From: Jiri Olsa <jolsa@redhat.com>
To: "nakamura.shun@fujitsu.com" <nakamura.shun@fujitsu.com>
Cc: "peterz@infradead.org" <peterz@infradead.org>,
"mingo@redhat.com" <mingo@redhat.com>,
"acme@kernel.org" <acme@kernel.org>,
"mark.rutland@arm.com" <mark.rutland@arm.com>,
"alexander.shishkin@linux.intel.com"
<alexander.shishkin@linux.intel.com>,
"namhyung@kernel.org" <namhyung@kernel.org>,
"linux-perf-users@vger.kernel.org"
<linux-perf-users@vger.kernel.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Subject: Re: libperf : Can not create event group
Date: Mon, 14 Jun 2021 13:17:08 +0200 [thread overview]
Message-ID: <YMc6tBoIQiUQkRbq@krava> (raw)
In-Reply-To: <OSBPR01MB46005B38568E90509946ECA9F7319@OSBPR01MB4600.jpnprd01.prod.outlook.com>
On Mon, Jun 14, 2021 at 07:17:53AM +0000, nakamura.shun@fujitsu.com wrote:
> Hello.
>
> perf_evsel__open cannot create an event group because it set group_fd
> to -1 when it ran perf_event_open.
> Is there any reason why group_fd is fixed at -1?
hi,
there'no leader link on this level yet (in struct evsel)
so this is not implemented at the moment
jirka
>
> Best Regards
> Shunsuke
next prev parent reply other threads:[~2021-06-14 11:19 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-06-14 7:17 libperf : Can not create event group nakamura.shun
2021-06-14 11:17 ` Jiri Olsa [this message]
2021-06-22 7:57 ` nakamura.shun
2021-06-22 21:06 ` Jiri Olsa
2021-06-28 8:44 ` nakamura.shun
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