__ww_mutex

Name: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.

Proto:static bool __ww_mutex_wound(struct mutex *lock, struct ww_acquire_ctx *ww_ctx, struct ww_acquire_ctx *hold_ctx)

Type:bool

Parameter:

Type	Parameter	Name
struct mutex *	lock
struct ww_acquire_ctx *	ww_ctx
struct ww_acquire_ctx *	hold_ctx

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owner = Internal helper function; C doesn't allow us to hide it :/* DO NOT USE (outside of mutex code).

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lockdep_assert_held( & wait_lock)

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If Not hold_ctx Then Return false

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If Not owner Then Return false

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If acquired > 0 && 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. Then

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wounded = 1

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If owner != current process Then wake_up_process - Wake up a specific process*@p: The process to be woken up.* Attempt to wake up the nominated process and move it to the set of runnable* processes.* Return: 1 if the process was woken up, 0 if it was already running.

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Return true

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Return false

**Caller**
Name	Describe
__ww_mutex_check_waiters	We just acquired @lock under @ww_ctx, if there are later contexts waiting* behind us on the wait-list, check if they need to die, or wound us.* See __ww_mutex_add_waiter() for the list-order construction; basically the
__ww_mutex_add_waiter	Add @waiter to the wait-list, keep the wait-list ordered by stamp, smallest* first

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