The patch titled
Fix extend notifier_call_chain to count nr_calls made
has been added to the -mm tree. Its filename is
extend-notifier_call_chain-to-count-nr_calls-made-fixes.patch
See http://www.zip.com.au/~akpm/linux/patches/stuff/added-to-mm.txt to find
out what to do about this
------------------------------------------------------
Subject: Fix extend notifier_call_chain to count nr_calls made
From: Gautham R Shenoy <ego@xxxxxxxxxx>
* Corrects the type of nr_calls to int * from unsigned int * in
notifier_call_chain and it's subsequent callers.
* Converts comments of notifier_call_chain to be compliant with
kernel-docs standards.
* Reverts the changes made to the comments of other
*_notifier_call_chain.
* Adds parameter names to a few functions prototypes in
include/linux/notifier.h .
Cc: Randy Dunlap <randy.dunlap@xxxxxxxxxx>
Signed-off-by: Gautham R Shenoy <ego@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxx>
---
include/linux/notifier.h | 58 ++++++++++++++++++-------------------
kernel/sys.c | 24 ++++++---------
2 files changed, 39 insertions(+), 43 deletions(-)
diff -puN include/linux/notifier.h~extend-notifier_call_chain-to-count-nr_calls-made-fixes include/linux/notifier.h
--- a/include/linux/notifier.h~extend-notifier_call_chain-to-count-nr_calls-made-fixes
+++ a/include/linux/notifier.h
@@ -112,40 +112,40 @@ extern void srcu_init_notifier_head(stru
#ifdef __KERNEL__
-extern int atomic_notifier_chain_register(struct atomic_notifier_head *,
- struct notifier_block *);
-extern int blocking_notifier_chain_register(struct blocking_notifier_head *,
- struct notifier_block *);
-extern int raw_notifier_chain_register(struct raw_notifier_head *,
- struct notifier_block *);
-extern int srcu_notifier_chain_register(struct srcu_notifier_head *,
- struct notifier_block *);
-
-extern int atomic_notifier_chain_unregister(struct atomic_notifier_head *,
- struct notifier_block *);
-extern int blocking_notifier_chain_unregister(struct blocking_notifier_head *,
- struct notifier_block *);
-extern int raw_notifier_chain_unregister(struct raw_notifier_head *,
- struct notifier_block *);
-extern int srcu_notifier_chain_unregister(struct srcu_notifier_head *,
- struct notifier_block *);
+extern int atomic_notifier_chain_register(struct atomic_notifier_head *nh,
+ struct notifier_block *nb);
+extern int blocking_notifier_chain_register(struct blocking_notifier_head *nh,
+ struct notifier_block *nb);
+extern int raw_notifier_chain_register(struct raw_notifier_head *nh,
+ struct notifier_block *nb);
+extern int srcu_notifier_chain_register(struct srcu_notifier_head *nh,
+ struct notifier_block *nb);
+
+extern int atomic_notifier_chain_unregister(struct atomic_notifier_head *nh,
+ struct notifier_block *nb);
+extern int blocking_notifier_chain_unregister(struct blocking_notifier_head *nh,
+ struct notifier_block *nb);
+extern int raw_notifier_chain_unregister(struct raw_notifier_head *nh,
+ struct notifier_block *nb);
+extern int srcu_notifier_chain_unregister(struct srcu_notifier_head *nh,
+ struct notifier_block *nb);
-extern int atomic_notifier_call_chain(struct atomic_notifier_head *,
+extern int atomic_notifier_call_chain(struct atomic_notifier_head *nh,
unsigned long val, void *v);
-extern int __atomic_notifier_call_chain(struct atomic_notifier_head *,
- unsigned long val, void *v, int nr_to_call, unsigned int *nr_calls);
-extern int blocking_notifier_call_chain(struct blocking_notifier_head *,
+extern int __atomic_notifier_call_chain(struct atomic_notifier_head *nh,
+ unsigned long val, void *v, int nr_to_call, int *nr_calls);
+extern int blocking_notifier_call_chain(struct blocking_notifier_head *nh,
unsigned long val, void *v);
-extern int __blocking_notifier_call_chain(struct blocking_notifier_head *,
- unsigned long val, void *v, int nr_to_call, unsigned int *nr_calls);
-extern int raw_notifier_call_chain(struct raw_notifier_head *,
+extern int __blocking_notifier_call_chain(struct blocking_notifier_head *nh,
+ unsigned long val, void *v, int nr_to_call, int *nr_calls);
+extern int raw_notifier_call_chain(struct raw_notifier_head *nh,
unsigned long val, void *v);
-extern int __raw_notifier_call_chain(struct raw_notifier_head *,
- unsigned long val, void *v, int nr_to_call, unsigned int *nr_calls);
-extern int srcu_notifier_call_chain(struct srcu_notifier_head *,
+extern int __raw_notifier_call_chain(struct raw_notifier_head *nh,
+ unsigned long val, void *v, int nr_to_call, int *nr_calls);
+extern int srcu_notifier_call_chain(struct srcu_notifier_head *nh,
unsigned long val, void *v);
-extern int __srcu_notifier_call_chain(struct srcu_notifier_head *,
- unsigned long val, void *v, int nr_to_call, unsigned int *nr_calls);
+extern int __srcu_notifier_call_chain(struct srcu_notifier_head *nh,
+ unsigned long val, void *v, int nr_to_call, int *nr_calls);
#define NOTIFY_DONE 0x0000 /* Don't care */
#define NOTIFY_OK 0x0001 /* Suits me */
diff -puN kernel/sys.c~extend-notifier_call_chain-to-count-nr_calls-made-fixes kernel/sys.c
--- a/kernel/sys.c~extend-notifier_call_chain-to-count-nr_calls-made-fixes
+++ a/kernel/sys.c
@@ -134,9 +134,8 @@ static int notifier_chain_unregister(str
return -ENOENT;
}
-/*
+/**
* notifier_call_chain - Informs the registered notifiers about an event.
