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Commit 8658dca8 authored by Bart Van Assche's avatar Bart Van Assche Committed by Jens Axboe
Browse files

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: default avatarBart Van Assche <bart.vanassche@sandisk.com>
Reviewed-by: default avatarOmar Sandoval <osandov@fb.com>
Reviewed-by: default avatarHannes Reinecke <hare@suse.com>
Signed-off-by: default avatarJens Axboe <axboe@fb.com>
parent fd07dc81

block/blk-mq-debugfs.c

+69 −3
Original line number Diff line number Diff line
@@ -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;

}