diff options
| author | Tim Chase <[email protected]> | 2014-03-26 08:29:24 -0500 |
|---|---|---|
| committer | Brian Behlendorf <[email protected]> | 2014-04-08 12:44:42 -0700 |
| commit | 17a527cb0f44cef6582583e502621541061d8817 (patch) | |
| tree | 5619e8f29e0272ef6206ffa788061bdccc47d971 /include/sys/thread.h | |
| parent | e19101e08f25708b03e5ff98a4da5756cfd709f7 (diff) | |
Support post-3.13 kthread_create() semantics.
Provide spl_kthread_create() as a wrapper to the kernel's kthread_create()
to provide pre-3.13 semantics. Re-try if the call is interrupted or if it
would have returned -ENOMEM. Otherwise return NULL.
Signed-off-by: Chunwei Chen <[email protected]>
Signed-off-by: Tim Chase <[email protected]>
Signed-off-by: Brian Behlendorf <[email protected]>
Closes #339
Diffstat (limited to 'include/sys/thread.h')
| -rw-r--r-- | include/sys/thread.h | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/include/sys/thread.h b/include/sys/thread.h index 864a74bba..f6c197255 100644 --- a/include/sys/thread.h +++ b/include/sys/thread.h @@ -60,4 +60,32 @@ extern kthread_t *__thread_create(caddr_t stk, size_t stksize, int state, pri_t pri); extern void __thread_exit(void); +/* + * spl_kthread_create - Wrapper providing pre-3.13 semantics for + * kthread_create() in which it is not killable and less likely + * to return -ENOMEM. + */ +static inline struct task_struct * +spl_kthread_create(int (*func)(void *), void *data, const char namefmt[], ...) +{ + struct task_struct *tsk; + va_list args; + + va_start(args, namefmt); + do { + tsk = kthread_create_on_node(func, data, + -1, namefmt, args); + if (IS_ERR(tsk)) { + if (signal_pending(current)) { + clear_thread_flag(TIF_SIGPENDING); + continue; + } + if (PTR_ERR(tsk) == -ENOMEM) + continue; + return (NULL); + } else + return (tsk); + } while (1); +} + #endif /* _SPL_THREAD_H */ |