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kernel: Fix gathering of runtime thread stats

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The function k_thread_runtime_stats_all_get() now populates the
current_cycles field in the thread runtime stats structure.

Resets the number of cycles in the CPU's current usage window once
the idle thread is scheduled.

Fixes the average_cycles calcuation.

Signed-off-by: Peter Mitsis <peter.mitsis@intel.com>
This commit is contained in:
Peter Mitsis 2022-05-03 11:39:39 -04:00 • committed by Maureen Helm
commit 976e4087ec
2 changed files with 12 additions and 8 deletions
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1
kernel/thread.c
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@ -1100,6 +1100,7 @@ int k_thread_runtime_stats_all_get(k_thread_runtime_stats_t *stats)
stats->execution_cycles += tmp_stats.execution_cycles;
stats->total_cycles += tmp_stats.total_cycles;
#ifdef CONFIG_SCHED_THREAD_USAGE_ANALYSIS
stats->current_cycles += tmp_stats.current_cycles;
stats->peak_cycles += tmp_stats.peak_cycles;
stats->average_cycles += tmp_stats.average_cycles;
#endif

9
kernel/usage.c
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@ -39,16 +39,19 @@ static void sched_cpu_update_usage(struct _cpu *cpu, uint32_t cycles)
return;
}
if (cpu->current != cpu->idle_thread) {
cpu->usage.total += cycles;
#ifdef CONFIG_SCHED_THREAD_USAGE_ANALYSIS
cpu->usage.current += cycles;
if (cpu->usage.longest < cpu->usage.current) {
cpu->usage.longest = cpu->usage.current;
}
} else {
cpu->usage.current = 0;
cpu->usage.num_windows++;
#endif
if (cpu->current != cpu->idle_thread) {
cpu->usage.total += cycles;
}
}
#else