From: Peter Zijlstra <a.p.zijlstra@chello.nl>
To: Ingo Molnar <mingo@elte.hu>
Cc: Paul Mackerras <paulus@samba.org>,
Corey Ashford <cjashfor@linux.vnet.ibm.com>,
linux-kernel@vger.kernel.org,
Arnaldo Carvalho de Melo <acme@redhat.com>,
John Kacur <jkacur@redhat.com>
Subject: Re: [PATCH 6/7] perf_counter: change pctrl() behaviour
Date: Sat, 23 May 2009 21:04:08 +0200 [thread overview]
Message-ID: <1243105448.6582.1559.camel@laptop> (raw)
In-Reply-To: <20090523163012.916937244@chello.nl>
On Sat, 2009-05-23 at 18:29 +0200, Peter Zijlstra wrote:
> plain text document attachment (perf_counter-ctrl-all.patch)
> Instead of en/dis-abling all counters acting on a particular task, en/dis-
> able all counters we created.
>
> LKML-Reference: <new-submission>
> Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
> ---
Please fold in the below so as to avoid an explosion on first
sys_perf_counter_open().
Index: linux-2.6/kernel/perf_counter.c
===================================================================
--- linux-2.6.orig/kernel/perf_counter.c
+++ linux-2.6/kernel/perf_counter.c
@@ -3446,6 +3446,9 @@ void perf_counter_init_task(struct task_
child->perf_counter_ctxp = NULL;
+ mutex_init(&child->perf_counter_mutex);
+ INIT_LIST_HEAD(&child->perf_counter_list);
+
/*
* This is executed from the parent task context, so inherit
* counters that have been marked for cloning.
next prev parent reply other threads:[~2009-05-23 19:04 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-05-23 16:28 [PATCH 0/7] perf counter patches Peter Zijlstra
2009-05-23 16:28 ` [PATCH 1/7] perf_counter: fix dynamic irq_period logging Peter Zijlstra
2009-05-24 7:01 ` [tip:perfcounters/core] perf_counter: Fix " tip-bot for Peter Zijlstra
2009-05-25 0:08 ` [PATCH 1/7] perf_counter: fix " Paul Mackerras
2009-05-25 7:19 ` Peter Zijlstra
2009-05-23 16:28 ` [PATCH 2/7] perf_counter: sanitize counter->mutex Peter Zijlstra
2009-05-24 7:01 ` [tip:perfcounters/core] perf_counter: Sanitize counter->mutex tip-bot for Peter Zijlstra
2009-05-23 16:28 ` [PATCH 3/7] perf_counter: sanitize context locking Peter Zijlstra
2009-05-24 7:01 ` [tip:perfcounters/core] perf_counter: Sanitize " tip-bot for Peter Zijlstra
2009-05-23 16:28 ` [PATCH 4/7] perf_counter: fix userspace build Peter Zijlstra
2009-05-24 7:01 ` [tip:perfcounters/core] perf_counter: Fix " tip-bot for Peter Zijlstra
2009-05-23 16:28 ` [PATCH 5/7] perf_counter: simplify context cleanup Peter Zijlstra
2009-05-24 7:01 ` [tip:perfcounters/core] perf_counter: Simplify " tip-bot for Peter Zijlstra
2009-05-23 16:29 ` [PATCH 6/7] perf_counter: change pctrl() behaviour Peter Zijlstra
2009-05-23 19:04 ` Peter Zijlstra [this message]
2009-05-24 7:02 ` [tip:perfcounters/core] perf_counter: Change " tip-bot for Peter Zijlstra
2009-05-23 16:29 ` [PATCH 7/7] perf_counter: remove perf_counter_context::nr_enabled Peter Zijlstra
2009-05-24 7:02 ` [tip:perfcounters/core] perf_counter: Remove perf_counter_context::nr_enabled tip-bot for Peter Zijlstra
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