1 files changed, 164 insertions, 0 deletions
diff --git a/include/linux/wait.h b/include/linux/wait.h
index 168dfe122dd3..7cb64d4b499d 100644
--- a/include/linux/wait.h
+++ b/include/linux/wait.h
@@ -550,6 +550,170 @@ do {									\
        __ret;                                                          \
 })
+#define __wait_event_lock_irq(wq, condition, lock, cmd)                 \
+do {                                                                    \
+        DEFINE_WAIT(__wait);                                            \
+                                                                        \
+        for (;;) {                                                      \
+                prepare_to_wait(&wq, &__wait, TASK_UNINTERRUPTIBLE);    \
+                if (condition)                                          \
+                        break;                                          \
+                spin_unlock_irq(&lock);                                 \
+                cmd;                                                    \
+                schedule();                                             \
+                spin_lock_irq(&lock);                                   \
+        }                                                               \
+        finish_wait(&wq, &__wait);                                      \
+} while (0)
+/**
+ * wait_event_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
+ * @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.
+ * @cmd: a command which is invoked outside the critical section before
+ *       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.
+ *
+ * wake_up() has to be called after changing any variable that could
+ * change the result of the wait condition.
+ *
+ * This is supposed to be called while holding the lock. The lock is
+ * 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);                \
+} while (0)
+/**
+ * wait_event_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
+ * @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.
+ *
+ * wake_up() has to be called after changing any variable that could
+ * change the result of the wait condition.
+ *
+ * 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, );                   \
+} while (0)
+#define __wait_event_interruptible_lock_irq(wq, condition,              \
+                                            lock, ret, cmd)             \
+do {                                                                    \
+        DEFINE_WAIT(__wait);                                            \
+                                                                        \
+        for (;;) {                                                      \
+                prepare_to_wait(&wq, &__wait, TASK_INTERRUPTIBLE);      \
+                if (condition)                                          \
+                        break;                                          \
+                if (signal_pending(current)) {                          \
+                        ret = -ERESTARTSYS;                             \
+                        break;                                          \
+                }                                                       \
+                spin_unlock_irq(&lock);                                 \
+                cmd;                                                    \
+                schedule();                                             \
+                spin_lock_irq(&lock);                                   \
+        }                                                               \
+        finish_wait(&wq, &__wait);                                      \
+} while (0)
+/**
+ * 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
+ * @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.
+ * @cmd: a command which is invoked outside the critical section before
+ *       sleep
+ *
+ * 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.
+ *
+ * wake_up() has to be called after changing any variable that could
+ * change the result of the wait condition.
+ *
+ * This is supposed to be called while holding the lock. The lock is
+ * dropped before invoking the cmd and going to sleep and is reacquired
+ * afterwards.
+ *
+ * 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))                                               \
+                __wait_event_interruptible_lock_irq(wq, condition,      \
+                                                    lock, __ret, 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
+ * @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.
+ *
+ * wake_up() has to be called after changing any variable that could
+ * change the result of the wait condition.
+ *
+ * This is supposed to be called while holding the lock. The lock is
+ * dropped before going to sleep and is reacquired afterwards.
+ *
+ * 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))                                               \
+                __wait_event_interruptible_lock_irq(wq, condition,      \
+                                                    lock, __ret, );     \
+        __ret;                                                          \
+})
 /*
 * These are the old interfaces to sleep waiting for an event.
 * They are racy.  DO NOT use them, use the wait_event* interfaces above.

diff --git a/include/linux/wait.h b/include/linux/wait.h index 168dfe122dd3..7cb64d4b499d 100644 --- a/include/linux/wait.h +++ b/include/linux/wait.h
@@ -550,6 +550,170 @@ do { \
550	__ret; \	550	__ret; \
551	})	551	})
552		552
		553
		554	#define __wait_event_lock_irq(wq, condition, lock, cmd) \
		555	do { \
		556	DEFINE_WAIT(__wait); \
		557	\
		558	for (;;) { \
		559	prepare_to_wait(&wq, &__wait, TASK_UNINTERRUPTIBLE); \
		560	if (condition) \
		561	break; \
		562	spin_unlock_irq(&lock); \
		563	cmd; \
		564	schedule(); \
		565	spin_lock_irq(&lock); \
		566	} \
		567	finish_wait(&wq, &__wait); \
		568	} while (0)
		569
		570	/**
		571	* wait_event_lock_irq_cmd - sleep until a condition gets true. The
		572	* condition is checked under the lock. This
		573	* is expected to be called with the lock
		574	* taken.
		575	* @wq: the waitqueue to wait on
		576	* @condition: a C expression for the event to wait for
		577	* @lock: a locked spinlock_t, which will be released before cmd
		578	* and schedule() and reacquired afterwards.
		579	* @cmd: a command which is invoked outside the critical section before
		580	* sleep
		581	*
		582	* The process is put to sleep (TASK_UNINTERRUPTIBLE) until the
		583	* @condition evaluates to true. The @condition is checked each time
		584	* the waitqueue @wq is woken up.
		585	*
		586	* wake_up() has to be called after changing any variable that could
		587	* change the result of the wait condition.
		588	*
		589	* This is supposed to be called while holding the lock. The lock is
		590	* dropped before invoking the cmd and going to sleep and is reacquired
		591	* afterwards.
