lwn.git/Documentation/fault-injection/notifier-error-inject.txt, branch docs-6.4-2

docs: fault-injection: convert docs to ReST and rename to *.rst

2019-06-14T20:21:07+00:00

The conversion is actually: - add blank lines and identation in order to identify paragraphs; - fix tables markups; - add some lists markups; - mark literal blocks; - adjust title markups. At its new index.rst, let's add a :orphan: while this is not linked to the main index.rst file, in order to avoid build warnings. Signed-off-by: Mauro Carvalho Chehab Acked-by: Federico Vaga Signed-off-by: Jonathan Corbet

cpu/hotplug: Get rid of CPU hotplug notifier leftovers

2017-11-13T09:03:53+00:00

The CPU hotplug notifiers are history. Remove the last reminders. Reported-by: Ingo Molnar Signed-off-by: Thomas Gleixner

net: Add support for CHANGEUPPER notifier error injection

2015-12-03T16:49:23+00:00

Since CHANGEUPPER can now fail, add support for it in the newly introduced netdev notifier error injection infrastructure. Signed-off-by: Ido Schimmel Signed-off-by: Jiri Pirko Acked-by: Nikolay Aleksandrov Signed-off-by: David S. Miller

net: add support for netdev notifier error injection

2015-12-01T20:31:57+00:00

This module allows to insert errors in some of netdevice's notifier events. All network drivers use these notifiers to signal various events and to check if they are allowed, e.g. PRECHANGEMTU and CHANGEMTU afterwards. Until recently I had to run failure tests by injecting a custom module, but now this infrastructure makes it trivial to test these failure paths. Some of the recent bugs I fixed were found using this module. Here's an example: $ cd /sys/kernel/debug/notifier-error-inject/netdev $ echo -22 > actions/NETDEV_CHANGEMTU/error $ ip link set eth0 mtu 1024 RTNETLINK answers: Invalid argument CC: Akinobu Mita CC: "David S. Miller" CC: netdev Signed-off-by: Nikolay Aleksandrov Signed-off-by: David S. Miller

doc: fix quite a few typos within Documentation

2012-11-19T13:28:24+00:00

Correct spelling typo in Documentations Signed-off-by: Jiri Kosina

fault-injection: notifier error injection

2012-07-31T00:25:22+00:00

This patchset provides kernel modules that can be used to test the error handling of notifier call chain failures by injecting artifical errors to the following notifier chain callbacks. * CPU notifier * PM notifier * memory hotplug notifier * powerpc pSeries reconfig notifier Example: Inject CPU offline error (-1 == -EPERM) # cd /sys/kernel/debug/notifier-error-inject/cpu # echo -1 > actions/CPU_DOWN_PREPARE/error # echo 0 > /sys/devices/system/cpu/cpu1/online bash: echo: write error: Operation not permitted The patchset also adds cpu and memory hotplug tests to tools/testing/selftests These tests first do simple online and offline test and then do fault injection tests if notifier error injection module is available. This patch: The notifier error injection provides the ability to inject artifical errors to specified notifier chain callbacks. It is useful to test the error handling of notifier call chain failures. This adds common basic functions to define which type of events can be fail and to initialize the debugfs interface to control what error code should be returned and which event should be failed. Signed-off-by: Akinobu Mita Cc: Pavel Machek Cc: "Rafael J. Wysocki" Cc: Greg KH Cc: Benjamin Herrenschmidt Cc: Paul Mackerras Cc: Michael Ellerman Cc: Dave Jones Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds