Commit-ID: 4d9a5d4319e22670ec6d6227e12b54f361c46d0f
Gitweb: http://git.kernel.org/tip/4d9a5d4319e22670ec6d6227e12b54f361c46d0f
Author: Frederic Weisbecker <fweisbec@xxxxxxxxx>
AuthorDate: Thu, 11 Oct 2012 01:47:16 +0200
Committer: Paul E. McKenney <paulmck@xxxxxxxxxxxxxxxxxx>
CommitDate: Tue, 23 Oct 2012 14:54:06 -0700
rcu: Remove rcu_switch()
It's only there to call rcu_user_hooks_switch(). Let's
just call rcu_user_hooks_switch() directly, we don't need this
function in the middle.
Signed-off-by: Frederic Weisbecker <fweisbec@xxxxxxxxx>
Cc: Josh Triplett <josh@xxxxxxxxxxxxxxxx>
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Cc: Richard Weinberger <richard@xxxxxx>
Signed-off-by: Paul E. McKenney <paulmck@xxxxxxxxxxxxxxxxxx>
---
arch/um/drivers/mconsole_kern.c | 2 +-
include/linux/rcupdate.h | 2 ++
include/linux/sched.h | 8 --------
kernel/sched/core.c | 2 +-
4 files changed, 4 insertions(+), 10 deletions(-)
diff --git a/arch/um/drivers/mconsole_kern.c b/arch/um/drivers/mconsole_kern.c
index 79ccfe6..49e3b49 100644
--- a/arch/um/drivers/mconsole_kern.c
+++ b/arch/um/drivers/mconsole_kern.c
@@ -648,7 +648,7 @@ static void stack_proc(void *arg)
struct task_struct *from = current, *to = arg;
to->thread.saved_task = from;
- rcu_switch(from, to);
+ rcu_user_hooks_switch(from, to);
switch_to(from, to, from);
}
diff --git a/include/linux/rcupdate.h b/include/linux/rcupdate.h
index 7c968e4..5d009de 100644
--- a/include/linux/rcupdate.h
+++ b/include/linux/rcupdate.h
@@ -204,6 +204,8 @@ static inline void rcu_user_enter(void) { }
static inline void rcu_user_exit(void) { }
static inline void rcu_user_enter_after_irq(void) { }
static inline void rcu_user_exit_after_irq(void) { }
+static inline void rcu_user_hooks_switch(struct task_struct *prev,
+ struct task_struct *next) { }
#endif /* CONFIG_RCU_USER_QS */
extern void exit_rcu(void);
diff --git a/include/linux/sched.h b/include/linux/sched.h
index 0dd42a0..432cc5e 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -1844,14 +1844,6 @@ static inline void rcu_copy_process(struct task_struct *p)
#endif
-static inline void rcu_switch(struct task_struct *prev,
- struct task_struct *next)
-{
-#ifdef CONFIG_RCU_USER_QS
- rcu_user_hooks_switch(prev, next);
-#endif
-}
-
static inline void tsk_restore_flags(struct task_struct *task,
unsigned long orig_flags, unsigned long flags)
{
diff --git a/kernel/sched/core.c b/kernel/sched/core.c
index 2d8927f..68414fa 100644
--- a/kernel/sched/core.c
+++ b/kernel/sched/core.c
@@ -1887,7 +1887,7 @@ context_switch(struct rq *rq, struct task_struct *prev,
#endif
/* Here we just switch the register state and the stack. */
- rcu_switch(prev, next);
+ rcu_user_hooks_switch(prev, next);
switch_to(prev, next, prev);
barrier();
--
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