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Diffstat (limited to 'block/blk-mq-debugfs.c')
-rw-r--r--block/blk-mq-debugfs.c165
1 files changed, 127 insertions, 38 deletions
diff --git a/block/blk-mq-debugfs.c b/block/blk-mq-debugfs.c
index cb1e6cf7ac48..7921573aebbc 100644
--- a/block/blk-mq-debugfs.c
+++ b/block/blk-mq-debugfs.c
@@ -23,6 +23,7 @@
#include "blk-mq.h"
#include "blk-mq-debugfs.h"
#include "blk-mq-tag.h"
+#include "blk-rq-qos.h"
static void print_stat(struct seq_file *m, struct blk_rq_stat *stat)
{
@@ -102,12 +103,18 @@ static int blk_flags_show(struct seq_file *m, const unsigned long flags,
return 0;
}
+static int queue_pm_only_show(void *data, struct seq_file *m)
+{
+ struct request_queue *q = data;
+
+ seq_printf(m, "%d\n", atomic_read(&q->pm_only));
+ return 0;
+}
+
#define QUEUE_FLAG_NAME(name) [QUEUE_FLAG_##name] = #name
static const char *const blk_queue_flag_name[] = {
- QUEUE_FLAG_NAME(QUEUED),
QUEUE_FLAG_NAME(STOPPED),
QUEUE_FLAG_NAME(DYING),
- QUEUE_FLAG_NAME(BYPASS),
QUEUE_FLAG_NAME(BIDI),
QUEUE_FLAG_NAME(NOMERGES),
QUEUE_FLAG_NAME(SAME_COMP),
@@ -132,7 +139,6 @@ static const char *const blk_queue_flag_name[] = {
QUEUE_FLAG_NAME(REGISTERED),
QUEUE_FLAG_NAME(SCSI_PASSTHROUGH),
QUEUE_FLAG_NAME(QUIESCED),
- QUEUE_FLAG_NAME(PREEMPT_ONLY),
};
#undef QUEUE_FLAG_NAME
@@ -209,6 +215,7 @@ static ssize_t queue_write_hint_store(void *data, const char __user *buf,
static const struct blk_mq_debugfs_attr blk_mq_debugfs_queue_attrs[] = {
{ "poll_stat", 0400, queue_poll_stat_show },
{ "requeue_list", 0400, .seq_ops = &queue_requeue_list_seq_ops },
+ { "pm_only", 0600, queue_pm_only_show, NULL },
{ "state", 0600, queue_state_show, queue_state_write },
{ "write_hints", 0600, queue_write_hint_show, queue_write_hint_store },
{ "zone_wlock", 0400, queue_zone_wlock_show, NULL },
@@ -275,7 +282,6 @@ static const char *const op_name[] = {
REQ_OP_NAME(WRITE),
REQ_OP_NAME(FLUSH),
REQ_OP_NAME(DISCARD),
- REQ_OP_NAME(ZONE_REPORT),
REQ_OP_NAME(SECURE_ERASE),
REQ_OP_NAME(ZONE_RESET),
REQ_OP_NAME(WRITE_SAME),
@@ -302,8 +308,9 @@ static const char *const cmd_flag_name[] = {
CMD_FLAG_NAME(PREFLUSH),
CMD_FLAG_NAME(RAHEAD),
CMD_FLAG_NAME(BACKGROUND),
- CMD_FLAG_NAME(NOUNMAP),
CMD_FLAG_NAME(NOWAIT),
+ CMD_FLAG_NAME(NOUNMAP),
+ CMD_FLAG_NAME(HIPRI),
};
#undef CMD_FLAG_NAME
@@ -311,7 +318,6 @@ static const char *const cmd_flag_name[] = {
static const char *const rqf_name[] = {
RQF_NAME(SORTED),
RQF_NAME(STARTED),
- RQF_NAME(QUEUED),
RQF_NAME(SOFTBARRIER),
RQF_NAME(FLUSH_SEQ),
RQF_NAME(MIXED_MERGE),
@@ -417,16 +423,18 @@ struct show_busy_params {
/*
* Note: the state of a request may change while this function is in progress,
- * e.g. due to a concurrent blk_mq_finish_request() call.
+ * e.g. due to a concurrent blk_mq_finish_request() call. Returns true to
+ * keep iterating requests.
