linux-kernel - Re: [PATCH v2 5/5] drm/komeda: add rate limiting disable to err

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Date:   Wed, 13 Nov 2019 13:43:53 +0000
From:   Mihail Atanassov <Mihail.Atanassov@....com>
To:     Daniel Vetter <daniel@...ll.ch>
CC:     nd <nd@....com>, Liviu Dudau <Liviu.Dudau@....com>,
        nd <nd@....com>,
        "dri-devel@...ts.freedesktop.org" <dri-devel@...ts.freedesktop.org>,
        Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
        Maxime Ripard <mripard@...nel.org>,
        Sean Paul <sean@...rly.run>,
        Brian Starkey <Brian.Starkey@....com>,
        David Airlie <airlied@...ux.ie>,
        "james qian wang (Arm Technology China)" <james.qian.wang@....com>,
        "Lowry Li (Arm Technology China)" <Lowry.Li@....com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v2 5/5] drm/komeda: add rate limiting disable to
 err_verbosity

On Tuesday, 12 November 2019 18:24:16 GMT Daniel Vetter wrote:
> On Tue, Nov 12, 2019 at 2:00 PM Mihail Atanassov
> <Mihail.Atanassov@....com> wrote:
> >
> > On Monday, 11 November 2019 15:53:14 GMT Liviu Dudau wrote:
> > > On Thu, Nov 07, 2019 at 11:42:44AM +0000, Mihail Atanassov wrote:
> > > > It's possible to get multiple events in a single frame/flip, so add an
> > > > option to print them all.
> > > >
> > > > Reviewed-by: James Qian Wang (Arm Technology China) <james.qian.wang@....com>
> > > > Signed-off-by: Mihail Atanassov <mihail.atanassov@....com>
> > >
> > > For the whole series:
> > >
> > > Acked-by: Liviu Dudau <liviu.dudau@....com>
> >
> > Thanks, applied to drm-misc-next.
> 
> And now komeda doesn't even compile anymore. I'm ... impressed.
> 

Mea culpa! Sorry about the breakage, I did build-test but apparently
not the right checkout :/. I'll adjust my workflow to make sure this
doesn't happen again.

> I mean generally people break other people's driver, not their own.
> -Daniel
> 
> > >
> > > Best regards,
> > > Liviu
> > >
> > > > ---
> > > >
> > > >  v2: Clean up continuation line warning from checkpatch.
> > > >
> > > >  drivers/gpu/drm/arm/display/komeda/komeda_dev.h   | 2 ++
> > > >  drivers/gpu/drm/arm/display/komeda/komeda_event.c | 2 +-
> > > >  2 files changed, 3 insertions(+), 1 deletion(-)
> > > >
> > > > diff --git a/drivers/gpu/drm/arm/display/komeda/komeda_dev.h b/drivers/gpu/drm/arm/display/komeda/komeda_dev.h
> > > > index d9fc9c48859a..15f52e304c08 100644
> > > > --- a/drivers/gpu/drm/arm/display/komeda/komeda_dev.h
> > > > +++ b/drivers/gpu/drm/arm/display/komeda/komeda_dev.h
> > > > @@ -224,6 +224,8 @@ struct komeda_dev {
> > > >  #define KOMEDA_DEV_PRINT_INFO_EVENTS BIT(2)
> > > >     /* Dump DRM state on an error or warning event. */
> > > >  #define KOMEDA_DEV_PRINT_DUMP_STATE_ON_EVENT BIT(8)
> > > > +   /* Disable rate limiting of event prints (normally one per commit) */
> > > > +#define KOMEDA_DEV_PRINT_DISABLE_RATELIMIT BIT(12)
> > > >  };
> > > >
> > > >  static inline bool
> > > > diff --git a/drivers/gpu/drm/arm/display/komeda/komeda_event.c b/drivers/gpu/drm/arm/display/komeda/komeda_event.c
> > > > index 7fd624761a2b..bf269683f811 100644
> > > > --- a/drivers/gpu/drm/arm/display/komeda/komeda_event.c
> > > > +++ b/drivers/gpu/drm/arm/display/komeda/komeda_event.c
> > > > @@ -119,7 +119,7 @@ void komeda_print_events(struct komeda_events *evts, struct drm_device *dev)
> > > >     /* reduce the same msg print, only print the first evt for one frame */
> > > >     if (evts->global || is_new_frame(evts))
> > > >             en_print = true;
> > > > -   if (!en_print)
> > > > +   if (!(err_verbosity & KOMEDA_DEV_PRINT_DISABLE_RATELIMIT) && !en_print)
> > > >             return;
> > > >
> > > >     if (err_verbosity & KOMEDA_DEV_PRINT_ERR_EVENTS)
> > > > --
> > > > 2.23.0
> > > >
> > >
> > > --
> > > ====================
> > > | I would like to |
> > > | fix the world,  |
> > > | but they're not |
> > > | giving me the   |
> > >  \ source code!  /
> > >   ---------------
> > >     ¯\_(ツ)_/¯
> > >
> >
> >
> > --
> > Mihail
> >
> >
> >
> 
> 
> 


-- 
Mihail