Merge branch 'akpm' (Andrew's patch-bomb)

Merge Andrew's first set of patches:
 "Non-MM patches:

   - lots of misc bits

   - tree-wide have_clk() cleanups

   - quite a lot of printk tweaks.  I draw your attention to "printk:
     convert the format for KERN_<LEVEL> to a 2 byte pattern" which
     looks a bit scary.  But afaict it's solid.

   - backlight updates

   - lib/ feature work (notably the addition and use of memweight())

   - checkpatch updates

   - rtc updates

   - nilfs updates

   - fatfs updates (partial, still waiting for acks)

   - kdump, proc, fork, IPC, sysctl, taskstats, pps, etc

   - new fault-injection feature work"

* Merge emailed patches from Andrew Morton <akpm@linux-foundation.org>: (128 commits)
  drivers/misc/lkdtm.c: fix missing allocation failure check
  lib/scatterlist: do not re-write gfp_flags in __sg_alloc_table()
  fault-injection: add tool to run command with failslab or fail_page_alloc
  fault-injection: add selftests for cpu and memory hotplug
  powerpc: pSeries reconfig notifier error injection module
  memory: memory notifier error injection module
  PM: PM notifier error injection module
  cpu: rewrite cpu-notifier-error-inject module
  fault-injection: notifier error injection
  c/r: fcntl: add F_GETOWNER_UIDS option
  resource: make sure requested range is included in the root range
  include/linux/aio.h: cpp->C conversions
  fs: cachefiles: add support for large files in filesystem caching
  pps: return PTR_ERR on error in device_create
  taskstats: check nla_reserve() return
  sysctl: suppress kmemleak messages
  ipc: use Kconfig options for __ARCH_WANT_[COMPAT_]IPC_PARSE_VERSION
  ipc: compat: use signed size_t types for msgsnd and msgrcv
  ipc: allow compat IPC version field parsing if !ARCH_WANT_OLD_COMPAT_IPC
  ipc: add COMPAT_SHMLBA support
  ...

1 files changed, 25 insertions, 38 deletions

diff --git a/lib/cpu-notifier-error-inject.c b/lib/cpu-notifier-error-inject.c
index 4dc20321b0d5..707ca24f7b18 100644
--- a/lib/cpu-notifier-error-inject.c
+++ b/lib/cpu-notifier-error-inject.c
@@ -1,58 +1,45 @@
 #include <linux/kernel.h>
-#include <linux/cpu.h>
 #include <linux/module.h>
-#include <linux/notifier.h>
+#include <linux/cpu.h>
 
-static int priority;
-static int cpu_up_prepare_error;
-static int cpu_down_prepare_error;
+#include "notifier-error-inject.h"
 
+static int priority;
 module_param(priority, int, 0);
 MODULE_PARM_DESC(priority, "specify cpu notifier priority");
 
-module_param(cpu_up_prepare_error, int, 0644);
-MODULE_PARM_DESC(cpu_up_prepare_error,
-                "specify error code to inject CPU_UP_PREPARE action");
-
-module_param(cpu_down_prepare_error, int, 0644);
-MODULE_PARM_DESC(cpu_down_prepare_error,
-                "specify error code to inject CPU_DOWN_PREPARE action");
-
-static int err_inject_cpu_callback(struct notifier_block *nfb,
-                                unsigned long action, void *hcpu)
-{
-        int err = 0;
-
-        switch (action) {
-        case CPU_UP_PREPARE:
-        case CPU_UP_PREPARE_FROZEN:
-                err = cpu_up_prepare_error;
-                break;
-        case CPU_DOWN_PREPARE:
-        case CPU_DOWN_PREPARE_FROZEN:
-                err = cpu_down_prepare_error;
-                break;
+static struct notifier_err_inject cpu_notifier_err_inject = {
+        .actions = {
+                { NOTIFIER_ERR_INJECT_ACTION(CPU_UP_PREPARE) },
+                { NOTIFIER_ERR_INJECT_ACTION(CPU_UP_PREPARE_FROZEN) },
+                { NOTIFIER_ERR_INJECT_ACTION(CPU_DOWN_PREPARE) },
+                { NOTIFIER_ERR_INJECT_ACTION(CPU_DOWN_PREPARE_FROZEN) },
+                {}
         }
-        if (err)
-                printk(KERN_INFO "Injecting error (%d) at cpu notifier\n", err);
-
-        return notifier_from_errno(err);
-}
-
-static struct notifier_block err_inject_cpu_notifier = {
-        .notifier_call = err_inject_cpu_callback,
 };
 
+static struct dentry *dir;
+
 static int err_inject_init(void)
 {
-        err_inject_cpu_notifier.priority = priority;
+        int err;
+
+        dir = notifier_err_inject_init("cpu", notifier_err_inject_dir,
+                                        &cpu_notifier_err_inject, priority);
+        if (IS_ERR(dir))
+                return PTR_ERR(dir);
+
+        err = register_hotcpu_notifier(&cpu_notifier_err_inject.nb);
+        if (err)
+                debugfs_remove_recursive(dir);
 
-        return register_hotcpu_notifier(&err_inject_cpu_notifier);
+        return err;
 }
 
 static void err_inject_exit(void)
 {
-        unregister_hotcpu_notifier(&err_inject_cpu_notifier);
+        unregister_hotcpu_notifier(&cpu_notifier_err_inject.nb);
+        debugfs_remove_recursive(dir);
 }
 
 module_init(err_inject_init);