From 7b12a79e42304d98cf03f35e522be746dbab1198 Mon Sep 17 00:00:00 2001
From: Ingo Molnar <mingo@kernel.org>
Date: Sun, 5 Mar 2017 12:07:33 +0100
Subject: [PATCH] sched/wait: Re-adjust macro line continuation backslashes in
<linux/wait.h>
References: bnc#971975 VM performance -- page waitqueue
Patch-mainline: v4.13-rc1
Git-commit: 4b1c480bfa3b246e292f4d50167756252a9717ed
So there's over 300 CPP macro line-continuation backslashes in
include/linux/wait.h (!!), which are aligned vertically to make
the macro maze a bit more navigable.
The recent renames and reorganization broke some of them, and
instead of re-aligning them in every patch (which would add
a lot of stylistic noise to the patches and make them less
readable), I just ignored them - and fixed them up in a single
go in this patch.
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Mel Gorman <mgorman@suse.de>
---
include/linux/wait.h | 645 +++++++++++++++++++++++++--------------------------
1 file changed, 322 insertions(+), 323 deletions(-)
diff --git a/include/linux/wait.h b/include/linux/wait.h
index 1338505d8b9f..0805098f3589 100644
--- a/include/linux/wait.h
+++ b/include/linux/wait.h
@@ -53,34 +53,34 @@ struct task_struct;
* Macros for declaration and initialisaton of the datatypes
*/
-#define __WAITQUEUE_INITIALIZER(name, tsk) { \
- .private = tsk, \
- .func = default_wake_function, \
+#define __WAITQUEUE_INITIALIZER(name, tsk) { \
+ .private = tsk, \
+ .func = default_wake_function, \
.task_list = { NULL, NULL } }
-#define DECLARE_WAITQUEUE(name, tsk) \
+#define DECLARE_WAITQUEUE(name, tsk) \
struct wait_queue_entry name = __WAITQUEUE_INITIALIZER(name, tsk)
-#define __WAIT_QUEUE_HEAD_INITIALIZER(name) { \
- .lock = __SPIN_LOCK_UNLOCKED(name.lock), \
+#define __WAIT_QUEUE_HEAD_INITIALIZER(name) { \
+ .lock = __SPIN_LOCK_UNLOCKED(name.lock), \
.task_list = { &(name).task_list, &(name).task_list } }
#define DECLARE_WAIT_QUEUE_HEAD(name) \
struct wait_queue_head name = __WAIT_QUEUE_HEAD_INITIALIZER(name)
-#define __WAIT_BIT_KEY_INITIALIZER(word, bit) \
+#define __WAIT_BIT_KEY_INITIALIZER(word, bit) \
{ .flags = word, .bit_nr = bit, }
-#define __WAIT_ATOMIC_T_KEY_INITIALIZER(p) \
+#define __WAIT_ATOMIC_T_KEY_INITIALIZER(p) \
{ .flags = p, .bit_nr = WAIT_ATOMIC_T_BIT_NR, }
extern void __init_waitqueue_head(struct wait_queue_head *wq_head, const char *name, struct lock_class_key *);
-#define init_waitqueue_head(wq_head) \
- do { \
- static struct lock_class_key __key; \
- \
- __init_waitqueue_head((wq_head), #wq_head, &__key); \
+#define init_waitqueue_head(wq_head) \
+ do { \
+ static struct lock_class_key __key; \
+ \
+ __init_waitqueue_head((wq_head), #wq_head, &__key); \
} while (0)
#ifdef CONFIG_LOCKDEP
@@ -122,13 +122,13 @@ init_waitqueue_func_entry(struct wait_queue_entry *wq_entry, wait_queue_func_t f
* CPU0 - waker CPU1 - waiter
*
* for (;;) {
- * @cond = true; prepare_to_wait(&wq, &wait, state);
+ * @cond = true; prepare_to_wait(&wq_head, &wait, state);
* smp_mb(); // smp_mb() from set_current_state()
- * if (waitqueue_active(wq)) if (@cond)
- * wake_up(wq); break;
+ * if (waitqueue_active(wq_head)) if (@cond)
+ * wake_up(wq_head); break;
* schedule();
* }
- * finish_wait(&wq, &wait);
+ * finish_wait(&wq_head, &wait);
*
* Because without the explicit smp_mb() it's possible for the
* waitqueue_active() load to get hoisted over the @cond store such that we'll
@@ -144,9 +144,9 @@ static inline int waitqueue_active(struct wait_queue_head *wq_head)
/**
* wq_has_sleeper - check if there are any waiting processes
- * @wq: wait queue head
+ * @wq_head: wait queue head
*
- * Returns true if wq has waiting processes
+ * Returns true if wq_head has waiting processes
*
* Please refer to the comment for waitqueue_active.
*/
@@ -231,26 +231,26 @@ struct wait_queue_head *bit_waitqueue(void *word, int bit);
/*
* Wakeup macros to be used to report events to the targets.
