[PATCH v2 0/3] *** nvme: add some commands tracing ***

[PATCH v2 0/3] *** nvme: add some commands tracing ***

[Guixin Liu]

Hi guys:
    I found that there are no reservation commands tracing and some
commands's parsing aren't fit the newest NVMe spec, and aren't readble.

Changes from v1 to v2:
- Remove idr and idw parsing of dsm command.

- Remove lbafl and lbafu variables and add a comment for the lbaf
calculation in nvme_trace_admin_format_nvm().

Guixin Liu (3):
  nvme: add tracing of reservation commands
  nvme: parse dsm command's attr deallocate when tracing
  nvme: parse format command's lbafu when tracing

 drivers/nvme/host/trace.c | 73 ++++++++++++++++++++++++++++++++++++---
 1 file changed, 69 insertions(+), 4 deletions(-)

-- 
2.43.0

[PATCH v2 1/3] nvme: add tracing of reservation commands

[Guixin Liu]

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

Signed-off-by: Guixin Liu <kanie@linux.alibaba.com>
---
 drivers/nvme/host/trace.c | 62 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 62 insertions(+)

diff --git a/drivers/nvme/host/trace.c b/drivers/nvme/host/trace.c
index 1c36fcedea20..95572c85b22a 100644
--- a/drivers/nvme/host/trace.c
+++ b/drivers/nvme/host/trace.c
@@ -191,6 +191,60 @@ 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);
@@ -243,6 +297,14 @@ 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);
 	}
-- 
2.43.0

[PATCH v2 2/3] nvme: parse dsm command's attr deallocate when tracing

[Guixin Liu]

Add parse of dsm command's attr deallocate to make the trace log
more consistent and human-readable.

Signed-off-by: Guixin Liu <kanie@linux.alibaba.com>
---
 drivers/nvme/host/trace.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/nvme/host/trace.c b/drivers/nvme/host/trace.c
index 95572c85b22a..4b8924abb4e1 100644
--- a/drivers/nvme/host/trace.c
+++ b/drivers/nvme/host/trace.c
@@ -153,10 +153,10 @@ static const char *nvme_trace_read_write(struct trace_seq *p, u8 *cdw10)
 static const char *nvme_trace_dsm(struct trace_seq *p, u8 *cdw10)
 {
 	const char *ret = trace_seq_buffer_ptr(p);
+	u8 nr = cdw10[0];
+	u8 ad = (cdw10[4] >> 2) & 0x1;
 
-	trace_seq_printf(p, "nr=%u, attributes=%u",
-			 get_unaligned_le32(cdw10),
-			 get_unaligned_le32(cdw10 + 4));
+	trace_seq_printf(p, "nr=%u, ad=%u", nr, ad);
 	trace_seq_putc(p, 0);
 
 	return ret;
-- 
2.43.0

[PATCH v2 3/3] nvme: parse format command's lbafu when tracing

[Guixin Liu]

Add the parse of format command's lbafu to calculate lbaf.

Signed-off-by: Guixin Liu <kanie@linux.alibaba.com>
---
 drivers/nvme/host/trace.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/nvme/host/trace.c b/drivers/nvme/host/trace.c
index 4b8924abb4e1..7b752ee47f36 100644
--- a/drivers/nvme/host/trace.c
+++ b/drivers/nvme/host/trace.c
@@ -119,7 +119,10 @@ static const char *nvme_trace_get_lba_status(struct trace_seq *p,
 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;
+	/*
+	 * lbafu(bit 13:12) is already in the upper 4 bits, lbafl: bit 03:00.
+	 */
+	u8 lbaf = (cdw10[1] & 0x30) | (cdw10[0] & 0xF);
 	u8 mset = (cdw10[0] >> 4) & 0x1;
 	u8 pi = (cdw10[0] >> 5) & 0x7;
 	u8 pil = cdw10[1] & 0x1;
-- 
2.43.0

Re: [PATCH v2 1/3] nvme: add tracing of reservation commands

[Sagi Grimberg]

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

Re: [PATCH v2 2/3] nvme: parse dsm command's attr deallocate when tracing

[Sagi Grimberg]

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

Re: [PATCH v2 1/3] nvme: add tracing of reservation commands

[Christoph Hellwig]

Looks good:

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

Re: [PATCH v2 2/3] nvme: parse dsm command's attr deallocate when tracing

[Christoph Hellwig]

Looks good:

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

Re: [PATCH v2 3/3] nvme: parse format command's lbafu when tracing

[Christoph Hellwig]

Looks good:

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

Re: [PATCH v2 0/3] *** nvme: add some commands tracing ***

[Chaitanya Kulkarni]

