Commit 4fc9225d authored by Thomas Gleixner's avatar Thomas Gleixner Committed by Ingo Molnar
Browse files

sched: Move MM CID related functions to sched.h 



There is nothing mm specific in that and including mm.h can cause header
recursion hell.

Signed-off-by: default avatarThomas Gleixner <tglx@linutronix.de>
Signed-off-by: default avatarPeter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: default avatarIngo Molnar <mingo@kernel.org>
Reviewed-by: default avatarMathieu Desnoyers <mathieu.desnoyers@efficios.com>
Link: https://patch.msgid.link/20251027084306.778457951@linutronix.de
parent 7702a9c2

include/linux/mm.h

+0 −25
Original line number Diff line number Diff line
@@ -2401,31 +2401,6 @@ struct zap_details { 
/* Set in unmap_vmas() to indicate a final unmap call.  Only used by hugetlb */

#define  ZAP_FLAG_UNMAP              ((__force zap_flags_t) BIT(1))



#ifdef CONFIG_SCHED_MM_CID

void sched_mm_cid_before_execve(struct task_struct *t);

void sched_mm_cid_after_execve(struct task_struct *t);

void sched_mm_cid_fork(struct task_struct *t);

void sched_mm_cid_exit_signals(struct task_struct *t);

static inline int task_mm_cid(struct task_struct *t)

{

	return t->mm_cid;

}

#else

static inline void sched_mm_cid_before_execve(struct task_struct *t) { }

static inline void sched_mm_cid_after_execve(struct task_struct *t) { }

static inline void sched_mm_cid_fork(struct task_struct *t) { }

static inline void sched_mm_cid_exit_signals(struct task_struct *t) { }

static inline int task_mm_cid(struct task_struct *t)

{

	/*

	 * Use the processor id as a fall-back when the mm cid feature is

	 * disabled. This provides functional per-cpu data structure accesses

	 * in user-space, althrough it won't provide the memory usage benefits.

	 */

	return raw_smp_processor_id();

}

#endif



#ifdef CONFIG_MMU

extern bool can_do_mlock(void);

#else

include/linux/sched.h

+26 −0
Original line number Diff line number Diff line
@@ -2310,6 +2310,32 @@ static __always_inline void alloc_tag_restore(struct alloc_tag *tag, struct allo 
#define alloc_tag_restore(_tag, _old)		do {} while (0)

#endif



/* Avoids recursive inclusion hell */

#ifdef CONFIG_SCHED_MM_CID

void sched_mm_cid_before_execve(struct task_struct *t);

void sched_mm_cid_after_execve(struct task_struct *t);

void sched_mm_cid_fork(struct task_struct *t);

void sched_mm_cid_exit_signals(struct task_struct *t);

static inline int task_mm_cid(struct task_struct *t)

{

	return t->mm_cid;

}

#else

static inline void sched_mm_cid_before_execve(struct task_struct *t) { }

static inline void sched_mm_cid_after_execve(struct task_struct *t) { }

static inline void sched_mm_cid_fork(struct task_struct *t) { }

static inline void sched_mm_cid_exit_signals(struct task_struct *t) { }

static inline int task_mm_cid(struct task_struct *t)

{

	/*

	 * Use the processor id as a fall-back when the mm cid feature is

	 * disabled. This provides functional per-cpu data structure accesses

	 * in user-space, althrough it won't provide the memory usage benefits.

	 */

	return task_cpu(t);

}

#endif



#ifndef MODULE

#ifndef COMPILE_OFFSETS