From: Jiri Olsa <jolsa@redhat.com>
To: Andi Kleen <andi@firstfloor.org>
Cc: jolsa@kernel.org, acme@kernel.org, linux-kernel@vger.kernel.org,
Andi Kleen <ak@linux.intel.com>
Subject: Re: [PATCH v6 10/12] perf stat: Use affinity for reading
Date: Fri, 15 Nov 2019 15:55:35 +0100 [thread overview]
Message-ID: <20191115145535.GC4255@krava> (raw)
In-Reply-To: <20191112005941.649137-11-andi@firstfloor.org>
On Mon, Nov 11, 2019 at 04:59:39PM -0800, Andi Kleen wrote:
SNIP
>
> evlist__for_each_entry(evsel_list, counter) {
> - ret = read_counter(counter, rs);
> - if (ret)
> + if (counter->err)
> pr_debug("failed to read counter %s\n", counter->name);
> -
> - if (ret == 0 && perf_stat_process_counter(&stat_config, counter))
> + if (counter->err == 0 && perf_stat_process_counter(&stat_config, counter))
> pr_warning("failed to process counter %s\n", counter->name);
> + counter->err = 0;
> }
> }
>
> diff --git a/tools/perf/util/evsel.h b/tools/perf/util/evsel.h
> index ca82a93960cd..c8af4bc23f8f 100644
> --- a/tools/perf/util/evsel.h
> +++ b/tools/perf/util/evsel.h
> @@ -86,6 +86,7 @@ struct evsel {
> struct list_head config_terms;
> struct bpf_object *bpf_obj;
> int bpf_fd;
> + int err;
I was wondering what would be the best place for this,
and all the previous variables u added and this one
are stat specific, so I think this all belongs to
(struct perf_stat_evsel*) evsel->stat
jirka
next prev parent reply other threads:[~2019-11-15 14:55 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-11-12 0:59 Optimize perf stat for large number of events/cpus Andi Kleen
2019-11-12 0:59 ` [PATCH v6 01/12] perf pmu: Use file system cache to optimize sysfs access Andi Kleen
2019-11-12 0:59 ` [PATCH v6 02/12] perf affinity: Add infrastructure to save/restore affinity Andi Kleen
2019-11-12 0:59 ` [PATCH v6 03/12] perf cpumap: Maintain cpumaps ordered and without dups Andi Kleen
2019-11-12 0:59 ` [PATCH v6 04/12] perf evlist: Maintain evlist->all_cpus Andi Kleen
2019-11-12 0:59 ` [PATCH v6 05/12] perf evsel: Add iterator to iterate over events ordered by CPU Andi Kleen
2019-11-12 0:59 ` [PATCH v6 06/12] perf evsel: Add functions to close evsel on a CPU Andi Kleen
2019-11-12 0:59 ` [PATCH v6 07/12] perf stat: Use affinity for closing file descriptors Andi Kleen
2019-11-12 0:59 ` [PATCH v6 08/12] perf stat: Factor out open error handling Andi Kleen
2019-11-12 0:59 ` [PATCH v6 09/12] perf stat: Use affinity for opening events Andi Kleen
2019-11-12 0:59 ` [PATCH v6 10/12] perf stat: Use affinity for reading Andi Kleen
2019-11-15 14:55 ` Jiri Olsa
2019-11-15 14:55 ` Jiri Olsa [this message]
2019-11-15 18:37 ` Andi Kleen
2019-11-15 14:55 ` Jiri Olsa
2019-11-12 0:59 ` [PATCH v6 11/12] perf evsel: Add functions to enable/disable for a specific CPU Andi Kleen
2019-11-15 14:55 ` Jiri Olsa
2019-11-12 0:59 ` [PATCH v6 12/12] perf stat: Use affinity for enabling/disabling events Andi Kleen
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