summaryrefslogtreecommitdiffstats
diff options
context:
space:
mode:
Diffstat
-rw-r--r--block/blk-mq-debugfs.c69
-rw-r--r--block/blk-mq-sched.c11
-rw-r--r--block/blk-mq.c29
-rw-r--r--block/blk-mq.h4
4 files changed, 68 insertions, 45 deletions
diff --git a/block/blk-mq-debugfs.c b/block/blk-mq-debugfs.c
index 1e12033be9ea7..90d68760af086 100644
--- a/block/blk-mq-debugfs.c
+++ b/block/blk-mq-debugfs.c
@@ -652,36 +652,43 @@ static int hctx_dispatch_busy_show(void *data, struct seq_file *m)
return 0;
}
-static void *ctx_rq_list_start(struct seq_file *m, loff_t *pos)
- __acquires(&ctx->lock)
-{
- struct blk_mq_ctx *ctx = m->private;
-
- spin_lock(&ctx->lock);
- return seq_list_start(&ctx->rq_list, *pos);
-}
-
-static void *ctx_rq_list_next(struct seq_file *m, void *v, loff_t *pos)
-{
- struct blk_mq_ctx *ctx = m->private;
-
- return seq_list_next(v, &ctx->rq_list, pos);
-}
+#define CTX_RQ_SEQ_OPS(name, type) \
+static void *ctx_##name##_rq_list_start(struct seq_file *m, loff_t *pos) \
+ __acquires(&ctx->lock) \
+{ \
+ struct blk_mq_ctx *ctx = m->private; \
+ \
+ spin_lock(&ctx->lock); \
+ return seq_list_start(&ctx->rq_lists[type], *pos); \
+} \
+ \
+static void *ctx_##name##_rq_list_next(struct seq_file *m, void *v, \
+ loff_t *pos) \
+{ \
+ struct blk_mq_ctx *ctx = m->private; \
+ \
+ return seq_list_next(v, &ctx->rq_lists[type], pos); \
+} \
+ \
+static void ctx_##name##_rq_list_stop(struct seq_file *m, void *v) \
+ __releases(&ctx->lock) \
+{ \
+ struct blk_mq_ctx *ctx = m->private; \
+ \
+ spin_unlock(&ctx->lock); \
+} \
+ \
+static const struct seq_operations ctx_##name##_rq_list_seq_ops = { \
+ .start = ctx_##name##_rq_list_start, \
+ .next = ctx_##name##_rq_list_next, \
+ .stop = ctx_##name##_rq_list_stop, \
+ .show = blk_mq_debugfs_rq_show, \
+}
+
+CTX_RQ_SEQ_OPS(default, HCTX_TYPE_DEFAULT);
+CTX_RQ_SEQ_OPS(read, HCTX_TYPE_READ);
+CTX_RQ_SEQ_OPS(poll, HCTX_TYPE_POLL);
-static void ctx_rq_list_stop(struct seq_file *m, void *v)
- __releases(&ctx->lock)
-{
- struct blk_mq_ctx *ctx = m->private;
-
- spin_unlock(&ctx->lock);
-}
-
-static const struct seq_operations ctx_rq_list_seq_ops = {
- .start = ctx_rq_list_start,
- .next = ctx_rq_list_next,
- .stop = ctx_rq_list_stop,
- .show = blk_mq_debugfs_rq_show,
-};
static int ctx_dispatched_show(void *data, struct seq_file *m)
{
struct blk_mq_ctx *ctx = data;
@@ -819,7 +826,9 @@ static const struct blk_mq_debugfs_attr blk_mq_debugfs_hctx_attrs[] = {
};
static const struct blk_mq_debugfs_attr blk_mq_debugfs_ctx_attrs[] = {
- {"rq_list", 0400, .seq_ops = &ctx_rq_list_seq_ops},
+ {"default_rq_list", 0400, .seq_ops = &ctx_default_rq_list_seq_ops},
+ {"read_rq_list", 0400, .seq_ops = &ctx_read_rq_list_seq_ops},
+ {"poll_rq_list", 0400, .seq_ops = &ctx_poll_rq_list_seq_ops},
{"dispatched", 0600, ctx_dispatched_show, ctx_dispatched_write},
{"merged", 0600, ctx_merged_show, ctx_merged_write},
{"completed", 0600, ctx_completed_show, ctx_completed_write},
diff --git a/block/blk-mq-sched.c b/block/blk-mq-sched.c
index 056fa9baf44e6..140933e4a7d12 100644
--- a/block/blk-mq-sched.c
+++ b/block/blk-mq-sched.c
@@ -302,11 +302,14 @@ EXPORT_SYMBOL_GPL(blk_mq_bio_list_merge);
* too much time checking for merges.
