This patch removes some redundant debug prints, since we have added some
tracepoints to help with performance analysis of MMC subsystem.
Signed-off-by: Baolin Wang <[email protected]>
---
drivers/mmc/core/core.c | 52 -----------------------------------------------
1 file changed, 52 deletions(-)
diff --git a/drivers/mmc/core/core.c b/drivers/mmc/core/core.c
index f80b3ab..3f1362a 100644
--- a/drivers/mmc/core/core.c
+++ b/drivers/mmc/core/core.c
@@ -157,33 +157,6 @@ void mmc_request_done(struct mmc_host *host, struct mmc_request *mrq)
led_trigger_event(host->led, LED_OFF);
- if (mrq->sbc) {
- pr_debug("%s: req done <CMD%u>: %d: %08x %08x %08x %08x\n",
- mmc_hostname(host), mrq->sbc->opcode,
- mrq->sbc->error,
- mrq->sbc->resp[0], mrq->sbc->resp[1],
- mrq->sbc->resp[2], mrq->sbc->resp[3]);
- }
-
- pr_debug("%s: req done (CMD%u): %d: %08x %08x %08x %08x\n",
- mmc_hostname(host), cmd->opcode, err,
- cmd->resp[0], cmd->resp[1],
- cmd->resp[2], cmd->resp[3]);
-
- if (mrq->data) {
- pr_debug("%s: %d bytes transferred: %d\n",
- mmc_hostname(host),
- mrq->data->bytes_xfered, mrq->data->error);
- }
-
- if (mrq->stop) {
- pr_debug("%s: (CMD%u): %d: %08x %08x %08x %08x\n",
- mmc_hostname(host), mrq->stop->opcode,
- mrq->stop->error,
- mrq->stop->resp[0], mrq->stop->resp[1],
- mrq->stop->resp[2], mrq->stop->resp[3]);
- }
-
if (mrq->done)
mrq->done(mrq);
}
@@ -236,31 +209,6 @@ static int mmc_start_request(struct mmc_host *host, struct mmc_request *mrq)
if (mmc_card_removed(host->card))
return -ENOMEDIUM;
- if (mrq->sbc) {
- pr_debug("<%s: starting CMD%u arg %08x flags %08x>\n",
- mmc_hostname(host), mrq->sbc->opcode,
- mrq->sbc->arg, mrq->sbc->flags);
- }
-
- pr_debug("%s: starting CMD%u arg %08x flags %08x\n",
- mmc_hostname(host), mrq->cmd->opcode,
- mrq->cmd->arg, mrq->cmd->flags);
-
- if (mrq->data) {
- pr_debug("%s: blksz %d blocks %d flags %08x "
- "tsac %d ms nsac %d\n",
- mmc_hostname(host), mrq->data->blksz,
- mrq->data->blocks, mrq->data->flags,
- mrq->data->timeout_ns / 1000000,
- mrq->data->timeout_clks);
- }
-
- if (mrq->stop) {
- pr_debug("%s: CMD%u arg %08x flags %08x\n",
- mmc_hostname(host), mrq->stop->opcode,
- mrq->stop->arg, mrq->stop->flags);
- }
-
WARN_ON(!host->claimed);
mrq->cmd->error = 0;
--
1.7.9.5
On Wed, 6 Apr 2016 19:38:30 +0800 Baolin Wang wrote:
> This patch removes some redundant debug prints, since we have added some
> tracepoints to help with performance analysis of MMC subsystem.
I think the debug prints you removed are useful for debugging mmc err, how is
this purpose achieved by tracepoints? From another side, why should I enable
tracepoints to debug mmc err?
