Commit 3a98c51a authored by Michal Krakowiak's avatar Michal Krakowiak Committed by Christoph Hellwig
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nvme: parse format nvm command details when tracing 



Add detailed parsing of format nvm admin command to make the
trace log more consistent and human-readable.

Signed-off-by: default avatarMichal Krakowiak <michal.krakowiak@intel.com>
Acked-by: default avatarDan Williams <dan.j.williams@intel.com>
Reviewed-by: default avatarMinwoo Im <minwoo.im.dev@gmail.com>
Signed-off-by: default avatarChristoph Hellwig <hch@lst.de>
parent 3254899e

drivers/nvme/host/trace.c

+19 −0
Original line number Diff line number Diff line
@@ -102,6 +102,23 @@ static const char *nvme_trace_get_lba_status(struct trace_seq *p, 
	return ret;

}



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

{

	const char *ret = trace_seq_buffer_ptr(p);

	u8 lbaf = cdw10[0] & 0xF;

	u8 mset = (cdw10[0] >> 4) & 0x1;

	u8 pi = (cdw10[0] >> 5) & 0x7;

	u8 pil = cdw10[1] & 0x1;

	u8 ses = (cdw10[1] >> 1) & 0x7;



	trace_seq_printf(p, "lbaf=%u, mset=%u, pi=%u, pil=%u, ses=%u",

			lbaf, mset, pi, pil, ses);



	trace_seq_putc(p, 0);



	return ret;

}



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

{

	const char *ret = trace_seq_buffer_ptr(p);
@@ -159,6 +176,8 @@ const char *nvme_trace_parse_admin_cmd(struct trace_seq *p, 
		return nvme_trace_admin_get_features(p, cdw10);

	case nvme_admin_get_lba_status:

		return nvme_trace_get_lba_status(p, cdw10);

	case nvme_admin_format_nvm:

		return nvme_trace_admin_format_nvm(p, cdw10);

	default:

		return nvme_trace_common(p, cdw10);

	}