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From: Jiri Olsa <jolsa@redhat.com>
To: Arnaldo Carvalho de Melo <acme@kernel.org>
Cc: Jiri Olsa <jolsa@kernel.org>, lkml <linux-kernel@vger.kernel.org>,
	Peter Zijlstra <a.p.zijlstra@chello.nl>,
	Ingo Molnar <mingo@kernel.org>,
	Mark Rutland <mark.rutland@arm.com>,
	Namhyung Kim <namhyung@kernel.org>,
	Alexander Shishkin <alexander.shishkin@linux.intel.com>,
	Michael Petlan <mpetlan@redhat.com>,
	Ian Rogers <irogers@google.com>,
	Stephane Eranian <eranian@google.com>,
	Alexei Budankov <abudankov@huawei.com>
Subject: Re: [PATCH 06/24] perf daemon: Add config file support
Date: Sat, 6 Feb 2021 21:25:21 +0100	[thread overview]
Message-ID: <YB77MWKXW9lNmyR2@krava> (raw)
In-Reply-To: <YBwOAvk0v2o2w5j9@krava>

On Thu, Feb 04, 2021 at 04:08:50PM +0100, Jiri Olsa wrote:

SNIP

> > > +
> > > +static void session__free(struct session *session)
> > > +{
> > > +	free(session->base);
> > > +	free(session->name);
> > > +	free(session->run);
> > 
> > zfree() so that if there is some dangling pointer to session, we'll get
> > NULL derefs
> 
> and won't be notified by crash about the error ;-) ok

oops, actualy it makes no sense to do it here, because we're
freeing session just in the next line

> 
> > 
> > > +	free(session);
> > > +}
> > > +
> > > +static void session__remove(struct session *session)
> > > +{
> > > +	list_del(&session->list);
> > 
> > list_del_init

same here

> > 
> > > +	session__free(session);
> > > +}
> > > +
> > > +static void daemon__kill(struct daemon *daemon)
> > > +{
> > > +	daemon__signal(daemon, SIGTERM);
> > > +}
> > > +
> > >  static void daemon__free(struct daemon *daemon)
> > >  {
> > > +	struct session *session, *h;
> > > +
> > > +	list_for_each_entry_safe(session, h, &daemon->sessions, list)
> > > +		session__remove(session);
> > 
> > Wouldn't be better to have:
> > 
> > 	 list_for_each_entry_safe(session, h, &daemon->sessions, list) {
> > 	 	list_del_init(&session->list);
> > 		session__free(session);
> > 	 }
> > 
> > Because naming that function "session__remove()" one thinks it is being
> > removed from some data structure, but not that it is being as well
> > deleted.

session__remove is being called also from daemon__reconfig,
so it's there not to repeat the code, I'm ok to rename it

thanks,
jirka


  reply	other threads:[~2021-02-06 20:27 UTC|newest]

