linux-kernel - Re: [PATCH v3 4/5] perf mem: Fill in the missing freeing a session after an error occur

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Message-Id: <52382EDC-1073-464B-B5DE-CC21E5D22AAF@gmail.com>
Date:	Wed, 1 Jul 2015 22:18:33 +0900
From:	Taewoong Song <treeze.taeung@...il.com>
To:	Jiri Olsa <jolsa@...hat.com>
Cc:	Arnaldo Carvalho de Melo <acme@...nel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	namhyung@...nel.org, Ingo Molnar <mingo@...hat.com>
Subject: Re: [PATCH v3 4/5] perf mem: Fill in the missing freeing a session after an error occur

I’m sorry. I made a mistake.
So I sent again patch mail as [PATCH RESEND v3 4/5]

Thanks,
Taeung


> On Jul 1, 2015, at 10:09 PM, Jiri Olsa <jolsa@...hat.com> wrote:
> 
> On Wed, Jul 01, 2015 at 08:59:48PM +0900, Taeung Song wrote:
>> When an error occur a error value is just returned
>> without freeing the session. So allocating and freeing
>> session have to be matched as a pair even if an error occur.
>> 
>> Signed-off-by: Taeung Song <treeze.taeung@...il.com>
>> ---
>> commit_msg               |  5 +++++
>> tools/perf/builtin-mem.c | 16 ++++++----------
>> 2 files changed, 11 insertions(+), 10 deletions(-)
>> create mode 100644 commit_msg
>> 
>> diff --git a/commit_msg b/commit_msg
>> new file mode 100644
>> index 0000000..659c93f
>> --- /dev/null
>> +++ b/commit_msg
>> @@ -0,0 +1,5 @@
>> +perf kmem: Fill in the missing freeing a session after an error occur
>> +
>> +When an error occur a error value is just returned
>> +without freeing the session. So allocating and freeing
>> +session have to be matched as a pair even if an error occur.
> 
> extra file added ^^^, apart from that:
> 
> Acked-by: Jiri Olsa <jolsa@...nel.org>
> 
> thanks,
> jirka
> 
> 
>> diff --git a/tools/perf/builtin-mem.c b/tools/perf/builtin-mem.c
>> index da2ec06..80170aa 100644
>> --- a/tools/perf/builtin-mem.c
>> +++ b/tools/perf/builtin-mem.c
>> @@ -124,7 +124,6 @@ static int report_raw_events(struct perf_mem *mem)
>> 		.mode = PERF_DATA_MODE_READ,
>> 		.force = mem->force,
>> 	};
>> -	int err = -EINVAL;
>> 	int ret;
>> 	struct perf_session *session = perf_session__new(&file, false,
>> 							 &mem->tool);
>> @@ -135,24 +134,21 @@ static int report_raw_events(struct perf_mem *mem)
>> 	if (mem->cpu_list) {
>> 		ret = perf_session__cpu_bitmap(session, mem->cpu_list,
>> 					       mem->cpu_bitmap);
>> -		if (ret)
>> +		if (ret < 0)
>> 			goto out_delete;
>> 	}
>> 
>> -	if (symbol__init(&session->header.env) < 0)
>> -		return -1;
>> +	ret = symbol__init(&session->header.env);
>> +	if (ret < 0)
>> +		goto out_delete;
>> 
>> 	printf("# PID, TID, IP, ADDR, LOCAL WEIGHT, DSRC, SYMBOL\n");
>> 
>> -	err = perf_session__process_events(session);
>> -	if (err)
>> -		return err;
>> -
>> -	return 0;
>> +	ret = perf_session__process_events(session);
>> 
>> out_delete:
>> 	perf_session__delete(session);
>> -	return err;
>> +	return ret;
>> }
>> 
>> static int report_events(int argc, const char **argv, struct perf_mem *mem)
>> -- 
>> 1.9.1
>> 

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