Thanks
>
> Signed-off-by: Baolin Wang <[email protected]>
> ---
> drivers/mmc/core/core.c | 52 -----------------------------------------------
> 1 file changed, 52 deletions(-)
>
> diff --git a/drivers/mmc/core/core.c b/drivers/mmc/core/core.c
> index f80b3ab..3f1362a 100644
> --- a/drivers/mmc/core/core.c
> +++ b/drivers/mmc/core/core.c
> @@ -157,33 +157,6 @@ void mmc_request_done(struct mmc_host *host, struct mmc_request *mrq)
>
> led_trigger_event(host->led, LED_OFF);
>
> - if (mrq->sbc) {
> - pr_debug("%s: req done <CMD%u>: %d: %08x %08x %08x %08x\n",
> - mmc_hostname(host), mrq->sbc->opcode,
> - mrq->sbc->error,
> - mrq->sbc->resp[0], mrq->sbc->resp[1],
> - mrq->sbc->resp[2], mrq->sbc->resp[3]);
> - }
> -
> - pr_debug("%s: req done (CMD%u): %d: %08x %08x %08x %08x\n",
> - mmc_hostname(host), cmd->opcode, err,
> - cmd->resp[0], cmd->resp[1],
> - cmd->resp[2], cmd->resp[3]);
> -
> - if (mrq->data) {
> - pr_debug("%s: %d bytes transferred: %d\n",
> - mmc_hostname(host),
> - mrq->data->bytes_xfered, mrq->data->error);
> - }
> -
> - if (mrq->stop) {
> - pr_debug("%s: (CMD%u): %d: %08x %08x %08x %08x\n",
> - mmc_hostname(host), mrq->stop->opcode,
> - mrq->stop->error,
> - mrq->stop->resp[0], mrq->stop->resp[1],
> - mrq->stop->resp[2], mrq->stop->resp[3]);
> - }
> -
> if (mrq->done)
> mrq->done(mrq);
> }
> @@ -236,31 +209,6 @@ static int mmc_start_request(struct mmc_host *host, struct mmc_request *mrq)
> if (mmc_card_removed(host->card))
> return -ENOMEDIUM;
>
> - if (mrq->sbc) {
> - pr_debug("<%s: starting CMD%u arg %08x flags %08x>\n",
> - mmc_hostname(host), mrq->sbc->opcode,
> - mrq->sbc->arg, mrq->sbc->flags);
> - }
> -
> - pr_debug("%s: starting CMD%u arg %08x flags %08x\n",
> - mmc_hostname(host), mrq->cmd->opcode,
> - mrq->cmd->arg, mrq->cmd->flags);
> -
> - if (mrq->data) {
> - pr_debug("%s: blksz %d blocks %d flags %08x "
> - "tsac %d ms nsac %d\n",
> - mmc_hostname(host), mrq->data->blksz,
> - mrq->data->blocks, mrq->data->flags,
> - mrq->data->timeout_ns / 1000000,
> - mrq->data->timeout_clks);
> - }
> -
> - if (mrq->stop) {
> - pr_debug("%s: CMD%u arg %08x flags %08x\n",
> - mmc_hostname(host), mrq->stop->opcode,
> - mrq->stop->arg, mrq->stop->flags);
> - }
> -
> WARN_ON(!host->claimed);
>
> mrq->cmd->error = 0;
On 04/06/2016 08:57 PM, Jisheng Zhang wrote:
>
>
> On Wed, 6 Apr 2016 19:38:30 +0800 Baolin Wang wrote:
>
>> This patch removes some redundant debug prints, since we have added some
>> tracepoints to help with performance analysis of MMC subsystem.
>
> I think the debug prints you removed are useful for debugging mmc err, how is
> this purpose achieved by tracepoints? From another side, why should I enable
> tracepoints to debug mmc err?
I agreed Jisheng's opinion. tracepoint is helpful for analyzing performance and debugging something.
But I think it's more easier to check the mmc error at booting time or some time.