		592	*/
		593	#define wait_event_lock_irq_cmd(wq, condition, lock, cmd) \
		594	do { \
		595	if (condition) \
		596	break; \
		597	__wait_event_lock_irq(wq, condition, lock, cmd); \
		598	} while (0)
		599
		600	/**
		601	* wait_event_lock_irq - sleep until a condition gets true. The
		602	* condition is checked under the lock. This
		603	* is expected to be called with the lock
		604	* taken.
		605	* @wq: the waitqueue to wait on
		606	* @condition: a C expression for the event to wait for
		607	* @lock: a locked spinlock_t, which will be released before schedule()
		608	* and reacquired afterwards.
		609	*
		610	* The process is put to sleep (TASK_UNINTERRUPTIBLE) until the
		611	* @condition evaluates to true. The @condition is checked each time
		612	* the waitqueue @wq is woken up.
		613	*
		614	* wake_up() has to be called after changing any variable that could
		615	* change the result of the wait condition.
		616	*
		617	* This is supposed to be called while holding the lock. The lock is
		618	* dropped before going to sleep and is reacquired afterwards.
		619	*/
		620	#define wait_event_lock_irq(wq, condition, lock) \
		621	do { \
		622	if (condition) \
		623	break; \
		624	__wait_event_lock_irq(wq, condition, lock, ); \
		625	} while (0)
		626
		627
		628	#define __wait_event_interruptible_lock_irq(wq, condition, \
		629	lock, ret, cmd) \
		630	do { \
		631	DEFINE_WAIT(__wait); \
		632	\
		633	for (;;) { \
		634	prepare_to_wait(&wq, &__wait, TASK_INTERRUPTIBLE); \
		635	if (condition) \
		636	break; \
		637	if (signal_pending(current)) { \
		638	ret = -ERESTARTSYS; \
		639	break; \
		640	} \
		641	spin_unlock_irq(&lock); \
		642	cmd; \
		643	schedule(); \
		644	spin_lock_irq(&lock); \
		645	} \
		646	finish_wait(&wq, &__wait); \
		647	} while (0)
		648
		649	/**
		650	* wait_event_interruptible_lock_irq_cmd - sleep until a condition gets true.
		651	* The condition is checked under the lock. This is expected to
		652	* be called with the lock taken.
		653	* @wq: the waitqueue to wait on
		654	* @condition: a C expression for the event to wait for
		655	* @lock: a locked spinlock_t, which will be released before cmd and
		656	* schedule() and reacquired afterwards.
		657	* @cmd: a command which is invoked outside the critical section before
		658	* sleep
		659	*
		660	* The process is put to sleep (TASK_INTERRUPTIBLE) until the
		661	* @condition evaluates to true or a signal is received. The @condition is
		662	* checked each time the waitqueue @wq is woken up.
		663	*
		664	* wake_up() has to be called after changing any variable that could
		665	* change the result of the wait condition.
		666	*
		667	* This is supposed to be called while holding the lock. The lock is
		668	* dropped before invoking the cmd and going to sleep and is reacquired
		669	* afterwards.
		670	*
		671	* The macro will return -ERESTARTSYS if it was interrupted by a signal
		672	* and 0 if @condition evaluated to true.
		673	*/
		674	#define wait_event_interruptible_lock_irq_cmd(wq, condition, lock, cmd) \
		675	({ \
		676	int __ret = 0; \
		677	\
		678	if (!(condition)) \
		679	__wait_event_interruptible_lock_irq(wq, condition, \
		680	lock, __ret, cmd); \
		681	__ret; \
		682	})
		683
		684	/**
		685	* wait_event_interruptible_lock_irq - sleep until a condition gets true.
		686	* The condition is checked under the lock. This is expected
		687	* to be called with the lock taken.
		688	* @wq: the waitqueue to wait on
		689	* @condition: a C expression for the event to wait for
		690	* @lock: a locked spinlock_t, which will be released before schedule()
		691	* and reacquired afterwards.
		692	*
		693	* The process is put to sleep (TASK_INTERRUPTIBLE) until the
		694	* @condition evaluates to true or signal is received. The @condition is
		695	* checked each time the waitqueue @wq is woken up.
		696	*
		697	* wake_up() has to be called after changing any variable that could
		698	* change the result of the wait condition.
		699	*
		700	* This is supposed to be called while holding the lock. The lock is
		701	* dropped before going to sleep and is reacquired afterwards.
		702	*
		703	* The macro will return -ERESTARTSYS if it was interrupted by a signal
		704	* and 0 if @condition evaluated to true.
		705	*/
		706	#define wait_event_interruptible_lock_irq(wq, condition, lock) \
		707	({ \
		708	int __ret = 0; \
		709	\
		710	if (!(condition)) \
		711	__wait_event_interruptible_lock_irq(wq, condition, \
		712	lock, __ret, ); \
		713	__ret; \
		714	})
		715
		716
553	/*	717	/*
554	* These are the old interfaces to sleep waiting for an event.	718	* These are the old interfaces to sleep waiting for an event.
555	* They are racy. DO NOT use them, use the wait_event* interfaces above.	719	* They are racy. DO NOT use them, use the wait_event* interfaces above.