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author | 2011-02-18 11:32:28 -0800 | |
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committer | 2011-02-18 11:32:28 -0800 | |
commit | 3c18d4de86e4a7f93815c081e50e0543fa27200f (patch) | |
tree | adea22bccd076266bf94cbda3ed6d9a98eea1206 /include/linux/list.h | |
parent | Merge branch 'pm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/rafa... (diff) | |
download | linux-3c18d4de86e4a7f93815c081e50e0543fa27200f.tar.gz linux-3c18d4de86e4a7f93815c081e50e0543fa27200f.tar.bz2 linux-3c18d4de86e4a7f93815c081e50e0543fa27200f.zip |
Expand CONFIG_DEBUG_LIST to several other list operations
When list debugging is enabled, we aim to readably show list corruption
errors, and the basic list_add/list_del operations end up having extra
debugging code in them to do some basic validation of the list entries.
However, "list_del_init()" and "list_move[_tail]()" ended up avoiding
the debug code due to how they were written. This fixes that.
So the _next_ time we have list_move() problems with stale list entries,
we'll hopefully have an easier time finding them..
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/linux/list.h')
-rw-r--r-- | include/linux/list.h | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/include/linux/list.h b/include/linux/list.h index 9a5f8a71810c..3a54266a1e85 100644 --- a/include/linux/list.h +++ b/include/linux/list.h @@ -96,6 +96,11 @@ static inline void __list_del(struct list_head * prev, struct list_head * next) * in an undefined state. */ #ifndef CONFIG_DEBUG_LIST +static inline void __list_del_entry(struct list_head *entry) +{ + __list_del(entry->prev, entry->next); +} + static inline void list_del(struct list_head *entry) { __list_del(entry->prev, entry->next); @@ -103,6 +108,7 @@ static inline void list_del(struct list_head *entry) entry->prev = LIST_POISON2; } #else +extern void __list_del_entry(struct list_head *entry); extern void list_del(struct list_head *entry); #endif @@ -135,7 +141,7 @@ static inline void list_replace_init(struct list_head *old, */ static inline void list_del_init(struct list_head *entry) { - __list_del(entry->prev, entry->next); + __list_del_entry(entry); INIT_LIST_HEAD(entry); } @@ -146,7 +152,7 @@ static inline void list_del_init(struct list_head *entry) */ static inline void list_move(struct list_head *list, struct list_head *head) { - __list_del(list->prev, list->next); + __list_del_entry(list); list_add(list, head); } @@ -158,7 +164,7 @@ static inline void list_move(struct list_head *list, struct list_head *head) static inline void list_move_tail(struct list_head *list, struct list_head *head) { - __list_del(list->prev, list->next); + __list_del_entry(list); list_add_tail(list, head); } |