diff options
| -rw-r--r-- | kernel/sched/core.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/kernel/sched/core.c b/kernel/sched/core.c index addc3c2d2122..02afa1cc3c8c 100644 --- a/kernel/sched/core.c +++ b/kernel/sched/core.c @@ -3802,7 +3802,7 @@ bool cpus_share_cache(int this_cpu, int that_cpu) return per_cpu(sd_llc_id, this_cpu) == per_cpu(sd_llc_id, that_cpu); } -static inline bool ttwu_queue_cond(int cpu) +static inline bool ttwu_queue_cond(struct task_struct *p, int cpu) { /* * Do not complicate things with the async wake_list while the CPU is @@ -3811,6 +3811,10 @@ static inline bool ttwu_queue_cond(int cpu) if (!cpu_active(cpu)) return false; + /* Ensure the task will still be allowed to run on the CPU. */ + if (!cpumask_test_cpu(cpu, p->cpus_ptr)) + return false; + /* * If the CPU does not share cache, then queue the task on the * remote rqs wakelist to avoid accessing remote data. @@ -3840,7 +3844,7 @@ static inline bool ttwu_queue_cond(int cpu) static bool ttwu_queue_wakelist(struct task_struct *p, int cpu, int wake_flags) { - if (sched_feat(TTWU_QUEUE) && ttwu_queue_cond(cpu)) { + if (sched_feat(TTWU_QUEUE) && ttwu_queue_cond(p, cpu)) { sched_clock_cpu(cpu); /* Sync clocks across CPUs */ __ttwu_queue_wakelist(p, cpu, wake_flags); return true; |