*/
-#define wake_up_poll(x, m) \
+#define wake_up_poll(x, m) \
__wake_up(x, TASK_NORMAL, 1, (void *) (m))
-#define wake_up_locked_poll(x, m) \
+#define wake_up_locked_poll(x, m) \
__wake_up_locked_key((x), TASK_NORMAL, (void *) (m))
-#define wake_up_interruptible_poll(x, m) \
+#define wake_up_interruptible_poll(x, m) \
__wake_up(x, TASK_INTERRUPTIBLE, 1, (void *) (m))
-#define wake_up_interruptible_sync_poll(x, m) \
+#define wake_up_interruptible_sync_poll(x, m) \
__wake_up_sync_key((x), TASK_INTERRUPTIBLE, 1, (void *) (m))
-#define ___wait_cond_timeout(condition) \
-({ \
- bool __cond = (condition); \
- if (__cond && !__ret) \
- __ret = 1; \
- __cond || !__ret; \
+#define ___wait_cond_timeout(condition) \
+({ \
+ bool __cond = (condition); \
+ if (__cond && !__ret) \
+ __ret = 1; \
+ __cond || !__ret; \
})
-#define ___wait_is_interruptible(state) \
- (!__builtin_constant_p(state) || \
- state == TASK_INTERRUPTIBLE || state == TASK_KILLABLE) \
+#define ___wait_is_interruptible(state) \
+ (!__builtin_constant_p(state) || \
+ state == TASK_INTERRUPTIBLE || state == TASK_KILLABLE) \
extern void init_wait_entry(struct wait_queue_entry *wq_entry, int flags);
@@ -266,108 +266,108 @@ extern void init_wait_entry(struct wait_queue_entry *wq_entry, int flags);
* otherwise.
*/
-#define ___wait_event(wq, condition, state, exclusive, ret, cmd) \
-({ \
- __label__ __out; \
- struct wait_queue_entry __wq_entry; \
- long __ret = ret; /* explicit shadow */ \
- \
- init_wait_entry(&__wq_entry, exclusive ? WQ_FLAG_EXCLUSIVE : 0);\
- for (;;) { \
- long __int = prepare_to_wait_event(&wq, &__wq_entry, state);\
- \
- if (condition) \
- break; \
- \
- if (___wait_is_interruptible(state) && __int) { \
- __ret = __int; \
- goto __out; \
- } \
- \
- cmd; \
- } \
- finish_wait(&wq, &__wq_entry); \
-__out: __ret; \
+#define ___wait_event(wq_head, condition, state, exclusive, ret, cmd) \
+({ \
+ __label__ __out; \
+ struct wait_queue_entry __wq_entry; \
+ long __ret = ret; /* explicit shadow */ \
+ \
+ init_wait_entry(&__wq_entry, exclusive ? WQ_FLAG_EXCLUSIVE : 0); \
+ for (;;) { \
+ long __int = prepare_to_wait_event(&wq_head, &__wq_entry, state);\
+ \
+ if (condition) \
+ break; \
+ \
+ if (___wait_is_interruptible(state) && __int) { \
+ __ret = __int; \
+ goto __out; \
+ } \
+ \
+ cmd; \
+ } \
+ finish_wait(&wq_head, &__wq_entry); \
+__out: __ret; \
})
-#define __wait_event(wq, condition) \
- (void)___wait_event(wq, condition, TASK_UNINTERRUPTIBLE, 0, 0, \
+#define __wait_event(wq_head, condition) \
+ (void)___wait_event(wq_head, condition, TASK_UNINTERRUPTIBLE, 0, 0, \
schedule())
/**
* wait_event - sleep until a condition gets true
- * @wq: the waitqueue to wait on
+ * @wq_head: the waitqueue to wait on
* @condition: a C expression for the event to wait for
*
* The process is put to sleep (TASK_UNINTERRUPTIBLE) until the
* @condition evaluates to true. The @condition is checked each time
- * the waitqueue @wq is woken up.
+ * the waitqueue @wq_head is woken up.
*
* wake_up() has to be called after changing any variable that could
* change the result of the wait condition.
*/
-#define wait_event(wq, condition) \
-do { \
- might_sleep(); \
- if (condition) \
- break; \
- __wait_event(wq, condition); \
+#define wait_event(wq_head, condition) \
+do { \
+ might_sleep(); \
+ if (condition) \
+ break; \
+ __wait_event(wq_head, condition); \
} while (0)
-#define __io_wait_event(wq, condition) \
- (void)___wait_event(wq, condition, TASK_UNINTERRUPTIBLE, 0, 0, \
+#define __io_wait_event(wq_head, condition) \
+ (void)___wait_event(wq_head, condition, TASK_UNINTERRUPTIBLE, 0, 0, \
io_schedule())
/*
* io_wait_event() -- like wait_event() but with io_schedule()
*/
-#define io_wait_event(wq, condition) \
-do { \
- might_sleep(); \
- if (condition) \
- break; \
- __io_wait_event(wq, condition); \
+#define io_wait_event(wq_head, condition) \
+do { \
+ might_sleep(); \
+ if (condition) \
+ break; \
+ __io_wait_event(wq_head, condition); \
} while (0)
-#define __wait_event_freezable(wq, condition) \
- ___wait_event(wq, condition, TASK_INTERRUPTIBLE, 0, 0, \
+#define __wait_event_freezable(wq_head, condition) \
+ ___wait_event(wq_head, condition, TASK_INTERRUPTIBLE, 0, 0, \
schedule(); try_to_freeze())
/**
* wait_event_freezable - sleep (or freeze) until a condition gets true
- * @wq: the waitqueue to wait on
+ * @wq_head: the waitqueue to wait on
* @condition: a C expression for the event to wait for
*
* The process is put to sleep (TASK_INTERRUPTIBLE -- so as not to contribute
* to system load) until the @condition evaluates to true. The
- * @condition is checked each time the waitqueue @wq is woken up.
