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authorPeter Zijlstra <peterz@infradead.org>2018-03-15 13:46:30 +0300
committerIngo Molnar <mingo@kernel.org>2018-03-20 10:23:24 +0300
commit9b8cce52c4b5c08297900bfdcafc6b08d9bc4a27 (patch)
treed6ab6abb1f72998fd12620d54ad8431b83450d42 /include/linux/wait_bit.h
parent6887a56b6e8ef5daf1160f2ebe5cbe38fd8819a2 (diff)
downloadlinux-9b8cce52c4b5c08297900bfdcafc6b08d9bc4a27.tar.xz
sched/wait: Remove the wait_on_atomic_t() API
There are no users left (everyone got converted to wait_var_event()), remove it. Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Mike Galbraith <efault@gmx.de> 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>
Diffstat (limited to 'include/linux/wait_bit.h')
-rw-r--r--include/linux/wait_bit.h27
1 files changed, 0 insertions, 27 deletions
diff --git a/include/linux/wait_bit.h b/include/linux/wait_bit.h
index 3fcdb75d69cf..9318b2166439 100644
--- a/include/linux/wait_bit.h
+++ b/include/linux/wait_bit.h
@@ -10,7 +10,6 @@
struct wait_bit_key {
void *flags;
int bit_nr;
-#define WAIT_ATOMIC_T_BIT_NR -1
unsigned long timeout;
};
@@ -22,21 +21,15 @@ struct wait_bit_queue_entry {
#define __WAIT_BIT_KEY_INITIALIZER(word, bit) \
{ .flags = word, .bit_nr = bit, }
-#define __WAIT_ATOMIC_T_KEY_INITIALIZER(p) \
- { .flags = p, .bit_nr = WAIT_ATOMIC_T_BIT_NR, }
-
typedef int wait_bit_action_f(struct wait_bit_key *key, int mode);
-typedef int wait_atomic_t_action_f(atomic_t *counter, unsigned int mode);
void __wake_up_bit(struct wait_queue_head *wq_head, void *word, int bit);
int __wait_on_bit(struct wait_queue_head *wq_head, struct wait_bit_queue_entry *wbq_entry, wait_bit_action_f *action, unsigned int mode);
int __wait_on_bit_lock(struct wait_queue_head *wq_head, struct wait_bit_queue_entry *wbq_entry, wait_bit_action_f *action, unsigned int mode);
void wake_up_bit(void *word, int bit);
-void wake_up_atomic_t(atomic_t *p);
int out_of_line_wait_on_bit(void *word, int, wait_bit_action_f *action, unsigned int mode);
int out_of_line_wait_on_bit_timeout(void *word, int, wait_bit_action_f *action, unsigned int mode, unsigned long timeout);
int out_of_line_wait_on_bit_lock(void *word, int, wait_bit_action_f *action, unsigned int mode);
-int out_of_line_wait_on_atomic_t(atomic_t *p, wait_atomic_t_action_f action, unsigned int mode);
struct wait_queue_head *bit_waitqueue(void *word, int bit);
extern void __init wait_bit_init(void);
@@ -57,7 +50,6 @@ extern int bit_wait(struct wait_bit_key *key, int mode);
extern int bit_wait_io(struct wait_bit_key *key, int mode);
extern int bit_wait_timeout(struct wait_bit_key *key, int mode);
extern int bit_wait_io_timeout(struct wait_bit_key *key, int mode);
-extern int atomic_t_wait(atomic_t *counter, unsigned int mode);
/**
* wait_on_bit - wait for a bit to be cleared
@@ -243,25 +235,6 @@ wait_on_bit_lock_action(unsigned long *word, int bit, wait_bit_action_f *action,
return out_of_line_wait_on_bit_lock(word, bit, action, mode);
}
-/**
- * wait_on_atomic_t - Wait for an atomic_t to become 0
- * @val: The atomic value being waited on, a kernel virtual address
- * @action: the function used to sleep, which may take special actions
- * @mode: the task state to sleep in
- *
- * Wait for an atomic_t to become 0. We abuse the bit-wait waitqueue table for
- * the purpose of getting a waitqueue, but we set the key to a bit number
- * outside of the target 'word'.
- */
-static inline
-int wait_on_atomic_t(atomic_t *val, wait_atomic_t_action_f action, unsigned mode)
-{
- might_sleep();
- if (atomic_read(val) == 0)
- return 0;
- return out_of_line_wait_on_atomic_t(val, action, mode);
-}
-
extern void init_wait_var_entry(struct wait_bit_queue_entry *wbq_entry, void *var, int flags);
extern void wake_up_var(void *var);
extern wait_queue_head_t *__var_waitqueue(void *p);