linux-kernel - Re: [PATCH v7 2/2]: perf record: enable asynchronous trace writing

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <7c49951f-50b2-a672-6ab8-cad72dc336a4@linux.intel.com>
Date:   Thu, 6 Sep 2018 14:58:59 +0300
From:   Alexey Budankov <alexey.budankov@...ux.intel.com>
To:     Jiri Olsa <jolsa@...hat.com>
Cc:     Ingo Molnar <mingo@...nel.org>,
        Peter Zijlstra <peterz@...radead.org>,
        Arnaldo Carvalho de Melo <acme@...nel.org>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Namhyung Kim <namhyung@...nel.org>,
        Andi Kleen <ak@...ux.intel.com>,
        linux-kernel <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v7 2/2]: perf record: enable asynchronous trace writing



On 06.09.2018 14:04, Jiri Olsa wrote:
> On Wed, Sep 05, 2018 at 10:39:25AM +0300, Alexey Budankov wrote:
> 
> SNIP
> 
>> +
>>  static int process_synthesized_event(struct perf_tool *tool,
>>  				     union perf_event *event,
>>  				     struct perf_sample *sample __maybe_unused,
>> @@ -130,12 +215,28 @@ static int process_synthesized_event(struct perf_tool *tool,
>>  	return record__write(rec, event, event->header.size);
>>  }
>>  
>> -static int record__pushfn(void *to, void *bf, size_t size)
>> +static int record__pushfn(void *to, struct aiocb *cblock, void *data, size_t size)
>>  {
>> +	off_t off;
>>  	struct record *rec = to;
>> +	int ret, trace_fd = rec->session->data->file.fd;
>>  
>>  	rec->samples++;
>> -	return record__write(rec, bf, size);
>> +
>> +	off =
>> +	lseek(trace_fd, 0, SEEK_CUR);
> 
> please keep that on the same line.. also, please run this
> patchset through the scripts/checkpatch.pl
> 
> don't worry about the 'line over 80 characters' errors,
> but the rest will be nice to have ;-)

ok! :)

> 
> jirka
>