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ANDROID: softirq: Refine RT defer softirq

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Do not defer softirq processing when RT throttling.
Otherwise softirq process would be deferred indefinitely.

Bug: 234597245
Test: Trigger RT Throttling and check RT & softirq behavior
Fixes: "ANDROID: softirq: defer softirq processing to ksoftirqd if CPU is busy with RT"

Signed-off-by: Luke Chang <lukechang@google.com>
Change-Id: I76df270c39ce8c0633b914c3354a27d6e559ec94
This commit is contained in:
Luke Chang
2022-06-07 13:35:50 +00:00
parent 043c58ffe0
commit e913814ab6
1 changed files with 2 additions and 1 deletions
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3
kernel/sched/cpupri.c
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@@ -343,6 +343,7 @@ bool cpupri_check_rt(void)
{
int cpu = raw_smp_processor_id();
return cpu_rq(cpu)->rd->cpupri.cpu_to_pri[cpu] > CPUPRI_NORMAL;
return (cpu_rq(cpu)->rd->cpupri.cpu_to_pri[cpu] > CPUPRI_NORMAL) &&
(cpu_rq(cpu)->rt.rt_throttled == 0);
}
#endif