The patch titled
timer: add on-stack deferrable timer interfaces
has been added to the -mm tree. Its filename is
timer-add-on-stack-deferrable-timer-interfaces.patch
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------------------------------------------------------
Subject: timer: add on-stack deferrable timer interfaces
From: Jesse Barnes <jbarnes@xxxxxxxxxxxxxxxx>
In some cases (for instance with kernel threads) it may be desireable to
use on-stack deferrable timers to get their power saving benefits. Add
interfaces to support this for the IPS driver.
Signed-off-by: Jesse Barnes <jbarnes@xxxxxxxxxxxxxxxx>
Cc: Venki Pallipadi <venkatesh.pallipadi@xxxxxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxx>
Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Cc: "H. Peter Anvin" <hpa@xxxxxxxxx>
Cc: Arjan van de Ven <arjan@xxxxxxxxxxxxx>
Cc: Matthew Garrett <mjg59@xxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
include/linux/timer.h | 15 +++++++++++++++
kernel/timer.c | 13 +++++++++++++
2 files changed, 28 insertions(+)
diff -puN include/linux/timer.h~timer-add-on-stack-deferrable-timer-interfaces include/linux/timer.h
--- a/include/linux/timer.h~timer-add-on-stack-deferrable-timer-interfaces
+++ a/include/linux/timer.h
@@ -100,6 +100,13 @@ void init_timer_deferrable_key(struct ti
setup_timer_on_stack_key((timer), #timer, &__key, \
(fn), (data)); \
} while (0)
+#define setup_deferrable_timer_on_stack(timer, fn, data) \
+ do { \
+ static struct lock_class_key __key; \
+ setup_deferrable_timer_on_stack_key((timer), #timer, \
+ &__key, (fn), \
+ (data)); \
+ } while (0)
#else
#define init_timer(timer)\
init_timer_key((timer), NULL, NULL)
@@ -111,6 +118,8 @@ void init_timer_deferrable_key(struct ti
setup_timer_key((timer), NULL, NULL, (fn), (data))
#define setup_timer_on_stack(timer, fn, data)\
setup_timer_on_stack_key((timer), NULL, NULL, (fn), (data))
+#define setup_deferrable_timer_on_stack(timer, fn, data)\
+ setup_deferrable_timer_on_stack_key((timer), NULL, NULL, (fn), (data))
#endif
#ifdef CONFIG_DEBUG_OBJECTS_TIMERS
@@ -150,6 +159,12 @@ static inline void setup_timer_on_stack_
init_timer_on_stack_key(timer, name, key);
}
+extern void setup_deferrable_timer_on_stack_key(struct timer_list *timer,
+ const char *name,
+ struct lock_class_key *key,
+ void (*function)(unsigned long),
+ unsigned long data);
+
/**
* timer_pending - is a timer pending?
* @timer: the timer in question
diff -puN kernel/timer.c~timer-add-on-stack-deferrable-timer-interfaces kernel/timer.c
--- a/kernel/timer.c~timer-add-on-stack-deferrable-timer-interfaces
+++ a/kernel/timer.c
@@ -577,6 +577,19 @@ static void __init_timer(struct timer_li
lockdep_init_map(&timer->lockdep_map, name, key, 0);
}
+void setup_deferrable_timer_on_stack_key(struct timer_list *timer,
+ const char *name,
+ struct lock_class_key *key,
+ void (*function)(unsigned long),
+ unsigned long data)
+{
+ timer->function = function;
+ timer->data = data;
+ init_timer_on_stack_key(timer, name, key);
+ timer_set_deferrable(timer);
+}
+EXPORT_SYMBOL_GPL(setup_deferrable_timer_on_stack_key);
+
/**
* init_timer_key - initialize a timer
* @timer: the timer to be initialized
_
Patches currently in -mm which might be from jbarnes@xxxxxxxxxxxxxxxx are
origin.patch
linux-next.patch
drivers-pci-intel-iommuc-errors-with-smaller-iommu-widths.patch
drivers-pci-intel-iommuc-errors-with-smaller-iommu-widths-fix.patch
timer-add-on-stack-deferrable-timer-interfaces.patch
x86-platform-driver-intelligent-power-sharing-driver.patch
agp-amd64-fix-pci-reference-leaks.patch
panic-allow-taint-flag-for-warnings-to-be-changed-from-taint_warn.patch
panic-add-taint-flag-taint_firmware_workaround-i.patch
pci-dmar-combine-the-bios-dmar-table-warning-messages.patch
pci-dmar-tone-down-warnings-about-invalid-bios-dmar-tables.patch
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