linux-kernel - RE: [PATCH v2 2/2] scsi: ufs: Add trace event for UIC commands

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Date:   Mon, 15 Jun 2020 15:24:03 +0800
From:   Stanley Chu <stanley.chu@...iatek.com>
To:     Avri Altman <Avri.Altman@....com>
CC:     "linux-scsi@...r.kernel.org" <linux-scsi@...r.kernel.org>,
        "martin.petersen@...cle.com" <martin.petersen@...cle.com>,
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Subject: RE: [PATCH v2 2/2] scsi: ufs: Add trace event for UIC commands

Hi Avri,

On Mon, 2020-06-15 at 07:13 +0000, Avri Altman wrote:
> >         /* Write UIC Cmd */
> >         ufshcd_writel(hba, uic_cmd->command & COMMAND_OPCODE_MASK,
> >                       REG_UIC_COMMAND);
> > @@ -4825,11 +4847,15 @@ static irqreturn_t ufshcd_uic_cmd_compl(struct
> > ufs_hba *hba, u32 intr_status)
> >                         ufshcd_get_uic_cmd_result(hba);
> >                 hba->active_uic_cmd->argument3 =
> >                         ufshcd_get_dme_attr_val(hba);
> > +               ufshcd_add_uic_command_trace(hba, hba->active_uic_cmd,
> > +                                            "complete");
> >                 complete(&hba->active_uic_cmd->done);
> >                 retval = IRQ_HANDLED;
> >         }
> > 
> >         if ((intr_status & UFSHCD_UIC_PWR_MASK) && hba->uic_async_done) {
> > +               ufshcd_add_uic_command_trace(hba, hba->active_uic_cmd,
> > +                                            "complete");
> >                 complete(hba->uic_async_done);
> >                 retval = IRQ_HANDLED;
> 
> 
> Why not call ufshcd_add_uic_command_trace once if retval == IRQ_HANDLED?
> Is it that the exact timestamp?

Thanks! This makes the code cleaner.
Fixed in v3.

Stanley Chu