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| author | Thomas Gleixner <tglx@linutronix.de> | 2016-12-21 20:19:53 +0100 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2016-12-25 10:47:43 +0100 |
| commit | 530e9b76ae8f863dfdef4a6ad0b38613d32e8c3f (patch) | |
| tree | 3f8da3a319b88466effa991910c568d038ecfa4b /lib/Kconfig.debug | |
| parent | 7b737965b33188bd3dbb44e938535c4006d97fbb (diff) | |
| download | linux-530e9b76ae8f863dfdef4a6ad0b38613d32e8c3f.tar.gz linux-530e9b76ae8f863dfdef4a6ad0b38613d32e8c3f.tar.xz | |
cpu/hotplug: Remove obsolete cpu hotplug register/unregister functions
hotcpu_notifier(), cpu_notifier(), __hotcpu_notifier(), __cpu_notifier(),
register_hotcpu_notifier(), register_cpu_notifier(),
__register_hotcpu_notifier(), __register_cpu_notifier(),
unregister_hotcpu_notifier(), unregister_cpu_notifier(),
__unregister_hotcpu_notifier(), __unregister_cpu_notifier()
are unused now. Remove them and all related code.
Remove also the now pointless cpu notifier error injection mechanism. The
states can be executed step by step and error rollback is the same as cpu
down, so any state transition can be tested w/o requiring the notifier
error injection.
Some CPU hotplug states are kept as they are (ab)used for hotplug state
tracking.
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: rt@linutronix.de
Link: http://lkml.kernel.org/r/20161221192112.005642358@linutronix.de
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'lib/Kconfig.debug')
| -rw-r--r-- | lib/Kconfig.debug | 24 |
1 files changed, 0 insertions, 24 deletions
diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug index cb66a4648840..b06848a104e6 100644 --- a/lib/Kconfig.debug +++ b/lib/Kconfig.debug @@ -1538,30 +1538,6 @@ config NOTIFIER_ERROR_INJECTION Say N if unsure. -config CPU_NOTIFIER_ERROR_INJECT - tristate "CPU notifier error injection module" - depends on HOTPLUG_CPU && NOTIFIER_ERROR_INJECTION - help - This option provides a kernel module that can be used to test - the error handling of the cpu notifiers by injecting artificial - errors to CPU notifier chain callbacks. It is controlled through - debugfs interface under /sys/kernel/debug/notifier-error-inject/cpu - - If the notifier call chain should be failed with some events - notified, write the error code to "actions/<notifier event>/error". - - 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 - - To compile this code as a module, choose M here: the module will - be called cpu-notifier-error-inject. - - If unsure, say N. - config PM_NOTIFIER_ERROR_INJECT tristate "PM notifier error injection module" depends on PM && NOTIFIER_ERROR_INJECTION |