linux-kernel - Re: [PATCH v1 3/9] perf util: Reconstruct rblist for supporting per-thread shadow stats

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Message-ID: <20171122083025.GB30707@krava>
Date:   Wed, 22 Nov 2017 09:30:25 +0100
From:   Jiri Olsa <jolsa@...hat.com>
To:     "Jin, Yao" <yao.jin@...ux.intel.com>
Cc:     acme@...nel.org, jolsa@...nel.org, peterz@...radead.org,
        mingo@...hat.com, alexander.shishkin@...ux.intel.com,
        Linux-kernel@...r.kernel.org, ak@...ux.intel.com,
        kan.liang@...el.com, yao.jin@...el.com
Subject: Re: [PATCH v1 3/9] perf util: Reconstruct rblist for supporting
 per-thread shadow stats

On Wed, Nov 22, 2017 at 09:29:26AM +0800, Jin, Yao wrote:
> 
> 
> On 11/21/2017 11:17 PM, Jiri Olsa wrote:
> > On Mon, Nov 20, 2017 at 10:43:38PM +0800, Jin Yao wrote:
> > 
> > SNIP
> > 
> > > +static void init_saved_rblist(struct rblist *rblist)
> > > +{
> > > +	rblist__init(rblist);
> > > +	rblist->node_cmp = saved_value_cmp;
> > > +	rblist->node_new = saved_value_new;
> > > +	rblist->node_delete = saved_value_delete;
> > > +}
> > > +
> > > +static void free_saved_rblist(struct rblist *rblist)
> > > +{
> > > +	rblist__reset(rblist);
> > > +}
> > > +
> > > +void perf_stat__init_runtime_stat(struct runtime_stat *stat)
> > > +{
> > > +	memset(stat, 0, sizeof(struct runtime_stat));
> > 
> > what's this memset for? that struct has only rb_list
> > 
> > jirka
> > 
> 
> Currently this struct has only rblist. I use memset to zero this struct is
> for future potential new added fields to this struct.
> 
> If it's not good, I will remove this memset.

ok, np

jirka