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| author |   Qais Yousef <qais.yousef@arm.com> | 2022-08-04 15:36:07 +0100 |
|---|---|---|
| committer |   Peter Zijlstra <peterz@infradead.org> | 2022-10-27 11:01:19 +0200 |
| commit | d81304bc6193554014d4372a01debdf65e1e9a4d (patch) | |
| tree | 4030edefb9dbe987274d966b6d05c0c448cd8d8e /tools/perf/scripts/python/task-analyzer.py | |
| parent | sched/uclamp: Make cpu_overutilized() use util_fits_cpu() (diff) | |
| download | wireguard-linux-d81304bc6193554014d4372a01debdf65e1e9a4d.tar.xz wireguard-linux-d81304bc6193554014d4372a01debdf65e1e9a4d.zip | |
sched/uclamp: Cater for uclamp in find_energy_efficient_cpu()'s early exit condition
If the utilization of the woken up task is 0, we skip the energy
calculation because it has no impact.
But if the task is boosted (uclamp_min != 0) will have an impact on task
placement and frequency selection. Only skip if the util is truly
0 after applying uclamp values.
Change uclamp_task_cpu() signature to avoid unnecessary additional calls
to uclamp_eff_get(). feec() is the only user now.
Fixes: 732cd75b8c920 ("sched/fair: Select an energy-efficient CPU on task wake-up")
Signed-off-by: Qais Yousef <qais.yousef@arm.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lore.kernel.org/r/20220804143609.515789-8-qais.yousef@arm.com
Diffstat (limited to 'tools/perf/scripts/python/task-analyzer.py')
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