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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: Barret Rhoden <brho@google.com>
Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>
Link: https://lore.kernel.org/r/20250316040541.108729-2-memxor@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
pull/1190/head
Kumar Kartikeya Dwivedi 2025-03-15 21:05:17 -07:00 committed by Alexei Starovoitov
parent ae0a457f5d
commit 8707d1eedc
2 changed files with 6 additions and 6 deletions
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6
include/asm-generic/mcs_spinlock.h
View File

@ -1,6 +1,12 @@
#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:
*

6
kernel/locking/mcs_spinlock.h
View File

@ -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