+ * @condition is checked each time the waitqueue @wq_head is woken up.
*
* wake_up() has to be called after changing any variable that could
* change the result of the wait condition.
*/
-#define wait_event_freezable(wq, condition) \
-({ \
- int __ret = 0; \
- might_sleep(); \
- if (!(condition)) \
- __ret = __wait_event_freezable(wq, condition); \
- __ret; \
+#define wait_event_freezable(wq_head, condition) \
+({ \
+ int __ret = 0; \
+ might_sleep(); \
+ if (!(condition)) \
+ __ret = __wait_event_freezable(wq_head, condition); \
+ __ret; \
})
-#define __wait_event_timeout(wq, condition, timeout) \
- ___wait_event(wq, ___wait_cond_timeout(condition), \
- TASK_UNINTERRUPTIBLE, 0, timeout, \
+#define __wait_event_timeout(wq_head, condition, timeout) \
+ ___wait_event(wq_head, ___wait_cond_timeout(condition), \
+ TASK_UNINTERRUPTIBLE, 0, timeout, \
__ret = schedule_timeout(__ret))
/**
* wait_event_timeout - sleep until a condition gets true or a timeout elapses
- * @wq: the waitqueue to wait on
+ * @wq_head: the waitqueue to wait on
* @condition: a C expression for the event to wait for
* @timeout: timeout, in jiffies
*
* The process is put to sleep (TASK_UNINTERRUPTIBLE) until the
* @condition evaluates to true. The @condition is checked each time
- * the waitqueue @wq is woken up.
+ * the waitqueue @wq_head is woken up.
*
* wake_up() has to be called after changing any variable that could
* change the result of the wait condition.
@@ -378,83 +378,83 @@ do { \
* or the remaining jiffies (at least 1) if the @condition evaluated
* to %true before the @timeout elapsed.
*/
-#define wait_event_timeout(wq, condition, timeout) \
-({ \
- long __ret = timeout; \
- might_sleep(); \
- if (!___wait_cond_timeout(condition)) \
- __ret = __wait_event_timeout(wq, condition, timeout); \
- __ret; \
+#define wait_event_timeout(wq_head, condition, timeout) \
+({ \
+ long __ret = timeout; \
+ might_sleep(); \
+ if (!___wait_cond_timeout(condition)) \
+ __ret = __wait_event_timeout(wq_head, condition, timeout); \
+ __ret; \
})
-#define __wait_event_freezable_timeout(wq, condition, timeout) \
- ___wait_event(wq, ___wait_cond_timeout(condition), \
- TASK_INTERRUPTIBLE, 0, timeout, \
+#define __wait_event_freezable_timeout(wq_head, condition, timeout) \
+ ___wait_event(wq_head, ___wait_cond_timeout(condition), \
+ TASK_INTERRUPTIBLE, 0, timeout, \
__ret = schedule_timeout(__ret); try_to_freeze())
/*
* like wait_event_timeout() -- except it uses TASK_INTERRUPTIBLE to avoid
* increasing load and is freezable.
*/
-#define wait_event_freezable_timeout(wq, condition, timeout) \
-({ \
- long __ret = timeout; \
- might_sleep(); \
- if (!___wait_cond_timeout(condition)) \
- __ret = __wait_event_freezable_timeout(wq, condition, timeout); \
- __ret; \
+#define wait_event_freezable_timeout(wq_head, condition, timeout) \
+({ \
+ long __ret = timeout; \
+ might_sleep(); \
+ if (!___wait_cond_timeout(condition)) \
+ __ret = __wait_event_freezable_timeout(wq_head, condition, timeout); \
+ __ret; \
})
-#define __wait_event_exclusive_cmd(wq, condition, cmd1, cmd2) \
- (void)___wait_event(wq, condition, TASK_UNINTERRUPTIBLE, 1, 0, \
+#define __wait_event_exclusive_cmd(wq_head, condition, cmd1, cmd2) \
+ (void)___wait_event(wq_head, condition, TASK_UNINTERRUPTIBLE, 1, 0, \
cmd1; schedule(); cmd2)
/*
* Just like wait_event_cmd(), except it sets exclusive flag
*/
-#define wait_event_exclusive_cmd(wq, condition, cmd1, cmd2) \
-do { \
- if (condition) \
- break; \
- __wait_event_exclusive_cmd(wq, condition, cmd1, cmd2); \
+#define wait_event_exclusive_cmd(wq_head, condition, cmd1, cmd2) \
+do { \
+ if (condition) \
+ break; \
+ __wait_event_exclusive_cmd(wq_head, condition, cmd1, cmd2); \
} while (0)
-#define __wait_event_cmd(wq, condition, cmd1, cmd2) \
- (void)___wait_event(wq, condition, TASK_UNINTERRUPTIBLE, 0, 0, \
+#define __wait_event_cmd(wq_head, condition, cmd1, cmd2) \
+ (void)___wait_event(wq_head, condition, TASK_UNINTERRUPTIBLE, 0, 0, \
cmd1; schedule(); cmd2)
/**
* wait_event_cmd - sleep until a condition gets true
- * @wq: the waitqueue to wait on
+ * @wq_head: the waitqueue to wait on
* @condition: a C expression for the event to wait for
* @cmd1: the command will be executed before sleep
* @cmd2: the command will be executed after sleep
*
* The process is put to sleep (TASK_UNINTERRUPTIBLE) until the
* @condition evaluates to true. The @condition is checked each time
- * the waitqueue @wq is woken up.
