From: Akinobu Mita <akinobu.mita@gmail.com> To: linux-kernel@vger.kernel.org, akpm@linux-foundation.org Cc: Akinobu Mita <akinobu.mita@gmail.com>, Benjamin Herrenschmidt <benh@kernel.crashing.org>, Paul Mackerras <paulus@samba.org>, linuxppc-dev@lists.ozlabs.org Subject: [PATCH -v4 5/6] powerpc: pSeries reconfig notifier error injection module Date: Sat, 23 Jun 2012 23:58:21 +0900 [thread overview] Message-ID: <1340463502-15341-6-git-send-email-akinobu.mita@gmail.com> (raw) In-Reply-To: <1340463502-15341-1-git-send-email-akinobu.mita@gmail.com> This 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". Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mackerras <paulus@samba.org> Cc: linuxppc-dev@lists.ozlabs.org --- * v4 - update modules to follow new interface lib/Kconfig.debug | 17 +++++++++ lib/Makefile | 2 + lib/pSeries-reconfig-notifier-error-inject.c | 51 ++++++++++++++++++++++++++ 3 files changed, 70 insertions(+) create mode 100644 lib/pSeries-reconfig-notifier-error-inject.c diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug index 7cceddc..8f8e226 100644 --- a/lib/Kconfig.debug +++ b/lib/Kconfig.debug @@ -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 diff --git a/lib/Makefile b/lib/Makefile index a867aa5..d055cb1 100644 --- a/lib/Makefile +++ b/lib/Makefile @@ -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 diff --git a/lib/pSeries-reconfig-notifier-error-inject.c b/lib/pSeries-reconfig-notifier-error-inject.c new file mode 100644 index 0000000..7f7c98d --- /dev/null +++ b/lib/pSeries-reconfig-notifier-error-inject.c @@ -0,0 +1,51 @@ +#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>"); -- 1.7.10.2
WARNING: multiple messages have this Message-ID (diff)
From: Akinobu Mita <akinobu.mita@gmail.com> To: linux-kernel@vger.kernel.org, akpm@linux-foundation.org Cc: linuxppc-dev@lists.ozlabs.org, Paul Mackerras <paulus@samba.org>, Akinobu Mita <akinobu.mita@gmail.com> Subject: [PATCH -v4 5/6] powerpc: pSeries reconfig notifier error injection module Date: Sat, 23 Jun 2012 23:58:21 +0900 [thread overview] Message-ID: <1340463502-15341-6-git-send-email-akinobu.mita@gmail.com> (raw) In-Reply-To: <1340463502-15341-1-git-send-email-akinobu.mita@gmail.com> This 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". Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mackerras <paulus@samba.org> Cc: linuxppc-dev@lists.ozlabs.org --- * v4 - update modules to follow new interface lib/Kconfig.debug | 17 +++++++++ lib/Makefile | 2 + lib/pSeries-reconfig-notifier-error-inject.c | 51 ++++++++++++++++++++++++++ 3 files changed, 70 insertions(+) create mode 100644 lib/pSeries-reconfig-notifier-error-inject.c diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug index 7cceddc..8f8e226 100644 --- a/lib/Kconfig.debug +++ b/lib/Kconfig.debug @@ -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 diff --git a/lib/Makefile b/lib/Makefile index a867aa5..d055cb1 100644 --- a/lib/Makefile +++ b/lib/Makefile @@ -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 diff --git a/lib/pSeries-reconfig-notifier-error-inject.c b/lib/pSeries-reconfig-notifier-error-inject.c new file mode 100644 index 0000000..7f7c98d --- /dev/null +++ b/lib/pSeries-reconfig-notifier-error-inject.c @@ -0,0 +1,51 @@ +#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>"); -- 1.7.10.2
next prev parent reply other threads:[~2012-06-23 14:59 UTC|newest] Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top 2012-06-23 14:58 [PATCH -v4 0/6] notifier error injection Akinobu Mita 2012-06-23 14:58 ` Akinobu Mita 2012-06-23 14:58 ` Akinobu Mita 2012-06-23 14:58 ` Akinobu Mita 2012-06-23 14:58 ` [PATCH -v4 1/6] fault-injection: " Akinobu Mita 2012-06-23 14:58 ` Akinobu Mita 2012-06-23 14:58 ` Akinobu Mita 2012-06-23 14:58 ` [PATCH -v4 2/6] cpu: rewrite cpu-notifier-error-inject module Akinobu Mita 2012-06-23 14:58 ` [PATCH -v4 3/6] PM: PM notifier error injection module Akinobu Mita 2012-06-23 14:58 ` Akinobu Mita 2012-06-28 21:45 ` Rafael J. Wysocki 2012-06-28 21:45 ` Rafael J. Wysocki 2012-06-23 14:58 ` [PATCH -v4 4/6] memory: memory " Akinobu Mita 2012-06-23 14:58 ` Akinobu Mita 2012-06-23 14:58 ` Akinobu Mita [this message] 2012-06-23 14:58 ` [PATCH -v4 5/6] powerpc: pSeries reconfig " Akinobu Mita 2012-06-23 14:58 ` [PATCH -v4 6/6] fault-injection: add notifier error injection testing scripts Akinobu Mita 2012-06-23 14:58 ` Akinobu Mita 2012-06-23 14:58 ` Akinobu Mita 2012-06-23 14:58 ` Akinobu Mita 2012-06-26 23:31 ` Andrew Morton 2012-06-26 23:31 ` Andrew Morton 2012-06-26 23:31 ` Andrew Morton 2012-06-26 23:31 ` Andrew Morton 2012-06-26 23:58 ` [linux-pm] " Dave Jones 2012-06-26 23:58 ` Dave Jones 2012-06-26 23:58 ` Dave Jones 2012-06-27 11:42 ` Akinobu Mita 2012-06-27 11:42 ` Akinobu Mita 2012-06-27 11:42 ` Akinobu Mita 2012-06-27 11:42 ` Akinobu Mita
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