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| author | Ionela Voinescu <ionela.voinescu@arm.com> | 2020-10-27 19:07:11 +0100 |
|---|---|---|
| committer | Peter Zijlstra <peterz@infradead.org> | 2020-11-19 11:25:47 +0100 |
| commit | 31f6a8c0a471be7d7d05c93eac50fcb729e79b9d (patch) | |
| tree | 75904defe592809ef90aa67fcf0558f9c8205524 /kernel/sched/topology.c | |
| parent | sched/uclamp: Allow to reset a task uclamp constraint value (diff) | |
| download | linux-31f6a8c0a471be7d7d05c93eac50fcb729e79b9d.tar.xz linux-31f6a8c0a471be7d7d05c93eac50fcb729e79b9d.zip | |
sched/topology,schedutil: Wrap sched domains rebuild
Add the rebuild_sched_domains_energy() function to wrap the functionality
that rebuilds the scheduling domains if any of the Energy Aware Scheduling
(EAS) initialisation conditions change. This functionality is used when
schedutil is added or removed or when EAS is enabled or disabled
through the sched_energy_aware sysctl.
Therefore, create a single function that is used in both these cases and
that can be later reused.
Signed-off-by: Ionela Voinescu <ionela.voinescu@arm.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: Quentin Perret <qperret@google.com>
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Link: https://lkml.kernel.org/r/20201027180713.7642-2-ionela.voinescu@arm.com
Diffstat (limited to 'kernel/sched/topology.c')
| -rw-r--r-- | kernel/sched/topology.c | 18 |
1 files changed, 11 insertions, 7 deletions
diff --git a/kernel/sched/topology.c b/kernel/sched/topology.c index b296c1c6b961..04d9ebfaedd6 100644 --- a/kernel/sched/topology.c +++ b/kernel/sched/topology.c @@ -211,6 +211,15 @@ unsigned int sysctl_sched_energy_aware = 1; DEFINE_MUTEX(sched_energy_mutex); bool sched_energy_update; +void rebuild_sched_domains_energy(void) +{ + mutex_lock(&sched_energy_mutex); + sched_energy_update = true; + rebuild_sched_domains(); + sched_energy_update = false; + mutex_unlock(&sched_energy_mutex); +} + #ifdef CONFIG_PROC_SYSCTL int sched_energy_aware_handler(struct ctl_table *table, int write, void *buffer, size_t *lenp, loff_t *ppos) @@ -223,13 +232,8 @@ int sched_energy_aware_handler(struct ctl_table *table, int write, ret = proc_dointvec_minmax(table, write, buffer, lenp, ppos); if (!ret && write) { state = static_branch_unlikely(&sched_energy_present); - if (state != sysctl_sched_energy_aware) { - mutex_lock(&sched_energy_mutex); - sched_energy_update = 1; - rebuild_sched_domains(); - sched_energy_update = 0; - mutex_unlock(&sched_energy_mutex); - } + if (state != sysctl_sched_energy_aware) + rebuild_sched_domains_energy(); } return ret; |