diff options
| author |   Kalle Valo <kvalo@qca.qualcomm.com> | 2012-06-14 14:20:18 +0300 |
|---|---|---|
| committer | Kalle Valo <kvalo@qca.qualcomm.com> | 2012-06-14 14:44:49 +0300 |
| commit | d987dd137bac8dca9b0015763d3106f48bb8a596 (patch) | |
| tree | ef887505b3c904c548d58ec9bb6f4970a0877042 /include/linux/tracehook.h | |
| parent | ath6kl: fix fw capability parsing (diff) | |
| parent | Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless (diff) | |
Merge remote branch 'wireless-next/master' into ath6kl-next
Conflicts:
drivers/net/wireless/ath/ath6kl/cfg80211.c
Diffstat (limited to 'include/linux/tracehook.h')
| -rw-r--r-- | include/linux/tracehook.h | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/include/linux/tracehook.h b/include/linux/tracehook.h index 51bd91d911c3..6a4d82bedb03 100644 --- a/include/linux/tracehook.h +++ b/include/linux/tracehook.h @@ -49,6 +49,7 @@ #include <linux/sched.h> #include <linux/ptrace.h> #include <linux/security.h> +#include <linux/task_work.h> struct linux_binprm; /* @@ -153,7 +154,6 @@ static inline void tracehook_signal_handler(int sig, siginfo_t *info, ptrace_notify(SIGTRAP); } -#ifdef TIF_NOTIFY_RESUME /** * set_notify_resume - cause tracehook_notify_resume() to be called * @task: task that will call tracehook_notify_resume() @@ -165,8 +165,10 @@ static inline void tracehook_signal_handler(int sig, siginfo_t *info, */ static inline void set_notify_resume(struct task_struct *task) { +#ifdef TIF_NOTIFY_RESUME if (!test_and_set_tsk_thread_flag(task, TIF_NOTIFY_RESUME)) kick_process(task); +#endif } /** @@ -184,7 +186,14 @@ static inline void set_notify_resume(struct task_struct *task) */ static inline void tracehook_notify_resume(struct pt_regs *regs) { + /* + * The caller just cleared TIF_NOTIFY_RESUME. This barrier + * pairs with task_work_add()->set_notify_resume() after + * hlist_add_head(task->task_works); + */ + smp_mb__after_clear_bit(); + if (unlikely(!hlist_empty(¤t->task_works))) + task_work_run(); } -#endif /* TIF_NOTIFY_RESUME */ #endif /* <linux/tracehook.h> */ |