From: Robert Richter <rric@kernel.org>
To: Borislav Petkov <bp@alien8.de>
Cc: Jiri Olsa <jolsa@redhat.com>, Ingo Molnar <mingo@kernel.org>,
Peter Zijlstra <peterz@infradead.org>,
Arnaldo Carvalho de Melo <acme@ghostprotocols.net>,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH 16/16] perf, persistent: Allow multiple users for an event
Date: Fri, 7 Jun 2013 15:47:16 +0200 [thread overview]
Message-ID: <20130607134716.GG3886@rric.localhost> (raw)
In-Reply-To: <20130604093522.GD23640@pd.tnic>
On 04.06.13 11:35:22, Borislav Petkov wrote:
> On Tue, Jun 04, 2013 at 11:19:21AM +0200, Jiri Olsa wrote:
> > 'cpu' did not pass ay check here..
>
> Oh, I see.
>
> You mean something like
>
> if (cpu < NR_CPUS && cpu_online(cpu))
In perf_event_alloc() there is:
if ((unsigned)cpu >= nr_cpu_ids) {
if (!task || cpu != -1)
return ERR_PTR(-EINVAL);
}
So this should be sufficient:
if ((unsigned)cpu >= nr_cpu_ids)
...
-Robert
next prev parent reply other threads:[~2013-06-07 13:47 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-05-31 8:47 [PATCH 00/16] perf, persistent: Kernel updates for perf tool integration Robert Richter
2013-05-31 8:47 ` [PATCH 01/16] perf, persistent: Fix build error for no-tracepoints configs Robert Richter
2013-05-31 9:05 ` Borislav Petkov
2013-05-31 8:47 ` [PATCH 02/16] perf, persistent: Fix attr size Robert Richter
2013-05-31 9:05 ` Borislav Petkov
2013-05-31 8:47 ` [PATCH 03/16] perf, persistent: Setting default buffer size to 512k as in perf tools Robert Richter
2013-05-31 9:07 ` Borislav Petkov
2013-05-31 8:47 ` [PATCH 04/16] perf, persistent: Print error code on failure when adding events Robert Richter
2013-05-31 9:10 ` Borislav Petkov
2013-05-31 8:47 ` [PATCH 05/16] perf, persistent: Return resonable error code Robert Richter
2013-05-31 9:11 ` Borislav Petkov
2013-05-31 8:47 ` [PATCH 06/16] perf, persistent: Return -EACCES if mapped buffers must be readonly Robert Richter
2013-05-31 9:12 ` Borislav Petkov
2013-05-31 8:47 ` [PATCH 07/16] perf, persistent: Rework struct pers_event_desc Robert Richter
2013-05-31 8:47 ` [PATCH 08/16] perf, persistent: Remove rb_put() Robert Richter
2013-05-31 8:47 ` [PATCH 09/16] perf, persistent: Introduce get_persistent_event() Robert Richter
2013-05-31 8:47 ` [PATCH 10/16] perf, persistent: Reworking perf_get_persistent_event_fd() Robert Richter
2013-05-31 8:47 ` [PATCH 11/16] perf, persistent: Protect event lists with mutex Robert Richter
2013-05-31 8:47 ` [PATCH 12/16] perf, persistent: Avoid adding identical events Robert Richter
2013-05-31 8:47 ` [PATCH 13/16] perf, persistent: Implementing a persistent pmu Robert Richter
2013-05-31 8:47 ` [PATCH 14/16] perf, persistent: Name each persistent event Robert Richter
2013-05-31 8:47 ` [PATCH 15/16] perf, persistent: Exposing persistent events using sysfs Robert Richter
2013-05-31 8:47 ` [PATCH 16/16] perf, persistent: Allow multiple users for an event Robert Richter
2013-06-03 13:49 ` Jiri Olsa
2013-06-04 8:20 ` Borislav Petkov
2013-06-04 9:19 ` Jiri Olsa
2013-06-04 9:35 ` Borislav Petkov
2013-06-07 13:47 ` Robert Richter [this message]
2013-05-31 9:15 ` [PATCH 00/16] perf, persistent: Kernel updates for perf tool integration Borislav Petkov
2013-05-31 9:32 ` Robert Richter
2013-05-31 12:21 ` Borislav Petkov
2013-06-01 16:15 ` Robert Richter
2013-06-02 7:29 ` Borislav Petkov
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