Best Regards,
Jaehoon Chung
>
> Thanks
>
>>
>> Signed-off-by: Baolin Wang <[email protected]>
>> ---
>> drivers/mmc/core/core.c | 52 -----------------------------------------------
>> 1 file changed, 52 deletions(-)
>>
>> diff --git a/drivers/mmc/core/core.c b/drivers/mmc/core/core.c
>> index f80b3ab..3f1362a 100644
>> --- a/drivers/mmc/core/core.c
>> +++ b/drivers/mmc/core/core.c
>> @@ -157,33 +157,6 @@ void mmc_request_done(struct mmc_host *host, struct mmc_request *mrq)
>>
>> led_trigger_event(host->led, LED_OFF);
>>
>> - if (mrq->sbc) {
>> - pr_debug("%s: req done <CMD%u>: %d: %08x %08x %08x %08x\n",
>> - mmc_hostname(host), mrq->sbc->opcode,
>> - mrq->sbc->error,
>> - mrq->sbc->resp[0], mrq->sbc->resp[1],
>> - mrq->sbc->resp[2], mrq->sbc->resp[3]);
>> - }
>> -
>> - pr_debug("%s: req done (CMD%u): %d: %08x %08x %08x %08x\n",
>> - mmc_hostname(host), cmd->opcode, err,
>> - cmd->resp[0], cmd->resp[1],
>> - cmd->resp[2], cmd->resp[3]);
>> -
>> - if (mrq->data) {
>> - pr_debug("%s: %d bytes transferred: %d\n",
>> - mmc_hostname(host),
>> - mrq->data->bytes_xfered, mrq->data->error);
>> - }
>> -
>> - if (mrq->stop) {
>> - pr_debug("%s: (CMD%u): %d: %08x %08x %08x %08x\n",
>> - mmc_hostname(host), mrq->stop->opcode,
>> - mrq->stop->error,
>> - mrq->stop->resp[0], mrq->stop->resp[1],
>> - mrq->stop->resp[2], mrq->stop->resp[3]);
>> - }
>> -
>> if (mrq->done)
>> mrq->done(mrq);
>> }
>> @@ -236,31 +209,6 @@ static int mmc_start_request(struct mmc_host *host, struct mmc_request *mrq)
>> if (mmc_card_removed(host->card))
>> return -ENOMEDIUM;
>>
>> - if (mrq->sbc) {
>> - pr_debug("<%s: starting CMD%u arg %08x flags %08x>\n",
>> - mmc_hostname(host), mrq->sbc->opcode,
>> - mrq->sbc->arg, mrq->sbc->flags);
>> - }
>> -
>> - pr_debug("%s: starting CMD%u arg %08x flags %08x\n",
>> - mmc_hostname(host), mrq->cmd->opcode,
>> - mrq->cmd->arg, mrq->cmd->flags);
>> -
>> - if (mrq->data) {
>> - pr_debug("%s: blksz %d blocks %d flags %08x "
>> - "tsac %d ms nsac %d\n",
>> - mmc_hostname(host), mrq->data->blksz,
>> - mrq->data->blocks, mrq->data->flags,
>> - mrq->data->timeout_ns / 1000000,
>> - mrq->data->timeout_clks);
>> - }
>> -
>> - if (mrq->stop) {
>> - pr_debug("%s: CMD%u arg %08x flags %08x\n",
>> - mmc_hostname(host), mrq->stop->opcode,
>> - mrq->stop->arg, mrq->stop->flags);
>> - }
>> -
>> WARN_ON(!host->claimed);
>>
>> mrq->cmd->error = 0;
>
> --
> To unsubscribe from this list: send the line "unsubscribe linux-mmc" in
> the body of a message to [email protected]
> More majordomo info at http://vger.kernel.org/majordomo-info.html
>
>
On 6 April 2016 at 19:57, Jisheng Zhang <[email protected]> wrote:
>
>
> On Wed, 6 Apr 2016 19:38:30 +0800 Baolin Wang wrote:
>
>> This patch removes some redundant debug prints, since we have added some
>> tracepoints to help with performance analysis of MMC subsystem.
>
> I think the debug prints you removed are useful for debugging mmc err, how is
> this purpose achieved by tracepoints? From another side, why should I enable
> tracepoints to debug mmc err?
Tracepoints can show all the debugging mmc information, so I think
these debug prints are redundant. Another point you said, why you
should enable tracepoints to debug mmc? Tracepoints are lightweight
hooks and one simple way to be used for tracing and performance
accounting.
