<sect1 id="routines-local-irqs">
<title><function>local_irq_save()</function>/<function>local_irq_restore()</function>
- <filename class="headerfile">include/asm/system.h</filename>
+ <filename class="headerfile">include/linux/irqflags.h</filename>
</title>
<para>
<returnvalue>-ERESTARTSYS</returnvalue> if a signal is received.
The <function>wait_event()</function> version ignores signals.
</para>
- <para>
- Do not use the <function>sleep_on()</function> function family -
- it is very easy to accidentally introduce races; almost certainly
- one of the <function>wait_event()</function> family will do, or a
- loop around <function>schedule_timeout()</function>. If you choose
- to loop around <function>schedule_timeout()</function> remember
- you must set the task state (with
- <function>set_current_state()</function>) on each iteration to avoid
- busy-looping.
- </para>
</sect1>