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authorLinus Torvalds <torvalds@linux-foundation.org>2014-04-01 11:00:07 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2014-04-01 11:00:07 -0700
commit1ead65812486cda65093683a99b8907a7242fa93 (patch)
tree094684870815537aae4aedb69c10d669ba29f0af /include
parentb6d739e9581272f0bbbd6edd15340fb8e108df96 (diff)
parentb97f0291a2504291aef850077f98cab68a5a2f33 (diff)
downloadlinux-1ead65812486cda65093683a99b8907a7242fa93.tar.bz2
Merge branch 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull timer changes from Thomas Gleixner: "This assorted collection provides: - A new timer based timer broadcast feature for systems which do not provide a global accessible timer device. That allows those systems to put CPUs into deep idle states where the per cpu timer device stops. - A few NOHZ_FULL related improvements to the timer wheel - The usual updates to timer devices found in ARM SoCs - Small improvements and updates all over the place" * 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (44 commits) tick: Remove code duplication in tick_handle_periodic() tick: Fix spelling mistake in tick_handle_periodic() x86: hpet: Use proper destructor for delayed work workqueue: Provide destroy_delayed_work_on_stack() clocksource: CMT, MTU2, TMU and STI should depend on GENERIC_CLOCKEVENTS timer: Remove code redundancy while calling get_nohz_timer_target() hrtimer: Rearrange comments in the order struct members are declared timer: Use variable head instead of &work_list in __run_timers() clocksource: exynos_mct: silence a static checker warning arm: zynq: Add support for cpufreq arm: zynq: Don't use arm_global_timer with cpufreq clocksource/cadence_ttc: Overhaul clocksource frequency adjustment clocksource/cadence_ttc: Call clockevents_update_freq() with IRQs enabled clocksource: Add Kconfig entries for CMT, MTU2, TMU and STI sh: Remove Kconfig entries for TMU, CMT and MTU2 ARM: shmobile: Remove CMT, TMU and STI Kconfig entries clocksource: armada-370-xp: Use atomic access for shared registers clocksource: orion: Use atomic access for shared registers clocksource: timer-keystone: Delete unnecessary variable clocksource: timer-keystone: introduce clocksource driver for Keystone ...
Diffstat (limited to 'include')
-rw-r--r--include/linux/clockchips.h16
-rw-r--r--include/linux/hrtimer.h4
-rw-r--r--include/linux/sched.h6
-rw-r--r--include/linux/workqueue.h2
4 files changed, 22 insertions, 6 deletions
diff --git a/include/linux/clockchips.h b/include/linux/clockchips.h
index 493aa021c7a9..2e4cb67f6e56 100644
--- a/include/linux/clockchips.h
+++ b/include/linux/clockchips.h
@@ -62,6 +62,11 @@ enum clock_event_mode {
#define CLOCK_EVT_FEAT_DYNIRQ 0x000020
#define CLOCK_EVT_FEAT_PERCPU 0x000040
+/*
+ * Clockevent device is based on a hrtimer for broadcast
+ */
+#define CLOCK_EVT_FEAT_HRTIMER 0x000080
+
/**
* struct clock_event_device - clock event device descriptor
* @event_handler: Assigned by the framework to be called by the low
@@ -83,6 +88,7 @@ enum clock_event_mode {
* @name: ptr to clock event name
* @rating: variable to rate clock event devices
* @irq: IRQ number (only for non CPU local devices)
+ * @bound_on: Bound on CPU
* @cpumask: cpumask to indicate for which CPUs this device works
* @list: list head for the management code
* @owner: module reference
@@ -113,6 +119,7 @@ struct clock_event_device {
const char *name;
int rating;
int irq;
+ int bound_on;
const struct cpumask *cpumask;
struct list_head list;
struct module *owner;
@@ -180,15 +187,17 @@ extern int tick_receive_broadcast(void);
