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authorTejun Heo <tj@kernel.org>2011-12-12 18:12:21 -0800
committerTejun Heo <tj@kernel.org>2011-12-12 18:12:21 -0800
commitbb9d97b6dffa10cec5e1ce9adbce60f3c2b5eabc (patch)
treefb8351518fcfb91927e9e138f48284c44553f011 /kernel/events
parent2f7ee5691eecb67c8108b92001a85563ea336ac5 (diff)
downloadop-kernel-dev-bb9d97b6dffa10cec5e1ce9adbce60f3c2b5eabc.zip
op-kernel-dev-bb9d97b6dffa10cec5e1ce9adbce60f3c2b5eabc.tar.gz
cgroup: don't use subsys->can_attach_task() or ->attach_task()
Now that subsys->can_attach() and attach() take @tset instead of @task, they can handle per-task operations. Convert ->can_attach_task() and ->attach_task() users to use ->can_attach() and attach() instead. Most converions are straight-forward. Noteworthy changes are, * In cgroup_freezer, remove unnecessary NULL assignments to unused methods. It's useless and very prone to get out of sync, which already happened. * In cpuset, PF_THREAD_BOUND test is checked for each task. This doesn't make any practical difference but is conceptually cleaner. Signed-off-by: Tejun Heo <tj@kernel.org> Reviewed-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Reviewed-by: Frederic Weisbecker <fweisbec@gmail.com> Acked-by: Li Zefan <lizf@cn.fujitsu.com> Cc: Paul Menage <paul@paulmenage.org> Cc: Balbir Singh <bsingharora@gmail.com> Cc: Daisuke Nishimura <nishimura@mxp.nes.nec.co.jp> Cc: James Morris <jmorris@namei.org> Cc: Ingo Molnar <mingo@elte.hu> Cc: Peter Zijlstra <peterz@infradead.org>
Diffstat (limited to 'kernel/events')
-rw-r--r--kernel/events/core.c13
1 files changed, 8 insertions, 5 deletions
diff --git a/kernel/events/core.c b/kernel/events/core.c
index 0e8457d..3b8e0ed 100644
--- a/kernel/events/core.c
+++ b/kernel/events/core.c
@@ -7044,10 +7044,13 @@ static int __perf_cgroup_move(void *info)
return 0;
}
-static void
-perf_cgroup_attach_task(struct cgroup *cgrp, struct task_struct *task)
+static void perf_cgroup_attach(struct cgroup_subsys *ss, struct cgroup *cgrp,
+ struct cgroup_taskset *tset)
{
- task_function_call(task, __perf_cgroup_move, task);
+ struct task_struct *task;
+
+ cgroup_taskset_for_each(task, cgrp, tset)
+ task_function_call(task, __perf_cgroup_move, task);
}
static void perf_cgroup_exit(struct cgroup_subsys *ss, struct cgroup *cgrp,
@@ -7061,7 +7064,7 @@ static void perf_cgroup_exit(struct cgroup_subsys *ss, struct cgroup *cgrp,
if (!(task->flags & PF_EXITING))
return;
- perf_cgroup_attach_task(cgrp, task);
+ task_function_call(task, __perf_cgroup_move, task);
}
struct cgroup_subsys perf_subsys = {
@@ -7070,6 +7073,6 @@ struct cgroup_subsys perf_subsys = {
.create = perf_cgroup_create,
.destroy = perf_cgroup_destroy,
.exit = perf_cgroup_exit,
- .attach_task = perf_cgroup_attach_task,
+ .attach = perf_cgroup_attach,
};
#endif /* CONFIG_CGROUP_PERF */
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