diff options
Diffstat (limited to 'block')
| -rw-r--r-- | block/blk-mq.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/block/blk-mq.c b/block/blk-mq.c index a428798e1c5c..c338c9bc5a2c 100644 --- a/block/blk-mq.c +++ b/block/blk-mq.c @@ -650,6 +650,14 @@ static inline bool blk_mq_complete_need_ipi(struct request *rq) if (!IS_ENABLED(CONFIG_SMP) || !test_bit(QUEUE_FLAG_SAME_COMP, &rq->q->queue_flags)) return false; + /* + * With force threaded interrupts enabled, raising softirq from an SMP + * function call will always result in waking the ksoftirqd thread. + * This is probably worse than completing the request on a different + * cache domain. + */ + if (force_irqthreads) + return false; /* same CPU or cache domain? Complete locally */ if (cpu == rq->mq_ctx->cpu || |