The patch titled
Debug variants of linked list macros
has been removed from the -mm tree. Its filename is
debug-variants-of-linked-list-macros.patch
This patch was dropped because it was merged into mainline or a subsystem tree
------------------------------------------------------
Subject: Debug variants of linked list macros
From: Dave Jones <davej@xxxxxxxxxx>
Signed-off-by: Dave Jones <davej@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxx>
---
include/linux/list.h | 15 +++++++
lib/Kconfig.debug | 9 ++++
lib/Makefile | 1
lib/list_debug.c | 77 +++++++++++++++++++++++++++++++++++++++++
4 files changed, 102 insertions(+)
diff -puN include/linux/list.h~debug-variants-of-linked-list-macros include/linux/list.h
--- a/include/linux/list.h~debug-variants-of-linked-list-macros
+++ a/include/linux/list.h
@@ -39,6 +39,7 @@ static inline void INIT_LIST_HEAD(struct
* This is only for internal list manipulation where we know
* the prev/next entries already!
*/
+#ifndef CONFIG_DEBUG_LIST
static inline void __list_add(struct list_head *new,
struct list_head *prev,
struct list_head *next)
@@ -48,6 +49,11 @@ static inline void __list_add(struct lis
new->prev = prev;
prev->next = new;
}
+#else
+extern void __list_add(struct list_head *new,
+ struct list_head *prev,
+ struct list_head *next);
+#endif
/**
* list_add - add a new entry
@@ -57,10 +63,15 @@ static inline void __list_add(struct lis
* Insert a new entry after the specified head.
* This is good for implementing stacks.
*/
+#ifndef CONFIG_DEBUG_LIST
static inline void list_add(struct list_head *new, struct list_head *head)
{
__list_add(new, head, head->next);
}
+#else
+extern void list_add(struct list_head *new, struct list_head *head);
+#endif
+
/**
* list_add_tail - add a new entry
@@ -153,12 +164,16 @@ static inline void __list_del(struct lis
* Note: list_empty on entry does not return true after this, the entry is
* in an undefined state.
*/
+#ifndef CONFIG_DEBUG_LIST
static inline void list_del(struct list_head *entry)
{
__list_del(entry->prev, entry->next);
entry->next = LIST_POISON1;
entry->prev = LIST_POISON2;
}
+#else
+extern void list_del(struct list_head *entry);
+#endif
/**
* list_del_rcu - deletes entry from list without re-initialization
diff -puN lib/Kconfig.debug~debug-variants-of-linked-list-macros lib/Kconfig.debug
--- a/lib/Kconfig.debug~debug-variants-of-linked-list-macros
+++ a/lib/Kconfig.debug
@@ -320,6 +320,15 @@ config DEBUG_VM
If unsure, say N.
+config DEBUG_LIST
+ bool "Debug linked list manipulation"
+ depends on DEBUG_KERNEL
+ help
+ Enable this to turn on extended checks in the linked-list
+ walking routines.
+
+ If unsure, say N.
+
config FRAME_POINTER
bool "Compile the kernel with frame pointers"
depends on DEBUG_KERNEL && (X86 || CRIS || M68K || M68KNOMMU || FRV || UML || S390 || AVR32 || SUPERH)
diff -puN lib/Makefile~debug-variants-of-linked-list-macros lib/Makefile
--- a/lib/Makefile~debug-variants-of-linked-list-macros
+++ a/lib/Makefile
@@ -28,6 +28,7 @@ lib-$(CONFIG_GENERIC_HWEIGHT) += hweight
obj-$(CONFIG_LOCK_KERNEL) += kernel_lock.o
obj-$(CONFIG_PLIST) += plist.o
obj-$(CONFIG_DEBUG_PREEMPT) += smp_processor_id.o
+obj-$(CONFIG_DEBUG_LIST) += list_debug.o
ifneq ($(CONFIG_HAVE_DEC_LOCK),y)
lib-y += dec_and_lock.o
diff -puN /dev/null lib/list_debug.c
--- /dev/null
+++ a/lib/list_debug.c
@@ -0,0 +1,77 @@
+/*
+ * Copyright 2006, Red Hat, Inc., Dave Jones
+ * Released under the General Public License (GPL).
+ *
+ * This file contains the linked list implementations for
+ * DEBUG_LIST.
+ */
+
+#include <linux/module.h>
+#include <linux/list.h>
+
+/*
+ * Insert a new entry between two known consecutive entries.
+ *
+ * This is only for internal list manipulation where we know
+ * the prev/next entries already!
+ */
+
+void __list_add(struct list_head *new,
+ struct list_head *prev,
+ struct list_head *next)
+{
+ if (unlikely(next->prev != prev)) {
+ printk(KERN_ERR "list_add corruption. next->prev should be %p, but was %p\n",
+ prev, next->prev);
+ BUG();
+ }
+ if (unlikely(prev->next != next)) {
+ printk(KERN_ERR "list_add corruption. prev->next should be %p, but was %p\n",
+ next, prev->next);
+ BUG();
+ }
+ next->prev = new;
+ new->next = next;
+ new->prev = prev;
+ prev->next = new;
+}
+EXPORT_SYMBOL(__list_add);
+
+/**
+ * list_add - add a new entry
+ * @new: new entry to be added
+ * @head: list head to add it after
+ *
+ * Insert a new entry after the specified head.
+ * This is good for implementing stacks.
+ */
+void list_add(struct list_head *new, struct list_head *head)
+{
+ __list_add(new, head, head->next);
+}
+EXPORT_SYMBOL(list_add);
+
+/**
+ * list_del - deletes entry from list.
+ * @entry: the element to delete from the list.
+ * Note: list_empty on entry does not return true after this, the entry is
+ * in an undefined state.
+ */
+void list_del(struct list_head *entry)
+{
+ if (unlikely(entry->prev->next != entry)) {
+ printk(KERN_ERR "list_del corruption. prev->next should be %p, but was %p\n",
+ entry, entry->prev->next);
+ BUG();
+ }
+ if (unlikely(entry->next->prev != entry)) {
+ printk(KERN_ERR "list_del corruption. next->prev should be %p, but was %p\n",
+ entry, entry->next->prev);
+ BUG();
+ }
+ __list_del(entry->prev, entry->next);
+ entry->next = LIST_POISON1;
+ entry->prev = LIST_POISON2;
+}
+EXPORT_SYMBOL(list_del);
+
_
Patches currently in -mm which might be from davej@xxxxxxxxxx are
origin.patch
git-agpgart.patch
git-cpufreq.patch
git-dvb.patch
remove-silly-messages-from-input-layer.patch
git-libata-all.patch
forcedeth-hardirq-lockdep-warning.patch
tickle-nmi-watchdog-on-serial-output.patch
git-watchdog.patch
sched-dont-print-migration-cost-when-only-1-cpu.patch
fbcon-use-persistent-allocation-for-cursor-blinking.patch
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