linux-kernel - Re: [PATCH 2/7] libperf: Move idx to perf

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Date:   Wed, 7 Jul 2021 20:17:27 +0200
From:   Jiri Olsa <jolsa@...hat.com>
To:     Arnaldo Carvalho de Melo <acme@...nel.org>
Cc:     lkml <linux-kernel@...r.kernel.org>,
        Peter Zijlstra <a.p.zijlstra@...llo.nl>,
        Ingo Molnar <mingo@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Namhyung Kim <namhyung@...nel.org>,
        Song Liu <songliubraving@...com>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Michael Petlan <mpetlan@...hat.com>,
        Ian Rogers <irogers@...gle.com>, nakamura.shun@...itsu.com,
        linux-perf-users@...r.kernel.org
Subject: Re: [PATCH 2/7] libperf: Move idx to perf_evsel::idx

On Wed, Jul 07, 2021 at 11:49:03AM -0300, Arnaldo Carvalho de Melo wrote:
> Em Tue, Jul 06, 2021 at 05:16:59PM +0200, Jiri Olsa escreveu:
> > Moving evsel::idx to perf_evsel::idx, so we can move
> > the group interface to libperf.
> 
> I fixed up this, that appearead on my tree after you cooked up this
> patch:

great, thanks

jirka

> 
> diff --git a/tools/perf/util/bpf_counter_cgroup.c b/tools/perf/util/bpf_counter_cgroup.c
> index 21261f1a05011d62..89aa5e71db1a9a23 100644
> --- a/tools/perf/util/bpf_counter_cgroup.c
> +++ b/tools/perf/util/bpf_counter_cgroup.c
> @@ -124,7 +124,7 @@ static int bperf_load_program(struct evlist *evlist)
>  			map_fd = bpf_map__fd(skel->maps.events);
>  			for (cpu = 0; cpu < nr_cpus; cpu++) {
>  				int fd = FD(evsel, cpu);
> -				__u32 idx = evsel->idx * total_cpus +
> +				__u32 idx = evsel->core.idx * total_cpus +
>  					evlist->core.all_cpus->map[cpu];
>  
>  				err = bpf_map_update_elem(map_fd, &idx, &fd,
> @@ -221,7 +221,7 @@ static int bperf_cgrp__sync_counters(struct evlist *evlist)
>  
>  static int bperf_cgrp__enable(struct evsel *evsel)
>  {
> -	if (evsel->idx)
> +	if (evsel->core.idx)
>  		return 0;
>  
>  	bperf_cgrp__sync_counters(evsel->evlist);
> @@ -232,7 +232,7 @@ static int bperf_cgrp__enable(struct evsel *evsel)
>  
>  static int bperf_cgrp__disable(struct evsel *evsel)
>  {
> -	if (evsel->idx)
> +	if (evsel->core.idx)
>  		return 0;
>  
>  	bperf_cgrp__sync_counters(evsel->evlist);
> @@ -251,7 +251,7 @@ static int bperf_cgrp__read(struct evsel *evsel)
>  	int reading_map_fd, err = 0;
>  	__u32 idx;
>  
> -	if (evsel->idx)
> +	if (evsel->core.idx)
>  		return 0;
>  
>  	bperf_cgrp__sync_counters(evsel->evlist);
> @@ -263,7 +263,7 @@ static int bperf_cgrp__read(struct evsel *evsel)
>  	reading_map_fd = bpf_map__fd(skel->maps.cgrp_readings);
>  
>  	evlist__for_each_entry(evlist, evsel) {
> -		idx = evsel->idx;
> +		idx = evsel->core.idx;
>  		err = bpf_map_lookup_elem(reading_map_fd, &idx, values);
>  		if (err) {
>  			pr_err("bpf map lookup falied: idx=%u, event=%s, cgrp=%s\n",
> @@ -288,7 +288,7 @@ static int bperf_cgrp__read(struct evsel *evsel)
>  
>  static int bperf_cgrp__destroy(struct evsel *evsel)
>  {
> -	if (evsel->idx)
> +	if (evsel->core.idx)
>  		return 0;
>  
>  	bperf_cgroup_bpf__destroy(skel);
>