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authorTejun Heo <tj@kernel.org>2011-11-21 12:32:26 -0800
committerTejun Heo <tj@kernel.org>2011-11-21 12:32:26 -0800
commit839e3407d90a810318d17c17ceb3d5928a910704 (patch)
tree9b75e8f69cadba5d33537698931cf637a22d423b /kernel/freezer.c
parent37ad8aca94a1da2112a7c56151390914e80d1113 (diff)
downloadvexpress-lsk-839e3407d90a810318d17c17ceb3d5928a910704.tar.gz
freezer: remove unused @sig_only from freeze_task()
After "freezer: make freezing() test freeze conditions in effect instead of TIF_FREEZE", freezing() returns authoritative answer on whether the current task should freeze or not and freeze_task() doesn't need or use @sig_only. Remove it. While at it, rewrite function comment for freeze_task() and rename @sig_only to @user_only in try_to_freeze_tasks(). This patch doesn't cause any functional change. Signed-off-by: Tejun Heo <tj@kernel.org> Acked-by: Oleg Nesterov <oleg@redhat.com>
Diffstat (limited to 'kernel/freezer.c')
-rw-r--r--kernel/freezer.c21
1 files changed, 9 insertions, 12 deletions
diff --git a/kernel/freezer.c b/kernel/freezer.c
index 389549f0a94..2589a61de44 100644
--- a/kernel/freezer.c
+++ b/kernel/freezer.c
@@ -100,20 +100,17 @@ static void fake_signal_wake_up(struct task_struct *p)
}
/**
- * freeze_task - send a freeze request to given task
- * @p: task to send the request to
- * @sig_only: if set, the request will only be sent if the task has the
- * PF_FREEZER_NOSIG flag unset
- * Return value: 'false', if @sig_only is set and the task has
- * PF_FREEZER_NOSIG set or the task is frozen, 'true', otherwise
+ * freeze_task - send a freeze request to given task
+ * @p: task to send the request to
*
- * The freeze request is sent by setting the tasks's TIF_FREEZE flag and
- * either sending a fake signal to it or waking it up, depending on whether
- * or not it has PF_FREEZER_NOSIG set. If @sig_only is set and the task
- * has PF_FREEZER_NOSIG set (ie. it is a typical kernel thread), its
- * TIF_FREEZE flag will not be set.
+ * If @p is freezing, the freeze request is sent by setting %TIF_FREEZE
+ * flag and either sending a fake signal to it or waking it up, depending
+ * on whether it has %PF_FREEZER_NOSIG set.
+ *
+ * RETURNS:
+ * %false, if @p is not freezing or already frozen; %true, otherwise
*/
-bool freeze_task(struct task_struct *p, bool sig_only)
+bool freeze_task(struct task_struct *p)
{
unsigned long flags;