*/
static bool blk_mq_attempt_merge(struct request_queue *q,
+ struct blk_mq_hw_ctx *hctx,
struct blk_mq_ctx *ctx, struct bio *bio)
{
+ enum hctx_type type = hctx->type;
+
lockdep_assert_held(&ctx->lock);
- if (blk_mq_bio_list_merge(q, &ctx->rq_list, bio)) {
+ if (blk_mq_bio_list_merge(q, &ctx->rq_lists[type], bio)) {
ctx->rq_merged++;
return true;
}
@@ -320,17 +323,19 @@ bool __blk_mq_sched_bio_merge(struct request_queue *q, struct bio *bio)
struct blk_mq_ctx *ctx = blk_mq_get_ctx(q);
struct blk_mq_hw_ctx *hctx = blk_mq_map_queue(q, bio->bi_opf, ctx->cpu);
bool ret = false;
+ enum hctx_type type;
if (e && e->type->ops.bio_merge) {
blk_mq_put_ctx(ctx);
return e->type->ops.bio_merge(hctx, bio);
}
+ type = hctx->type;
if ((hctx->flags & BLK_MQ_F_SHOULD_MERGE) &&
- !list_empty_careful(&ctx->rq_list)) {
+ !list_empty_careful(&ctx->rq_lists[type])) {
/* default per sw-queue merge */
spin_lock(&ctx->lock);
- ret = blk_mq_attempt_merge(q, ctx, bio);
+ ret = blk_mq_attempt_merge(q, hctx, ctx, bio);
spin_unlock(&ctx->lock);
}
diff --git a/block/blk-mq.c b/block/blk-mq.c
index 313f28b2d0790..9c1c1544bac31 100644
--- a/block/blk-mq.c
+++ b/block/blk-mq.c
@@ -958,9 +958,10 @@ static bool flush_busy_ctx(struct sbitmap *sb, unsigned int bitnr, void *data)
struct flush_busy_ctx_data *flush_data = data;
struct blk_mq_hw_ctx *hctx = flush_data->hctx;
struct blk_mq_ctx *ctx = hctx->ctxs[bitnr];
+ enum hctx_type type = hctx->type;
spin_lock(&ctx->lock);
- list_splice_tail_init(&ctx->rq_list, flush_data->list);
+ list_splice_tail_init(&ctx->rq_lists[type], flush_data->list);
sbitmap_clear_bit(sb, bitnr);
spin_unlock(&ctx->lock);
return true;
@@ -992,12 +993,13 @@ static bool dispatch_rq_from_ctx(struct sbitmap *sb, unsigned int bitnr,
struct dispatch_rq_data *dispatch_data = data;
struct blk_mq_hw_ctx *hctx = dispatch_data->hctx;
struct blk_mq_ctx *ctx = hctx->ctxs[bitnr];
+ enum hctx_type type = hctx->type;
spin_lock(&ctx->lock);
- if (!list_empty(&ctx->rq_list)) {
- dispatch_data->rq = list_entry_rq(ctx->rq_list.next);
+ if (!list_empty(&ctx->rq_lists[type])) {
+ dispatch_data->rq = list_entry_rq(ctx->rq_lists[type].next);
list_del_init(&dispatch_data->rq->queuelist);
- if (list_empty(&ctx->rq_list))
+ if (list_empty(&ctx->rq_lists[type]))
sbitmap_clear_bit(sb, bitnr);
}
spin_unlock(&ctx->lock);
@@ -1608,15 +1610,16 @@ static inline void __blk_mq_insert_req_list(struct blk_mq_hw_ctx *hctx,
bool at_head)
