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| author | Al Viro <viro@zeniv.linux.org.uk> | 2012-06-27 09:24:13 +0400 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2012-07-22 23:57:55 +0400 |
| commit | 158e1645e07f3e9f7e4962d7a0997f5c3b98311b (patch) | |
| tree | 09d695b3a0410afe15f7fd6006bc6c1effee151d /include | |
| parent | 41f9d29f09ca0b22c3631e8a39676e74cda9bcc0 (diff) | |
| download | lwn-158e1645e07f3e9f7e4962d7a0997f5c3b98311b.tar.gz lwn-158e1645e07f3e9f7e4962d7a0997f5c3b98311b.zip | |
trim task_work: get rid of hlist
layout based on Oleg's suggestion; single-linked list,
task->task_works points to the last element, forward pointer
from said last element points to head. I'd still prefer
much more regular scheme with two pointers in task_work,
but...
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/sched.h | 2 | ||||
| -rw-r--r-- | include/linux/task_work.h | 4 | ||||
| -rw-r--r-- | include/linux/tracehook.h | 2 |
3 files changed, 4 insertions, 4 deletions
diff --git a/include/linux/sched.h b/include/linux/sched.h index 4059c0f33f07..b9216ebc2789 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -1405,7 +1405,7 @@ struct task_struct { int (*notifier)(void *priv); void *notifier_data; sigset_t *notifier_mask; - struct hlist_head task_works; + void *task_works; struct audit_context *audit_context; #ifdef CONFIG_AUDITSYSCALL diff --git a/include/linux/task_work.h b/include/linux/task_work.h index 627421c0e108..3b3e2c8d037b 100644 --- a/include/linux/task_work.h +++ b/include/linux/task_work.h @@ -8,7 +8,7 @@ struct task_work; typedef void (*task_work_func_t)(struct task_work *); struct task_work { - struct hlist_node hlist; + struct task_work *next; task_work_func_t func; }; @@ -24,7 +24,7 @@ void task_work_run(void); static inline void exit_task_work(struct task_struct *task) { - if (unlikely(!hlist_empty(&task->task_works))) + if (unlikely(task->task_works)) task_work_run(); } diff --git a/include/linux/tracehook.h b/include/linux/tracehook.h index 6a4d82bedb03..1e98b5530425 100644 --- a/include/linux/tracehook.h +++ b/include/linux/tracehook.h @@ -192,7 +192,7 @@ static inline void tracehook_notify_resume(struct pt_regs *regs) * hlist_add_head(task->task_works); */ smp_mb__after_clear_bit(); - if (unlikely(!hlist_empty(¤t->task_works))) + if (unlikely(current->task_works)) task_work_run(); } |