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| author |   Peter Zijlstra <peterz@infradead.org> | 2023-08-01 22:41:22 +0200 |
|---|---|---|
| committer | Peter Zijlstra <peterz@infradead.org> | 2023-08-14 17:01:24 +0200 |
| commit | 7537b90c0036759e0b1b43dfbc6224dc5e900b13 (patch) | |
| tree | 2f9a22965c3c92413b17ee0040de768d07d57a3e | |
| parent | sched/rt: sysctl_sched_rr_timeslice show default timeslice after reset (diff) | |
| download | wireguard-linux-7537b90c0036759e0b1b43dfbc6224dc5e900b13.tar.xz wireguard-linux-7537b90c0036759e0b1b43dfbc6224dc5e900b13.zip | |
sched: Simplify get_nohz_timer_target()
Use guards to reduce gotos and simplify control flow.
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Joel Fernandes (Google) <joel@joelfernandes.org>
Reviewed-by: Valentin Schneider <vschneid@redhat.com>
Link: https://lore.kernel.org/r/20230801211811.828443100@infradead.org
Diffstat (limited to '')
| -rw-r--r-- | kernel/sched/core.c | 15 |
1 files changed, 6 insertions, 9 deletions
diff --git a/kernel/sched/core.c b/kernel/sched/core.c index a97eab3e775a..6cda29655cb0 100644 --- a/kernel/sched/core.c +++ b/kernel/sched/core.c @@ -1097,25 +1097,22 @@ int get_nohz_timer_target(void) hk_mask = housekeeping_cpumask(HK_TYPE_TIMER); - rcu_read_lock(); + guard(rcu)(); + for_each_domain(cpu, sd) { for_each_cpu_and(i, sched_domain_span(sd), hk_mask) { if (cpu == i) continue; - if (!idle_cpu(i)) { - cpu = i; - goto unlock; - } + if (!idle_cpu(i)) + return i; } } if (default_cpu == -1) default_cpu = housekeeping_any_cpu(HK_TYPE_TIMER); - cpu = default_cpu; -unlock: - rcu_read_unlock(); - return cpu; + + return default_cpu; } /* |