From: Jiri Olsa <jolsa@redhat.com>
To: James Clark <james.clark@arm.com>
Cc: linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org, suzuki.poulose@arm.com,
gengdongjiu@huawei.com, wxf.wang@hisilicon.com,
liwei391@huawei.com, liuqi115@hisilicon.com,
huawei.libin@huawei.com, nd@arm.com,
linux-perf-users@vger.kernel.org, Will Deacon <will@kernel.org>,
Mark Rutland <mark.rutland@arm.com>,
Peter Zijlstra <peterz@infradead.org>,
Ingo Molnar <mingo@redhat.com>,
Arnaldo Carvalho de Melo <acme@kernel.org>,
Alexander Shishkin <alexander.shishkin@linux.intel.com>,
Tan Xiaojun <tanxiaojun@huawei.com>, Al Grant <al.grant@arm.com>,
Namhyung Kim <namhyung@kernel.org>
Subject: Re: [PATCH v2 5/7] perf tools: add perf_evlist__terminate() for terminate
Date: Mon, 27 Jan 2020 13:31:08 +0100 [thread overview]
Message-ID: <20200127123108.GC1114818@krava> (raw)
In-Reply-To: <20200123160734.3775-6-james.clark@arm.com>
On Thu, Jan 23, 2020 at 04:07:32PM +0000, James Clark wrote:
> From: Wei Li <liwei391@huawei.com>
>
> In __cmd_record(), when receiving SIGINT(ctrl + c), a done flag will
> be set and the event list will be disabled by perf_evlist__disable()
> once.
>
> While in auxtrace_record.read_finish(), the related events will be
> enabled again, if they are continuous, the recording seems to be endless.
>
> Mark the evlist's state as terminated, preparing for the following fix.
>
> Signed-off-by: Wei Li <liwei391@huawei.com>
> Tested-by: Qi Liu <liuqi115@hisilicon.com>
> Signed-off-by: James Clark <james.clark@arm.com>
> Cc: Will Deacon <will@kernel.org>
> Cc: Mark Rutland <mark.rutland@arm.com>
> Cc: Peter Zijlstra <peterz@infradead.org>
> Cc: Ingo Molnar <mingo@redhat.com>
> Cc: Arnaldo Carvalho de Melo <acme@kernel.org>
> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
> Cc: Jiri Olsa <jolsa@redhat.com>
> Cc: Tan Xiaojun <tanxiaojun@huawei.com>
> Cc: Al Grant <al.grant@arm.com>
> Cc: Namhyung Kim <namhyung@kernel.org>
> ---
> tools/perf/builtin-record.c | 1 +
> tools/perf/util/evlist.c | 14 ++++++++++++++
> tools/perf/util/evlist.h | 1 +
> tools/perf/util/evsel.h | 1 +
> 4 files changed, 17 insertions(+)
>
> diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c
> index 4c301466101b..e7c917f9534d 100644
> --- a/tools/perf/builtin-record.c
> +++ b/tools/perf/builtin-record.c
> @@ -1722,6 +1722,7 @@ static int __cmd_record(struct record *rec, int argc, const char **argv)
> if (done && !disabled && !target__none(&opts->target)) {
> trigger_off(&auxtrace_snapshot_trigger);
> evlist__disable(rec->evlist);
> + evlist__terminate(rec->evlist);
> disabled = true;
> }
> }
> diff --git a/tools/perf/util/evlist.c b/tools/perf/util/evlist.c
> index b9c7e5271611..b04794cd8586 100644
> --- a/tools/perf/util/evlist.c
> +++ b/tools/perf/util/evlist.c
> @@ -377,6 +377,20 @@ bool evsel__cpu_iter_skip(struct evsel *ev, int cpu)
> return true;
> }
>
> +void evlist__terminate(struct evlist *evlist)
> +{
> + struct evsel *pos;
> +
> + evlist__for_each_entry(evlist, pos) {
> + if (pos->disabled || !perf_evsel__is_group_leader(pos) || !pos->core.fd)
> + continue;
> + evsel__disable(pos);
> + pos->terminated = true;
> + }
how is this different from evlist__disable? other than it does not
follow the cpu affinity ;-) can't you just call evlist__disable and
check later on evlist->enabled instead of evlist->terminated?
