__ww_ctx_stamp

函数名称：Determine if context @a is 'after' context @b. IOW, @a is a younger* transaction than @b and depending on algorithm either needs to wait for*@b or die.

函数原型：static inline bool __sched __ww_ctx_stamp_after(struct ww_acquire_ctx *a, struct ww_acquire_ctx *b)

返回类型：bool

参数：

类型	参数	名称
struct ww_acquire_ctx *	a
struct ww_acquire_ctx *	b

**调用者**
名称	描述
__ww_mutex_die	Wait-Die; wake a younger waiter context (when locks held) such that it can* die.* Among waiters with context, only the first one can have other locks acquired* already (ctx->acquired > 0), because __ww_mutex_add_waiter() and
__ww_mutex_wound	Wound-Wait; wound a younger @hold_ctx if it holds the lock.* Wound the lock holder if there are waiters with older transactions than* the lock holders. Even if multiple waiters may wound the lock holder,* it's sufficient that only one does.
__ww_mutex_check_kill	Check the wound condition for the current lock acquire
__ww_mutex_add_waiter	Add @waiter to the wait-list, keep the wait-list ordered by stamp, smallest* first

函数逻辑报告