linux-kernel - Re: [PATCH v2 09/15] perf record: introduce thread specific objects for trace streaming

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Message-ID: <04657d10-dd5c-1dc6-77b8-665265ea66b9@gmail.com>
Date:   Mon, 26 Oct 2020 11:53:21 +0300
From:   Alexei Budankov <budankov.lore@...il.com>
To:     Jiri Olsa <jolsa@...hat.com>,
        Alexey Budankov <alexey.budankov@...ux.intel.com>
Cc:     Arnaldo Carvalho de Melo <acme@...nel.org>,
        Namhyung Kim <namhyung@...nel.org>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Adrian Hunter <adrian.hunter@...el.com>,
        Andi Kleen <ak@...ux.intel.com>,
        Peter Zijlstra <peterz@...radead.org>,
        Ingo Molnar <mingo@...hat.com>,
        linux-kernel <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v2 09/15] perf record: introduce thread specific objects
 for trace streaming



On 24.10.2020 18:44, Jiri Olsa wrote:
> On Wed, Oct 21, 2020 at 07:03:48PM +0300, Alexey Budankov wrote:
>>
>> Introduce thread local data object and its array to be used for
>> threaded trace streaming.
>>
>> Signed-off-by: Alexey Budankov <alexey.budankov@...ux.intel.com>
>> ---
>>  tools/perf/builtin-record.c | 18 ++++++++++++++++++
>>  1 file changed, 18 insertions(+)
>>
>> diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c
>> index ba26d75c51d6..8e512096a060 100644
>> --- a/tools/perf/builtin-record.c
>> +++ b/tools/perf/builtin-record.c
>> @@ -85,11 +85,29 @@ struct switch_output {
>>  	int		 cur_file;
>>  };
>>  
>> +struct thread_data {
>> +	pid_t		   tid;
>> +	struct {
>> +		int	   msg[2];
>> +		int	   ack[2];
>> +	} comm;
>> +	struct fdarray	   pollfd;
>> +	int		   ctlfd_pos;
>> +	struct mmap	   *maps;
>> +	int		   nr_mmaps;
>> +	struct record	   *rec;
>> +	unsigned long long samples;
>> +	unsigned long	   waking;
>> +	u64		   bytes_written;
>> +};
> 
> please merge the struct with the code that's using it

Corrected in v3.

Thanks,
Alexei

> 
> jirka
> 
>> +
>>  struct record {
>>  	struct perf_tool	tool;
>>  	struct record_opts	opts;
>>  	u64			bytes_written;
>>  	struct perf_data	data;
>> +	struct thread_data	*thread_data;
>> +	int			nr_thread_data;
>>  	struct auxtrace_record	*itr;
>>  	struct evlist	*evlist;
>>  	struct perf_session	*session;
>> -- 
>> 2.24.1
>>
>