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 <baolin.w...@linaro.org>
>> ---
>> 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 majord...@vger.kernel.org
> More majordomo info at http://vger.kernel.org/majordomo-info.html
>
>
