long)systime, (unsigned int)pid, (unsigned int)pid,
(unsigned int)note->nc_cpu, (unsigned int)note->nc_cpu,
(unsigned int)note->nc_priority); (unsigned int)note->nc_priority);
} }
@ -269,9 +305,9 @@ static void dump_notes(size_t nread)
return; return;
} }
syslog(LOG_INFO, syslog_time(LOG_INFO,
"%08lx: Task %u CPU%u requests CPU%u to pause, priority %u\n", "Task %u CPU%u requests CPU%u to pause, priority %u\n",
(unsigned long)systime, (unsigned int)pid, (unsigned int)pid,
(unsigned int)note->nc_cpu, (unsigned int)note->nc_cpu,
(unsigned int)note_pause->ncp_target, (unsigned int)note_pause->ncp_target,
(unsigned int)note->nc_priority); (unsigned int)note->nc_priority);
@ -288,9 +324,9 @@ static void dump_notes(size_t nread)
return; return;
} }
syslog(LOG_INFO, syslog_time(LOG_INFO,
"%08lx: Task %u CPU%u has paused, priority %u\n", "Task %u CPU%u has paused, priority %u\n",
(unsigned long)systime, (unsigned int)pid, (unsigned int)pid,
(unsigned int)note->nc_cpu, (unsigned int)note->nc_cpu,
(unsigned int)note->nc_priority); (unsigned int)note->nc_priority);
} }
@ -309,9 +345,9 @@ static void dump_notes(size_t nread)
return; return;
} }
syslog(LOG_INFO, syslog_time(LOG_INFO,
"%08lx: Task %u CPU%u requests CPU%u to resume, priority %u\n", "Task %u CPU%u requests CPU%u to resume, priority %u\n",
(unsigned long)systime, (unsigned int)pid, (unsigned int)pid,
(unsigned int)note->nc_cpu, (unsigned int)note->nc_cpu,
(unsigned int)note_resume->ncr_target, (unsigned int)note_resume->ncr_target,
(unsigned int)note->nc_priority); (unsigned int)note->nc_priority);
@ -328,9 +364,9 @@ static void dump_notes(size_t nread)
return; return;
} }
syslog(LOG_INFO, syslog_time(LOG_INFO,
"%08lx: Task %u CPU%u has resumed, priority %u\n", "Task %u CPU%u has resumed, priority %u\n",
(unsigned long)systime, (unsigned int)pid, (unsigned int)pid,
(unsigned int)note->nc_cpu, (unsigned int)note->nc_cpu,
(unsigned int)note->nc_priority); (unsigned int)note->nc_priority);
} }
@ -359,30 +395,30 @@ static void dump_notes(size_t nread)
if (note->nc_type == NOTE_PREEMPT_LOCK) if (note->nc_type == NOTE_PREEMPT_LOCK)
{ {
#ifdef CONFIG_SMP #ifdef CONFIG_SMP
syslog(LOG_INFO, syslog_time(LOG_INFO,
"%08lx: Task %u locked, CPU%u, priority %u, count=%u\n", "Task %u locked, CPU%u, priority %u, count=%u\n",
(unsigned long)systime, (unsigned int)pid, (unsigned int)pid,
(unsigned int)note->nc_cpu, (unsigned int)note->nc_cpu,
(unsigned int)note->nc_priority, (unsigned int)count); (unsigned int)note->nc_priority, (unsigned int)count);
#else #else
syslog(LOG_INFO, syslog_time(LOG_INFO,
"%08lx: Task %u locked, priority %u, count=%u\n", "Task %u locked, priority %u, count=%u\n",
(unsigned long)systime, (unsigned int)pid, (unsigned int)pid,
(unsigned int)note->nc_priority, (unsigned int)count); (unsigned int)note->nc_priority, (unsigned int)count);
#endif #endif
} }
else else
{ {
#ifdef CONFIG_SMP #ifdef CONFIG_SMP
syslog(LOG_INFO, syslog_time(LOG_INFO,
