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Re: [PATCH/RFC v3] perf core: Allow setting up max frame stack depth via sysctl

From David Ahern <dsahern@gmail.com>
Newsgroups linux.kernel
Subject Re: [PATCH/RFC v3] perf core: Allow setting up max frame stack depth via sysctl
Date 2016-04-26 18:50 +0200
Message-ID <rselr-2qW-5@gated-at.bofh.it> (permalink)
References (6 earlier) <rrZ34-6Ew-11@gated-at.bofh.it> <rrZmp-6LW-5@gated-at.bofh.it> <rrZmp-6LW-3@gated-at.bofh.it> <rrZw6-6PQ-13@gated-at.bofh.it> <rsebM-2ma-13@gated-at.bofh.it>
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On 4/26/16 10:33 AM, Arnaldo Carvalho de Melo wrote:
> So, for completeness, further testing it to see how far it goes on a 8GB
> machine I got:
>
> [root@emilia ~]# echo 131100 > /proc/sys/kernel/perf_event_max_stack
> [root@emilia ~]# perf record -g ls
> Error:
> The sys_perf_event_open() syscall returned with 12 (Cannot allocate memory) for event (cycles).
> /bin/dmesg may provide additional information.
> No CONFIG_PERF_EVENTS=y kernel support configured?

I thought we fixed up the last line to not display for errors like this.

How about adding ENOMEM case to perf_evsel__open_strerror?

