diff options
Diffstat (limited to 'block')
| -rw-r--r-- | block/blk-core.c | 6 | ||||
| -rw-r--r-- | block/blk-softirq.c | 11 | ||||
| -rw-r--r-- | block/blk-sysfs.c | 13 |
3 files changed, 18 insertions, 12 deletions
diff --git a/block/blk-core.c b/block/blk-core.c index a564852..b322825 100644 --- a/block/blk-core.c +++ b/block/blk-core.c @@ -1279,10 +1279,8 @@ get_rq: init_request_from_bio(req, bio); if (test_bit(QUEUE_FLAG_SAME_COMP, &q->queue_flags) || - bio_flagged(bio, BIO_CPU_AFFINE)) { - req->cpu = blk_cpu_to_group(get_cpu()); - put_cpu(); - } + bio_flagged(bio, BIO_CPU_AFFINE)) + req->cpu = smp_processor_id(); plug = current->plug; if (plug) { diff --git a/block/blk-softirq.c b/block/blk-softirq.c index ee9c216..475fab8 100644 --- a/block/blk-softirq.c +++ b/block/blk-softirq.c @@ -103,22 +103,25 @@ static struct notifier_block __cpuinitdata blk_cpu_notifier = { void __blk_complete_request(struct request *req) { + int ccpu, cpu, group_cpu = NR_CPUS; struct request_queue *q = req->q; unsigned long flags; - int ccpu, cpu, group_cpu; BUG_ON(!q->softirq_done_fn); local_irq_save(flags); cpu = smp_processor_id(); - group_cpu = blk_cpu_to_group(cpu); /* * Select completion CPU */ - if (test_bit(QUEUE_FLAG_SAME_COMP, &q->queue_flags) && req->cpu != -1) + if (test_bit(QUEUE_FLAG_SAME_COMP, &q->queue_flags) && req->cpu != -1) { ccpu = req->cpu; - else + if (!test_bit(QUEUE_FLAG_SAME_FORCE, &q->queue_flags)) { + ccpu = blk_cpu_to_group(ccpu); + group_cpu = blk_cpu_to_group(cpu); + } + } else ccpu = cpu; if (ccpu == cpu || ccpu == group_cpu) { diff --git a/block/blk-sysfs.c b/block/blk-sysfs.c index d935bd8..0ee17b5 100644 --- a/block/blk-sysfs.c +++ b/block/blk-sysfs.c @@ -244,8 +244,9 @@ static ssize_t queue_nomerges_store(struct request_queue *q, const char *page, static ssize_t queue_rq_affinity_show(struct request_queue *q, char *page) { bool set = test_bit(QUEUE_FLAG_SAME_COMP, &q->queue_flags); + bool force = test_bit(QUEUE_FLAG_SAME_FORCE, &q->queue_flags); - return queue_var_show(set, page); + return queue_var_show(set << force, page); } static ssize_t @@ -257,10 +258,14 @@ queue_rq_affinity_store(struct request_queue *q, const char *page, size_t count) ret = queue_var_store(&val, page, count); spin_lock_irq(q->queue_lock); - if (val) + if (val) { queue_flag_set(QUEUE_FLAG_SAME_COMP, q); - else - queue_flag_clear(QUEUE_FLAG_SAME_COMP, q); + if (val == 2) + queue_flag_set(QUEUE_FLAG_SAME_FORCE, q); + } else { + queue_flag_clear(QUEUE_FLAG_SAME_COMP, q); + queue_flag_clear(QUEUE_FLAG_SAME_FORCE, q); + } spin_unlock_irq(q->queue_lock); #endif return ret; |
