From: Peter Zijlstra <peterz@infradead.org>
To: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
Cc: Jason Baron <jbaron@redhat.com>,
athieu.desnoyers@polymtl.ca, hpa@zytor.com, rostedt@goodmis.org,
mingo@elte.hu, tglx@linutronix.de, andi@firstfloor.org,
roland@redhat.com, rth@redhat.com,
masami.hiramatsu.pt@hitachi.com, fweisbec@gmail.com,
avi@redhat.com, davem@davemloft.net, sam@ravnborg.org,
ddaney@caviumnetworks.com, michael@ellerman.id.au,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH/RFC 1/2] jump label: make enable/disable o(1)
Date: Thu, 16 Dec 2010 21:43:41 +0100 [thread overview]
Message-ID: <1292532221.2708.93.camel@laptop> (raw)
In-Reply-To: <20101216203603.GA15610@Krystal>
On Thu, 2010-12-16 at 15:36 -0500, Mathieu Desnoyers wrote:
> Tracepoints keep their own reference counts for enable/disable, so a
> simple "enable/disable" is fine as far as tracepoints are concerned. Why
> does perf need that refcounting done by the static jumps ?
Because the refcount is all we have... Why not replace that tracepoint
refcount with the jumplabel thing?
next prev parent reply other threads:[~2010-12-16 20:44 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-12-16 18:25 [PATCH/RFC 0/2] jump label: simplify API Jason Baron
2010-12-16 18:25 ` [PATCH/RFC 1/2] jump label: make enable/disable o(1) Jason Baron
2010-12-16 19:10 ` Peter Zijlstra
2010-12-16 19:23 ` Jason Baron
2010-12-16 19:33 ` Peter Zijlstra
2010-12-16 19:36 ` Jason Baron
2010-12-16 19:41 ` Peter Zijlstra
2010-12-16 19:48 ` Jason Baron
2010-12-16 20:09 ` Steven Rostedt
2010-12-16 20:36 ` Mathieu Desnoyers
2010-12-16 20:43 ` Peter Zijlstra [this message]
2010-12-16 20:50 ` Mathieu Desnoyers
2010-12-16 20:56 ` Peter Zijlstra
2010-12-17 20:07 ` Jason Baron
2010-12-17 20:51 ` David Daney
2010-12-17 21:12 ` Steven Rostedt
2010-12-17 21:32 ` Jason Baron
2010-12-16 20:45 ` Mathieu Desnoyers
2010-12-16 18:25 ` [PATCH/RFC 2/2] jump label: introduce unlikely_switch() Jason Baron
2010-12-16 19:22 ` [PATCH/RFC 0/2] jump label: simplify API Mathieu Desnoyers
2010-12-16 20:18 ` Steven Rostedt
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