Commit 6a0164f9 authored by Guixin Liu's avatar Guixin Liu Committed by Keith Busch
Browse files

nvme: add tracing of reservation commands 



Add detailed parsing of reservation commands to make the trace log
more consistent and human-readable.

Signed-off-by: default avatarGuixin Liu <kanie@linux.alibaba.com>
Reviewed-by: default avatarChristoph Hellwig <hch@lst.de>
Reviewed-by: default avatarSagi Grimberg <sagi@grimberg.me>
Signed-off-by: default avatarKeith Busch <kbusch@kernel.org>
parent 8d539f75

drivers/nvme/host/trace.c

+62 −0
Original line number Diff line number Diff line
@@ -223,6 +223,60 @@ static const char *nvme_trace_zone_mgmt_recv(struct trace_seq *p, u8 *cdw10) 
	return ret;

}



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

{

	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;



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

			 rrega, iekey, ptpl);

	trace_seq_putc(p, 0);



	return ret;

}



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

{

	const char *ret = trace_seq_buffer_ptr(p);

	u8 racqa = cdw10[0] & 0x7;

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

	u8 rtype = cdw10[1];



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

			 racqa, iekey, rtype);

	trace_seq_putc(p, 0);



	return ret;

}



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

{

	const char *ret = trace_seq_buffer_ptr(p);

	u8 rrela = cdw10[0] & 0x7;

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

	u8 rtype = cdw10[1];



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

			 rrela, iekey, rtype);

	trace_seq_putc(p, 0);



	return ret;

}



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

{

	const char *ret = trace_seq_buffer_ptr(p);

	u32 numd = get_unaligned_le32(cdw10);

	u8 eds = cdw10[4] & 0x1;



	trace_seq_printf(p, "numd=%u, eds=%u", numd, eds);

	trace_seq_putc(p, 0);



	return ret;

}



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

{

	const char *ret = trace_seq_buffer_ptr(p);
@@ -275,6 +329,14 @@ const char *nvme_trace_parse_nvm_cmd(struct trace_seq *p, 
		return nvme_trace_zone_mgmt_send(p, cdw10);

	case nvme_cmd_zone_mgmt_recv:

		return nvme_trace_zone_mgmt_recv(p, cdw10);

	case nvme_cmd_resv_register:

		return nvme_trace_resv_reg(p, cdw10);

	case nvme_cmd_resv_acquire:

		return nvme_trace_resv_acq(p, cdw10);

	case nvme_cmd_resv_release:

		return nvme_trace_resv_rel(p, cdw10);

	case nvme_cmd_resv_report:

		return nvme_trace_resv_report(p, cdw10);

	default:

		return nvme_trace_common(p, cdw10);

	}