The patch titled
hrtimers: clean up callback tracking
has been removed from the -mm tree. Its filename was
hrtimers-clean-up-callback-tracking.patch
This patch was dropped because it was merged into mainline or a subsystem tree
------------------------------------------------------
Subject: hrtimers: clean up callback tracking
From: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Reintroduce ktimers feature "optimized away" by the ktimers review process:
remove the curr_timer pointer from the cpu-base and use the hrtimer state.
No functional changes.
Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Signed-off-by: Ingo Molnar <mingo@xxxxxxx>
Cc: Roman Zippel <zippel@xxxxxxxxxxxxxx>
Cc: john stultz <johnstul@xxxxxxxxxx>
Cc: Andi Kleen <ak@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
include/linux/hrtimer.h | 1 -
kernel/hrtimer.c | 10 +---------
2 files changed, 1 insertion(+), 10 deletions(-)
diff -puN include/linux/hrtimer.h~hrtimers-clean-up-callback-tracking include/linux/hrtimer.h
--- a/include/linux/hrtimer.h~hrtimers-clean-up-callback-tracking
+++ a/include/linux/hrtimer.h
@@ -136,7 +136,6 @@ struct hrtimer_cpu_base {
spinlock_t lock;
struct lock_class_key lock_key;
struct hrtimer_clock_base clock_base[HRTIMER_MAX_CLOCK_BASES];
- struct hrtimer *curr_timer;
};
/*
diff -puN kernel/hrtimer.c~hrtimers-clean-up-callback-tracking kernel/hrtimer.c
--- a/kernel/hrtimer.c~hrtimers-clean-up-callback-tracking
+++ a/kernel/hrtimer.c
@@ -172,8 +172,6 @@ static inline int hrtimer_callback_runni
*/
#ifdef CONFIG_SMP
-#define set_curr_timer(b, t) do { (b)->curr_timer = (t); } while (0)
-
/*
* We are using hashed locking: holding per_cpu(hrtimer_bases)[n].lock
* means that all timers which are tied to this base via timer->base are
@@ -227,7 +225,7 @@ switch_hrtimer_base(struct hrtimer *time
* completed. There is no conflict as we hold the lock until
* the timer is enqueued.
*/
- if (unlikely(base->cpu_base->curr_timer == timer))
+ if (unlikely(timer->state & HRTIMER_STATE_CALLBACK))
return base;
/* See the comment in lock_timer_base() */
@@ -241,8 +239,6 @@ switch_hrtimer_base(struct hrtimer *time
#else /* CONFIG_SMP */
-#define set_curr_timer(b, t) do { } while (0)
-
static inline struct hrtimer_clock_base *
lock_hrtimer_base(const struct hrtimer *timer, unsigned long *flags)
{
@@ -670,7 +666,6 @@ static inline void run_hrtimer_queue(str
break;
fn = timer->function;
- set_curr_timer(cpu_base, timer);
__remove_hrtimer(timer, base, HRTIMER_STATE_CALLBACK);
spin_unlock_irq(&cpu_base->lock);
@@ -684,7 +679,6 @@ static inline void run_hrtimer_queue(str
enqueue_hrtimer(timer, base);
}
}
- set_curr_timer(cpu_base, NULL);
spin_unlock_irq(&cpu_base->lock);
}
@@ -871,8 +865,6 @@ static void migrate_hrtimers(int cpu)
spin_lock(&old_base->lock);
for (i = 0; i < HRTIMER_MAX_CLOCK_BASES; i++) {
- BUG_ON(old_base->curr_timer);
-
migrate_hrtimer_list(&old_base->clock_base[i],
&new_base->clock_base[i]);
}
_
Patches currently in -mm which might be from tglx@xxxxxxxxxxxxx are
origin.patch
git-acpi.patch
git-block.patch
scheduled-removal-of-sa_xxx-interrupt-flags-fixups-3.patch
-
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