From: Thomas Gleixner <tglx@linutronix.de>
Subject: sched: Remove preempt_offset argument from __might_sleep()
Date: Thu, 23 Sep 2021 18:54:38 +0200

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

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Link: https://lore.kernel.org/r/20210923165358.054321586@linutronix.de
---
 include/linux/kernel.h |    7 +++----
 kernel/sched/core.c    |    4 ++--
 mm/memory.c            |    2 +-
 3 files changed, 6 insertions(+), 7 deletions(-)

@ include/linux/kernel.h:115 @ static __always_inline void might_resche
 
 #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);
 
@ include/linux/kernel.h:132 @ extern void __cant_migrate(const char *f
  * 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
  *
@ include/linux/kernel.h:173 @ extern void __cant_migrate(const char *f
 #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)
--- a/kernel/sched/core.c
+++ b/kernel/sched/core.c
@ include/linux/kernel.h:9478 @ static inline int preempt_count_equals(i
 	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();
 	/*
@ include/linux/kernel.h:9492 @ void __might_sleep(const char *file, int
 			(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);
 
--- a/mm/memory.c
+++ b/mm/memory.c
@ include/linux/kernel.h:5259 @ void __might_fault(const char *file, int
 		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);