{
struct blk_mq_ctx *ctx = rq->mq_ctx;
+ enum hctx_type type = hctx->type;
lockdep_assert_held(&ctx->lock);
trace_block_rq_insert(hctx->queue, rq);
if (at_head)
- list_add(&rq->queuelist, &ctx->rq_list);
+ list_add(&rq->queuelist, &ctx->rq_lists[type]);
else
- list_add_tail(&rq->queuelist, &ctx->rq_list);
+ list_add_tail(&rq->queuelist, &ctx->rq_lists[type]);
}
void __blk_mq_insert_request(struct blk_mq_hw_ctx *hctx, struct request *rq,
@@ -1651,6 +1654,7 @@ void blk_mq_insert_requests(struct blk_mq_hw_ctx *hctx, struct blk_mq_ctx *ctx,
{
struct request *rq;
+ enum hctx_type type = hctx->type;
/*
* preemption doesn't flush plug list, so it's possible ctx->cpu is
@@ -1662,7 +1666,7 @@ void blk_mq_insert_requests(struct blk_mq_hw_ctx *hctx, struct blk_mq_ctx *ctx,
}
spin_lock(&ctx->lock);
- list_splice_tail_init(list, &ctx->rq_list);
+ list_splice_tail_init(list, &ctx->rq_lists[type]);
blk_mq_hctx_mark_pending(hctx, ctx);
spin_unlock(&ctx->lock);
}
@@ -2200,13 +2204,15 @@ static int blk_mq_hctx_notify_dead(unsigned int cpu, struct hlist_node *node)
struct blk_mq_hw_ctx *hctx;
struct blk_mq_ctx *ctx;
LIST_HEAD(tmp);
+ enum hctx_type type;
hctx = hlist_entry_safe(node, struct blk_mq_hw_ctx, cpuhp_dead);
ctx = __blk_mq_get_ctx(hctx->queue, cpu);
+ type = hctx->type;
spin_lock(&ctx->lock);
- if (!list_empty(&ctx->rq_list)) {
- list_splice_init(&ctx->rq_list, &tmp);
+ if (!list_empty(&ctx->rq_lists[type])) {
+ list_splice_init(&ctx->rq_lists[type], &tmp);
blk_mq_hctx_clear_pending(hctx, ctx);
}
spin_unlock(&ctx->lock);
@@ -2343,10 +2349,13 @@ static void blk_mq_init_cpu_queues(struct request_queue *q,
for_each_possible_cpu(i) {
struct blk_mq_ctx *__ctx = per_cpu_ptr(q->queue_ctx, i);
struct blk_mq_hw_ctx *hctx;
+ int k;
__ctx->cpu = i;
spin_lock_init(&__ctx->lock);
- INIT_LIST_HEAD(&__ctx->rq_list);
+ for (k = HCTX_TYPE_DEFAULT; k < HCTX_MAX_TYPES; k++)
+ INIT_LIST_HEAD(&__ctx->rq_lists[k]);
+
__ctx->queue = q;
/*
diff --git a/block/blk-mq.h b/block/blk-mq.h
index d1ed096723fb0..d943d46b07854 100644
--- a/block/blk-mq.h
+++ b/block/blk-mq.h
@@ -18,8 +18,8 @@ struct blk_mq_ctxs {
struct blk_mq_ctx {
struct {
spinlock_t lock;
- struct list_head rq_list;
- } ____cacheline_aligned_in_smp;
+ struct list_head rq_lists[HCTX_MAX_TYPES];
+ } ____cacheline_aligned_in_smp;
unsigned int cpu;
unsigned short index_hw[HCTX_MAX_TYPES];
generated by cgit v1.2.3 (git 2.39.1) at 2024-05-09 07:24:06 +0000