diff options
| author | Qais Yousef <qyousef@layalina.io> | 2023-09-17 00:29:55 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2023-09-29 10:29:18 +0200 |
| commit | 15874a3d27e6405e9d17595f83bd3ca1b6cab16d (patch) | |
| tree | ae403709ec64172463eece37a3d92ded7497e890 /kernel/sched | |
| parent | 23c9519def98ee0fa97ea5871535e9b136f522fc (diff) | |
| download | linux-15874a3d27e6405e9d17595f83bd3ca1b6cab16d.tar.gz | |
sched/debug: Add new tracepoint to track compute energy computation
It was useful to track feec() placement decision and debug the spare
capacity and optimization issues vs uclamp_max.
Signed-off-by: Qais Yousef (Google) <qyousef@layalina.io>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Reviewed-by: Dietmar Eggemann <dietmar.eggemann@arm.com>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lore.kernel.org/r/20230916232955.2099394-4-qyousef@layalina.io
Diffstat (limited to 'kernel/sched')
| -rw-r--r-- | kernel/sched/core.c | 1 | ||||
| -rw-r--r-- | kernel/sched/fair.c | 7 |
2 files changed, 7 insertions, 1 deletions
diff --git a/kernel/sched/core.c b/kernel/sched/core.c index 84881a582847f0..324980e3d2e514 100644 --- a/kernel/sched/core.c +++ b/kernel/sched/core.c @@ -114,6 +114,7 @@ EXPORT_TRACEPOINT_SYMBOL_GPL(sched_overutilized_tp); EXPORT_TRACEPOINT_SYMBOL_GPL(sched_util_est_cfs_tp); EXPORT_TRACEPOINT_SYMBOL_GPL(sched_util_est_se_tp); EXPORT_TRACEPOINT_SYMBOL_GPL(sched_update_nr_running_tp); +EXPORT_TRACEPOINT_SYMBOL_GPL(sched_compute_energy_tp); DEFINE_PER_CPU_SHARED_ALIGNED(struct rq, runqueues); diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c index 284b0abe7f9b43..e2a69af8be36e2 100644 --- a/kernel/sched/fair.c +++ b/kernel/sched/fair.c @@ -7600,11 +7600,16 @@ compute_energy(struct energy_env *eenv, struct perf_domain *pd, { unsigned long max_util = eenv_pd_max_util(eenv, pd_cpus, p, dst_cpu); unsigned long busy_time = eenv->pd_busy_time; + unsigned long energy; if (dst_cpu >= 0) busy_time = min(eenv->pd_cap, busy_time + eenv->task_busy_time); - return em_cpu_energy(pd->em_pd, max_util, busy_time, eenv->cpu_cap); + energy = em_cpu_energy(pd->em_pd, max_util, busy_time, eenv->cpu_cap); + + trace_sched_compute_energy_tp(p, dst_cpu, energy, max_util, busy_time); + + return energy; } /* |