*/
-static void hctx_show_busy_rq(struct request *rq, void *data, bool reserved)
+static bool hctx_show_busy_rq(struct request *rq, void *data, bool reserved)
{
const struct show_busy_params *params = data;
- if (blk_mq_map_queue(rq->q, rq->mq_ctx->cpu) == params->hctx &&
- blk_mq_rq_state(rq) != MQ_RQ_IDLE)
+ if (rq->mq_hctx == params->hctx)
__blk_mq_debugfs_rq_show(params->m,
list_entry_rq(&rq->queuelist));
+
+ return true;
}
static int hctx_busy_show(void *data, struct seq_file *m)
@@ -440,6 +448,21 @@ static int hctx_busy_show(void *data, struct seq_file *m)
return 0;
}
+static const char *const hctx_types[] = {
+ [HCTX_TYPE_DEFAULT] = "default",
+ [HCTX_TYPE_READ] = "read",
+ [HCTX_TYPE_POLL] = "poll",
+};
+
+static int hctx_type_show(void *data, struct seq_file *m)
+{
+ struct blk_mq_hw_ctx *hctx = data;
+
+ BUILD_BUG_ON(ARRAY_SIZE(hctx_types) != HCTX_MAX_TYPES);
+ seq_printf(m, "%s\n", hctx_types[hctx->type]);
+ return 0;
+}
+
static int hctx_ctx_map_show(void *data, struct seq_file *m)
{
struct blk_mq_hw_ctx *hctx = data;
@@ -630,36 +653,43 @@ 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, \
}
-static void ctx_rq_list_stop(struct seq_file *m, void *v)
- __releases(&ctx->lock)
-{
- struct blk_mq_ctx *ctx = m->private;
+CTX_RQ_SEQ_OPS(default, HCTX_TYPE_DEFAULT);
+CTX_RQ_SEQ_OPS(read, HCTX_TYPE_READ);
+CTX_RQ_SEQ_OPS(poll, HCTX_TYPE_POLL);
- 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;
@@ -792,11 +822,14 @@ static const struct blk_mq_debugfs_attr blk_mq_debugfs_hctx_attrs[] = {
{"run", 0600, hctx_run_show, hctx_run_write},
{"active", 0400, hctx_active_show},
{"dispatch_busy", 0400, hctx_dispatch_busy_show},
+ {"type", 0400, hctx_type_show},
{},
};
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},
@@ -806,6 +839,9 @@ static const struct blk_mq_debugfs_attr blk_mq_debugfs_ctx_attrs[] = {
static bool debugfs_create_files(struct dentry *parent, void *data,
const struct blk_mq_debugfs_attr *attr)
{
+ if (IS_ERR_OR_NULL(parent))
+ return false;
+
d_inode(parent)->i_private = data;
for (; attr->name; attr++) {
@@ -850,6 +886,15 @@ int blk_mq_debugfs_register(struct request_queue *q)
goto err;
}
+ if (q->rq_qos) {
+ struct rq_qos *rqos = q->rq_qos;
+
+ while (rqos) {
+ blk_mq_debugfs_register_rqos(rqos);
+ rqos = rqos->next;
+ }
+ }
+
return 0;
err:
@@ -972,6 +1017,50 @@ void blk_mq_debugfs_unregister_sched(struct request_queue *q)
q->sched_debugfs_dir = NULL;
}
+void blk_mq_debugfs_unregister_rqos(struct rq_qos *rqos)
+{
+ debugfs_remove_recursive(rqos->debugfs_dir);
+ rqos->debugfs_dir = NULL;
+}
+
+int blk_mq_debugfs_register_rqos(struct rq_qos *rqos)
+{
+ struct request_queue *q = rqos->q;
+ const char *dir_name = rq_qos_id_to_name(rqos->id);
+
+ if (!q->debugfs_dir)
+ return -ENOENT;
+
+ if (rqos->debugfs_dir || !rqos->ops->debugfs_attrs)
+ return 0;
+
+ if (!q->rqos_debugfs_dir) {
+ q->rqos_debugfs_dir = debugfs_create_dir("rqos",
+ q->debugfs_dir);
+ if (!q->rqos_debugfs_dir)
+ return -ENOMEM;
+ }
+
+ rqos->debugfs_dir = debugfs_create_dir(dir_name,
+ rqos->q->rqos_debugfs_dir);
+ if (!rqos->debugfs_dir)
+ return -ENOMEM;
+
+ if (!debugfs_create_files(rqos->debugfs_dir, rqos,
+ rqos->ops->debugfs_attrs))
+ goto err;
+ return 0;
+ err:
+ blk_mq_debugfs_unregister_rqos(rqos);
+ return -ENOMEM;
+}
+
+void blk_mq_debugfs_unregister_queue_rqos(struct request_queue *q)
+{
+ debugfs_remove_recursive(q->rqos_debugfs_dir);
+ q->rqos_debugfs_dir = NULL;
+}
+
int blk_mq_debugfs_register_sched_hctx(struct request_queue *q,
struct blk_mq_hw_ctx *hctx)
{
generated by cgit 1.2.3-korg (git 2.39.0) at 2024-04-26 11:18:53 +0000