diff options
| -rw-r--r-- | include/asm-generic/rqspinlock.h | 19 | ||||
| -rw-r--r-- | kernel/bpf/rqspinlock.c | 3 |
2 files changed, 21 insertions, 1 deletions
diff --git a/include/asm-generic/rqspinlock.h b/include/asm-generic/rqspinlock.h new file mode 100644 index 000000000000..22f8094d0550 --- /dev/null +++ b/include/asm-generic/rqspinlock.h @@ -0,0 +1,19 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ +/* + * Resilient Queued Spin Lock + * + * (C) Copyright 2024-2025 Meta Platforms, Inc. and affiliates. + * + * Authors: Kumar Kartikeya Dwivedi <memxor@gmail.com> + */ +#ifndef __ASM_GENERIC_RQSPINLOCK_H +#define __ASM_GENERIC_RQSPINLOCK_H + +#include <linux/types.h> + +struct qspinlock; +typedef struct qspinlock rqspinlock_t; + +extern void resilient_queued_spin_lock_slowpath(rqspinlock_t *lock, u32 val); + +#endif /* __ASM_GENERIC_RQSPINLOCK_H */ diff --git a/kernel/bpf/rqspinlock.c b/kernel/bpf/rqspinlock.c index 762108cb0f38..93e31633c2aa 100644 --- a/kernel/bpf/rqspinlock.c +++ b/kernel/bpf/rqspinlock.c @@ -23,6 +23,7 @@ #include <asm/byteorder.h> #include <asm/qspinlock.h> #include <trace/events/lock.h> +#include <asm/rqspinlock.h> /* * Include queued spinlock definitions and statistics code @@ -127,7 +128,7 @@ static __always_inline u32 __pv_wait_head_or_lock(struct qspinlock *lock, * contended : (*,x,y) +--> (*,0,0) ---> (*,0,1) -' : * queue : ^--' : */ -void __lockfunc resilient_queued_spin_lock_slowpath(struct qspinlock *lock, u32 val) +void __lockfunc resilient_queued_spin_lock_slowpath(rqspinlock_t *lock, u32 val) { struct mcs_spinlock *prev, *next, *node; u32 old, tail; |