Commit e4cbb4e3 authored May 19, 2009 by Ingo Molnar

perf_counter: Move child perfcounter init to after scheduler init



Initialize a task's perfcounters (inherit from parent, etc.) after
the child task's scheduler fields have been initialized already.

[ Impact: cleanup ]

Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: John Kacur <jkacur@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
LKML-Reference: <new-submission>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

parent d94b9430

kernel/fork.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -984,7 +984,6 @@ static struct task_struct *copy_process(unsigned long clone_flags,
		goto fork_out;

		rt_mutex_init_task(p);
		perf_counter_init_task(p);

		#ifdef CONFIG_PROVE_LOCKING
		DEBUG_LOCKS_WARN_ON(!p->hardirqs_enabled);
		@@ -1096,6 +1095,7 @@ static struct task_struct *copy_process(unsigned long clone_flags,

		/* Perform scheduler related setup. Assign this task to a CPU. */
		sched_fork(p, clone_flags);
		perf_counter_init_task(p);

		if ((retval = audit_alloc(p)))
		goto bad_fork_cleanup_policy;