linux-kernel - [tip:perfcounters/core] perf_counter: Make pctrl() affect inherited counters too

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Date:	Mon, 25 May 2009 13:03:55 GMT
From:	tip-bot for Peter Zijlstra <a.p.zijlstra@...llo.nl>
To:	linux-tip-commits@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org, acme@...hat.com, paulus@...ba.org,
	hpa@...or.com, mingo@...hat.com, jkacur@...hat.com,
	a.p.zijlstra@...llo.nl, tglx@...utronix.de,
	cjashfor@...ux.vnet.ibm.com, mingo@...e.hu
Subject: [tip:perfcounters/core] perf_counter: Make pctrl() affect inherited counters too

Commit-ID:  771d7cde144d87f2d1fbee4da3c6234d61f7e42a
Gitweb:     http://git.kernel.org/tip/771d7cde144d87f2d1fbee4da3c6234d61f7e42a
Author:     Peter Zijlstra <a.p.zijlstra@...llo.nl>
AuthorDate: Mon, 25 May 2009 14:45:26 +0200
Committer:  Ingo Molnar <mingo@...e.hu>
CommitDate: Mon, 25 May 2009 14:55:00 +0200

perf_counter: Make pctrl() affect inherited counters too

Paul noted that the new ptcrl() didn't work on child counters.

Reported-by: Paul Mackerras <paulus@...ba.org>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@...llo.nl>
Cc: Corey Ashford <cjashfor@...ux.vnet.ibm.com>
Cc: Arnaldo Carvalho de Melo <acme@...hat.com>
Cc: John Kacur <jkacur@...hat.com>
LKML-Reference: <20090525124600.203151469@...llo.nl>
Signed-off-by: Ingo Molnar <mingo@...e.hu>


---
 kernel/perf_counter.c |   48 ++++++++++++++++++++++++------------------------
 1 files changed, 24 insertions(+), 24 deletions(-)

diff --git a/kernel/perf_counter.c b/kernel/perf_counter.c
index 6cdf824..217dbcc 100644
--- a/kernel/perf_counter.c
+++ b/kernel/perf_counter.c
@@ -1067,30 +1067,6 @@ static void perf_counter_cpu_sched_in(struct perf_cpu_context *cpuctx, int cpu)
 	__perf_counter_sched_in(ctx, cpuctx, cpu);
 }
 
-int perf_counter_task_enable(void)
-{
-	struct perf_counter *counter;
-
-	mutex_lock(&current->perf_counter_mutex);
-	list_for_each_entry(counter, &current->perf_counter_list, owner_entry)
-		perf_counter_enable(counter);
-	mutex_unlock(&current->perf_counter_mutex);
-
-	return 0;
-}
-
-int perf_counter_task_disable(void)
-{
-	struct perf_counter *counter;
-
-	mutex_lock(&current->perf_counter_mutex);
-	list_for_each_entry(counter, &current->perf_counter_list, owner_entry)
-		perf_counter_disable(counter);
-	mutex_unlock(&current->perf_counter_mutex);
-
-	return 0;
-}
-
 static void perf_log_period(struct perf_counter *counter, u64 period);
 
 static void perf_adjust_freq(struct perf_counter_context *ctx)
@@ -1505,6 +1481,30 @@ static long perf_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
 	return 0;
 }
 
+int perf_counter_task_enable(void)
+{
+	struct perf_counter *counter;
+
+	mutex_lock(&current->perf_counter_mutex);
+	list_for_each_entry(counter, &current->perf_counter_list, owner_entry)
+		perf_counter_for_each_child(counter, perf_counter_enable);
+	mutex_unlock(&current->perf_counter_mutex);
+
+	return 0;
+}
+
+int perf_counter_task_disable(void)
+{
+	struct perf_counter *counter;
+
+	mutex_lock(&current->perf_counter_mutex);
+	list_for_each_entry(counter, &current->perf_counter_list, owner_entry)
+		perf_counter_for_each_child(counter, perf_counter_disable);
+	mutex_unlock(&current->perf_counter_mutex);
+
+	return 0;
+}
+
 /*
  * Callers need to ensure there can be no nesting of this function, otherwise
  * the seqlock logic goes bad. We can not serialize this because the arch
--
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