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authorAkinobu Mita <akinobu.mita@gmail.com>2012-07-30 14:43:10 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2012-07-30 17:25:22 -0700
commit9579f5bd31a04e80a87a7b58bd52dff6dc68bc99 (patch)
treea574a53f7829f157ef9ce2b696cc66ffe92bcef9 /lib/pSeries-reconfig-notifier-error-inject.c
parent048b9c3549790af21eabd06a5ebdad305e75b1c5 (diff)
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memory: memory notifier error injection module
This provides the ability to inject artifical errors to memory hotplug notifier chain callbacks. It is controlled through debugfs interface under /sys/kernel/debug/notifier-error-inject/memory If the notifier call chain should be failed with some events notified, write the error code to "actions/<notifier event>/error". Example: Inject memory hotplug offline error (-12 == -ENOMEM) # cd /sys/kernel/debug/notifier-error-inject/memory # echo -12 > actions/MEM_GOING_OFFLINE/error # echo offline > /sys/devices/system/memory/memoryXXX/state bash: echo: write error: Cannot allocate memory Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Cc: Pavel Machek <pavel@ucw.cz> Cc: "Rafael J. Wysocki" <rjw@sisk.pl> Cc: Greg KH <greg@kroah.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Michael Ellerman <michael@ellerman.id.au> Cc: Dave Jones <davej@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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