+ * the waitqueue @wq_head is woken up.
*
* wake_up() has to be called after changing any variable that could
* change the result of the wait condition.
*/
-#define wait_event_cmd(wq, condition, cmd1, cmd2) \
-do { \
- if (condition) \
- break; \
- __wait_event_cmd(wq, condition, cmd1, cmd2); \
+#define wait_event_cmd(wq_head, condition, cmd1, cmd2) \
+do { \
+ if (condition) \
+ break; \
+ __wait_event_cmd(wq_head, condition, cmd1, cmd2); \
} while (0)
-#define __wait_event_interruptible(wq, condition) \
- ___wait_event(wq, condition, TASK_INTERRUPTIBLE, 0, 0, \
+#define __wait_event_interruptible(wq_head, condition) \
+ ___wait_event(wq_head, condition, TASK_INTERRUPTIBLE, 0, 0, \
schedule())
/**
* wait_event_interruptible - sleep until a condition gets true
- * @wq: the waitqueue to wait on
+ * @wq_head: the waitqueue to wait on
* @condition: a C expression for the event to wait for
*
* The process is put to sleep (TASK_INTERRUPTIBLE) until the
* @condition evaluates to true or a signal is received.
- * The @condition is checked each time the waitqueue @wq is woken up.
+ * The @condition is checked each time the waitqueue @wq_head is woken up.
*
* wake_up() has to be called after changing any variable that could
* change the result of the wait condition.
@@ -462,29 +462,29 @@ do { \
* The function will return -ERESTARTSYS if it was interrupted by a
* signal and 0 if @condition evaluated to true.
*/
-#define wait_event_interruptible(wq, condition) \
-({ \
- int __ret = 0; \
- might_sleep(); \
- if (!(condition)) \
- __ret = __wait_event_interruptible(wq, condition); \
- __ret; \
+#define wait_event_interruptible(wq_head, condition) \
+({ \
+ int __ret = 0; \
+ might_sleep(); \
+ if (!(condition)) \
+ __ret = __wait_event_interruptible(wq_head, condition); \
+ __ret; \
})
-#define __wait_event_interruptible_timeout(wq, condition, timeout) \
- ___wait_event(wq, ___wait_cond_timeout(condition), \
- TASK_INTERRUPTIBLE, 0, timeout, \
+#define __wait_event_interruptible_timeout(wq_head, condition, timeout) \
+ ___wait_event(wq_head, ___wait_cond_timeout(condition), \
+ TASK_INTERRUPTIBLE, 0, timeout, \
__ret = schedule_timeout(__ret))
/**
* wait_event_interruptible_timeout - sleep until a condition gets true or a timeout elapses
- * @wq: the waitqueue to wait on
+ * @wq_head: the waitqueue to wait on
* @condition: a C expression for the event to wait for
* @timeout: timeout, in jiffies
*
* The process is put to sleep (TASK_INTERRUPTIBLE) until the
* @condition evaluates to true or a signal is received.
- * The @condition is checked each time the waitqueue @wq is woken up.
+ * The @condition is checked each time the waitqueue @wq_head is woken up.
*
* wake_up() has to be called after changing any variable that could
* change the result of the wait condition.
@@ -496,50 +496,49 @@ do { \
* to %true before the @timeout elapsed, or -%ERESTARTSYS if it was
* interrupted by a signal.
*/
-#define wait_event_interruptible_timeout(wq, condition, timeout) \
-({ \
- long __ret = timeout; \
- might_sleep(); \
- if (!___wait_cond_timeout(condition)) \
- __ret = __wait_event_interruptible_timeout(wq, \
- condition, timeout); \
- __ret; \
+#define wait_event_interruptible_timeout(wq_head, condition, timeout) \
+({ \
+ long __ret = timeout; \
+ might_sleep(); \
+ if (!___wait_cond_timeout(condition)) \
+ __ret = __wait_event_interruptible_timeout(wq_head, \
+ condition, timeout); \
+ __ret; \
})
-#define __wait_event_hrtimeout(wq, condition, timeout, state) \
-({ \
- int __ret = 0; \
- struct hrtimer_sleeper __t; \
- \
- hrtimer_init_on_stack(&__t.timer, CLOCK_MONOTONIC, \
- HRTIMER_MODE_REL); \
- hrtimer_init_sleeper(&__t, current); \
- if ((timeout) != KTIME_MAX) \
- hrtimer_start_range_ns(&__t.timer, timeout, \
- current->timer_slack_ns, \
- HRTIMER_MODE_REL); \
- \
- __ret = ___wait_event(wq, condition, state, 0, 0, \
- if (!__t.task) { \
- __ret = -ETIME; \
- break; \
- } \
- schedule()); \
- \
- hrtimer_cancel(&__t.timer); \
- destroy_hrtimer_on_stack(&__t.timer); \
- __ret; \
+#define __wait_event_hrtimeout(wq_head, condition, timeout, state) \
+({ \
+ int __ret = 0; \
+ struct hrtimer_sleeper __t; \
+ \
+ hrtimer_init_on_stack(&__t.timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL); \
+ hrtimer_init_sleeper(&__t, current); \
+ if ((timeout) != KTIME_MAX) \
+ hrtimer_start_range_ns(&__t.timer, timeout, \
+ current->timer_slack_ns, \
+ HRTIMER_MODE_REL); \
+ \
+ __ret = ___wait_event(wq_head, condition, state, 0, 0, \
+ if (!__t.task) { \
+ __ret = -ETIME; \
+ break; \
+ } \
+ schedule()); \
+ \
+ hrtimer_cancel(&__t.timer); \
+ destroy_hrtimer_on_stack(&__t.timer); \
+ __ret; \
})
/**
* wait_event_hrtimeout - sleep until a condition gets true or a timeout elapses
- * @wq: the waitqueue to wait on
+ * @wq_head: the waitqueue to wait on
* @condition: a C expression for the event to wait for
* @timeout: timeout, as a ktime_t
*
* The process is put to sleep (TASK_UNINTERRUPTIBLE) until the
* @condition evaluates to true or a signal is received.
