The patch titled Subject: PM: PM notifier error injection module has been removed from the -mm tree. Its filename was pm-pm-notifier-error-injection-module.patch This patch was dropped because it was merged into mainline or a subsystem tree ------------------------------------------------------ From: Akinobu Mita <akinobu.mita@xxxxxxxxx> Subject: PM: PM notifier error injection module This provides the ability to inject artifical errors to PM notifier chain callbacks. It is controlled through debugfs interface under /sys/kernel/debug/notifier-error-inject/pm Each of the files in "error" directory represents an event which can be failed and contains the error code. If the notifier call chain should be failed with some events notified, write the error code to the files. If the notifier call chain should be failed with some events notified, write the error code to "actions/<notifier event>/error". Example: Inject PM suspend error (-12 = -ENOMEM) # cd /sys/kernel/debug/notifier-error-inject/pm # echo -12 > actions/PM_SUSPEND_PREPARE/error # echo mem > /sys/power/state bash: echo: write error: Cannot allocate memory Signed-off-by: Akinobu Mita <akinobu.mita@xxxxxxxxx> Acked-by: "Rafael J. Wysocki" <rjw@xxxxxxx> Cc: Pavel Machek <pavel@xxxxxx> Cc: Greg KH <greg@xxxxxxxxx> Cc: Benjamin Herrenschmidt <benh@xxxxxxxxxxxxxxxxxxx> Cc: Paul Mackerras <paulus@xxxxxxxxx> Cc: Michael Ellerman <michael@xxxxxxxxxxxxxx> Cc: Dave Jones <davej@xxxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- lib/Kconfig.debug | 24 +++++++++++++++ lib/Makefile | 1 lib/pm-notifier-error-inject.c | 49 +++++++++++++++++++++++++++++++ 3 files changed, 74 insertions(+) diff -puN lib/Kconfig.debug~pm-pm-notifier-error-injection-module lib/Kconfig.debug --- a/lib/Kconfig.debug~pm-pm-notifier-error-injection-module +++ a/lib/Kconfig.debug @@ -1119,6 +1119,30 @@ config 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 + default m if PM_DEBUG + help + This option provides the ability to inject artifical errors to + PM notifier chain callbacks. It is controlled through debugfs + interface /sys/kernel/debug/notifier-error-inject/pm + + If the notifier call chain should be failed with some events + notified, write the error code to "actions/<notifier event>/error". + + Example: Inject PM suspend error (-12 = -ENOMEM) + + # cd /sys/kernel/debug/notifier-error-inject/pm/ + # echo -12 > actions/PM_SUSPEND_PREPARE/error + # echo mem > /sys/power/state + bash: echo: write error: Cannot allocate memory + + To compile this code as a module, choose M here: the module will + be called pm-notifier-error-inject. + + If unsure, say N. + config FAULT_INJECTION bool "Fault-injection framework" depends on DEBUG_KERNEL diff -puN lib/Makefile~pm-pm-notifier-error-injection-module lib/Makefile --- a/lib/Makefile~pm-pm-notifier-error-injection-module +++ a/lib/Makefile @@ -92,6 +92,7 @@ obj-$(CONFIG_IOMMU_HELPER) += iommu-help obj-$(CONFIG_FAULT_INJECTION) += fault-inject.o obj-$(CONFIG_NOTIFIER_ERROR_INJECTION) += notifier-error-inject.o obj-$(CONFIG_CPU_NOTIFIER_ERROR_INJECT) += cpu-notifier-error-inject.o +obj-$(CONFIG_PM_NOTIFIER_ERROR_INJECT) += pm-notifier-error-inject.o lib-$(CONFIG_GENERIC_BUG) += bug.o diff -puN /dev/null lib/pm-notifier-error-inject.c --- /dev/null +++ a/lib/pm-notifier-error-inject.c @@ -0,0 +1,49 @@ +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/suspend.h> + +#include "notifier-error-inject.h" + +static int priority; +module_param(priority, int, 0); +MODULE_PARM_DESC(priority, "specify PM notifier priority"); + +static struct notifier_err_inject pm_notifier_err_inject = { + .actions = { + { NOTIFIER_ERR_INJECT_ACTION(PM_HIBERNATION_PREPARE) }, + { NOTIFIER_ERR_INJECT_ACTION(PM_SUSPEND_PREPARE) }, + { NOTIFIER_ERR_INJECT_ACTION(PM_RESTORE_PREPARE) }, + {} + } +}; + +static struct dentry *dir; + +static int err_inject_init(void) +{ + int err; + + dir = notifier_err_inject_init("pm", notifier_err_inject_dir, + &pm_notifier_err_inject, priority); + if (IS_ERR(dir)) + return PTR_ERR(dir); + + err = register_pm_notifier(&pm_notifier_err_inject.nb); + if (err) + debugfs_remove_recursive(dir); + + return err; +} + +static void err_inject_exit(void) +{ + unregister_pm_notifier(&pm_notifier_err_inject.nb); + debugfs_remove_recursive(dir); +} + +module_init(err_inject_init); +module_exit(err_inject_exit); + +MODULE_DESCRIPTION("PM notifier error injection module"); +MODULE_LICENSE("GPL"); +MODULE_AUTHOR("Akinobu Mita <akinobu.mita@xxxxxxxxx>"); _ Patches currently in -mm which might be from akinobu.mita@xxxxxxxxx are origin.patch fault-injection-fix-failcmdsh-warning.patch linux-next.patch ocfs2-use-find_last_bit.patch ocfs2-use-bitmap_weight.patch -- To unsubscribe from this list: send the line "unsubscribe mm-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html