linux-kernel - Re: [PATCH 7/7] perf auxtrace: Make auxtrace_queues__add

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Date:   Fri, 6 Apr 2018 14:44:23 +0300
From:   Adrian Hunter <adrian.hunter@...el.com>
To:     Arnaldo Carvalho de Melo <acme@...nel.org>
Cc:     Jiri Olsa <jolsa@...hat.com>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 7/7] perf auxtrace: Make auxtrace_queues__add_buffer() do
 CPU filtering

Hi Arnaldo

I just saw you have patch 6 but still not this one.

Regards
Adrian

On 06/03/18 11:13, Adrian Hunter wrote:
> In preparation for supporting AUX area sampling buffers,
> auxtrace_queues__add_buffer() needs to be more generic. To that end, move
> CPU filtering into it.
> 
> Signed-off-by: Adrian Hunter <adrian.hunter@...el.com>
> ---
>  tools/perf/util/auxtrace.c | 20 ++++++++++----------
>  1 file changed, 10 insertions(+), 10 deletions(-)
> 
> diff --git a/tools/perf/util/auxtrace.c b/tools/perf/util/auxtrace.c
> index e1aff91c54a8..857de69a5361 100644
> --- a/tools/perf/util/auxtrace.c
> +++ b/tools/perf/util/auxtrace.c
> @@ -302,6 +302,13 @@ static int auxtrace_queues__split_buffer(struct auxtrace_queues *queues,
>  	return 0;
>  }
>  
> +static bool filter_cpu(struct perf_session *session, int cpu)
> +{
> +	unsigned long *cpu_bitmap = session->itrace_synth_opts->cpu_bitmap;
> +
> +	return cpu_bitmap && cpu != -1 && !test_bit(cpu, cpu_bitmap);
> +}
> +
>  static int auxtrace_queues__add_buffer(struct auxtrace_queues *queues,
>  				       struct perf_session *session,
>  				       unsigned int idx,
> @@ -310,6 +317,9 @@ static int auxtrace_queues__add_buffer(struct auxtrace_queues *queues,
>  {
>  	int err = -ENOMEM;
>  
> +	if (filter_cpu(session, buffer->cpu))
> +		return 0;
> +
>  	buffer = memdup(buffer, sizeof(*buffer));
>  	if (!buffer)
>  		return -ENOMEM;
> @@ -344,13 +354,6 @@ static int auxtrace_queues__add_buffer(struct auxtrace_queues *queues,
>  	return err;
>  }
>  
> -static bool filter_cpu(struct perf_session *session, int cpu)
> -{
> -	unsigned long *cpu_bitmap = session->itrace_synth_opts->cpu_bitmap;
> -
> -	return cpu_bitmap && cpu != -1 && !test_bit(cpu, cpu_bitmap);
> -}
> -
>  int auxtrace_queues__add_event(struct auxtrace_queues *queues,
>  			       struct perf_session *session,
>  			       union perf_event *event, off_t data_offset,
> @@ -367,9 +370,6 @@ int auxtrace_queues__add_event(struct auxtrace_queues *queues,
>  	};
>  	unsigned int idx = event->auxtrace.idx;
>  
> -	if (filter_cpu(session, event->auxtrace.cpu))
> -		return 0;
> -
>  	return auxtrace_queues__add_buffer(queues, session, idx, &buffer,
>  					   buffer_ptr);
>  }
>