diff options
| -rw-r--r-- | kernel/signal.c | 31 |
1 files changed, 14 insertions, 17 deletions
diff --git a/kernel/signal.c b/kernel/signal.c index b92c3c9f8b9a..5a274705ba19 100644 --- a/kernel/signal.c +++ b/kernel/signal.c | |||
| @@ -936,34 +936,31 @@ force_sig_specific(int sig, struct task_struct *t) | |||
| 936 | * as soon as they're available, so putting the signal on the shared queue | 936 | * as soon as they're available, so putting the signal on the shared queue |
| 937 | * will be equivalent to sending it to one such thread. | 937 | * will be equivalent to sending it to one such thread. |
| 938 | */ | 938 | */ |
| 939 | #define wants_signal(sig, p, mask) \ | 939 | static inline int wants_signal(int sig, struct task_struct *p) |
| 940 | (!sigismember(&(p)->blocked, sig) \ | 940 | { |
| 941 | && !((p)->state & mask) \ | 941 | if (sigismember(&p->blocked, sig)) |
| 942 | && !((p)->flags & PF_EXITING) \ | 942 | return 0; |
| 943 | && (task_curr(p) || !signal_pending(p))) | 943 | if (p->flags & PF_EXITING) |
| 944 | 944 | return 0; | |
| 945 | if (sig == SIGKILL) | ||
| 946 | return 1; | ||
| 947 | if (p->state & (TASK_STOPPED | TASK_TRACED)) | ||
| 948 | return 0; | ||
| 949 | return task_curr(p) || !signal_pending(p); | ||
| 950 | } | ||
| 945 | 951 | ||
| 946 | static void | 952 | static void |
| 947 | __group_complete_signal(int sig, struct task_struct *p) | 953 | __group_complete_signal(int sig, struct task_struct *p) |
| 948 | { | 954 | { |
| 949 | unsigned int mask; | ||
| 950 | struct task_struct *t; | 955 | struct task_struct *t; |
| 951 | 956 | ||
| 952 | /* | 957 | /* |
| 953 | * Don't bother traced and stopped tasks (but | ||
| 954 | * SIGKILL will punch through that). | ||
| 955 | */ | ||
| 956 | mask = TASK_STOPPED | TASK_TRACED; | ||
| 957 | if (sig == SIGKILL) | ||
| 958 | mask = 0; | ||
| 959 | |||
| 960 | /* | ||
| 961 | * Now find a thread we can wake up to take the signal off the queue. | 958 | * Now find a thread we can wake up to take the signal off the queue. |
| 962 | * | 959 | * |
| 963 | * If the main thread wants the signal, it gets first crack. | 960 | * If the main thread wants the signal, it gets first crack. |
| 964 | * Probably the least surprising to the average bear. | 961 | * Probably the least surprising to the average bear. |
| 965 | */ | 962 | */ |
| 966 | if (wants_signal(sig, p, mask)) | 963 | if (wants_signal(sig, p)) |
| 967 | t = p; | 964 | t = p; |
| 968 | else if (thread_group_empty(p)) | 965 | else if (thread_group_empty(p)) |
| 969 | /* | 966 | /* |
| @@ -981,7 +978,7 @@ __group_complete_signal(int sig, struct task_struct *p) | |||
| 981 | t = p->signal->curr_target = p; | 978 | t = p->signal->curr_target = p; |
| 982 | BUG_ON(t->tgid != p->tgid); | 979 | BUG_ON(t->tgid != p->tgid); |
| 983 | 980 | ||
| 984 | while (!wants_signal(sig, t, mask)) { | 981 | while (!wants_signal(sig, t)) { |
| 985 | t = next_thread(t); | 982 | t = next_thread(t); |
| 986 | if (t == p->signal->curr_target) | 983 | if (t == p->signal->curr_target) |
| 987 | /* | 984 | /* |