"%08lx: Task %u unlocked, CPU%u, priority %u, count=%u\n", "Task %u unlocked, CPU%u, priority %u, count=%u\n",
(unsigned long)systime, (unsigned int)pid, (unsigned int)pid,
(unsigned int)note->nc_cpu, (unsigned int)note->nc_cpu,
(unsigned int)note->nc_priority, (unsigned int)count); (unsigned int)note->nc_priority, (unsigned int)count);
#else #else
syslog(LOG_INFO, syslog_time(LOG_INFO,
"%08lx: Task %u unlocked, priority %u, count=%u\n", "Task %u unlocked, priority %u, count=%u\n",
(unsigned long)systime, (unsigned int)pid, (unsigned int)pid,
(unsigned int)note->nc_priority, (unsigned int)count); (unsigned int)note->nc_priority, (unsigned int)count);
#endif #endif
} }
@ -415,33 +451,33 @@ static void dump_notes(size_t nread)
if (note->nc_type == NOTE_CSECTION_ENTER) if (note->nc_type == NOTE_CSECTION_ENTER)
{ {
syslog(LOG_INFO, syslog_time(LOG_INFO,
"%08lx: Task %u enter csection, CPU%u, priority %u, " "Task %u enter csection, CPU%u, priority %u, "
"count=%u\n", "count=%u\n",
(unsigned long)systime, (unsigned int)pid, (unsigned int)pid,
(unsigned int)note->nc_cpu, (unsigned int)note->nc_cpu,
(unsigned int)note->nc_priority, (unsigned int)count); (unsigned int)note->nc_priority, (unsigned int)count);
} }
else else
{ {
syslog(LOG_INFO, syslog_time(LOG_INFO,
"%08lx: Task %u leave csection, CPU%u, priority %u, " "Task %u leave csection, CPU%u, priority %u, "
"count=%u\n", "count=%u\n",
(unsigned long)systime, (unsigned int)pid, (unsigned int)pid,
(unsigned int)note->nc_cpu, (unsigned int)note->nc_cpu,
(unsigned int)note->nc_priority, (unsigned int)count); (unsigned int)note->nc_priority, (unsigned int)count);
} }
#else #else
if (note->nc_type == NOTE_CSECTION_ENTER) if (note->nc_type == NOTE_CSECTION_ENTER)
{ {
syslog(LOG_INFO, "%08lx: Task %u enter csection, priority %u\n", syslog_time(LOG_INFO, "Task %u enter csection, priority %u\n",
(unsigned long)systime, (unsigned int)pid, (unsigned int)pid,
(unsigned int)note->nc_priority); (unsigned int)note->nc_priority);
} }
else else
{ {
syslog(LOG_INFO, "%08lx: Task %u leave csection, priority %u\n", syslog_time(LOG_INFO, "Task %u leave csection, priority %u\n",
(unsigned long)systime, (unsigned int)pid, (unsigned int)pid,
(unsigned int)note->nc_priority); (unsigned int)note->nc_priority);
} }
#endif #endif
@ -487,10 +523,10 @@ static void dump_notes(size_t nread)
#ifdef CONFIG_SMP #ifdef CONFIG_SMP
case NOTE_SPINLOCK_LOCK: case NOTE_SPINLOCK_LOCK:
{ {
syslog(LOG_INFO, syslog_time(LOG_INFO,
"%08lx: Task %u CPU%u wait for spinlock=%p value=%u " "Task %u CPU%u wait for spinlock=%p value=%u "
"priority %u\n", "priority %u\n",
(unsigned long)systime, (unsigned int)pid, (unsigned int)pid,
(unsigned int)note->nc_cpu, (unsigned int)note->nc_cpu,
spinlock, spinlock,
(unsigned int)note_spinlock->nsp_value, (unsigned int)note_spinlock->nsp_value,
@ -500,10 +536,10 @@ static void dump_notes(size_t nread)
case NOTE_SPINLOCK_LOCKED: case NOTE_SPINLOCK_LOCKED:
{ {
syslog(LOG_INFO, syslog_time(LOG_INFO,
"%08lx: Task %u CPU%u has spinlock=%p value=%u " "Task %u CPU%u has spinlock=%p value=%u "
