From 8658dca8bd5666f50e02400f844079e520641d8c Mon Sep 17 00:00:00 2001 From: Bart Van Assche Date: Wed, 26 Apr 2017 13:47:55 -0700 Subject: [PATCH] blk-mq: Show operation, cmd_flags and rq_flags names Show the operation name, .cmd_flags and .rq_flags as names instead of numbers. Signed-off-by: Bart Van Assche Reviewed-by: Omar Sandoval Reviewed-by: Hannes Reinecke Signed-off-by: Jens Axboe --- block/blk-mq-debugfs.c | 72 ++++++++++++++++++++++++++++++++++++++++-- 1 file changed, 69 insertions(+), 3 deletions(-) diff --git a/block/blk-mq-debugfs.c b/block/blk-mq-debugfs.c index ccc7b0f71230..ac39093c4ef7 100644 --- a/block/blk-mq-debugfs.c +++ b/block/blk-mq-debugfs.c @@ -253,13 +253,79 @@ static const struct file_operations hctx_flags_fops = { .release = single_release, }; +static const char *const op_name[] = { + [REQ_OP_READ] = "READ", + [REQ_OP_WRITE] = "WRITE", + [REQ_OP_FLUSH] = "FLUSH", + [REQ_OP_DISCARD] = "DISCARD", + [REQ_OP_ZONE_REPORT] = "ZONE_REPORT", + [REQ_OP_SECURE_ERASE] = "SECURE_ERASE", + [REQ_OP_ZONE_RESET] = "ZONE_RESET", + [REQ_OP_WRITE_SAME] = "WRITE_SAME", + [REQ_OP_WRITE_ZEROES] = "WRITE_ZEROES", + [REQ_OP_SCSI_IN] = "SCSI_IN", + [REQ_OP_SCSI_OUT] = "SCSI_OUT", + [REQ_OP_DRV_IN] = "DRV_IN", + [REQ_OP_DRV_OUT] = "DRV_OUT", +}; + +static const char *const cmd_flag_name[] = { + [__REQ_FAILFAST_DEV] = "FAILFAST_DEV", + [__REQ_FAILFAST_TRANSPORT] = "FAILFAST_TRANSPORT", + [__REQ_FAILFAST_DRIVER] = "FAILFAST_DRIVER", + [__REQ_SYNC] = "SYNC", + [__REQ_META] = "META", + [__REQ_PRIO] = "PRIO", + [__REQ_NOMERGE] = "NOMERGE", + [__REQ_IDLE] = "IDLE", + [__REQ_INTEGRITY] = "INTEGRITY", + [__REQ_FUA] = "FUA", + [__REQ_PREFLUSH] = "PREFLUSH", + [__REQ_RAHEAD] = "RAHEAD", + [__REQ_BACKGROUND] = "BACKGROUND", + [__REQ_NR_BITS] = "NR_BITS", +}; + +static const char *const rqf_name[] = { + [ilog2((__force u32)RQF_SORTED)] = "SORTED", + [ilog2((__force u32)RQF_STARTED)] = "STARTED", + [ilog2((__force u32)RQF_QUEUED)] = "QUEUED", + [ilog2((__force u32)RQF_SOFTBARRIER)] = "SOFTBARRIER", + [ilog2((__force u32)RQF_FLUSH_SEQ)] = "FLUSH_SEQ", + [ilog2((__force u32)RQF_MIXED_MERGE)] = "MIXED_MERGE", + [ilog2((__force u32)RQF_MQ_INFLIGHT)] = "MQ_INFLIGHT", + [ilog2((__force u32)RQF_DONTPREP)] = "DONTPREP", + [ilog2((__force u32)RQF_PREEMPT)] = "PREEMPT", + [ilog2((__force u32)RQF_COPY_USER)] = "COPY_USER", + [ilog2((__force u32)RQF_FAILED)] = "FAILED", + [ilog2((__force u32)RQF_QUIET)] = "QUIET", + [ilog2((__force u32)RQF_ELVPRIV)] = "ELVPRIV", + [ilog2((__force u32)RQF_IO_STAT)] = "IO_STAT", + [ilog2((__force u32)RQF_ALLOCED)] = "ALLOCED", + [ilog2((__force u32)RQF_PM)] = "PM", + [ilog2((__force u32)RQF_HASHED)] = "HASHED", + [ilog2((__force u32)RQF_STATS)] = "STATS", + [ilog2((__force u32)RQF_SPECIAL_PAYLOAD)] = "SPECIAL_PAYLOAD", +}; + static int blk_mq_debugfs_rq_show(struct seq_file *m, void *v) { struct request *rq = list_entry_rq(v); + const unsigned int op = rq->cmd_flags & REQ_OP_MASK; - seq_printf(m, "%p {.cmd_flags=0x%x, .rq_flags=0x%x, .tag=%d, .internal_tag=%d}\n", - rq, rq->cmd_flags, (__force unsigned int)rq->rq_flags, - rq->tag, rq->internal_tag); + seq_printf(m, "%p {.op=", rq); + if (op < ARRAY_SIZE(op_name) && op_name[op]) + seq_printf(m, "%s", op_name[op]); + else + seq_printf(m, "%d", op); + seq_puts(m, ", .cmd_flags="); + blk_flags_show(m, rq->cmd_flags & ~REQ_OP_MASK, cmd_flag_name, + ARRAY_SIZE(cmd_flag_name)); + seq_puts(m, ", .rq_flags="); + blk_flags_show(m, (__force unsigned int)rq->rq_flags, rqf_name, + ARRAY_SIZE(rqf_name)); + seq_printf(m, ", .tag=%d, .internal_tag=%d}\n", rq->tag, + rq->internal_tag); return 0; } -- GitLab