[PATCH 3/6] blk-mq-debugfs: Show atomic request flags

[Bart Van Assche]

When analyzing e.g. queue lockups it is important to know whether
or not a request has already been started. Hence also show the
atomic request flags.

Signed-off-by: Bart Van Assche <bart.vanass...@sandisk.com>
Cc: Omar Sandoval <osan...@fb.com>
Cc: Hannes Reinecke <h...@suse.com>
---
 block/blk-mq-debugfs.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/block/blk-mq-debugfs.c b/block/blk-mq-debugfs.c
index bcd2a7d4a3a5..9cb673bc7230 100644
--- a/block/blk-mq-debugfs.c
+++ b/block/blk-mq-debugfs.c
@@ -308,6 +308,12 @@ static const char *const rqf_name[] = {
        [ilog2((__force u32)RQF_SPECIAL_PAYLOAD)]       = "SPECIAL_PAYLOAD",
 };
 
+static const char *const rqaf_name[] = {
+       [REQ_ATOM_COMPLETE]     = "COMPLETE",
+       [REQ_ATOM_STARTED]      = "STARTED",
+       [REQ_ATOM_POLL_SLEPT]   = "POLL_SLEPT",
+};
+
 static int blk_mq_debugfs_rq_show(struct seq_file *m, void *v)
 {
        struct request *rq = list_entry_rq(v);
@@ -325,6 +331,8 @@ static int blk_mq_debugfs_rq_show(struct seq_file *m, void 
*v)
        seq_puts(m, ", .rq_flags=");
        blk_flags_show(m, (__force unsigned int)rq->rq_flags, rqf_name,
                       ARRAY_SIZE(rqf_name));
+       seq_puts(m, ", .atomic_flags=");
+       blk_flags_show(m, rq->atomic_flags, rqaf_name, ARRAY_SIZE(rqaf_name));
        seq_printf(m, ", .tag=%d, .internal_tag=%d", rq->tag,
                   rq->internal_tag);
        if (mq_ops->show_rq)
-- 
2.12.2