#endif
#if defined(CONFIG_GENERIC_CLOCKEVENTS_BROADCAST) && defined(CONFIG_TICK_ONESHOT)
+extern void tick_setup_hrtimer_broadcast(void);
extern int tick_check_broadcast_expired(void);
#else
static inline int tick_check_broadcast_expired(void) { return 0; }
+static inline void tick_setup_hrtimer_broadcast(void) {};
#endif
#ifdef CONFIG_GENERIC_CLOCKEVENTS
-extern void clockevents_notify(unsigned long reason, void *arg);
+extern int clockevents_notify(unsigned long reason, void *arg);
#else
-static inline void clockevents_notify(unsigned long reason, void *arg) {}
+static inline int clockevents_notify(unsigned long reason, void *arg) { return 0; }
#endif
#else /* CONFIG_GENERIC_CLOCKEVENTS_BUILD */
@@ -196,8 +205,9 @@ static inline void clockevents_notify(unsigned long reason, void *arg) {}
static inline void clockevents_suspend(void) {}
static inline void clockevents_resume(void) {}
-static inline void clockevents_notify(unsigned long reason, void *arg) {}
+static inline int clockevents_notify(unsigned long reason, void *arg) { return 0; }
static inline int tick_check_broadcast_expired(void) { return 0; }
+static inline void tick_setup_hrtimer_broadcast(void) {};
#endif
diff --git a/include/linux/hrtimer.h b/include/linux/hrtimer.h
index d19a5c2d2270..e7a8d3fa91d5 100644
--- a/include/linux/hrtimer.h
+++ b/include/linux/hrtimer.h
@@ -96,12 +96,12 @@ enum hrtimer_restart {
* @function: timer expiry callback function
* @base: pointer to the timer base (per cpu and per clock)
* @state: state information (See bit values above)
+ * @start_pid: timer statistics field to store the pid of the task which
+ * started the timer
* @start_site: timer statistics field to store the site where the timer
* was started
* @start_comm: timer statistics field to store the name of the process which
* started the timer
- * @start_pid: timer statistics field to store the pid of the task which
- * started the timer
*
* The hrtimer structure must be initialized by hrtimer_init()
*/
diff --git a/include/linux/sched.h b/include/linux/sched.h
index c399ed826648..7cb07fd26680 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -294,10 +294,14 @@ extern int runqueue_is_locked(int cpu);
#if defined(CONFIG_SMP) && defined(CONFIG_NO_HZ_COMMON)
extern void nohz_balance_enter_idle(int cpu);
extern void set_cpu_sd_state_idle(void);
-extern int get_nohz_timer_target(void);
+extern int get_nohz_timer_target(int pinned);
#else
static inline void nohz_balance_enter_idle(int cpu) { }
static inline void set_cpu_sd_state_idle(void) { }
+static inline int get_nohz_timer_target(int pinned)
+{
+ return smp_processor_id();
+}
#endif
/*
diff --git a/include/linux/workqueue.h b/include/linux/workqueue.h
index 532994651684..1b22c42e9c2d 100644
--- a/include/linux/workqueue.h
+++ b/include/linux/workqueue.h
@@ -180,6 +180,7 @@ struct execute_work {
#ifdef CONFIG_DEBUG_OBJECTS_WORK
extern void __init_work(struct work_struct *work, int onstack);
extern void destroy_work_on_stack(struct work_struct *work);
+extern void destroy_delayed_work_on_stack(struct delayed_work *work);
static inline unsigned int work_static(struct work_struct *work)
{
return *work_data_bits(work) & WORK_STRUCT_STATIC;
@@ -187,6 +188,7 @@ static inline unsigned int work_static(struct work_struct *work)
#else
static inline void __init_work(struct work_struct *work, int onstack) { }
static inline void destroy_work_on_stack(struct work_struct *work) { }
+static inline void destroy_delayed_work_on_stack(struct delayed_work *work) { }
static inline unsigned int work_static(struct work_struct *work) { return 0; }
#endif