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sched: Simplify get_nohz_timer_target()

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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
This commit is contained in:
Peter Zijlstra 2023-08-01 22:41:22 +02:00
parent c1fc6484e1
commit 7537b90c00
1 changed files with 6 additions and 9 deletions
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15
kernel/sched/core.c
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@ -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;
}
/*