From: Arnaldo Carvalho de Melo <arnaldo.melo@gmail.com>
To: Song Liu <songliubraving@fb.com>
Cc: Kim Phillips <kim.phillips@amd.com>,
Arnaldo Carvalho de Melo <acme@redhat.com>,
Peter Zijlstra <peterz@infradead.org>,
Ingo Molnar <mingo@redhat.com>, Andi Kleen <ak@linux.intel.com>,
Mark Rutland <mark.rutland@arm.com>,
Alexander Shishkin <alexander.shishkin@linux.intel.com>,
Jiri Olsa <jolsa@kernel.org>, Jiri Olsa <jolsa@redhat.com>,
Namhyung Kim <namhyung@kernel.org>,
Cong Wang <xiyou.wangcong@gmail.com>,
Jin Yao <yao.jin@linux.intel.com>,
Kan Liang <kan.liang@linux.intel.com>,
Davidlohr Bueso <dave@stgolabs.net>,
"linux-perf-users@vger.kernel.org"
<linux-perf-users@vger.kernel.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH 3/3 v2] perf symbols: convert symbol__is_idle to use strlist
Date: Mon, 10 Feb 2020 16:32:51 -0300 [thread overview]
Message-ID: <20200210193251.GD3416@kernel.org> (raw)
In-Reply-To: <4F6B8692-B1FE-4108-A6B3-44EEE5F92C97@fb.com>
Em Mon, Feb 10, 2020 at 06:51:53PM +0000, Song Liu escreveu:
>
>
> > On Feb 10, 2020, at 8:31 AM, Kim Phillips <kim.phillips@amd.com> wrote:
> >
> > Use the more optimized strlist implementation to do the idle function
> > lookup.
> >
> > Cc: Peter Zijlstra <peterz@infradead.org>
> > Cc: Ingo Molnar <mingo@redhat.com>
> > Cc: Andi Kleen <ak@linux.intel.com>
> > Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
> > Cc: Mark Rutland <mark.rutland@arm.com>
> > Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
> > Cc: Jiri Olsa <jolsa@kernel.org>
> > Cc: Jiri Olsa <jolsa@redhat.com>
> > Cc: Namhyung Kim <namhyung@kernel.org>
> > Cc: Cong Wang <xiyou.wangcong@gmail.com>
> > Cc: Jin Yao <yao.jin@linux.intel.com>
> > Cc: Kan Liang <kan.liang@linux.intel.com>
> > Cc: Kim Phillips <kim.phillips@amd.com>
> > Cc: Song Liu <songliubraving@fb.com>
> > Cc: Davidlohr Bueso <dave@stgolabs.net>
> > Cc: linux-perf-users@vger.kernel.org
> > Cc: linux-kernel@vger.kernel.org
> > Signed-off-by: Kim Phillips <kim.phillips@amd.com>
> > ---
> > v2: new this series, based on Jiri's comment:
> >
> > https://lore.kernel.org/lkml/20200120092844.GC608405@krava/
> >
> > ...and this time with the Cc list intact.
> >
> > tools/perf/util/symbol.c | 14 +++++++++-----
> > 1 file changed, 9 insertions(+), 5 deletions(-)
> >
> > diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c
> > index f3120c4f47ad..1077013d8ce2 100644
> > --- a/tools/perf/util/symbol.c
> > +++ b/tools/perf/util/symbol.c
> > @@ -654,13 +654,17 @@ static bool symbol__is_idle(const char *name)
> > NULL
> > };
> > int i;
> > + static struct strlist *idle_symbols_list;
>
> nit, probably just personal preference:
>
> Maybe move idle_symbols_list out of the function and add the logic
> to symbol__init()?
>
> Other than this:
>
> Acked-by: Song Liu <songliubraving@fb.com>
I applied it as is, improvements can be made on top of it.
- Arnaldo
> >
> > - for (i = 0; idle_symbols[i]; i++) {
> > - if (!strcmp(idle_symbols[i], name))
> > - return true;
> > - }
> > + if (idle_symbols_list)
> > + return strlist__has_entry(idle_symbols_list, name);
> >
> > - return false;
> > + idle_symbols_list = strlist__new(NULL, NULL);
> > +
> > + for (i = 0; idle_symbols[i]; i++)
> > + strlist__add(idle_symbols_list, idle_symbols[i]);
> > +
> > + return strlist__has_entry(idle_symbols_list, name);
> > }
> >
> > static int map__process_kallsym_symbol(void *arg, const char *name,
> > --
> > 2.25.0
> >
>
--
- Arnaldo
next prev parent reply other threads:[~2020-02-10 19:33 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-02-07 23:06 [PATCH 1/3 v2] perf stat: don't report a null stalled cycles per insn metric Kim Phillips
2020-02-07 23:06 ` [PATCH 2/3 v2] perf symbols: Update the list of kernel idle symbols Kim Phillips
2020-02-10 18:52 ` Song Liu
2020-02-15 8:41 ` [tip: perf/urgent] " tip-bot2 for Kim Phillips
2020-02-10 16:31 ` [PATCH 3/3 v2] perf symbols: convert symbol__is_idle to use strlist Kim Phillips
2020-02-10 18:51 ` Song Liu
2020-02-10 19:32 ` Arnaldo Carvalho de Melo [this message]
2020-02-15 8:41 ` [tip: perf/urgent] perf symbols: Convert symbol__is_idle() " tip-bot2 for Kim Phillips
2020-02-10 18:53 ` [PATCH 1/3 v2] perf stat: don't report a null stalled cycles per insn metric Song Liu
2020-02-15 8:41 ` [tip: perf/urgent] perf stat: Don't " tip-bot2 for Kim Phillips
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