Commit 2bc91743 authored by Guixin Liu's avatar Guixin Liu Committed by Keith Busch
Browse files

nvmet: add tracing of zns commands 



Add nvme_cmd_zone_append, nvme_cmd_zone_mgmt_send and
nvme_cmd_zone_mgmt_recv parse to nvme target tracing.

Signed-off-by: default avatarGuixin Liu <kanie@linux.alibaba.com>
Reviewed-by: default avatarChaitanya Kulkarni <kch@nvidia.com>
Reviewed-by: default avatarSagi Grimberg <sagi@grimberg.me>
Signed-off-by: default avatarKeith Busch <kbusch@kernel.org>
parent 8fc3b0f1

drivers/nvme/target/trace.c

+66 −0
Original line number Diff line number Diff line
@@ -119,6 +119,67 @@ const char *nvmet_trace_parse_admin_cmd(struct trace_seq *p, 
	}

}



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

{

	static const char * const zsa_strs[] = {

		[0x01] = "close zone",

		[0x02] = "finish zone",

		[0x03] = "open zone",

		[0x04] = "reset zone",

		[0x05] = "offline zone",

		[0x10] = "set zone descriptor extension"

	};

	const char *ret = trace_seq_buffer_ptr(p);

	u64 slba = get_unaligned_le64(cdw10);

	const char *zsa_str;

	u8 zsa = cdw10[12];

	u8 all = cdw10[13];



	if (zsa < ARRAY_SIZE(zsa_strs) && zsa_strs[zsa])

		zsa_str = zsa_strs[zsa];

	else

		zsa_str = "reserved";



	trace_seq_printf(p, "slba=%llu, zsa=%u:%s, all=%u",

		slba, zsa, zsa_str, all);

	trace_seq_putc(p, 0);



	return ret;

}



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

{

	static const char * const zrasf_strs[] = {

		[0x00] = "list all zones",

		[0x01] = "list the zones in the ZSE: Empty state",

		[0x02] = "list the zones in the ZSIO: Implicitly Opened state",

		[0x03] = "list the zones in the ZSEO: Explicitly Opened state",

		[0x04] = "list the zones in the ZSC: Closed state",

		[0x05] = "list the zones in the ZSF: Full state",

		[0x06] = "list the zones in the ZSRO: Read Only state",

		[0x07] = "list the zones in the ZSO: Offline state",

		[0x09] = "list the zones that have the zone attribute"

	};

	const char *ret = trace_seq_buffer_ptr(p);

	u64 slba = get_unaligned_le64(cdw10);

	u32 numd = get_unaligned_le32(&cdw10[8]);

	u8 zra = cdw10[12];

	u8 zrasf = cdw10[13];

	const char *zrasf_str;

	u8 pr = cdw10[14];



	if (zrasf < ARRAY_SIZE(zrasf_strs) && zrasf_strs[zrasf])

		zrasf_str = zrasf_strs[zrasf];

	else

		zrasf_str = "reserved";



	trace_seq_printf(p, "slba=%llu, numd=%u, zra=%u, zrasf=%u:%s, pr=%u",

		slba, numd, zra, zrasf, zrasf_str, pr);

	trace_seq_putc(p, 0);



	return ret;

}



const char *nvmet_trace_parse_nvm_cmd(struct trace_seq *p,

		u8 opcode, u8 *cdw10)

{
@@ -126,9 +187,14 @@ const char *nvmet_trace_parse_nvm_cmd(struct trace_seq *p, 
	case nvme_cmd_read:

	case nvme_cmd_write:

	case nvme_cmd_write_zeroes:

	case nvme_cmd_zone_append:

		return nvmet_trace_read_write(p, cdw10);

	case nvme_cmd_dsm:

		return nvmet_trace_dsm(p, cdw10);

	case nvme_cmd_zone_mgmt_send:

		return nvmet_trace_zone_mgmt_send(p, cdw10);

	case nvme_cmd_zone_mgmt_recv:

		return nvmet_trace_zone_mgmt_recv(p, cdw10);

	default:

		return nvmet_trace_common(p, cdw10);

	}