There are multiple users of tick_get_device() which are currently using &per_cpu(tick_cpu_device, cpu) directly. Would be better to move definition of tick_get_device() to tick.h and move others to use this routine instead.
This change reduced size of bzImage for x86 by 96 bytes.
Signed-off-by: Viresh Kumar viresh.kumar@linaro.org --- include/linux/tick.h | 5 ++++- kernel/time/clockevents.c | 6 +++--- kernel/time/tick-broadcast.c | 12 ++++++------ kernel/time/tick-common.c | 9 ++------- 4 files changed, 15 insertions(+), 17 deletions(-)
diff --git a/include/linux/tick.h b/include/linux/tick.h index 1a9908a..45e1331 100644 --- a/include/linux/tick.h +++ b/include/linux/tick.h @@ -87,7 +87,10 @@ extern void __init tick_init(void); extern int tick_is_oneshot_available(void);
DECLARE_PER_CPU(struct tick_device, tick_cpu_device); -extern struct tick_device *tick_get_device(int cpu); +static inline struct tick_device *tick_get_device(int cpu) +{ + return &per_cpu(tick_cpu_device, cpu); +}
# ifdef CONFIG_HIGH_RES_TIMERS extern int tick_init_highres(void); diff --git a/kernel/time/clockevents.c b/kernel/time/clockevents.c index ad362c2..6680a0d 100644 --- a/kernel/time/clockevents.c +++ b/kernel/time/clockevents.c @@ -326,7 +326,7 @@ static int __clockevents_try_unbind(struct clock_event_device *ced, int cpu) return 0; }
- return ced == per_cpu(tick_cpu_device, cpu).evtdev ? -EAGAIN : -EBUSY; + return ced == tick_get_device(cpu)->evtdev ? -EAGAIN : -EBUSY; }
/* @@ -675,7 +675,7 @@ static struct device tick_bc_dev = { static struct tick_device *tick_get_tick_dev(struct device *dev) { return dev == &tick_bc_dev ? tick_get_broadcast_device() : - &per_cpu(tick_cpu_device, dev->id); + tick_get_device(dev->id); }
static __init int tick_broadcast_init_sysfs(void) @@ -689,7 +689,7 @@ static __init int tick_broadcast_init_sysfs(void) #else static struct tick_device *tick_get_tick_dev(struct device *dev) { - return &per_cpu(tick_cpu_device, dev->id); + return tick_get_device(dev->id); } static inline int tick_broadcast_init_sysfs(void) { return 0; } #endif diff --git a/kernel/time/tick-broadcast.c b/kernel/time/tick-broadcast.c index c4c50ba..eb0479a 100644 --- a/kernel/time/tick-broadcast.c +++ b/kernel/time/tick-broadcast.c @@ -262,7 +262,7 @@ static void tick_do_broadcast(struct cpumask *mask) */ if (cpumask_test_cpu(cpu, mask)) { cpumask_clear_cpu(cpu, mask); - td = &per_cpu(tick_cpu_device, cpu); + td = tick_get_device(cpu); td->evtdev->event_handler(td->evtdev); }
@@ -273,7 +273,7 @@ static void tick_do_broadcast(struct cpumask *mask) * one of the first device. This works as long as we have this * misfeature only on x86 (lapic) */ - td = &per_cpu(tick_cpu_device, cpumask_first(mask)); + td = tick_get_device(cpumask_first(mask)); td->evtdev->broadcast(mask); } } @@ -337,7 +337,7 @@ static void tick_do_broadcast_on_off(unsigned long *reason) raw_spin_lock_irqsave(&tick_broadcast_lock, flags);
cpu = smp_processor_id(); - td = &per_cpu(tick_cpu_device, cpu); + td = tick_get_device(cpu); dev = td->evtdev; bc = tick_broadcast_device.evtdev;
@@ -581,7 +581,7 @@ again: now = ktime_get(); /* Find all expired events */ for_each_cpu(cpu, tick_broadcast_oneshot_mask) { - td = &per_cpu(tick_cpu_device, cpu); + td = tick_get_device(cpu); if (td->evtdev->next_event.tv64 <= now.tv64) { cpumask_set_cpu(cpu, tmpmask); /* @@ -700,7 +700,7 @@ int tick_broadcast_oneshot_control(unsigned long reason) * idle code, so we can't be moved away. */ cpu = smp_processor_id(); - td = &per_cpu(tick_cpu_device, cpu); + td = tick_get_device(cpu); dev = td->evtdev;
if (!(dev->features & CLOCK_EVT_FEAT_C3STOP)) @@ -824,7 +824,7 @@ static void tick_broadcast_init_next_event(struct cpumask *mask, int cpu;
for_each_cpu(cpu, mask) { - td = &per_cpu(tick_cpu_device, cpu); + td = tick_get_device(cpu); if (td->evtdev) td->evtdev->next_event = expires; } diff --git a/kernel/time/tick-common.c b/kernel/time/tick-common.c index 0156612..c7859b7 100644 --- a/kernel/time/tick-common.c +++ b/kernel/time/tick-common.c @@ -53,11 +53,6 @@ int tick_do_timer_cpu __read_mostly = TICK_DO_TIMER_BOOT; /* * Debugging: see timer_list.c */ -struct tick_device *tick_get_device(int cpu) -{ - return &per_cpu(tick_cpu_device, cpu); -} - /** * tick_is_oneshot_available - check for a oneshot capable event device */ @@ -296,7 +291,7 @@ void tick_check_new_device(struct clock_event_device *newdev) if (!cpumask_test_cpu(cpu, newdev->cpumask)) goto out_bc;
- td = &per_cpu(tick_cpu_device, cpu); + td = tick_get_device(cpu); curdev = td->evtdev;
/* cpu local device ? */ @@ -356,7 +351,7 @@ void tick_handover_do_timer(int *cpup) */ void tick_shutdown(unsigned int *cpup) { - struct tick_device *td = &per_cpu(tick_cpu_device, *cpup); + struct tick_device *td = tick_get_device(*cpup); struct clock_event_device *dev = td->evtdev;
td->mode = TICKDEV_MODE_PERIODIC;