- * The @condition is checked each time the waitqueue @wq is woken up.
+ * The @condition is checked each time the waitqueue @wq_head is woken up.
*
* wake_up() has to be called after changing any variable that could
* change the result of the wait condition.
@@ -547,25 +546,25 @@ do { \
* The function returns 0 if @condition became true, or -ETIME if the timeout
* elapsed.
*/
-#define wait_event_hrtimeout(wq, condition, timeout) \
-({ \
- int __ret = 0; \
- might_sleep(); \
- if (!(condition)) \
- __ret = __wait_event_hrtimeout(wq, condition, timeout, \
- TASK_UNINTERRUPTIBLE); \
- __ret; \
+#define wait_event_hrtimeout(wq_head, condition, timeout) \
+({ \
+ int __ret = 0; \
+ might_sleep(); \
+ if (!(condition)) \
+ __ret = __wait_event_hrtimeout(wq_head, condition, timeout, \
+ TASK_UNINTERRUPTIBLE); \
+ __ret; \
})
/**
* wait_event_interruptible_hrtimeout - sleep until a condition gets true or a timeout elapses
- * @wq: the waitqueue to wait on
+ * @wq_head: the waitqueue to wait on
* @condition: a C expression for the event to wait for
* @timeout: timeout, as a ktime_t
*
* The process is put to sleep (TASK_INTERRUPTIBLE) until the
* @condition evaluates to true or a signal is received.
- * The @condition is checked each time the waitqueue @wq is woken up.
+ * The @condition is checked each time the waitqueue @wq_head is woken up.
*
* wake_up() has to be called after changing any variable that could
* change the result of the wait condition.
@@ -573,73 +572,73 @@ do { \
* The function returns 0 if @condition became true, -ERESTARTSYS if it was
* interrupted by a signal, or -ETIME if the timeout elapsed.
*/
-#define wait_event_interruptible_hrtimeout(wq, condition, timeout) \
-({ \
- long __ret = 0; \
- might_sleep(); \
- if (!(condition)) \
- __ret = __wait_event_hrtimeout(wq, condition, timeout, \
- TASK_INTERRUPTIBLE); \
- __ret; \
+#define wait_event_interruptible_hrtimeout(wq, condition, timeout) \
+({ \
+ long __ret = 0; \
+ might_sleep(); \
+ if (!(condition)) \
+ __ret = __wait_event_hrtimeout(wq, condition, timeout, \
+ TASK_INTERRUPTIBLE); \
+ __ret; \
})
-#define __wait_event_interruptible_exclusive(wq, condition) \
- ___wait_event(wq, condition, TASK_INTERRUPTIBLE, 1, 0, \
+#define __wait_event_interruptible_exclusive(wq, condition) \
+ ___wait_event(wq, condition, TASK_INTERRUPTIBLE, 1, 0, \
schedule())
-#define wait_event_interruptible_exclusive(wq, condition) \
-({ \
- int __ret = 0; \
- might_sleep(); \
- if (!(condition)) \
- __ret = __wait_event_interruptible_exclusive(wq, condition);\
- __ret; \
+#define wait_event_interruptible_exclusive(wq, condition) \
+({ \
+ int __ret = 0; \
+ might_sleep(); \
+ if (!(condition)) \
+ __ret = __wait_event_interruptible_exclusive(wq, condition); \
+ __ret; \
})
-#define __wait_event_killable_exclusive(wq, condition) \
- ___wait_event(wq, condition, TASK_KILLABLE, 1, 0, \
+#define __wait_event_killable_exclusive(wq, condition) \
+ ___wait_event(wq, condition, TASK_KILLABLE, 1, 0, \
schedule())
-#define wait_event_killable_exclusive(wq, condition) \
-({ \
- int __ret = 0; \
- might_sleep(); \
- if (!(condition)) \
- __ret = __wait_event_killable_exclusive(wq, condition); \
- __ret; \
+#define wait_event_killable_exclusive(wq, condition) \
+({ \
+ int __ret = 0; \
+ might_sleep(); \
+ if (!(condition)) \
+ __ret = __wait_event_killable_exclusive(wq, condition); \
+ __ret; \
})
-#define __wait_event_freezable_exclusive(wq, condition) \
- ___wait_event(wq, condition, TASK_INTERRUPTIBLE, 1, 0, \
+#define __wait_event_freezable_exclusive(wq, condition) \
+ ___wait_event(wq, condition, TASK_INTERRUPTIBLE, 1, 0, \
schedule(); try_to_freeze())
-#define wait_event_freezable_exclusive(wq, condition) \
-({ \
- int __ret = 0; \
- might_sleep(); \
- if (!(condition)) \
- __ret = __wait_event_freezable_exclusive(wq, condition);\
- __ret; \
+#define wait_event_freezable_exclusive(wq, condition) \
+({ \
+ int __ret = 0; \
+ might_sleep(); \
+ if (!(condition)) \
+ __ret = __wait_event_freezable_exclusive(wq, condition); \