>
> Thanks
>
>>
>> Signed-off-by: Baolin Wang <[email protected]>
>> ---
>> drivers/mmc/core/core.c | 52 -----------------------------------------------
>> 1 file changed, 52 deletions(-)
>>
>> diff --git a/drivers/mmc/core/core.c b/drivers/mmc/core/core.c
>> index f80b3ab..3f1362a 100644
>> --- a/drivers/mmc/core/core.c
>> +++ b/drivers/mmc/core/core.c
>> @@ -157,33 +157,6 @@ void mmc_request_done(struct mmc_host *host, struct mmc_request *mrq)
>>
>> led_trigger_event(host->led, LED_OFF);
>>
>> - if (mrq->sbc) {
>> - pr_debug("%s: req done <CMD%u>: %d: %08x %08x %08x %08x\n",
>> - mmc_hostname(host), mrq->sbc->opcode,
>> - mrq->sbc->error,
>> - mrq->sbc->resp[0], mrq->sbc->resp[1],
>> - mrq->sbc->resp[2], mrq->sbc->resp[3]);
>> - }
>> -
>> - pr_debug("%s: req done (CMD%u): %d: %08x %08x %08x %08x\n",
>> - mmc_hostname(host), cmd->opcode, err,
>> - cmd->resp[0], cmd->resp[1],
>> - cmd->resp[2], cmd->resp[3]);
>> -
>> - if (mrq->data) {
>> - pr_debug("%s: %d bytes transferred: %d\n",
>> - mmc_hostname(host),
>> - mrq->data->bytes_xfered, mrq->data->error);
>> - }
>> -
>> - if (mrq->stop) {
>> - pr_debug("%s: (CMD%u): %d: %08x %08x %08x %08x\n",
>> - mmc_hostname(host), mrq->stop->opcode,
>> - mrq->stop->error,
>> - mrq->stop->resp[0], mrq->stop->resp[1],
>> - mrq->stop->resp[2], mrq->stop->resp[3]);
>> - }
>> -
>> if (mrq->done)
>> mrq->done(mrq);
>> }
>> @@ -236,31 +209,6 @@ static int mmc_start_request(struct mmc_host *host, struct mmc_request *mrq)
>> if (mmc_card_removed(host->card))
>> return -ENOMEDIUM;
>>
>> - if (mrq->sbc) {
>> - pr_debug("<%s: starting CMD%u arg %08x flags %08x>\n",
>> - mmc_hostname(host), mrq->sbc->opcode,
>> - mrq->sbc->arg, mrq->sbc->flags);
>> - }
>> -
>> - pr_debug("%s: starting CMD%u arg %08x flags %08x\n",
>> - mmc_hostname(host), mrq->cmd->opcode,
>> - mrq->cmd->arg, mrq->cmd->flags);
>> -
>> - if (mrq->data) {
>> - pr_debug("%s: blksz %d blocks %d flags %08x "
>> - "tsac %d ms nsac %d\n",
>> - mmc_hostname(host), mrq->data->blksz,
>> - mrq->data->blocks, mrq->data->flags,
>> - mrq->data->timeout_ns / 1000000,
>> - mrq->data->timeout_clks);
>> - }
>> -
>> - if (mrq->stop) {
>> - pr_debug("%s: CMD%u arg %08x flags %08x\n",
>> - mmc_hostname(host), mrq->stop->opcode,
>> - mrq->stop->arg, mrq->stop->flags);
>> - }
>> -
>> WARN_ON(!host->claimed);
>>
>> mrq->cmd->error = 0;
>
--
Baolin.wang
Best Regards
On 7 April 2016 at 09:40, Jaehoon Chung <[email protected]> wrote:
> On 04/06/2016 08:57 PM, Jisheng Zhang wrote:
>>
>>
>> On Wed, 6 Apr 2016 19:38:30 +0800 Baolin Wang wrote:
>>
>>> This patch removes some redundant debug prints, since we have added some
>>> tracepoints to help with performance analysis of MMC subsystem.
>>
>> I think the debug prints you removed are useful for debugging mmc err, how is
>> this purpose achieved by tracepoints? From another side, why should I enable
>> tracepoints to debug mmc err?
>
> I agreed Jisheng's opinion. tracepoint is helpful for analyzing performance and debugging something.
> But I think it's more easier to check the mmc error at booting time or some time.
