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authorAkinobu Mita <akinobu.mita@gmail.com>2010-05-26 14:43:36 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2010-05-27 09:12:48 -0700
commitc9d221f86e43d9fb16260fe18a8cd6767f36c8a5 (patch)
tree87e56764a538eb0fa94bd05e211e1ad89cf5f043 /kernel/cpu.c
parent55af6bb509d3ef2696faddd4a734bf024794b337 (diff)
fault-injection: add CPU notifier error injection module
I used this module to test the series of modification to the cpu notifiers code. Example1: inject CPU offline error (-1 == -EPERM) # modprobe cpu-notifier-error-inject cpu_down_prepare_error=-1 # echo 0 > /sys/devices/system/cpu/cpu1/online bash: echo: write error: Operation not permitted Example2: inject CPU online error (-2 == -ENOENT) # modprobe cpu-notifier-error-inject cpu_up_prepare_error=-2 # echo 1 > /sys/devices/system/cpu/cpu1/online bash: echo: write error: No such file or directory [akpm@linux-foundation.org: fix Kconfig help text] Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'kernel/cpu.c')
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