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[PATCH/RFC] perf core: Allow setting up max frame stack depth via  sysctl Arnaldo Carvalho de Melo <acme@kernel.org> - 2016-04-21 00:50 +0200
  Re: [PATCH/RFC] perf core: Allow setting up max frame stack depth  via sysctl Alexei Starovoitov <alexei.starovoitov@gmail.com> - 2016-04-21 01:10 +0200
    [PATCH/RFC v2] perf core: Allow setting up max frame stack depth via  sysctl Arnaldo Carvalho de Melo <acme@kernel.org> - 2016-04-22 23:00 +0200
      Re: [PATCH/RFC v2] perf core: Allow setting up max frame stack depth  via sysctl Alexei Starovoitov <alexei.starovoitov@gmail.com> - 2016-04-22 23:40 +0200
      Re: [PATCH/RFC v2] perf core: Allow setting up max frame stack depth  via sysctl David Ahern <dsahern@gmail.com> - 2016-04-23 00:10 +0200
        Re: [PATCH/RFC v2] perf core: Allow setting up max frame stack depth  via sysctl Alexei Starovoitov <alexei.starovoitov@gmail.com> - 2016-04-23 00:20 +0200
          Re: [PATCH/RFC v2] perf core: Allow setting up max frame stack depth  via sysctl Arnaldo Carvalho de Melo <acme@kernel.org> - 2016-04-25 18:20 +0200
            Re: [PATCH/RFC v2] perf core: Allow setting up max frame stack depth  via sysctl Arnaldo Carvalho de Melo <acme@kernel.org> - 2016-04-25 18:30 +0200
              Re: [PATCH/RFC v2] perf core: Allow setting up max frame stack depth  via sysctl Arnaldo Carvalho de Melo <acme@kernel.org> - 2016-04-25 21:30 +0200
                Re: [PATCH/RFC v2] perf core: Allow setting up max frame stack depth  via sysctl Alexei Starovoitov <alexei.starovoitov@gmail.com> - 2016-04-25 22:10 +0200
                Re: [PATCH/RFC v2] perf core: Allow setting up max frame stack depth  via sysctl Arnaldo Carvalho de Melo <acme@kernel.org> - 2016-04-25 22:20 +0200
                Re: [PATCH/RFC v2] perf core: Allow setting up max frame stack depth  via sysctl Alexei Starovoitov <alexei.starovoitov@gmail.com> - 2016-04-26 00:10 +0200
                Re: [PATCH/RFC v2] perf core: Allow setting up max frame stack depth  via sysctl Arnaldo Carvalho de Melo <acme@kernel.org> - 2016-04-26 01:50 +0200
                Re: [PATCH/RFC v2] perf core: Allow setting up max frame stack depth  via sysctl Alexei Starovoitov <alexei.starovoitov@gmail.com> - 2016-04-26 02:10 +0200
                [PATCH/RFC v3] perf core: Allow setting up max frame stack depth via  sysctl Arnaldo Carvalho de Melo <acme@kernel.org> - 2016-04-26 02:30 +0200
                Re: [PATCH/RFC v3] perf core: Allow setting up max frame stack depth  via sysctl Arnaldo Carvalho de Melo <acme@kernel.org> - 2016-04-26 02:50 +0200
                Re: [PATCH/RFC v3] perf core: Allow setting up max frame stack depth  via sysctl Brendan Gregg <brendan.d.gregg@gmail.com> - 2016-04-26 03:00 +0200
                Re: [PATCH/RFC v3] perf core: Allow setting up max frame stack depth  via sysctl Arnaldo Carvalho de Melo <acme@kernel.org> - 2016-04-26 18:40 +0200
                Re: [PATCH/RFC v3] perf core: Allow setting up max frame stack depth  via sysctl David Ahern <dsahern@gmail.com> - 2016-04-26 18:50 +0200
                Re: [PATCH/RFC v3] perf core: Allow setting up max frame stack depth  via sysctl Arnaldo Carvalho de Melo <acme@kernel.org> - 2016-04-27 15:30 +0200
                Re: [PATCH/RFC v3] perf core: Allow setting up max frame stack depth  via sysctl Brendan Gregg <brendan.d.gregg@gmail.com> - 2016-04-26 22:10 +0200
                Re: [PATCH/RFC v3] perf core: Allow setting up max frame stack depth  via sysctl Arnaldo Carvalho de Melo <acme@kernel.org> - 2016-04-26 23:10 +0200
                Re: [PATCH/RFC v3] perf core: Allow setting up max frame stack depth  via sysctl Peter Zijlstra <peterz@infradead.org> - 2016-04-27 00:00 +0200
                Re: [PATCH/RFC v3] perf core: Allow setting up max frame stack depth  via sysctl Arnaldo Carvalho de Melo <acme@kernel.org> - 2016-04-27 15:00 +0200
                Re: [PATCH/RFC v3] perf core: Allow setting up max frame stack depth  via sysctl Brendan Gregg <brendan.d.gregg@gmail.com> - 2016-04-27 00:00 +0200
                Re: [PATCH/RFC v3] perf core: Allow setting up max frame stack depth  via sysctl Peter Zijlstra <peterz@infradead.org> - 2016-04-27 00:20 +0200
                Re: [PATCH/RFC v3] perf core: Allow setting up max frame stack depth  via sysctl Arnaldo Carvalho de Melo <acme@kernel.org> - 2016-04-27 15:00 +0200
                Re: [PATCH/RFC v3] perf core: Allow setting up max frame stack depth  via sysctl Alexei Starovoitov <alexei.starovoitov@gmail.com> - 2016-04-26 02:50 +0200
                Re: [PATCH/RFC v3] perf core: Allow setting up max frame stack depth  via sysctl Frederic Weisbecker <fweisbec@gmail.com> - 2016-04-27 00:00 +0200
                Re: [PATCH/RFC v3] perf core: Allow setting up max frame stack depth  via sysctl Arnaldo Carvalho de Melo <acme@kernel.org> - 2016-04-27 15:00 +0200
                Re: [PATCH/RFC v3] perf core: Allow setting up max frame stack depth  via sysctl Frederic Weisbecker <fweisbec@gmail.com> - 2016-04-27 18:10 +0200
                Re: [PATCH/RFC v3] perf core: Allow setting up max frame stack depth  via sysctl David Ahern <dsahern@gmail.com> - 2016-04-27 18:30 +0200
                [tip:perf/core] perf core: Allow setting up max frame stack depth  via sysctl tip-bot for Arnaldo Carvalho de Melo <tipbot@zytor.com> - 2016-04-27 17:50 +0200
  Re: [PATCH/RFC] perf core: Allow setting up max frame stack depth via  sysctl David Ahern <dsahern@gmail.com> - 2016-04-21 01:20 +0200
    Re: [PATCH/RFC] perf core: Allow setting up max frame stack depth  via sysctl Arnaldo Carvalho de Melo <acme@kernel.org> - 2016-04-21 02:20 +0200
  Re: [PATCH/RFC] perf core: Allow setting up max frame stack depth  via sysctl Peter Zijlstra <peterz@infradead.org> - 2016-04-21 13:00 +0200
    Re: [PATCH/RFC] perf core: Allow setting up max frame stack depth  via sysctl Arnaldo Carvalho de Melo <acme@kernel.org> - 2016-04-21 17:20 +0200
      Re: [PATCH/RFC] perf core: Allow setting up max frame stack depth  via sysctl Arnaldo Carvalho de Melo <acme@kernel.org> - 2016-04-21 17:50 +0200

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