The patch titled
powerpc: pSeries reconfig notifier error injection
has been added to the -mm tree. Its filename is
powerpc-pseries-reconfig-notifier-error-injection.patch
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------------------------------------------------------
Subject: powerpc: pSeries reconfig notifier error injection
From: Akinobu Mita <akinobu.mita@xxxxxxxxx>
This provides the ability to inject artifical errors to pSeries reconfig
notifier chain callbacks. It is controlled through debugfs interface
under /sys/kernel/debug/pSeries-reconfig-notifier-error-inject/
Each of the files in the 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.
Signed-off-by: Akinobu Mita <akinobu.mita@xxxxxxxxx>
Cc: Pavel Machek <pavel@xxxxxx>
Cc: "Rafael J. Wysocki" <rjw@xxxxxxx>
Cc: Greg KH <greg@xxxxxxxxx>
Cc: Benjamin Herrenschmidt <benh@xxxxxxxxxxxxxxxxxxx>
Cc: Paul Mackerras <paulus@xxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
arch/powerpc/platforms/pseries/reconfig.c | 31 ++++++++++++++++++++
lib/Kconfig.debug | 9 +++++
2 files changed, 40 insertions(+)
diff -puN arch/powerpc/platforms/pseries/reconfig.c~powerpc-pseries-reconfig-notifier-error-injection arch/powerpc/platforms/pseries/reconfig.c
--- a/arch/powerpc/platforms/pseries/reconfig.c~powerpc-pseries-reconfig-notifier-error-injection
+++ a/arch/powerpc/platforms/pseries/reconfig.c
@@ -117,6 +117,37 @@ int pSeries_reconfig_notify(unsigned lon
return notifier_to_errno(err);
}
+#ifdef CONFIG_PSERIES_RECONFIG_NOTIFIER_ERROR_INJECTION
+
+static struct err_inject_notifier_block err_inject_reconfig_nb = {
+ .actions = {
+ { ERR_INJECT_NOTIFIER_ACTION(PSERIES_RECONFIG_ADD) },
+ { ERR_INJECT_NOTIFIER_ACTION(PSERIES_RECONFIG_REMOVE) },
+ { ERR_INJECT_NOTIFIER_ACTION(PSERIES_DRCONF_MEM_ADD) },
+ { ERR_INJECT_NOTIFIER_ACTION(PSERIES_DRCONF_MEM_REMOVE) },
+ {}
+ }
+};
+
+static int __init err_inject_reconfig_notifier_init(void)
+{
+ int err;
+
+ err = err_inject_notifier_block_init(&err_inject_reconfig_nb,
+ "pSeries-reconfig-notifier-error-inject", -1);
+ if (err)
+ return err;
+
+ err = pSeries_reconfig_notifier_register(&err_inject_reconfig_nb.nb);
+ if (err)
+ err_inject_notifier_block_cleanup(&err_inject_reconfig_nb);
+
+ return err;
+}
+late_initcall(err_inject_reconfig_notifier_init);
+
+#endif /* CONFIG_PSERIES_RECONFIG_NOTIFIER_ERROR_INJECTION */
+
static int pSeries_reconfig_add_node(const char *path, struct property *proplist)
{
struct device_node *np;
diff -puN lib/Kconfig.debug~powerpc-pseries-reconfig-notifier-error-injection lib/Kconfig.debug
--- a/lib/Kconfig.debug~powerpc-pseries-reconfig-notifier-error-injection
+++ a/lib/Kconfig.debug
@@ -1084,6 +1084,15 @@ config MEMORY_NOTIFIER_ERROR_INJECTION
# echo offline > /sys/devices/system/memory/memoryXXX/state
bash: echo: write error: Cannot allocate memory
+config PSERIES_RECONFIG_NOTIFIER_ERROR_INJECTION
+ bool "pSeries reconfig notifier error injection"
+ 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/pSeries-reconfig-notifier-error-inject/
+
config CPU_NOTIFIER_ERROR_INJECT
tristate "CPU notifier error injection module"
depends on HOTPLUG_CPU && DEBUG_KERNEL
_
Patches currently in -mm which might be from akinobu.mita@xxxxxxxxx are
origin.patch
linux-next.patch
ext4-use-proper-little-endian-bitops.patch
ocfs2-avoid-unaligned-access-to-dqc_bitmap.patch
reiserfs-use-proper-little-endian-bitops.patch
reiserfs-use-hweight_long.patch
fault-injection-do-not-include-unneeded-header.patch
fault-injection-remove-nonexistent-function-extern.patch
fault-injection-cleanup-simple-attribute-of-stacktrace_depth.patch
fault-injection-use-debugfs_remove_recursive.patch
failslab-simplify-debugfs-initialization.patch
fail_page_alloc-simplify-debugfs-initialization.patch
fail_make_request-cleanup-should_fail_request.patch
fault-injection-notifier-error-injection.patch
cpu-cpu-notifier-error-injection.patch
pm-pm-notifier-error-injection.patch
memory-memory-notifier-error-injection.patch
powerpc-pseries-reconfig-notifier-error-injection.patch
asm-generic-add-another-generic-ext2-atomic-bitops.patch
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