linux-kernel - Re: [PATCH 14/19] EDAC, mc: Create new function edac_inc

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Date:   Mon, 14 Oct 2019 11:58:03 +0000
From:   Robert Richter <rrichter@...vell.com>
To:     Mauro Carvalho Chehab <mchehab@...nel.org>
CC:     Borislav Petkov <bp@...en8.de>, Tony Luck <tony.luck@...el.com>,
        "James Morse" <james.morse@....com>,
        "linux-edac@...r.kernel.org" <linux-edac@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 14/19] EDAC, mc: Create new function edac_inc_csrow()

On 11.10.19 08:08:25, Mauro Carvalho Chehab wrote:
> Em Thu, 10 Oct 2019 20:25:33 +0000
> Robert Richter <rrichter@...vell.com> escreveu:
> 
> > Have a separate function to count errors in csrow/channel. This better
> > separates code and reduces the indentation level. No functional
> > changes.
> 
> This one assumes patch 06/19, with I'm not sure if it is correct.

See also my answer there, the driver should still work as you expect
it even with patch #6 applied. This patch is important to isolate the
csrow handling that makes the code much better understandable and
readable. I hope there are no concerns to this patch.

Thank you for review.

-Robert

> 
> > 
> > Signed-off-by: Robert Richter <rrichter@...vell.com>
> > ---
> >  drivers/edac/edac_mc.c | 40 +++++++++++++++++++++++++---------------
> >  1 file changed, 25 insertions(+), 15 deletions(-)
> > 
> > diff --git a/drivers/edac/edac_mc.c b/drivers/edac/edac_mc.c
> > index 9e8c5716a8c0..3779204c0e21 100644
> > --- a/drivers/edac/edac_mc.c
> > +++ b/drivers/edac/edac_mc.c
> > @@ -1045,6 +1045,26 @@ static struct mem_ctl_info *error_desc_to_mci(struct edac_raw_error_desc *e)
> >  	return container_of(e, struct mem_ctl_info, error_desc);
> >  }
> >  
> > +static void edac_inc_csrow(struct edac_raw_error_desc *e, int row, int chan)
> > +{
> > +	struct mem_ctl_info *mci = error_desc_to_mci(e);
> > +	u16 count = e->error_count;
> > +	enum hw_event_mc_err_type type = e->type;
> > +
> > +	if (row < 0)
> > +		return;
> > +
> > +	edac_dbg(4, "csrow/channel to increment: (%d,%d)\n", row, chan);
> > +
> > +	if (type == HW_EVENT_ERR_CORRECTED) {
> > +		mci->csrows[row]->ce_count += count;
> > +		if (chan >= 0)
> > +			mci->csrows[row]->channels[chan]->ce_count += count;
> > +	} else {
> > +		mci->csrows[row]->ue_count += count;
> > +	}
> > +}
> > +
> >  void edac_raw_mc_handle_error(struct edac_raw_error_desc *e,
> >  			      struct dimm_info *dimm)
> >  {
> > @@ -1201,22 +1221,12 @@ void edac_mc_handle_error(const enum hw_event_mc_err_type type,
> >  			chan = -2;
> >  	}
> >  
> > -	if (any_memory) {
> > +	if (any_memory)
> >  		strcpy(e->label, "any memory");
> > -	} else {
> > -		edac_dbg(4, "csrow/channel to increment: (%d,%d)\n", row, chan);
> > -		if (p == e->label)
> > -			strcpy(e->label, "unknown memory");
> > -		if (type == HW_EVENT_ERR_CORRECTED) {
> > -			if (row >= 0) {
> > -				mci->csrows[row]->ce_count += error_count;
> > -				if (chan >= 0)
> > -					mci->csrows[row]->channels[chan]->ce_count += error_count;
> > -			}
> > -		} else
> > -			if (row >= 0)
> > -				mci->csrows[row]->ue_count += error_count;
> > -	}
> > +	else if (!*e->label)
> > +		strcpy(e->label, "unknown memory");
> > +
> > +	edac_inc_csrow(e, row, chan);
> >  
> >  	/* Fill the RAM location data */
> >  	p = e->location;
> 
> 
> 
> Thanks,
> Mauro