+ __ret; \
})
extern int do_wait_intr(wait_queue_head_t *, wait_queue_entry_t *);
extern int do_wait_intr_irq(wait_queue_head_t *, wait_queue_entry_t *);
-#define __wait_event_interruptible_locked(wq, condition, exclusive, fn) \
-({ \
- int __ret; \
- DEFINE_WAIT(__wait); \
- if (exclusive) \
- __wait.flags |= WQ_FLAG_EXCLUSIVE; \
- do { \
- __ret = fn(&(wq), &__wait); \
- if (__ret) \
- break; \
- } while (!(condition)); \
- __remove_wait_queue(&(wq), &__wait); \
- __set_current_state(TASK_RUNNING); \
- __ret; \
+#define __wait_event_interruptible_locked(wq, condition, exclusive, fn) \
+({ \
+ int __ret; \
+ DEFINE_WAIT(__wait); \
+ if (exclusive) \
+ __wait.flags |= WQ_FLAG_EXCLUSIVE; \
+ do { \
+ __ret = fn(&(wq), &__wait); \
+ if (__ret) \
+ break; \
+ } while (!(condition)); \
+ __remove_wait_queue(&(wq), &__wait); \
+ __set_current_state(TASK_RUNNING); \
+ __ret; \
})
@@ -666,8 +665,8 @@ extern int do_wait_intr_irq(wait_queue_head_t *, wait_queue_entry_t *);
* The function will return -ERESTARTSYS if it was interrupted by a
* signal and 0 if @condition evaluated to true.
*/
-#define wait_event_interruptible_locked(wq, condition) \
- ((condition) \
+#define wait_event_interruptible_locked(wq, condition) \
+ ((condition) \
? 0 : __wait_event_interruptible_locked(wq, condition, 0, do_wait_intr))
/**
@@ -693,8 +692,8 @@ extern int do_wait_intr_irq(wait_queue_head_t *, wait_queue_entry_t *);
* The function will return -ERESTARTSYS if it was interrupted by a
* signal and 0 if @condition evaluated to true.
*/
-#define wait_event_interruptible_locked_irq(wq, condition) \
- ((condition) \
+#define wait_event_interruptible_locked_irq(wq, condition) \
+ ((condition) \
? 0 : __wait_event_interruptible_locked(wq, condition, 0, do_wait_intr_irq))
/**
@@ -724,8 +723,8 @@ extern int do_wait_intr_irq(wait_queue_head_t *, wait_queue_entry_t *);
* The function will return -ERESTARTSYS if it was interrupted by a
* signal and 0 if @condition evaluated to true.
*/
-#define wait_event_interruptible_exclusive_locked(wq, condition) \
- ((condition) \
+#define wait_event_interruptible_exclusive_locked(wq, condition) \
+ ((condition) \
? 0 : __wait_event_interruptible_locked(wq, condition, 1, do_wait_intr))
/**
@@ -755,12 +754,12 @@ extern int do_wait_intr_irq(wait_queue_head_t *, wait_queue_entry_t *);
* The function will return -ERESTARTSYS if it was interrupted by a
* signal and 0 if @condition evaluated to true.
*/
-#define wait_event_interruptible_exclusive_locked_irq(wq, condition) \
- ((condition) \
+#define wait_event_interruptible_exclusive_locked_irq(wq, condition) \
+ ((condition) \
? 0 : __wait_event_interruptible_locked(wq, condition, 1, do_wait_intr_irq))
-#define __wait_event_killable(wq, condition) \
+#define __wait_event_killable(wq, condition) \
___wait_event(wq, condition, TASK_KILLABLE, 0, 0, schedule())
/**
@@ -778,21 +777,21 @@ extern int do_wait_intr_irq(wait_queue_head_t *, wait_queue_entry_t *);
* The function will return -ERESTARTSYS if it was interrupted by a
* signal and 0 if @condition evaluated to true.
*/
-#define wait_event_killable(wq, condition) \
-({ \
- int __ret = 0; \
- might_sleep(); \
- if (!(condition)) \
- __ret = __wait_event_killable(wq, condition); \
- __ret; \
+#define wait_event_killable(wq_head, condition) \
+({ \
+ int __ret = 0; \
+ might_sleep(); \
+ if (!(condition)) \
+ __ret = __wait_event_killable(wq_head, condition); \
+ __ret; \
})
-#define __wait_event_lock_irq(wq, condition, lock, cmd) \
- (void)___wait_event(wq, condition, TASK_UNINTERRUPTIBLE, 0, 0, \
- spin_unlock_irq(&lock); \
- cmd; \
- schedule(); \
+#define __wait_event_lock_irq(wq_head, condition, lock, cmd) \
+ (void)___wait_event(wq_head, condition, TASK_UNINTERRUPTIBLE, 0, 0, \
+ spin_unlock_irq(&lock); \
+ cmd; \
+ schedule(); \
spin_lock_irq(&lock))
/**
@@ -800,7 +799,7 @@ extern int do_wait_intr_irq(wait_queue_head_t *, wait_queue_entry_t *);
* condition is checked under the lock. This
* is expected to be called with the lock
* taken.