Thread overview: 62+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <20210129134855.195810-1-jolsa@redhat.com>
2021-01-30 23:48 ` [PATCHv3 00/24] perf tools: Add daemon command Jiri Olsa
2021-01-30 23:48   ` [PATCH 01/24] perf daemon: " Jiri Olsa
2021-01-30 23:48   ` [PATCH 02/24] perf daemon: Add config option Jiri Olsa
2021-02-03 20:57     ` Arnaldo Carvalho de Melo
2021-02-04 14:42       ` Jiri Olsa
2021-01-30 23:48   ` [PATCH 03/24] perf daemon: Add base option Jiri Olsa
2021-02-03 20:57     ` Arnaldo Carvalho de Melo
2021-01-30 23:48   ` [PATCH 04/24] perf daemon: Add server socket support Jiri Olsa
2021-02-03 21:04     ` Arnaldo Carvalho de Melo
2021-02-04 14:49       ` Jiri Olsa
2021-02-04 15:53         ` Arnaldo Carvalho de Melo
2021-02-05 11:30     ` Namhyung Kim
2021-02-06 19:04       ` Jiri Olsa
2021-02-07  1:36         ` Namhyung Kim
2021-01-30 23:48   ` [PATCH 05/24] perf daemon: Add client " Jiri Olsa
2021-02-03 21:05     ` Arnaldo Carvalho de Melo
2021-02-04 14:50       ` Jiri Olsa
2021-02-05 11:39     ` Namhyung Kim
2021-01-30 23:48   ` [PATCH 06/24] perf daemon: Add config file support Jiri Olsa
2021-02-03 21:12     ` Arnaldo Carvalho de Melo
2021-02-04 15:08       ` Jiri Olsa
2021-02-06 20:25         ` Jiri Olsa [this message]
2021-02-04 12:42     ` Namhyung Kim
2021-02-04 12:58       ` Arnaldo Carvalho de Melo
2021-02-04 15:10         ` Jiri Olsa
2021-02-06  8:06           ` Namhyung Kim
2021-02-05 12:14     ` Namhyung Kim
2021-02-05 12:56       ` Jiri Olsa
2021-02-06  8:05         ` Namhyung Kim
2021-02-06 22:35           ` Jiri Olsa
2021-02-07  1:38             ` Namhyung Kim
2021-01-30 23:48   ` [PATCH 07/24] perf daemon: Add config file change check Jiri Olsa
2021-02-03 21:13     ` Arnaldo Carvalho de Melo
2021-02-04 14:51       ` Jiri Olsa
2021-01-30 23:48   ` [PATCH 08/24] perf daemon: Add background support Jiri Olsa
2021-02-03 21:16     ` Arnaldo Carvalho de Melo
2021-02-04 14:52       ` Jiri Olsa
2021-01-30 23:48   ` [PATCH 09/24] perf daemon: Add signalfd support Jiri Olsa
2021-02-03 21:24     ` Arnaldo Carvalho de Melo
2021-02-04 15:06       ` Jiri Olsa
2021-01-30 23:48   ` [PATCH 10/24] perf daemon: Add list command Jiri Olsa
2021-01-30 23:48   ` [PATCH 11/24] perf daemon: Add signal command Jiri Olsa
2021-01-30 23:48   ` [PATCH 12/24] perf daemon: Add stop command Jiri Olsa
2021-01-30 23:48   ` [PATCH 13/24] perf daemon: Allow only one daemon over base directory Jiri Olsa
2021-01-30 23:48   ` [PATCH 14/24] perf daemon: Set control fifo for session Jiri Olsa
2021-01-30 23:48   ` [PATCH 15/24] perf daemon: Add ping command Jiri Olsa
2021-01-30 23:48   ` [PATCH 16/24] perf daemon: Use control to stop session Jiri Olsa
2021-01-30 23:48   ` [PATCH 17/24] perf daemon: Add up time for daemon/session list Jiri Olsa
2021-01-30 23:48   ` [PATCH 18/24] perf daemon: Add man page for perf-daemon Jiri Olsa
2021-02-03 21:17     ` Arnaldo Carvalho de Melo
2021-02-04 14:53       ` Jiri Olsa
2021-01-30 23:48   ` [PATCH 19/24] perf tests: Add daemon list command test Jiri Olsa
2021-01-30 23:48   ` [PATCH 20/24] perf tests: Add daemon reconfig test Jiri Olsa
2021-01-30 23:48   ` [PATCH 21/24] perf tests: Add daemon stop command test Jiri Olsa
2021-01-30 23:48   ` [PATCH 22/24] perf tests: Add daemon signal " Jiri Olsa
2021-01-30 23:48   ` [PATCH 23/24] perf tests: Add daemon ping " Jiri Olsa
2021-01-30 23:48   ` [PATCH 24/24] perf tests: Add daemon lock test Jiri Olsa
2021-02-08 20:08 [PATCHv4 00/24] perf tools: Add daemon command Jiri Olsa
2021-02-08 20:08 ` [PATCH 06/24] perf daemon: Add config file support Jiri Olsa
2021-02-11  6:01   ` Namhyung Kim
2021-02-11 16:45     ` Jiri Olsa
2021-02-11 17:10       ` Arnaldo Carvalho de Melo
2021-02-11 22:52         ` Jiri Olsa

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