OK. Sounds reasonable.
>
> Best Regards,
> Jaehoon Chung
>
>>
>> Thanks
>>
>>>
>>> Signed-off-by: Baolin Wang <[email protected]>
>>> ---
>>> drivers/mmc/core/core.c | 52 -----------------------------------------------
>>> 1 file changed, 52 deletions(-)
>>>
>>> diff --git a/drivers/mmc/core/core.c b/drivers/mmc/core/core.c
>>> index f80b3ab..3f1362a 100644
>>> --- a/drivers/mmc/core/core.c
>>> +++ b/drivers/mmc/core/core.c
>>> @@ -157,33 +157,6 @@ void mmc_request_done(struct mmc_host *host, struct mmc_request *mrq)
>>>
>>> led_trigger_event(host->led, LED_OFF);
>>>
>>> - if (mrq->sbc) {
>>> - pr_debug("%s: req done <CMD%u>: %d: %08x %08x %08x %08x\n",
>>> - mmc_hostname(host), mrq->sbc->opcode,
>>> - mrq->sbc->error,
>>> - mrq->sbc->resp[0], mrq->sbc->resp[1],
>>> - mrq->sbc->resp[2], mrq->sbc->resp[3]);
>>> - }
>>> -
>>> - pr_debug("%s: req done (CMD%u): %d: %08x %08x %08x %08x\n",
>>> - mmc_hostname(host), cmd->opcode, err,
>>> - cmd->resp[0], cmd->resp[1],
>>> - cmd->resp[2], cmd->resp[3]);
>>> -
>>> - if (mrq->data) {
>>> - pr_debug("%s: %d bytes transferred: %d\n",
>>> - mmc_hostname(host),
>>> - mrq->data->bytes_xfered, mrq->data->error);
>>> - }
>>> -
>>> - if (mrq->stop) {
>>> - pr_debug("%s: (CMD%u): %d: %08x %08x %08x %08x\n",
>>> - mmc_hostname(host), mrq->stop->opcode,
>>> - mrq->stop->error,
>>> - mrq->stop->resp[0], mrq->stop->resp[1],
>>> - mrq->stop->resp[2], mrq->stop->resp[3]);
>>> - }
>>> -
>>> if (mrq->done)
>>> mrq->done(mrq);
>>> }
>>> @@ -236,31 +209,6 @@ static int mmc_start_request(struct mmc_host *host, struct mmc_request *mrq)
>>> if (mmc_card_removed(host->card))
>>> return -ENOMEDIUM;
>>>
>>> - if (mrq->sbc) {
>>> - pr_debug("<%s: starting CMD%u arg %08x flags %08x>\n",
>>> - mmc_hostname(host), mrq->sbc->opcode,
>>> - mrq->sbc->arg, mrq->sbc->flags);
>>> - }
>>> -
>>> - pr_debug("%s: starting CMD%u arg %08x flags %08x\n",
>>> - mmc_hostname(host), mrq->cmd->opcode,
>>> - mrq->cmd->arg, mrq->cmd->flags);
>>> -
>>> - if (mrq->data) {
>>> - pr_debug("%s: blksz %d blocks %d flags %08x "
>>> - "tsac %d ms nsac %d\n",
>>> - mmc_hostname(host), mrq->data->blksz,
>>> - mrq->data->blocks, mrq->data->flags,
>>> - mrq->data->timeout_ns / 1000000,
>>> - mrq->data->timeout_clks);
>>> - }
>>> -
>>> - if (mrq->stop) {
>>> - pr_debug("%s: CMD%u arg %08x flags %08x\n",
>>> - mmc_hostname(host), mrq->stop->opcode,
>>> - mrq->stop->arg, mrq->stop->flags);
>>> - }
>>> -
>>> WARN_ON(!host->claimed);
>>>
>>> mrq->cmd->error = 0;
>>
>> --
>> To unsubscribe from this list: send the line "unsubscribe linux-mmc" in
>> the body of a message to [email protected]
>> More majordomo info at http://vger.kernel.org/majordomo-info.html
>>
>>
>
--
Baolin.wang
Best Regards