- * @wq: the waitqueue to wait on
+ * @wq_head: the waitqueue to wait on
* @condition: a C expression for the event to wait for
* @lock: a locked spinlock_t, which will be released before cmd
* and schedule() and reacquired afterwards.
@@ -809,7 +808,7 @@ extern int do_wait_intr_irq(wait_queue_head_t *, wait_queue_entry_t *);
*
* The process is put to sleep (TASK_UNINTERRUPTIBLE) until the
* @condition evaluates to true. The @condition is checked each time
- * the waitqueue @wq is woken up.
+ * the waitqueue @wq_head is woken up.
*
* wake_up() has to be called after changing any variable that could
* change the result of the wait condition.
@@ -818,11 +817,11 @@ extern int do_wait_intr_irq(wait_queue_head_t *, wait_queue_entry_t *);
* dropped before invoking the cmd and going to sleep and is reacquired
* afterwards.
*/
-#define wait_event_lock_irq_cmd(wq, condition, lock, cmd) \
-do { \
- if (condition) \
- break; \
- __wait_event_lock_irq(wq, condition, lock, cmd); \
+#define wait_event_lock_irq_cmd(wq_head, condition, lock, cmd) \
+do { \
+ if (condition) \
+ break; \
+ __wait_event_lock_irq(wq_head, condition, lock, cmd); \
} while (0)
/**
@@ -830,14 +829,14 @@ do { \
* condition is checked under the lock. This
* is expected to be called with the lock
* taken.
- * @wq: the waitqueue to wait on
+ * @wq_head: the waitqueue to wait on
* @condition: a C expression for the event to wait for
* @lock: a locked spinlock_t, which will be released before schedule()
* and reacquired afterwards.
*
* The process is put to sleep (TASK_UNINTERRUPTIBLE) until the
* @condition evaluates to true. The @condition is checked each time
- * the waitqueue @wq is woken up.
+ * the waitqueue @wq_head is woken up.
*
* wake_up() has to be called after changing any variable that could
* change the result of the wait condition.
@@ -845,26 +844,26 @@ do { \
* This is supposed to be called while holding the lock. The lock is
* dropped before going to sleep and is reacquired afterwards.
*/
-#define wait_event_lock_irq(wq, condition, lock) \
-do { \
- if (condition) \
- break; \
- __wait_event_lock_irq(wq, condition, lock, ); \
+#define wait_event_lock_irq(wq_head, condition, lock) \
+do { \
+ if (condition) \
+ break; \
+ __wait_event_lock_irq(wq_head, condition, lock, ); \
} while (0)
-#define __wait_event_interruptible_lock_irq(wq, condition, lock, cmd) \
- ___wait_event(wq, condition, TASK_INTERRUPTIBLE, 0, 0, \
- spin_unlock_irq(&lock); \
- cmd; \
- schedule(); \
+#define __wait_event_interruptible_lock_irq(wq_head, condition, lock, cmd) \
+ ___wait_event(wq_head, condition, TASK_INTERRUPTIBLE, 0, 0, \
+ spin_unlock_irq(&lock); \
+ cmd; \
+ schedule(); \
spin_lock_irq(&lock))
/**
* wait_event_interruptible_lock_irq_cmd - sleep until a condition gets true.
* The condition is checked under the lock. This is expected to
* be called with the lock taken.
- * @wq: the waitqueue to wait on
+ * @wq_head: the waitqueue to wait on
* @condition: a C expression for the event to wait for
* @lock: a locked spinlock_t, which will be released before cmd and
* schedule() and reacquired afterwards.
@@ -873,7 +872,7 @@ do { \
*
* The process is put to sleep (TASK_INTERRUPTIBLE) until the
* @condition evaluates to true or a signal is received. The @condition is
- * checked each time the waitqueue @wq is woken up.
+ * checked each time the waitqueue @wq_head is woken up.
*
* wake_up() has to be called after changing any variable that could
* change the result of the wait condition.
@@ -885,27 +884,27 @@ do { \
* The macro will return -ERESTARTSYS if it was interrupted by a signal
* and 0 if @condition evaluated to true.
*/
-#define wait_event_interruptible_lock_irq_cmd(wq, condition, lock, cmd) \
-({ \
- int __ret = 0; \
- if (!(condition)) \
- __ret = __wait_event_interruptible_lock_irq(wq, \
- condition, lock, cmd); \
- __ret; \
+#define wait_event_interruptible_lock_irq_cmd(wq_head, condition, lock, cmd) \
+({ \
+ int __ret = 0; \
+ if (!(condition)) \
+ __ret = __wait_event_interruptible_lock_irq(wq_head, \
+ condition, lock, cmd); \
+ __ret; \
})
/**
* wait_event_interruptible_lock_irq - sleep until a condition gets true.
* The condition is checked under the lock. This is expected
* to be called with the lock taken.
- * @wq: the waitqueue to wait on
+ * @wq_head: the waitqueue to wait on
* @condition: a C expression for the event to wait for
* @lock: a locked spinlock_t, which will be released before schedule()
* and reacquired afterwards.
*
* The process is put to sleep (TASK_INTERRUPTIBLE) until the
* @condition evaluates to true or signal is received. The @condition is
- * checked each time the waitqueue @wq is woken up.
