RE: [PATCH 2/2] perf inject: Emit instruction records on ETM trace discontinuity

From: Robert Walker
Date: Thu Feb 15 2018 - 10:23:04 EST




> -----Original Message-----
> From: Arnaldo Carvalho de Melo [mailto:acme@xxxxxxxxxx]
> Sent: 15 February 2018 14:57
> To: Mathieu Poirier <mathieu.poirier@xxxxxxxxxx>
> Cc: Robert Walker <Robert.Walker@xxxxxxx>; linux-
> kernel@xxxxxxxxxxxxxxx; linux-arm-kernel@xxxxxxxxxxxxxxxxxxx;
> coresight@xxxxxxxxxxxxxxxx
> Subject: Re: [PATCH 2/2] perf inject: Emit instruction records on ETM
trace
> discontinuity
>
> Em Tue, Feb 13, 2018 at 03:22:33PM -0700, Mathieu Poirier escreveu:
> > On Wed, Feb 07, 2018 at 01:57:25PM +0000, Robert Walker wrote:
> > > @@ -946,20 +982,19 @@ static int cs_etm__run_decoder(struct
> cs_etm_queue *etmq)
> > > /* Run trace decoder until buffer consumed or end of trace
> */
> > > do {
> > > processed = 0;
> > > -
> >
> > this...
> >
> > > err = cs_etm_decoder__process_data_block(
> > > etmq->decoder,
> > > etmq->offset,
> > > &buffer.buf[buffer_used],
> > > buffer.len - buffer_used,
> > > &processed);
> > > -
> >
> > and this should have gone in the first patch.
> >
> > > if (err)
> > > return err;
> > >
> > > etmq->offset += processed;
> > > buffer_used += processed;
> > >
> > > + /* Process each packet in this chunk */
> >
> > And probably this too.
> >
> > With the above changes:
> >
> > Acked-by: Mathieu Poirier <mathieu.poirier@xxxxxxxxxx>
>
> Hi Robert,
>
> Can you please address Mathieu's comments, and if you agree with
> them, resubmit?
>
> Thanks!
>
> - Arnaldo

Hi Arnaldo,

I've addressed Mathieu's comments and resubmitted them yesterday
(https://lkml.org/lkml/2018/2/14/185).

Regards

Rob