From: Frederic Weisbecker <fweisbec@gmail.com>
To: Peter Zijlstra <peterz@infradead.org>
Cc: Ingo Molnar <mingo@elte.hu>, LKML <linux-kernel@vger.kernel.org>,
Arnaldo Carvalho de Melo <acme@redhat.com>,
Paul Mackerras <paulus@samba.org>
Subject: Re: [PATCH] perf: Store active software events in a hashlist
Date: Wed, 7 Apr 2010 14:06:56 +0200 [thread overview]
Message-ID: <20100407120653.GF5143@nowhere> (raw)
In-Reply-To: <1270641500.20295.807.camel@laptop>
On Wed, Apr 07, 2010 at 01:58:20PM +0200, Peter Zijlstra wrote:
> On Wed, 2010-04-07 at 13:56 +0200, Frederic Weisbecker wrote:
> >
> > >
> > > So looks good, altough I think we want to do that online/hotplug thing.
> >
> >
> > That would let us allocate on online cpus instead of possibles? Yeah right.
>
> Right, so if you want to go this route (and not simply embed it in the
> percpu data), the complication I thought of is that you want the
> refcount on offline cpus but not the allocation, since its very hard to
> reconstruct the number of events that had event->cpu == -1.
Ok, right I can do that.
next prev parent reply other threads:[~2010-04-07 12:07 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-04-05 14:08 [PATCH] perf: Store active software events in a hashlist Frederic Weisbecker
2010-04-06 15:27 ` Peter Zijlstra
2010-04-07 9:04 ` Peter Zijlstra
2010-04-07 11:58 ` Frederic Weisbecker
2010-04-07 12:09 ` Peter Zijlstra
2010-04-08 19:39 ` [PATCH v2] " Frederic Weisbecker
2010-04-08 20:04 ` Eric Dumazet
2010-04-08 20:11 ` Frederic Weisbecker
2010-04-07 11:56 ` [PATCH] " Frederic Weisbecker
2010-04-07 11:58 ` Peter Zijlstra
2010-04-07 12:06 ` Frederic Weisbecker [this message]
2010-04-07 9:02 ` Peter Zijlstra
2010-04-07 11:52 ` Frederic Weisbecker
2010-04-07 11:56 ` Peter Zijlstra
2010-04-07 12:09 ` Frederic Weisbecker
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