linux-kernel - Re: [PATCH 3/3] perf, tools, report: Set up samples correctly in hierarchy mode

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Date:   Wed, 13 Mar 2019 10:13:22 +0100
From:   Jiri Olsa <jolsa@...hat.com>
To:     Andi Kleen <andi@...stfloor.org>
Cc:     acme@...nel.org, jolsa@...nel.org,
        linux-perf-users@...r.kernel.org, linux-kernel@...r.kernel.org,
        Andi Kleen <ak@...ux.intel.com>
Subject: Re: [PATCH 3/3] perf, tools, report: Set up samples correctly in
 hierarchy mode

On Tue, Mar 12, 2019 at 06:52:30AM -0700, Andi Kleen wrote:
> On Tue, Mar 12, 2019 at 12:12:59PM +0100, Jiri Olsa wrote:
> > On Mon, Mar 11, 2019 at 08:52:24PM -0700, Andi Kleen wrote:
> > > From: Andi Kleen <ak@...ux.intel.com>
> > > 
> > > In hierarchy mode the res samples need to be cloned from the parent
> > > entry. Copy them in this case. This fixes res sample browsing
> > > with --hierarchy.
> > > 
> > > Signed-off-by: Andi Kleen <ak@...ux.intel.com>
> > > ---
> > >  tools/perf/util/hist.c | 11 +++++++++--
> > >  1 file changed, 9 insertions(+), 2 deletions(-)
> > > 
> > > diff --git a/tools/perf/util/hist.c b/tools/perf/util/hist.c
> > > index 1f230285d78a..dcf24581dfbd 100644
> > > --- a/tools/perf/util/hist.c
> > > +++ b/tools/perf/util/hist.c
> > > @@ -437,8 +437,15 @@ static int hist_entry__init(struct hist_entry *he,
> > >  	}
> > >  
> > >  	if (symbol_conf.res_sample) {
> > > -		he->res_samples = calloc(sizeof(struct res_sample),
> > > -					symbol_conf.res_sample);
> > > +		if (he->res_samples) {
> > 
> > I dont think this leg will ever execute because we don't set
> > res_samples in template
> 
> I originally thought this too, but ...
> 
> The hierarchy mode calls it with a hist entry that is not
> a template.

right, forgot about this

Acked-by: Jiri Olsa <jolsa@...nel.org>

thanks,
jirka