linux-kernel - [PATCH 16/16] freezer: remove should_send

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Date:	Fri, 19 Aug 2011 16:16:22 +0200
From:	Tejun Heo <tj@...nel.org>
To:	rjw@...k.pl, menage@...gle.com, linux-kernel@...r.kernel.org
Cc:	arnd@...db.de, oleg@...hat.com, Tejun Heo <tj@...nel.org>
Subject: [PATCH 16/16] freezer: remove should_send_signal() and update frozen()

should_send_signal() is only used in freezer.c.  Exporting them only
increases chance of abuse.  Open code the two users and remove it.

Update frozen() to return bool.

Signed-off-by: Tejun Heo <tj@...nel.org>
---
 include/linux/freezer.h |    9 ++-------
 kernel/freezer.c        |    2 +-
 2 files changed, 3 insertions(+), 8 deletions(-)

diff --git a/include/linux/freezer.h b/include/linux/freezer.h
index 11b2bd9..122b5ce 100644
--- a/include/linux/freezer.h
+++ b/include/linux/freezer.h
@@ -15,7 +15,7 @@ extern bool pm_nosig_freezing;		/* PM nosig freezing in effect */
 /*
  * Check if a process has been frozen
  */
-static inline int frozen(struct task_struct *p)
+static inline bool frozen(struct task_struct *p)
 {
 	return p->flags & PF_FROZEN;
 }
@@ -32,11 +32,6 @@ static inline bool freezing(struct task_struct *p)
 	return freezing_slow_path(p);
 }
 
-static inline bool should_send_signal(struct task_struct *p)
-{
-	return !(p->flags & PF_FREEZER_NOSIG);
-}
-
 /* Takes and releases task alloc lock using task_lock() */
 extern void __thaw_task(struct task_struct *t);
 
@@ -156,7 +151,7 @@ static inline bool set_freezable_with_signal(void)
 	__retval;							\
 })
 #else /* !CONFIG_FREEZER */
-static inline int frozen(struct task_struct *p) { return 0; }
+static inline bool frozen(struct task_struct *p) { return false; }
 static inline bool freezing(struct task_struct *p) { return false; }
 
 static inline bool __refrigerator(bool check_kthr_stop) { return false; }
diff --git a/kernel/freezer.c b/kernel/freezer.c
index 995bddf..466ea6b 100644
--- a/kernel/freezer.c
+++ b/kernel/freezer.c
@@ -129,7 +129,7 @@ bool freeze_task(struct task_struct *p, bool sig_only)
 		return false;
 	}
 
-	if (should_send_signal(p)) {
+	if (!(p->flags & PF_FREEZER_NOSIG)) {
 		fake_signal_wake_up(p);
 		/*
 		 * fake_signal_wake_up() goes through p's scheduler
-- 
1.7.6

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