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yaml
---
r: 319993
b: refs/heads/master
c: 08dfb4d
h: refs/heads/master
i:
  319991: 4ae7ec3
v: v3
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Akinobu Mita authored and Linus Torvalds committed Jul 31, 2012
1 parent 905a470 commit 34ae4cb
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2 changes: 1 addition & 1 deletion [refs]
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---
refs/heads/master: 9579f5bd31a04e80a87a7b58bd52dff6dc68bc99
refs/heads/master: 08dfb4ddeeeebdee4f3d5a08a87dc9aa68d26f81
17 changes: 17 additions & 0 deletions trunk/lib/Kconfig.debug
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Expand Up @@ -1166,6 +1166,23 @@ config MEMORY_NOTIFIER_ERROR_INJECT

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
bool "Fault-injection framework"
depends on DEBUG_KERNEL
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2 changes: 2 additions & 0 deletions trunk/lib/Makefile
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Expand Up @@ -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-$(CONFIG_PM_NOTIFIER_ERROR_INJECT) += pm-notifier-error-inject.o
obj-$(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

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51 changes: 51 additions & 0 deletions trunk/lib/pSeries-reconfig-notifier-error-inject.c
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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>");

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