- *
* @nl: Pointer to head of the blocking notifier chain
* @val: Value passed unmodified to notifier function
* @v: Pointer passed unmodified to notifier function
@@ -144,14 +143,13 @@ static int notifier_chain_unregister(str
* value of this parameter is -1.
* @nr_calls: Records the number of notifications sent. Don't care
* value of this field is NULL.
- *
- * RETURN VALUE: notifier_call_chain returns the value returned by the
+ * @returns: notifier_call_chain returns the value returned by the
* last notifier function called.
*/
static int __kprobes notifier_call_chain(struct notifier_block **nl,
unsigned long val, void *v,
- int nr_to_call, unsigned int *nr_calls)
+ int nr_to_call, int *nr_calls)
{
int ret = NOTIFY_DONE;
struct notifier_block *nb, *next_nb;
@@ -227,8 +225,7 @@ int atomic_notifier_chain_unregister(str
EXPORT_SYMBOL_GPL(atomic_notifier_chain_unregister);
/**
- * __atomic_notifier_call_chain - Call functions in an atomic notifier
- * chain
+ * __atomic_notifier_call_chain - Call functions in an atomic notifier chain
* @nh: Pointer to head of the atomic notifier chain
* @val: Value passed unmodified to notifier function
* @v: Pointer passed unmodified to notifier function
@@ -249,7 +246,7 @@ EXPORT_SYMBOL_GPL(atomic_notifier_chain_
int __kprobes __atomic_notifier_call_chain(struct atomic_notifier_head *nh,
unsigned long val, void *v,
- int nr_to_call, unsigned int *nr_calls)
+ int nr_to_call, int *nr_calls)
{
int ret;
@@ -337,8 +334,7 @@ int blocking_notifier_chain_unregister(s
EXPORT_SYMBOL_GPL(blocking_notifier_chain_unregister);
/**
- * __blocking_notifier_call_chain - Call functions in a blocking notifier
- * chain
+ * __blocking_notifier_call_chain - Call functions in a blocking notifier chain
* @nh: Pointer to head of the blocking notifier chain
* @val: Value passed unmodified to notifier function
* @v: Pointer passed unmodified to notifier function
@@ -358,7 +354,7 @@ EXPORT_SYMBOL_GPL(blocking_notifier_chai
int __blocking_notifier_call_chain(struct blocking_notifier_head *nh,
unsigned long val, void *v,
- int nr_to_call, unsigned int * nr_calls)
+ int nr_to_call, int *nr_calls)
{
int ret;
@@ -442,7 +438,7 @@ EXPORT_SYMBOL_GPL(raw_notifier_chain_unr
int __raw_notifier_call_chain(struct raw_notifier_head *nh,
unsigned long val, void *v,
- int nr_to_call, unsigned int *nr_calls)
+ int nr_to_call, int *nr_calls)
{
return notifier_call_chain(&nh->head, val, v, nr_to_call, nr_calls);
}
@@ -527,7 +523,7 @@ int srcu_notifier_chain_unregister(struc
EXPORT_SYMBOL_GPL(srcu_notifier_chain_unregister);
/**
- * srcu_notifier_call_chain - Call functions in an SRCU notifier chain
+ * __srcu_notifier_call_chain - Call functions in an SRCU notifier chain
* @nh: Pointer to head of the SRCU notifier chain
* @val: Value passed unmodified to notifier function
* @v: Pointer passed unmodified to notifier function
@@ -547,7 +543,7 @@ EXPORT_SYMBOL_GPL(srcu_notifier_chain_un
int __srcu_notifier_call_chain(struct srcu_notifier_head *nh,
unsigned long val, void *v,
- int nr_to_call, unsigned int *nr_calls)
+ int nr_to_call, int *nr_calls)
{
int ret;
int idx;
_
Patches currently in -mm which might be from ego@xxxxxxxxxx are
git-cpufreq.patch
extend-notifier_call_chain-to-count-nr_calls-made.patch
extend-notifier_call_chain-to-count-nr_calls-made-fixes.patch
define-and-use-new-eventscpu_lock_acquire-and-cpu_lock_release.patch
define-and-use-new-eventscpu_lock_acquire-and-cpu_lock_release-fix.patch
eliminate-lock_cpu_hotplug-in-kernel-schedc.patch
handle-cpu_lock_acquire-and-cpu_lock_release-in-workqueue_cpu_callback.patch
-
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