"priority %u\n", "priority %u\n",
(unsigned long)systime, (unsigned int)pid, (unsigned int)pid,
(unsigned int)note->nc_cpu, (unsigned int)note->nc_cpu,
spinlock, spinlock,
(unsigned int)note_spinlock->nsp_value, (unsigned int)note_spinlock->nsp_value,
@ -513,10 +549,10 @@ static void dump_notes(size_t nread)
case NOTE_SPINLOCK_UNLOCK: case NOTE_SPINLOCK_UNLOCK:
{ {
syslog(LOG_INFO, syslog_time(LOG_INFO,
"%08lx: Task %u CPU%u unlocking spinlock=%p value=%u " "Task %u CPU%u unlocking spinlock=%p value=%u "
"priority %u\n", "priority %u\n",
(unsigned long)systime, (unsigned int)pid, (unsigned int)pid,
(unsigned int)note->nc_cpu, (unsigned int)note->nc_cpu,
spinlock, spinlock,
(unsigned int)note_spinlock->nsp_value, (unsigned int)note_spinlock->nsp_value,
@ -526,10 +562,10 @@ static void dump_notes(size_t nread)
case NOTE_SPINLOCK_ABORT: case NOTE_SPINLOCK_ABORT:
{ {
syslog(LOG_INFO, syslog_time(LOG_INFO,
"%08lx: Task %u CPU%u abort wait on spinlock=%p value=%u " "Task %u CPU%u abort wait on spinlock=%p value=%u "
"priority %u\n", "priority %u\n",
(unsigned long)systime, (unsigned int)pid, (unsigned int)pid,
(unsigned int)note->nc_cpu, (unsigned int)note->nc_cpu,
spinlock, spinlock,
(unsigned int)note_spinlock->nsp_value, (unsigned int)note_spinlock->nsp_value,
@ -539,10 +575,10 @@ static void dump_notes(size_t nread)
#else #else
case NOTE_SPINLOCK_LOCK: case NOTE_SPINLOCK_LOCK:
{ {
syslog(LOG_INFO, syslog_time(LOG_INFO,
"%08lx: Task %u wait for spinlock=%p value=%u " "Task %u wait for spinlock=%p value=%u "
"priority %u\n", "priority %u\n",
(unsigned long)systime, (unsigned int)pid, (unsigned int)pid,
spinlock, spinlock,
(unsigned int)note_spinlock->nsp_value, (unsigned int)note_spinlock->nsp_value,
(unsigned int)note->nc_priority); (unsigned int)note->nc_priority);
@ -551,9 +587,9 @@ static void dump_notes(size_t nread)
case NOTE_SPINLOCK_LOCKED: case NOTE_SPINLOCK_LOCKED:
{ {
syslog(LOG_INFO, syslog_time(LOG_INFO,
"%08lx: Task %u has spinlock=%p value=%u priority %u\n", "Task %u has spinlock=%p value=%u priority %u\n",
(unsigned long)systime, (unsigned int)pid, (unsigned int)pid,
spinlock, spinlock,
(unsigned int)note_spinlock->nsp_value, (unsigned int)note_spinlock->nsp_value,
(unsigned int)note->nc_priority); (unsigned int)note->nc_priority);
@ -562,10 +598,10 @@ static void dump_notes(size_t nread)
case NOTE_SPINLOCK_UNLOCK: case NOTE_SPINLOCK_UNLOCK:
{ {
syslog(LOG_INFO, syslog_time(LOG_INFO,
"%08lx: Task %u unlocking spinlock=%p value=%u " "Task %u unlocking spinlock=%p value=%u "
"priority %u\n", "priority %u\n",
(unsigned long)systime, (unsigned int)pid, (unsigned int)pid,
spinlock, spinlock,
(unsigned int)note_spinlock->nsp_value, (unsigned int)note_spinlock->nsp_value,
(unsigned int)note->nc_priority); (unsigned int)note->nc_priority);
@ -574,10 +610,10 @@ static void dump_notes(size_t nread)
case NOTE_SPINLOCK_ABORT: case NOTE_SPINLOCK_ABORT:
{ {
syslog(LOG_INFO, syslog_time(LOG_INFO,
