linux/include/asm-generic/mcs_spinlock.h
Kumar Kartikeya Dwivedi 8707d1eedc 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>
2025-03-18 10:28:21 -07:00

19 lines
402 B
C

#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:
*
* arch_mcs_spin_lock_contended(l)
* arch_mcs_spin_unlock_contended(l)
*
* See kernel/locking/mcs_spinlock.c.
*/
#endif /* __ASM_MCS_SPINLOCK_H */