Commit 8a502b5c authored by Guixin Liu's avatar Guixin Liu Committed by Keith Busch
Browse files

nvme: parse reservation commands's action and rtype to string 



Parse reservation commands's action(including rrega, racqa and rrela)
and rtype to string to make the trace log more human-readable.

Signed-off-by: default avatarGuixin Liu <kanie@linux.alibaba.com>
Reviewed-by: default avatarSagi Grimberg <sagi@grimberg.me>
Reviewed-by: default avatarChristoph Hellwig <hch@lst.de>
Reviewed-by: default avatarChaitanya Kulkarni <kch@nvidia.com>
Signed-off-by: default avatarKeith Busch <kbusch@kernel.org>
parent 609e60a3

drivers/nvme/host/trace.c

+52 −6
Original line number Diff line number Diff line
@@ -228,27 +228,61 @@ static const char *nvme_trace_zone_mgmt_recv(struct trace_seq *p, u8 *cdw10) 


static const char *nvme_trace_resv_reg(struct trace_seq *p, u8 *cdw10)

{

	static const char * const rrega_strs[] = {

		[0x00] = "register",

		[0x01] = "unregister",

		[0x02] = "replace",

	};

	const char *ret = trace_seq_buffer_ptr(p);

	u8 rrega = cdw10[0] & 0x7;

	u8 iekey = (cdw10[0] >> 3) & 0x1;

	u8 ptpl = (cdw10[3] >> 6) & 0x3;

	const char *rrega_str;



	if (rrega < ARRAY_SIZE(rrega_strs) && rrega_strs[rrega])

		rrega_str = rrega_strs[rrega];

	else

		rrega_str = "reserved";



	trace_seq_printf(p, "rrega=%u, iekey=%u, ptpl=%u",

			 rrega, iekey, ptpl);

	trace_seq_printf(p, "rrega=%u:%s, iekey=%u, ptpl=%u",

			 rrega, rrega_str, iekey, ptpl);

	trace_seq_putc(p, 0);



	return ret;

}



static const char * const rtype_strs[] = {

	[0x00] = "reserved",

	[0x01] = "write exclusive",

	[0x02] = "exclusive access",

	[0x03] = "write exclusive registrants only",

	[0x04] = "exclusive access registrants only",

	[0x05] = "write exclusive all registrants",

	[0x06] = "exclusive access all registrants",

};



static const char *nvme_trace_resv_acq(struct trace_seq *p, u8 *cdw10)

{

	static const char * const racqa_strs[] = {

		[0x00] = "acquire",

		[0x01] = "preempt",

		[0x02] = "preempt and abort",

	};

	const char *ret = trace_seq_buffer_ptr(p);

	u8 racqa = cdw10[0] & 0x7;

	u8 iekey = (cdw10[0] >> 3) & 0x1;

	u8 rtype = cdw10[1];

	const char *racqa_str = "reserved";

	const char *rtype_str = "reserved";



	trace_seq_printf(p, "racqa=%u, iekey=%u, rtype=%u",

			 racqa, iekey, rtype);

	if (racqa < ARRAY_SIZE(racqa_strs) && racqa_strs[racqa])

		racqa_str = racqa_strs[racqa];



	if (rtype < ARRAY_SIZE(rtype_strs) && rtype_strs[rtype])

		rtype_str = rtype_strs[rtype];



	trace_seq_printf(p, "racqa=%u:%s, iekey=%u, rtype=%u:%s",

			 racqa, racqa_str, iekey, rtype, rtype_str);

	trace_seq_putc(p, 0);



	return ret;
@@ -256,13 +290,25 @@ static const char *nvme_trace_resv_acq(struct trace_seq *p, u8 *cdw10) 


static const char *nvme_trace_resv_rel(struct trace_seq *p, u8 *cdw10)

{

	static const char * const rrela_strs[] = {

		[0x00] = "release",

		[0x01] = "clear",

	};

	const char *ret = trace_seq_buffer_ptr(p);

	u8 rrela = cdw10[0] & 0x7;

	u8 iekey = (cdw10[0] >> 3) & 0x1;

	u8 rtype = cdw10[1];

	const char *rrela_str = "reserved";

	const char *rtype_str = "reserved";



	if (rrela < ARRAY_SIZE(rrela_strs) && rrela_strs[rrela])

		rrela_str = rrela_strs[rrela];



	if (rtype < ARRAY_SIZE(rtype_strs) && rtype_strs[rtype])

		rtype_str = rtype_strs[rtype];



	trace_seq_printf(p, "rrela=%u, iekey=%u, rtype=%u",

			 rrela, iekey, rtype);

	trace_seq_printf(p, "rrela=%u:%s, iekey=%u, rtype=%u:%s",

			 rrela, rrela_str, iekey, rtype, rtype_str);

	trace_seq_putc(p, 0);



	return ret;