Commit 8707d1ee authored by Kumar Kartikeya Dwivedi's avatar Kumar Kartikeya Dwivedi Committed by Alexei Starovoitov
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locking: Move MCS struct definition to public header 



Move the definition of the struct mcs_spinlock from the private
mcs_spinlock.h header in kernel/locking to the mcs_spinlock.h
asm-generic header, since we will need to reference it from the
qspinlock.h header in subsequent commits.

Reviewed-by: default avatarBarret Rhoden <brho@google.com>
Signed-off-by: default avatarKumar Kartikeya Dwivedi <memxor@gmail.com>
Link: https://lore.kernel.org/r/20250316040541.108729-2-memxor@gmail.com


Signed-off-by: default avatarAlexei Starovoitov <ast@kernel.org>
parent ae0a457f

include/asm-generic/mcs_spinlock.h

+6 −0
Original line number Diff line number Diff line 
#ifndef __ASM_MCS_SPINLOCK_H

#define __ASM_MCS_SPINLOCK_H



struct mcs_spinlock {

	struct mcs_spinlock *next;

	int locked; /* 1 if lock acquired */

	int count;  /* nesting count, see qspinlock.c */

};



/*

 * Architectures can define their own:

 *

kernel/locking/mcs_spinlock.h

+0 −6
Original line number Diff line number Diff line
@@ -15,12 +15,6 @@ 


#include <asm/mcs_spinlock.h>



struct mcs_spinlock {

	struct mcs_spinlock *next;

	int locked; /* 1 if lock acquired */

	int count;  /* nesting count, see qspinlock.c */

};



#ifndef arch_mcs_spin_lock_contended

/*

 * Using smp_cond_load_acquire() provides the acquire semantics