jirka
next prev parent reply other threads:[~2020-01-27 12:31 UTC|newest]
Thread overview: 42+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-01-23 16:07 [PATCH v2 0/7] perf tools: Add support for some spe events and precise ip James Clark
2020-01-23 16:07 ` [PATCH v2 1/7] perf tools: Move arm-spe-pkt-decoder.h/c to the new dir James Clark
2020-01-23 16:07 ` [PATCH v2 2/7] perf tools: Add support for "report" for some spe events James Clark
2020-01-27 12:31 ` Jiri Olsa
2020-01-23 16:07 ` [PATCH v2 3/7] perf report: Add --spe options for arm-spe James Clark
2020-01-23 16:07 ` [PATCH v2 4/7] perf tools: Support "branch-misses:pp" on arm64 James Clark
2020-01-27 12:31 ` Jiri Olsa
2020-01-23 16:07 ` [PATCH v2 5/7] perf tools: add perf_evlist__terminate() for terminate James Clark
2020-01-27 12:31 ` Jiri Olsa [this message]
2020-02-07 15:21 ` [PATCH v3 0/4] perf tools: Add support for some spe events and precise ip James Clark
2020-02-07 15:21 ` [PATCH v3 1/4] perf tools: Move arm-spe-pkt-decoder.h/c to the new dir James Clark
2020-02-07 15:21 ` [PATCH v3 2/4] perf tools: Add support for "report" for some spe events James Clark
2020-02-07 15:21 ` [PATCH v3 3/4] perf report: Add SPE options to --itrace argument James Clark
2020-02-07 15:21 ` [PATCH v3 4/4] perf tools: Support "branch-misses:pp" on arm64 James Clark
2020-02-10 12:25 ` Jiri Olsa
2020-02-11 14:04 ` [PATCH v4 0/4] perf tools: Add support for some spe events and precise ip James Clark
2020-02-11 14:04 ` [PATCH v4 1/4] perf tools: Move arm-spe-pkt-decoder.h/c to the new dir James Clark
2020-02-11 14:04 ` [PATCH v4 2/4] perf tools: Add support for "report" for some spe events James Clark
2020-02-17 11:39 ` Adrian Hunter
2020-02-11 14:04 ` [PATCH v4 3/4] perf report: Add SPE options to --itrace argument James Clark
2020-02-17 11:39 ` Adrian Hunter
2020-02-25 11:57 ` [PATCH v5 0/4] perf tools: Add support for some spe events and precise ip James Clark
2020-02-25 11:57 ` [PATCH v5 1/4] perf tools: Move arm-spe-pkt-decoder.h/c to the new dir James Clark
2020-02-25 11:57 ` [PATCH v5 2/4] perf tools: Add support for "report" for some spe events James Clark
2020-02-29 6:51 ` Leo Yan
2020-02-25 11:57 ` [PATCH v5 3/4] perf report: Add SPE options to --itrace argument James Clark
2020-02-25 11:57 ` [PATCH v5 4/4] perf tools: Support "branch-misses:pp" on arm64 James Clark
2020-02-28 16:03 ` Mark Rutland
2020-02-11 14:04 ` [PATCH v4 " James Clark
2020-02-17 11:42 ` Adrian Hunter
2020-02-24 17:08 ` James Clark
2020-02-28 16:01 ` Mark Rutland
2020-03-06 15:25 ` [PATCH v6 0/3] perf tools: Add support for some spe events James Clark
2020-03-06 15:25 ` [PATCH v6 1/3] perf tools: Move arm-spe-pkt-decoder.h/c to the new dir James Clark
2020-03-06 15:25 ` [PATCH v6 2/3] perf tools: Add support for "report" for some spe events James Clark
2020-03-06 15:25 ` [PATCH v6 3/3] perf report: Add SPE options to --itrace argument James Clark
2020-03-13 11:33 ` Leo Yan
2020-03-13 11:53 ` [PATCH v6 0/3] perf tools: Add support for some spe events Mark Rutland
2020-02-12 12:24 ` [PATCH v4 0/4] perf tools: Add support for some spe events and precise ip Jiri Olsa
2020-02-12 13:10 ` Adrian Hunter
2020-01-23 16:07 ` [PATCH v2 6/7] perf tools: arm-spe: fix record hang after being terminated James Clark
2020-01-23 16:07 ` [PATCH v2 7/7] perf tools: Unset precise_ip when using SPE James Clark
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