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Subject[patch 4 09/22] timer: Remove mod_timer_pinned
We switched all users to initialize the timers as pinned and call
mod_timer(). Remove the now unused function.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Chris Mason <clm@fb.com>
Cc: Eric Dumazet <edumazet@google.com>
Cc: rt@linutronix.de
Cc: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com>
Cc: Arjan van de Ven <arjan@infradead.org>
---
include/linux/timer.h | 3 ---
kernel/time/timer.c | 39 +++++----------------------------------
2 files changed, 5 insertions(+), 37 deletions(-)

--- a/include/linux/timer.h
+++ b/include/linux/timer.h
@@ -190,12 +190,9 @@ extern void add_timer_on(struct timer_li
extern int del_timer(struct timer_list * timer);
extern int mod_timer(struct timer_list *timer, unsigned long expires);
extern int mod_timer_pending(struct timer_list *timer, unsigned long expires);
-extern int mod_timer_pinned(struct timer_list *timer, unsigned long expires);

extern void set_timer_slack(struct timer_list *time, int slack_hz);

-#define MOD_TIMER_NOT_PINNED 0
-#define MOD_TIMER_PINNED 1
/*
* The jiffies value which is added to now, when there is no timer
* in the timer wheel:
--- a/kernel/time/timer.c
+++ b/kernel/time/timer.c
@@ -764,8 +764,7 @@ static struct tvec_base *lock_timer_base
}

static inline int
-__mod_timer(struct timer_list *timer, unsigned long expires,
- bool pending_only, int pinned)
+__mod_timer(struct timer_list *timer, unsigned long expires, bool pending_only)
{
struct tvec_base *base, *new_base;
unsigned long flags;
@@ -782,7 +781,7 @@ static inline int

debug_activate(timer, expires);

- new_base = get_target_base(base, pinned || timer->flags & TIMER_PINNED);
+ new_base = get_target_base(base, timer->flags & TIMER_PINNED);

if (base != new_base) {
/*
@@ -825,7 +824,7 @@ static inline int
*/
int mod_timer_pending(struct timer_list *timer, unsigned long expires)
{
- return __mod_timer(timer, expires, true, MOD_TIMER_NOT_PINNED);
+ return __mod_timer(timer, expires, true);
}
EXPORT_SYMBOL(mod_timer_pending);

@@ -900,39 +899,11 @@ int mod_timer(struct timer_list *timer,
if (timer_pending(timer) && timer->expires == expires)
return 1;

- return __mod_timer(timer, expires, false, MOD_TIMER_NOT_PINNED);
+ return __mod_timer(timer, expires, false);
}
EXPORT_SYMBOL(mod_timer);

/**
- * mod_timer_pinned - modify a timer's timeout
- * @timer: the timer to be modified
- * @expires: new timeout in jiffies
- *
- * mod_timer_pinned() is a way to update the expire field of an
- * active timer (if the timer is inactive it will be activated)
- * and to ensure that the timer is scheduled on the current CPU.
- *
- * Note that this does not prevent the timer from being migrated
- * when the current CPU goes offline. If this is a problem for
- * you, use CPU-hotplug notifiers to handle it correctly, for
- * example, cancelling the timer when the corresponding CPU goes
- * offline.
- *
- * mod_timer_pinned(timer, expires) is equivalent to:
- *
- * del_timer(timer); timer->expires = expires; add_timer(timer);
- */
-int mod_timer_pinned(struct timer_list *timer, unsigned long expires)
-{
- if (timer->expires == expires && timer_pending(timer))
- return 1;
-
- return __mod_timer(timer, expires, false, MOD_TIMER_PINNED);
-}
-EXPORT_SYMBOL(mod_timer_pinned);
-
-/**
* add_timer - start a timer
* @timer: the timer to be added
*
@@ -1512,7 +1483,7 @@ signed long __sched schedule_timeout(sig
expire = timeout + jiffies;

setup_timer_on_stack(&timer, process_timeout, (unsigned long)current);
- __mod_timer(&timer, expire, false, MOD_TIMER_NOT_PINNED);
+ __mod_timer(&timer, expire, false);
schedule();
del_singleshot_timer_sync(&timer);


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