"%08lx: Task %u abort wait on spinlock=%p value=%u " "Task %u abort wait on spinlock=%p value=%u "
"priority %u\n", "priority %u\n",
(unsigned long)systime, (unsigned int)pid, (unsigned int)pid,
spinlock, spinlock,
(unsigned int)note_spinlock->nsp_value, (unsigned int)note_spinlock->nsp_value,
(unsigned int)note->nc_priority); (unsigned int)note->nc_priority);
@ -603,9 +639,9 @@ static void dump_notes(size_t nread)
return; return;
} }
syslog(LOG_INFO, syslog_time(LOG_INFO,
"%08lx: Task %u Enter SYSCALL %d\n", "Task %u Enter SYSCALL %d\n",
(unsigned long)systime, (unsigned int)pid, (unsigned int)pid,
note_sysenter->nsc_nr); note_sysenter->nsc_nr);
} }
break; break;
@ -638,9 +674,9 @@ static void dump_notes(size_t nread)
#endif #endif
; ;
syslog(LOG_INFO, syslog_time(LOG_INFO,
"%08lx: Task %u Leave SYSCALL %d: %" PRIdPTR "\n", "Task %u Leave SYSCALL %d: %" PRIdPTR "\n",
(unsigned long)systime, (unsigned int)pid, (unsigned int)pid,
note_sysleave->nsc_nr, result); note_sysleave->nsc_nr, result);
} }
break; break;
@ -661,9 +697,9 @@ static void dump_notes(size_t nread)
return; return;
} }
syslog(LOG_INFO, syslog_time(LOG_INFO,
"%08lx: Task %u %s IRQ %d\n", "Task %u %s IRQ %d\n",
(unsigned long)systime, (unsigned int)pid, (unsigned int)pid,
note->nc_type == NOTE_IRQ_ENTER ? "Enter" : "Leave", note->nc_type == NOTE_IRQ_ENTER ? "Enter" : "Leave",
note_irq->nih_irq); note_irq->nih_irq);
} }

18
system/trace/trace_dump.c
View File

@ -254,10 +254,21 @@ static void trace_dump_header(FAR FILE *out,
FAR struct trace_dump_context_s *ctx) FAR struct trace_dump_context_s *ctx)
{ {
pid_t pid; pid_t pid;
#ifdef CONFIG_SCHED_INSTRUMENTATION_HIRES
uint32_t nsec = note->nc_systime_nsec[0] +
(note->nc_systime_nsec[1] << 8) +
(note->nc_systime_nsec[2] << 16) +
(note->nc_systime_nsec[3] << 24);
uint32_t sec = note->nc_systime_sec[0] +
(note->nc_systime_sec[1] << 8) +
(note->nc_systime_sec[2] << 16) +
(note->nc_systime_sec[3] << 24);
#else
uint32_t systime = note->nc_systime[0] + uint32_t systime = note->nc_systime[0] +
(note->nc_systime[1] << 8) + (note->nc_systime[1] << 8) +
(note->nc_systime[2] << 16) + (note->nc_systime[2] << 16) +
(note->nc_systime[3] << 24); (note->nc_systime[3] << 24);
#endif
#ifdef CONFIG_SMP #ifdef CONFIG_SMP
int cpu = note->nc_cpu; int cpu = note->nc_cpu;
#else #else
@ -268,9 +279,14 @@ static void trace_dump_header(FAR FILE *out,
fprintf(out, "%8s-%-3u [%d] %3u.%09u: ", fprintf(out, "%8s-%-3u [%d] %3u.%09u: ",
get_task_name(pid, ctx), get_pid(pid), cpu, get_task_name(pid, ctx), get_pid(pid), cpu,
#ifdef CONFIG_SCHED_INSTRUMENTATION_HIRES
sec, nsec
#else
systime / (1000 * 1000 / CONFIG_USEC_PER_TICK), systime / (1000 * 1000 / CONFIG_USEC_PER_TICK),
(systime % (1000 * 1000 / CONFIG_USEC_PER_TICK)) (systime % (1000 * 1000 / CONFIG_USEC_PER_TICK))
* CONFIG_USEC_PER_TICK * 1000); * CONFIG_USEC_PER_TICK * 1000
#endif
);
} }
/**************************************************************************** /****************************************************************************