timerfd_setup_cancel

Name:timerfd_setup_cancel

Proto:static void timerfd_setup_cancel(struct timerfd_ctx *ctx, int flags)

Type:void

Parameter:

Type	Parameter	Name
struct timerfd_ctx *	ctx
int	flags

144

spin_lock( & cancel_lock)

145

If ( clockid == The IDs of the various system clocks (for POSIX.1b interval timers): || clockid == CLOCK_REALTIME_ALARM ) && flags & CAREFUL: Check include/asm-generic/fcntl.h when defining* new flags, since they might collide with O_* ones. We want* to re-use O_* flags that couldn't possibly have a meaning* from eventfd, in order to leave a free define-space for* shared O_* flags. && flags & TFD_TIMER_CANCEL_ON_SET Then

148

If Not might_cancel Then

149

might_cancel = true

150

spin_lock( & cancel_lock)

151

list_add_rcu - add a new entry to rcu-protected list*@new: new entry to be added*@head: list head to add it after* Insert a new entry after the specified head

152

spin_unlock( & cancel_lock)

154

Else

155

__timerfd_remove_cancel(ctx)

157

spin_unlock( & cancel_lock)

**Caller**
Name	Describe
do_timerfd_settime

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