+ * checked each time the waitqueue @wq_head is woken up.
*
* wake_up() has to be called after changing any variable that could
* change the result of the wait condition.
@@ -916,28 +915,28 @@ do { \
* The macro will return -ERESTARTSYS if it was interrupted by a signal
* and 0 if @condition evaluated to true.
*/
-#define wait_event_interruptible_lock_irq(wq, condition, lock) \
-({ \
- int __ret = 0; \
- if (!(condition)) \
- __ret = __wait_event_interruptible_lock_irq(wq, \
- condition, lock,); \
- __ret; \
+#define wait_event_interruptible_lock_irq(wq_head, condition, lock) \
+({ \
+ int __ret = 0; \
+ if (!(condition)) \
+ __ret = __wait_event_interruptible_lock_irq(wq_head, \
+ condition, lock,); \
+ __ret; \
})
-#define __wait_event_interruptible_lock_irq_timeout(wq, condition, \
- lock, timeout) \
- ___wait_event(wq, ___wait_cond_timeout(condition), \
- TASK_INTERRUPTIBLE, 0, timeout, \
- spin_unlock_irq(&lock); \
- __ret = schedule_timeout(__ret); \
+#define __wait_event_interruptible_lock_irq_timeout(wq_head, condition, \
+ lock, timeout) \
+ ___wait_event(wq_head, ___wait_cond_timeout(condition), \
+ TASK_INTERRUPTIBLE, 0, timeout, \
+ spin_unlock_irq(&lock); \
+ __ret = schedule_timeout(__ret); \
spin_lock_irq(&lock));
/**
* wait_event_interruptible_lock_irq_timeout - sleep until a condition gets
* true or a timeout elapses. The condition is checked under
* the lock. This is expected to be called with the lock taken.
- * @wq: the waitqueue to wait on
+ * @wq_head: the waitqueue to wait on
* @condition: a C expression for the event to wait for
* @lock: a locked spinlock_t, which will be released before schedule()
* and reacquired afterwards.
@@ -945,7 +944,7 @@ do { \
*
* The process is put to sleep (TASK_INTERRUPTIBLE) until the
* @condition evaluates to true or signal is received. The @condition is
- * checked each time the waitqueue @wq is woken up.
+ * checked each time the waitqueue @wq_head is woken up.
*
* wake_up() has to be called after changing any variable that could
* change the result of the wait condition.
@@ -957,14 +956,14 @@ do { \
* was interrupted by a signal, and the remaining jiffies otherwise
* if the condition evaluated to true before the timeout elapsed.
*/
-#define wait_event_interruptible_lock_irq_timeout(wq, condition, lock, \
- timeout) \
-({ \
- long __ret = timeout; \
- if (!___wait_cond_timeout(condition)) \
- __ret = __wait_event_interruptible_lock_irq_timeout( \
- wq, condition, lock, timeout); \
- __ret; \
+#define wait_event_interruptible_lock_irq_timeout(wq_head, condition, lock, \
+ timeout) \
+({ \
+ long __ret = timeout; \
+ if (!___wait_cond_timeout(condition)) \
+ __ret = __wait_event_interruptible_lock_irq_timeout( \
+ wq_head, condition, lock, timeout); \
+ __ret; \
})
/*
@@ -979,32 +978,32 @@ int woken_wake_function(struct wait_queue_entry *wq_entry, unsigned mode, int sy
int autoremove_wake_function(struct wait_queue_entry *wq_entry, unsigned mode, int sync, void *key);
int wake_bit_function(struct wait_queue_entry *wq_entry, unsigned mode, int sync, void *key);
-#define DEFINE_WAIT_FUNC(name, function) \
- struct wait_queue_entry name = { \
- .private = current, \
- .func = function, \
- .task_list = LIST_HEAD_INIT((name).task_list), \
+#define DEFINE_WAIT_FUNC(name, function) \
+ struct wait_queue_entry name = { \
+ .private = current, \
+ .func = function, \
+ .task_list = LIST_HEAD_INIT((name).task_list), \
}
#define DEFINE_WAIT(name) DEFINE_WAIT_FUNC(name, autoremove_wake_function)
-#define DEFINE_WAIT_BIT(name, word, bit) \
- struct wait_bit_queue_entry name = { \
- .key = __WAIT_BIT_KEY_INITIALIZER(word, bit), \
- .wq_entry = { \
- .private = current, \
- .func = wake_bit_function, \
- .task_list = \
- LIST_HEAD_INIT((name).wq_entry.task_list), \
- }, \
+#define DEFINE_WAIT_BIT(name, word, bit) \
+ struct wait_bit_queue_entry name = { \
+ .key = __WAIT_BIT_KEY_INITIALIZER(word, bit), \
+ .wq_entry = { \
+ .private = current, \
+ .func = wake_bit_function, \
+ .task_list = \
+ LIST_HEAD_INIT((name).wq_entry.task_list), \
+ }, \
}
-#define init_wait(wait) \
- do { \
- (wait)->private = current; \
- (wait)->func = autoremove_wake_function; \
- INIT_LIST_HEAD(&(wait)->task_list); \
- (wait)->flags = 0; \
+#define init_wait(wait) \
+ do { \
+ (wait)->private = current; \
+ (wait)->func = autoremove_wake_function; \
+ INIT_LIST_HEAD(&(wait)->task_list); \
+ (wait)->flags = 0; \
} while (0)