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sched: Remove preempt_offset argument from __might_sleep() 

All callers hand in 0 and never will hand in anything else.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lkml.kernel.org/r/20210923165358.054321586@linutronix.de
This commit is contained in:
Thomas Gleixner 2021-09-23 18:54:38 +02:00 committed by Peter Zijlstra
parent 7b5ff4bb9a
commit 42a387566c
3 changed files with 6 additions and 7 deletions
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7
include/linux/kernel.h
View File

@ -112,7 +112,7 @@ static __always_inline void might_resched(void)
#ifdef CONFIG_DEBUG_ATOMIC_SLEEP
extern void __might_resched(const char *file, int line, int preempt_offset);
extern void __might_sleep(const char *file, int line, int preempt_offset);
extern void __might_sleep(const char *file, int line);
extern void __cant_sleep(const char *file, int line, int preempt_offset);
extern void __cant_migrate(const char *file, int line);
@ -129,7 +129,7 @@ extern void __cant_migrate(const char *file, int line);
* supposed to.
*/
# define might_sleep() \
do { __might_sleep(__FILE__, __LINE__, 0); might_resched(); } while (0)
do { __might_sleep(__FILE__, __LINE__); might_resched(); } while (0)
/**
* cant_sleep - annotation for functions that cannot sleep
*
@ -170,8 +170,7 @@ extern void __cant_migrate(const char *file, int line);
#else
static inline void __might_resched(const char *file, int line,
int preempt_offset) { }
static inline void __might_sleep(const char *file, int line,
int preempt_offset) { }
static inline void __might_sleep(const char *file, int line) { }
# define might_sleep() do { might_resched(); } while (0)
# define cant_sleep() do { } while (0)
# define cant_migrate() do { } while (0)

4
kernel/sched/core.c
View File

@ -9475,7 +9475,7 @@ static inline int preempt_count_equals(int preempt_offset)
return (nested == preempt_offset);
}
void __might_sleep(const char *file, int line, int preempt_offset)
void __might_sleep(const char *file, int line)
{
unsigned int state = get_current_state();
/*
@ -9489,7 +9489,7 @@ void __might_sleep(const char *file, int line, int preempt_offset)
(void *)current->task_state_change,
(void *)current->task_state_change);
__might_resched(file, line, preempt_offset);
__might_resched(file, line, 0);
}
EXPORT_SYMBOL(__might_sleep);

2
mm/memory.c
View File

@ -5255,7 +5255,7 @@ void __might_fault(const char *file, int line)
return;
if (pagefault_disabled())
return;
__might_sleep(file, line, 0);
__might_sleep(file, line);
#if defined(CONFIG_DEBUG_ATOMIC_SLEEP)
if (current->mm)
might_lock_read(&current->mm->mmap_lock);