powerpc: pSeries reconfig notifier error injection module (08dfb4dd) · Commits · 戴 / test

lib/Kconfig.debug

+17 −0

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	@@ -1166,6 +1166,23 @@ config MEMORY_NOTIFIER_ERROR_INJECT

	If unsure, say N.		If unsure, say N.

			config PSERIES_RECONFIG_NOTIFIER_ERROR_INJECT
			tristate "pSeries reconfig notifier error injection module"
			depends on PPC_PSERIES && NOTIFIER_ERROR_INJECTION
			help
			This option provides the ability to inject artifical errors to
			pSeries reconfig notifier chain callbacks. It is controlled
			through debugfs interface under
			/sys/kernel/debug/notifier-error-inject/pSeries-reconfig/

			If the notifier call chain should be failed with some events
			notified, write the error code to "actions/<notifier event>/error".

			To compile this code as a module, choose M here: the module will
			be called memory-notifier-error-inject.

			If unsure, say N.

	config FAULT_INJECTION		config FAULT_INJECTION
	bool "Fault-injection framework"		bool "Fault-injection framework"
	depends on DEBUG_KERNEL		depends on DEBUG_KERNEL

+2 −0

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	@@ -94,6 +94,8 @@ obj-$(CONFIG_NOTIFIER_ERROR_INJECTION) += notifier-error-inject.o
	obj-$(CONFIG_CPU_NOTIFIER_ERROR_INJECT) += cpu-notifier-error-inject.o		obj-$(CONFIG_CPU_NOTIFIER_ERROR_INJECT) += cpu-notifier-error-inject.o
	obj-$(CONFIG_PM_NOTIFIER_ERROR_INJECT) += pm-notifier-error-inject.o		obj-$(CONFIG_PM_NOTIFIER_ERROR_INJECT) += pm-notifier-error-inject.o
	obj-$(CONFIG_MEMORY_NOTIFIER_ERROR_INJECT) += memory-notifier-error-inject.o		obj-$(CONFIG_MEMORY_NOTIFIER_ERROR_INJECT) += memory-notifier-error-inject.o
			obj-$(CONFIG_PSERIES_RECONFIG_NOTIFIER_ERROR_INJECT) += \
			pSeries-reconfig-notifier-error-inject.o

	lib-$(CONFIG_GENERIC_BUG) += bug.o		lib-$(CONFIG_GENERIC_BUG) += bug.o

0 → 100644

+51 −0

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			#include <linux/kernel.h>
			#include <linux/module.h>

			#include <asm/pSeries_reconfig.h>

			#include "notifier-error-inject.h"

			static int priority;
			module_param(priority, int, 0);
			MODULE_PARM_DESC(priority, "specify pSeries reconfig notifier priority");

			static struct notifier_err_inject reconfig_err_inject = {
			.actions = {
			{ NOTIFIER_ERR_INJECT_ACTION(PSERIES_RECONFIG_ADD) },
			{ NOTIFIER_ERR_INJECT_ACTION(PSERIES_RECONFIG_REMOVE) },
			{ NOTIFIER_ERR_INJECT_ACTION(PSERIES_DRCONF_MEM_ADD) },
			{ NOTIFIER_ERR_INJECT_ACTION(PSERIES_DRCONF_MEM_REMOVE) },
			{}
			}
			};

			static struct dentry *dir;

			static int err_inject_init(void)
			{
			int err;

			dir = notifier_err_inject_init("pSeries-reconfig",
			notifier_err_inject_dir, &reconfig_err_inject, priority);
			if (IS_ERR(dir))
			return PTR_ERR(dir);

			err = pSeries_reconfig_notifier_register(&reconfig_err_inject.nb);
			if (err)
			debugfs_remove_recursive(dir);

			return err;
			}

			static void err_inject_exit(void)
			{
			pSeries_reconfig_notifier_unregister(&reconfig_err_inject.nb);
			debugfs_remove_recursive(dir);
			}

			module_init(err_inject_init);
			module_exit(err_inject_exit);

			MODULE_DESCRIPTION("pSeries reconfig notifier error injection module");
			MODULE_LICENSE("GPL");
			MODULE_AUTHOR("Akinobu Mita <akinobu.mita@gmail.com>");