From: Robert Richter <rric@kernel.org>
To: Namhyung Kim <namhyung@kernel.org>
Cc: Borislav Petkov <bp@alien8.de>, Ingo Molnar <mingo@kernel.org>,
Peter Zijlstra <peterz@infradead.org>,
Arnaldo Carvalho de Melo <acme@infradead.org>,
Jiri Olsa <jolsa@redhat.com>,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH v2 13/14] perf, persistent: Exposing persistent events using sysfs
Date: Fri, 14 Jun 2013 10:57:12 +0200 [thread overview]
Message-ID: <20130614085712.GU12218@rric.localhost> (raw)
In-Reply-To: <87a9mt2zcf.fsf@sejong.aot.lge.com>
On 14.06.13 11:36:00, Namhyung Kim wrote:
> > +static int pers_event_sysfs_register(struct pers_event *event)
> > +{
> > + struct device_attribute *attr = &event->sysfs.attr;
> > + int idx;
> > +
> > + *attr = (struct device_attribute)__ATTR(, 0444, pers_event_sysfs_show,
> > + NULL);
> > + attr->attr.name = event->name;
>
> When I added another persistent event with this API, I got an WARNING
> from lockdep like this:
>
> [ 0.432506] BUG: key ffff88040946f140 not in .data!
> [ 0.432581] ------------[ cut here ]------------
> [ 0.432656] WARNING: at /home/namhyung/project/linux/kernel/lockdep.c:2987 lockdep_init_map+0x53d/0x570()
> [ 0.432763] DEBUG_LOCKS_WARN_ON(1)
>
>
> I guess we need the following line here:
>
> sysfs_attr_init(&attr->attr);
Yes, added your change. Thanks Namhyung for reviewing and testing.
-Robert
next prev parent reply other threads:[~2013-06-14 8:57 UTC|newest]
Thread overview: 54+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-06-11 16:42 [PATCH v2 00/14] perf, persistent: Kernel updates for perf tool integration Robert Richter
2013-06-11 16:42 ` [PATCH v2 01/14] perf, ring_buffer: Use same prefix Robert Richter
2013-06-11 16:42 ` [PATCH v2 02/14] perf: Add persistent events Robert Richter
2013-06-24 9:28 ` Peter Zijlstra
2013-06-24 19:24 ` Borislav Petkov
2013-06-25 8:46 ` Robert Richter
2013-06-11 16:42 ` [PATCH v2 03/14] perf: Add persistent event facilities Robert Richter
2013-06-14 2:15 ` Namhyung Kim
2013-06-14 7:20 ` Robert Richter
2013-06-24 9:32 ` Peter Zijlstra
2013-06-25 8:47 ` Robert Richter
2013-06-24 9:44 ` Peter Zijlstra
2013-06-25 8:41 ` Robert Richter
2013-06-24 9:48 ` Peter Zijlstra
2013-06-24 19:26 ` Borislav Petkov
2013-06-25 7:44 ` Peter Zijlstra
2013-06-25 9:24 ` Robert Richter
2013-06-25 9:37 ` Borislav Petkov
2013-06-25 10:51 ` Robert Richter
2013-06-25 15:29 ` Borislav Petkov
2013-06-25 16:14 ` Robert Richter
2013-06-11 16:42 ` [PATCH v2 04/14] MCE: Enable persistent event Robert Richter
2013-06-11 16:42 ` [PATCH v2 05/14] perf, persistent: Rework struct pers_event_desc Robert Richter
2013-06-11 16:42 ` [PATCH v2 06/14] perf, persistent: Remove rb_put() Robert Richter
2013-06-11 16:42 ` [PATCH v2 07/14] perf, persistent: Introduce get_persistent_event() Robert Richter
2013-06-11 16:42 ` [PATCH v2 08/14] perf, persistent: Reworking perf_get_persistent_event_fd() Robert Richter
2013-06-11 16:42 ` [PATCH v2 09/14] perf, persistent: Protect event lists with mutex Robert Richter
2013-06-11 16:42 ` [PATCH v2 10/14] perf, persistent: Avoid adding identical events Robert Richter
2013-06-11 16:42 ` [PATCH v2 11/14] perf, persistent: Implementing a persistent pmu Robert Richter
2013-06-11 16:42 ` [PATCH v2 12/14] perf, persistent: Name each persistent event Robert Richter
2013-06-11 16:42 ` [PATCH v2 13/14] perf, persistent: Exposing persistent events using sysfs Robert Richter
2013-06-14 2:36 ` Namhyung Kim
2013-06-14 8:57 ` Robert Richter [this message]
2013-06-11 16:42 ` [PATCH v2 14/14] perf, persistent: Allow multiple users for an event Robert Richter
2013-06-24 10:08 ` [PATCH v2 00/14] perf, persistent: Kernel updates for perf tool integration Peter Zijlstra
2013-06-25 10:46 ` Robert Richter
2013-06-24 10:22 ` Peter Zijlstra
2013-06-25 16:56 ` Robert Richter
2013-06-24 10:24 ` Peter Zijlstra
2013-06-24 15:25 ` Peter Zijlstra
2013-06-24 19:45 ` Ingo Molnar
2013-06-25 17:57 ` Robert Richter
2013-06-25 19:16 ` Borislav Petkov
2013-06-26 8:12 ` Robert Richter
2013-06-26 8:24 ` Borislav Petkov
2013-06-26 9:46 ` Ingo Molnar
2013-06-26 9:56 ` Borislav Petkov
2013-06-26 10:11 ` Robert Richter
2013-06-26 11:45 ` Ingo Molnar
2013-06-26 12:25 ` Ingo Molnar
2013-06-26 12:44 ` Robert Richter
2013-06-27 5:46 ` Namhyung Kim
2013-06-27 8:35 ` Borislav Petkov
2013-06-27 8:50 ` Ingo Molnar
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