Guixin,

On 1/31/24 01:12, Guixin Liu wrote:
> Hi guys:
>      I found that there are no reservation commands tracing and some
> commands's parsing aren't fit the newest NVMe spec, and aren't readble.
>
> Changes from v1 to v2:
> - Remove idr and idw parsing of dsm command.
>
> - Remove lbafl and lbafu variables and add a comment for the lbaf
> calculation in nvme_trace_admin_format_nvm().
>
> Guixin Liu (3):
>    nvme: add tracing of reservation commands
>    nvme: parse dsm command's attr deallocate when tracing
>    nvme: parse format command's lbafu when tracing
>
>   drivers/nvme/host/trace.c | 73 ++++++++++++++++++++++++++++++++++++---
>   1 file changed, 69 insertions(+), 4 deletions(-)
>

One suggestion can you please not add *** in the subject line ? that
is not a common practice on the mailing list.

This series addresses the comments posted in the last version.
Looks good, for the entire series :-

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

-ck

Re: [PATCH v2 0/3] *** nvme: add some commands tracing ***

[Guixin Liu]

在 2024/2/1 07:08, Chaitanya Kulkarni 写道:
> Guixin,
>
> On 1/31/24 01:12, Guixin Liu wrote:
>> Hi guys:
>>       I found that there are no reservation commands tracing and some
>> commands's parsing aren't fit the newest NVMe spec, and aren't readble.
>>
>> Changes from v1 to v2:
>> - Remove idr and idw parsing of dsm command.
>>
>> - Remove lbafl and lbafu variables and add a comment for the lbaf
>> calculation in nvme_trace_admin_format_nvm().
>>
>> Guixin Liu (3):
>>     nvme: add tracing of reservation commands
>>     nvme: parse dsm command's attr deallocate when tracing
>>     nvme: parse format command's lbafu when tracing
>>
>>    drivers/nvme/host/trace.c | 73 ++++++++++++++++++++++++++++++++++++---
>>    1 file changed, 69 insertions(+), 4 deletions(-)
>>
> One suggestion can you please not add *** in the subject line ? that
> is not a common practice on the mailing list.
>
> This series addresses the comments posted in the last version.
> Looks good, for the entire series :-
>
> Reviewed-by: Chaitanya Kulkarni <kch@nvidia.com>
>
> -ck

Oh, Sorry, I dont notice that, just change the "SUBJECT HERE" of

cover-letter, I will pay attention of that.

Best regards,

Guixin Liu

>

Re: [PATCH v2 0/3] *** nvme: add some commands tracing ***

[Guixin Liu]

Hi Keith,

This series of patches has not been combined yet, could you please

take a look?

Best regards,

Guixin Liu

在 2024/1/31 17:12, Guixin Liu 写道:
> Hi guys:
>      I found that there are no reservation commands tracing and some
> commands's parsing aren't fit the newest NVMe spec, and aren't readble.
>
> Changes from v1 to v2:
> - Remove idr and idw parsing of dsm command.
>
> - Remove lbafl and lbafu variables and add a comment for the lbaf
> calculation in nvme_trace_admin_format_nvm().
>
> Guixin Liu (3):
>    nvme: add tracing of reservation commands
>    nvme: parse dsm command's attr deallocate when tracing
>    nvme: parse format command's lbafu when tracing
>
>   drivers/nvme/host/trace.c | 73 ++++++++++++++++++++++++++++++++++++---
>   1 file changed, 69 insertions(+), 4 deletions(-)
>

Re: [PATCH v2 0/3] *** nvme: add some commands tracing ***

[Keith Busch]

On Wed, Mar 13, 2024 at 11:51:49AM +0800, Guixin Liu wrote:
> Hi Keith,
> 
> This series of patches has not been combined yet, could you please
> 
> take a look?

Added to nvme-6.9, thanks.

[PATCH v2 0/3] *** nvme: add some commands tracing ***

[Guixin Liu]

Hi guys:
    I found that there are no reservation commands tracing and some
commands's parsing aren't fit the newest NVMe spec, and aren't readble.

Changes from v1 to v2:
- Remove idr and idw parsing of dsm command.

- Remove lbafl and lbafu variables and add a comment for the lbaf
calculation in nvme_trace_admin_format_nvm().

Guixin Liu (3):
  nvme: add tracing of reservation commands
  nvme: parse dsm command's attr deallocate when tracing
  nvme: parse format command's lbafu when tracing

 drivers/nvme/host/trace.c | 73 ++++++++++++++++++++++++++++++++++++---
 1 file changed, 69 insertions(+), 4 deletions(-)

-- 
2.43.0