PREEMPT_NOTIFIER_UNR(9) Driver Basics PREEMPT_NOTIFIER_UNR(9)NAME
preempt_notifier_unregister - no longer interested in preemption notifications
void preempt_notifier_unregister(struct preempt_notifier * notifier);
notifier struct to unregister
This is safe to call from within a preemption notifier.
COPYRIGHT Kernel Hackers Manual 3.10 June 2014 PREEMPT_NOTIFIER_UNR(9)
Check Out this Related Man Page
KPREEMPT(9) BSD Kernel Developer's Manual KPREEMPT(9)NAME
kpreempt -- control kernel preemption
These functions are used to control kernel preemption of the calling LWP.
On architectures where kernel preemption is not supported natively, these functions may still be used.
It should be noted that kernel preemption is also disabled when holding the interrupt priority level above IPL_NONE, e.g. using spl(9) or
spinning mutex(9) calls or holding kernel_lock (indicating that the code is not MT safe).
kpreempt_disable() disables kernel preemption of the calling LWP. Note that disabling kernel preemption can prevent LWPs with higher priori-
ties from running.
kpreempt_enable() enables kernel preemption of the calling LWP, which was previously disabled by kpreempt_disable().
kpreempt_disable() and kpreempt_enable() can be nested.
kpreempt_disabled() returns true if preemption of the calling LWP is disabled. It is only for diagnostic purpose.
SEE ALSO intro(9), mutex(9), spl(9)BSD February 16, 2010 BSD
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