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Documentation: in_irq() cleanup

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Replace the obsolete and ambiguos macro in_irq() with new
macro in_hardirq().

Signed-off-by: Changbin Du <changbin.du@gmail.com>

Link: https://lore.kernel.org/r/20210814014831.53083-1-changbin.du@gmail.com
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
This commit is contained in:
Changbin Du 2021-08-14 09:48:31 +08:00 • committed by Jonathan Corbet
parent f08fe9d293
commit fe450eeb4e
5 changed files with 8 additions and 8 deletions
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4
Documentation/kernel-hacking/hacking.rst
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@ -76,8 +76,8 @@ handler is never re-entered: if the same interrupt arrives, it is queued
fast: frequently it simply acknowledges the interrupt, marks a 'software
interrupt' for execution and exits.
You can tell you are in a hardware interrupt, because
:c:func:`in_irq()` returns true.
You can tell you are in a hardware interrupt, because in_hardirq() returns
true.
.. warning::

4
Documentation/kernel-hacking/locking.rst
View file

@ -1406,7 +1406,7 @@ bh
half will be running at any time.
Hardware Interrupt / Hardware IRQ
Hardware interrupt request. in_irq() returns true in a
Hardware interrupt request. in_hardirq() returns true in a
hardware interrupt handler.
Interrupt Context
@ -1418,7 +1418,7 @@ SMP
(``CONFIG_SMP=y``).
Software Interrupt / softirq
Software interrupt handler. in_irq() returns false;
Software interrupt handler. in_hardirq() returns false;
in_softirq() returns true. Tasklets and softirqs both
fall into the category of 'software interrupts'.