linux-kernel - Re: [PATCH V2 1/5] perf tools: support new sample type for physical address

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Date:   Fri, 1 Sep 2017 12:36:20 -0300
From:   Arnaldo Carvalho de Melo <acme@...nel.org>
To:     Jiri Olsa <jolsa@...hat.com>
Cc:     kan.liang@...el.com, mingo@...hat.com,
        linux-kernel@...r.kernel.org, peterz@...radead.org,
        eranian@...gle.com, tglx@...utronix.de, ak@...ux.intel.com
Subject: Re: [PATCH V2 1/5] perf tools: support new sample type for physical
 address

Em Fri, Sep 01, 2017 at 05:28:27PM +0200, Jiri Olsa escreveu:
> On Tue, Aug 29, 2017 at 01:11:08PM -0400, kan.liang@...el.com wrote:
> 
> SNIP
> 
> > diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c
> > index a5888c7..228a78d 100644
> > --- a/tools/perf/util/evsel.c
> > +++ b/tools/perf/util/evsel.c
> > @@ -950,6 +950,9 @@ void perf_evsel__config(struct perf_evsel *evsel, struct record_opts *opts,
> >  	if (opts->sample_address)
> >  		perf_evsel__set_sample_bit(evsel, DATA_SRC);
> >  
> > +	if (opts->sample_phys_addr)
> > +		perf_evsel__set_sample_bit(evsel, PHYS_ADDR);
> > +
> >  	if (opts->no_buffering) {
> >  		attr->watermark = 0;
> >  		attr->wakeup_events = 1;
> > @@ -2201,6 +2204,12 @@ int perf_evsel__parse_sample(struct perf_evsel *evsel, union perf_event *event,
> >  		}
> >  	}
> >  
> > +	data->phys_addr = 0;
> > +	if (type & PERF_SAMPLE_PHYS_ADDR) {
> > +		data->phys_addr = *array;
> > +		array++;
> > +	}
> > +
> >  	return 0;
> >  }
> >  
> > @@ -2306,6 +2315,9 @@ size_t perf_event__sample_event_size(const struct perf_sample *sample, u64 type,
> >  		}
> >  	}
> >  
> > +	if (type & PERF_SAMPLE_PHYS_ADDR)
> > +		result += sizeof(u64);
> > +
> >  	return result;
> >  }
> >  
> > @@ -2495,6 +2507,11 @@ int perf_event__synthesize_sample(union perf_event *event, u64 type,
> >  		}
> >  	}
> >  
> > +	if (type & PERF_SAMPLE_PHYS_ADDR) {
> > +		*array = sample->phys_addr;
> > +		array++;
> > +	}
> > +
> >  	return 0;
> >  }
> >  
> 
> missing the printing bits

I'm folding this one there then,

- Arnaldo
 
> jirka
> 
> 
> diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c
> index e705c0d59a69..4bb89373eb52 100644
> --- a/tools/perf/util/evsel.c
> +++ b/tools/perf/util/evsel.c
> @@ -1467,7 +1467,7 @@ static void __p_sample_type(char *buf, size_t size, u64 value)
>  		bit_name(PERIOD), bit_name(STREAM_ID), bit_name(RAW),
>  		bit_name(BRANCH_STACK), bit_name(REGS_USER), bit_name(STACK_USER),
>  		bit_name(IDENTIFIER), bit_name(REGS_INTR), bit_name(DATA_SRC),
> -		bit_name(WEIGHT),
> +		bit_name(WEIGHT), bit_name(PHYS_ADDR),
>  		{ .name = NULL, }
>  	};
>  #undef bit_name