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| author | Keir Fraser <keir.fraser@citrix.com> | 2007-11-24 13:27:59 +0000 |
|---|---|---|
| committer | Keir Fraser <keir.fraser@citrix.com> | 2007-11-24 13:27:59 +0000 |
| commit | 984c5a39ecf1cbb6fec01b602fa3b19891aee117 (patch) | |
| tree | fd9f7d8274b3ed0ce17dd9bfcee76888b31360bc /extras/mini-os/include/wait.h | |
| parent | 00e209e0591381489f530d39a496ba9f9fb7ab86 (diff) | |
| download | xen-984c5a39ecf1cbb6fec01b602fa3b19891aee117.tar.gz xen-984c5a39ecf1cbb6fec01b602fa3b19891aee117.tar.bz2 xen-984c5a39ecf1cbb6fec01b602fa3b19891aee117.zip | |
[Mini-OS] Make wake_up callback-safe
As it may compete with event handlers waking wait queues, wake_up
needs to be callback-safe.
Signed-off-by: Samuel Thibault <samuel.thibault@citrix.com>
Diffstat (limited to 'extras/mini-os/include/wait.h')
| -rw-r--r-- | extras/mini-os/include/wait.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/extras/mini-os/include/wait.h b/extras/mini-os/include/wait.h index b7af396149..6bd4d0ce95 100644 --- a/extras/mini-os/include/wait.h +++ b/extras/mini-os/include/wait.h @@ -58,13 +58,16 @@ static inline void remove_wait_queue(struct wait_queue *q) static inline void wake_up(struct wait_queue_head *head) { + unsigned long flags; struct list_head *tmp, *next; + local_irq_save(flags); list_for_each_safe(tmp, next, &head->thread_list) { struct wait_queue *curr; curr = list_entry(tmp, struct wait_queue, thread_list); wake(curr->thread); } + local_irq_restore(flags); } #define add_waiter(w, wq) do { \ |