Re: [PATCH v6 01/11] perf tools script: Filter COMM/FORK/.. events by CPU

[Arnaldo Carvalho de Melo <arnaldo.melo@gmail.com>]

Em Mon, Mar 11, 2019 at 07:44:52AM -0700, Andi Kleen escreveu:
> From: Andi Kleen <ak@linux.intel.com>
> 
> The --cpu option only filtered samples. Filter other perf events,
> such as COMM, FORK, SWITCH by the CPU too.
> 
> Reported-by: Jiri Olsa <jolsa@kernel.org>
> Signed-off-by: Andi Kleen <ak@linux.intel.com>

Thanks, applied.
 
> ---
> v2: Only filter printf output
> v3: Move checking to function
> ---
>  tools/perf/builtin-script.c | 71 ++++++++++++++++++++++++-------------
>  1 file changed, 47 insertions(+), 24 deletions(-)
> 
> diff --git a/tools/perf/builtin-script.c b/tools/perf/builtin-script.c
> index 111787e83784..b695b20ffc8a 100644
> --- a/tools/perf/builtin-script.c
> +++ b/tools/perf/builtin-script.c
> @@ -1933,6 +1933,13 @@ static int cleanup_scripting(void)
>  	return scripting_ops ? scripting_ops->stop_script() : 0;
>  }
>  
> +static bool filter_cpu(struct perf_sample *sample)
> +{
> +	if (cpu_list)
> +		return !test_bit(sample->cpu, cpu_bitmap);
> +	return false;
> +}
> +
>  static int process_sample_event(struct perf_tool *tool,
>  				union perf_event *event,
>  				struct perf_sample *sample,
> @@ -1967,7 +1974,7 @@ static int process_sample_event(struct perf_tool *tool,
>  	if (al.filtered)
>  		goto out_put;
>  
> -	if (cpu_list && !test_bit(sample->cpu, cpu_bitmap))
> +	if (filter_cpu(sample))
>  		goto out_put;
>  
>  	if (scripting_ops)
> @@ -2052,9 +2059,11 @@ static int process_comm_event(struct perf_tool *tool,
>  		sample->tid = event->comm.tid;
>  		sample->pid = event->comm.pid;
>  	}
> -	perf_sample__fprintf_start(sample, thread, evsel,
> +	if (!filter_cpu(sample)) {
> +		perf_sample__fprintf_start(sample, thread, evsel,
>  				   PERF_RECORD_COMM, stdout);
> -	perf_event__fprintf(event, stdout);
> +		perf_event__fprintf(event, stdout);
> +	}
>  	ret = 0;
>  out:
>  	thread__put(thread);
> @@ -2088,9 +2097,11 @@ static int process_namespaces_event(struct perf_tool *tool,
>  		sample->tid = event->namespaces.tid;
>  		sample->pid = event->namespaces.pid;
>  	}
> -	perf_sample__fprintf_start(sample, thread, evsel,
> -				   PERF_RECORD_NAMESPACES, stdout);
> -	perf_event__fprintf(event, stdout);
> +	if (!filter_cpu(sample)) {
> +		perf_sample__fprintf_start(sample, thread, evsel,
> +					   PERF_RECORD_NAMESPACES, stdout);
> +		perf_event__fprintf(event, stdout);
> +	}
>  	ret = 0;
>  out:
>  	thread__put(thread);
> @@ -2122,9 +2133,11 @@ static int process_fork_event(struct perf_tool *tool,
>  		sample->tid = event->fork.tid;
>  		sample->pid = event->fork.pid;
>  	}
> -	perf_sample__fprintf_start(sample, thread, evsel,
> -				   PERF_RECORD_FORK, stdout);
> -	perf_event__fprintf(event, stdout);
> +	if (!filter_cpu(sample)) {
> +		perf_sample__fprintf_start(sample, thread, evsel,
> +					   PERF_RECORD_FORK, stdout);
> +		perf_event__fprintf(event, stdout);
> +	}
>  	thread__put(thread);
>  
>  	return 0;
> @@ -2152,9 +2165,11 @@ static int process_exit_event(struct perf_tool *tool,
>  		sample->tid = event->fork.tid;
>  		sample->pid = event->fork.pid;
>  	}
> -	perf_sample__fprintf_start(sample, thread, evsel,
> -				   PERF_RECORD_EXIT, stdout);
> -	perf_event__fprintf(event, stdout);
> +	if (!filter_cpu(sample)) {
> +		perf_sample__fprintf_start(sample, thread, evsel,
> +					   PERF_RECORD_EXIT, stdout);
> +		perf_event__fprintf(event, stdout);
> +	}
>  
>  	if (perf_event__process_exit(tool, event, sample, machine) < 0)
>  		err = -1;
> @@ -2188,9 +2203,11 @@ static int process_mmap_event(struct perf_tool *tool,
>  		sample->tid = event->mmap.tid;
>  		sample->pid = event->mmap.pid;
>  	}
> -	perf_sample__fprintf_start(sample, thread, evsel,
> -				   PERF_RECORD_MMAP, stdout);
> -	perf_event__fprintf(event, stdout);
> +	if (!filter_cpu(sample)) {
> +		perf_sample__fprintf_start(sample, thread, evsel,
> +					   PERF_RECORD_MMAP, stdout);
> +		perf_event__fprintf(event, stdout);
> +	}
>  	thread__put(thread);
>  	return 0;
>  }
> @@ -2220,9 +2237,11 @@ static int process_mmap2_event(struct perf_tool *tool,
>  		sample->tid = event->mmap2.tid;
>  		sample->pid = event->mmap2.pid;
>  	}
> -	perf_sample__fprintf_start(sample, thread, evsel,
> -				   PERF_RECORD_MMAP2, stdout);
> -	perf_event__fprintf(event, stdout);
> +	if (!filter_cpu(sample)) {
> +		perf_sample__fprintf_start(sample, thread, evsel,
> +					   PERF_RECORD_MMAP2, stdout);
> +		perf_event__fprintf(event, stdout);
> +	}
>  	thread__put(thread);
>  	return 0;
>  }
> @@ -2247,9 +2266,11 @@ static int process_switch_event(struct perf_tool *tool,
>  		return -1;
>  	}
>  
> -	perf_sample__fprintf_start(sample, thread, evsel,
> -				   PERF_RECORD_SWITCH, stdout);
> -	perf_event__fprintf(event, stdout);
> +	if (!filter_cpu(sample)) {
> +		perf_sample__fprintf_start(sample, thread, evsel,
> +					   PERF_RECORD_SWITCH, stdout);
> +		perf_event__fprintf(event, stdout);
> +	}
>  	thread__put(thread);
>  	return 0;
>  }
> @@ -2270,9 +2291,11 @@ process_lost_event(struct perf_tool *tool,
>  	if (thread == NULL)
>  		return -1;
>  
> -	perf_sample__fprintf_start(sample, thread, evsel,
> -				   PERF_RECORD_LOST, stdout);
> -	perf_event__fprintf(event, stdout);
> +	if (!filter_cpu(sample)) {
> +		perf_sample__fprintf_start(sample, thread, evsel,
> +					   PERF_RECORD_LOST, stdout);
> +		perf_event__fprintf(event, stdout);
> +	}
>  	thread__put(thread);
>  	return 0;
>  }
> -- 
> 2.20.1

-- 

- Arnaldo