[PATCH 0/2] Add the tracing of reservation commands

[PATCH 0/2] Add the tracing of reservation commands

[Guixin Liu]

Host:
- Parse the action and rtype to string.
Target:
- Add the tracing of reservation commands, and also parse actions
 rtype to string.

Guixin Liu (2):
  nvme: parse reservation commands's action and rtype to string
  nvmet: add tracing of reservation commands

 drivers/nvme/host/trace.c   |  58 +++++++++++++++++--
 drivers/nvme/target/trace.c | 108 ++++++++++++++++++++++++++++++++++++
 2 files changed, 160 insertions(+), 6 deletions(-)

-- 
2.43.0

[PATCH 1/2] nvme: parse reservation commands's action and rtype to string

[Guixin Liu]

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: Guixin Liu <kanie@linux.alibaba.com>
---
 drivers/nvme/host/trace.c | 58 +++++++++++++++++++++++++++++++++++----
 1 file changed, 52 insertions(+), 6 deletions(-)

diff --git a/drivers/nvme/host/trace.c b/drivers/nvme/host/trace.c
index 87c437fc070d..ad25ad1e4041 100644
--- a/drivers/nvme/host/trace.c
+++ b/drivers/nvme/host/trace.c
@@ -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;
-- 
2.43.0

Re: [PATCH 1/2] nvme: parse reservation commands's action and rtype to string

[Chaitanya Kulkarni]

On 10/14/24 03:14, Guixin Liu wrote:
> 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: Guixin Liu<kanie@linux.alibaba.com>

Looks good.

Reviewed-by: Chaitanya Kulkarni <kch@nvidia.com>

-ck

Re: [PATCH 1/2] nvme: parse reservation commands's action and rtype to string

[Christoph Hellwig]

Looks good:

Reviewed-by: Christoph Hellwig <hch@lst.de>

Re: [PATCH 1/2] nvme: parse reservation commands's action and rtype to string

[Sagi Grimberg]

Reviewed-by: Sagi Grimberg <sagi@grimberg.me>

[PATCH 2/2] nvmet: add tracing of reservation commands

[Guixin Liu]

Add tracing of reservation commands, including register, acquire,
release and report, and also parse the action and rtype to string
to make the trace log more human-readable.

Signed-off-by: Guixin Liu <kanie@linux.alibaba.com>
---
 drivers/nvme/target/trace.c | 108 ++++++++++++++++++++++++++++++++++++
 1 file changed, 108 insertions(+)

diff --git a/drivers/nvme/target/trace.c b/drivers/nvme/target/trace.c
index 9a3548179a8e..6dbc7036f2e4 100644
--- a/drivers/nvme/target/trace.c
+++ b/drivers/nvme/target/trace.c
@@ -180,6 +180,106 @@ static const char *nvmet_trace_zone_mgmt_recv(struct trace_seq *p, u8 *cdw10)
 	return ret;
 }
 
+static const char *nvmet_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:%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 *nvmet_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";
+
+	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;
+}
+
+static const char *nvmet_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:%s, iekey=%u, rtype=%u:%s",
+			 rrela, rrela_str, iekey, rtype, rtype_str);
+	trace_seq_putc(p, 0);
+
+	return ret;
+}
+
+static const char *nvmet_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;
+}
+
 const char *nvmet_trace_parse_nvm_cmd(struct trace_seq *p,
 		u8 opcode, u8 *cdw10)
 {
@@ -195,6 +295,14 @@ const char *nvmet_trace_parse_nvm_cmd(struct trace_seq *p,
 		return nvmet_trace_zone_mgmt_send(p, cdw10);
 	case nvme_cmd_zone_mgmt_recv:
 		return nvmet_trace_zone_mgmt_recv(p, cdw10);
+	case nvme_cmd_resv_register:
+		return nvmet_trace_resv_reg(p, cdw10);
+	case nvme_cmd_resv_acquire:
+		return nvmet_trace_resv_acq(p, cdw10);
+	case nvme_cmd_resv_release:
+		return nvmet_trace_resv_rel(p, cdw10);
+	case nvme_cmd_resv_report:
+		return nvmet_trace_resv_report(p, cdw10);
 	default:
 		return nvmet_trace_common(p, cdw10);
 	}
-- 
2.43.0

Re: [PATCH 2/2] nvmet: add tracing of reservation commands

[Chaitanya Kulkarni]

On 10/14/24 03:14, Guixin Liu wrote:
> Add tracing of reservation commands, including register, acquire,
> release and report, and also parse the action and rtype to string
> to make the trace log more human-readable.
>
> Signed-off-by: Guixin Liu<kanie@linux.alibaba.com>
> ---

Looks good.

Reviewed-by: Chaitanya Kulkarni <kch@nvidia.com>

-ck

Re: [PATCH 2/2] nvmet: add tracing of reservation commands

[Christoph Hellwig]

Looks good:

Reviewed-by: Christoph Hellwig <hch@lst.de>

Re: [PATCH 2/2] nvmet: add tracing of reservation commands

[Sagi Grimberg]

Reviewed-by: Sagi Grimberg <sagi@grimberg.me>**

Re: [PATCH 0/2] Add the tracing of reservation commands

[Guixin Liu]

Hi Keith,

     I found that this patchset is not aplied yet, could you please take 
a look?

Best Regards,

Guixin Liu

在 2024/10/14 18:14, Guixin Liu 写道:
> Host:
> - Parse the action and rtype to string.
> Target:
> - Add the tracing of reservation commands, and also parse actions
>   rtype to string.
>
> Guixin Liu (2):
>    nvme: parse reservation commands's action and rtype to string
>    nvmet: add tracing of reservation commands
>
>   drivers/nvme/host/trace.c   |  58 +++++++++++++++++--
>   drivers/nvme/target/trace.c | 108 ++++++++++++++++++++++++++++++++++++
>   2 files changed, 160 insertions(+), 6 deletions(-)
>

Re: [PATCH 0/2] Add the tracing of reservation commands

[Keith Busch]

On Mon, Oct 14, 2024 at 06:14:56PM +0800, Guixin Liu wrote:
> Host:
> - Parse the action and rtype to string.
> Target:
> - Add the tracing of reservation commands, and also parse actions
>  rtype to string.
> 
> Guixin Liu (2):
>   nvme: parse reservation commands's action and rtype to string
>   nvmet: add tracing of reservation commands

Thanks, applied to nvme-6.13.