Re: [PATCH] perf: arm-spe: Fix check error when synthesizing events

[Arnaldo Carvalho de Melo <acme@kernel.org>]

Em Fri, Jul 24, 2020 at 04:32:18PM +0800, Leo Yan escreveu:
> Hi Wei,
> 
> On Fri, Jul 24, 2020 at 03:26:28PM +0800, Wei Li wrote:
> > In arm_spe_read_record(), when we are processing an events packet,
> > 'decoder->packet.index' is the length of payload, which has been
> > transformed in payloadlen(). So correct the check of 'idx'.
> >
> > Signed-off-by: Wei Li <liwei391@huawei.com>
> 
> Good catch.  I checked the ARMv8 ARM and the function payloadlen(),
> can confirm the fixing is correct.
> 
> Reviewed-by: Leo Yan <leo.yan@linaro.org>

Thanks, applied.

- Arnaldo

> > ---
> >  tools/perf/util/arm-spe-decoder/arm-spe-decoder.c | 6 +++---
> >  1 file changed, 3 insertions(+), 3 deletions(-)
> > 
> > diff --git a/tools/perf/util/arm-spe-decoder/arm-spe-decoder.c b/tools/perf/util/arm-spe-decoder/arm-spe-decoder.c
> > index 302a14d0aca9..93e063f22be5 100644
> > --- a/tools/perf/util/arm-spe-decoder/arm-spe-decoder.c
> > +++ b/tools/perf/util/arm-spe-decoder/arm-spe-decoder.c
> > @@ -182,15 +182,15 @@ static int arm_spe_read_record(struct arm_spe_decoder *decoder)
> >  			if (payload & BIT(EV_TLB_ACCESS))
> >  				decoder->record.type |= ARM_SPE_TLB_ACCESS;
> >  
> > -			if ((idx == 1 || idx == 2 || idx == 3) &&
> > +			if ((idx == 2 || idx == 4 || idx == 8) &&
> >  			    (payload & BIT(EV_LLC_MISS)))
> >  				decoder->record.type |= ARM_SPE_LLC_MISS;
> >  
> > -			if ((idx == 1 || idx == 2 || idx == 3) &&
> > +			if ((idx == 2 || idx == 4 || idx == 8) &&
> >  			    (payload & BIT(EV_LLC_ACCESS)))
> >  				decoder->record.type |= ARM_SPE_LLC_ACCESS;
> >  
> > -			if ((idx == 1 || idx == 2 || idx == 3) &&
> > +			if ((idx == 2 || idx == 4 || idx == 8) &&
> >  			    (payload & BIT(EV_REMOTE_ACCESS)))
> >  				decoder->record.type |= ARM_SPE_REMOTE_ACCESS;
> >  
> > -- 
> > 2.17.1
> > 

-- 

- Arnaldo