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author | Pavel Emelyanov <xemul@openvz.org> | 2008-04-30 00:52:55 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-04-30 08:29:36 -0700 |
commit | 4cd4b6d4e0372075f846feb85aea016cbdbfec4c (patch) | |
tree | 219dd1d4de6313bcc9dd232fe3186423875bea5e | |
parent | 5fcd835bf8c2cde06404559b1904e2f1dfcb4567 (diff) | |
download | linux-3.10-4cd4b6d4e0372075f846feb85aea016cbdbfec4c.tar.gz linux-3.10-4cd4b6d4e0372075f846feb85aea016cbdbfec4c.tar.bz2 linux-3.10-4cd4b6d4e0372075f846feb85aea016cbdbfec4c.zip |
signals: fold complete_signal() into send_signal/do_send_sigqueue
Factor out complete_signal() callsites. This change completely unifies the
helpers sending the specific/group signals.
Signed-off-by: Pavel Emelyanov <xemul@openvz.org>
Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru>
Cc: Roland McGrath <roland@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
-rw-r--r-- | kernel/signal.c | 46 |
1 files changed, 11 insertions, 35 deletions
diff --git a/kernel/signal.c b/kernel/signal.c index fc1cb03c241..87424f7a4f3 100644 --- a/kernel/signal.c +++ b/kernel/signal.c @@ -826,7 +826,8 @@ static int send_signal(int sig, struct siginfo *info, struct task_struct *t, out_set: sigaddset(&pending->signal, sig); - return 1; + complete_signal(sig, t, group); + return 0; } int print_fatal_signals; @@ -861,17 +862,16 @@ static int __init setup_print_fatal_signals(char *str) __setup("print-fatal-signals=", setup_print_fatal_signals); +int +__group_send_sig_info(int sig, struct siginfo *info, struct task_struct *p) +{ + return send_signal(sig, info, p, 1); +} + static int specific_send_sig_info(int sig, struct siginfo *info, struct task_struct *t) { - int ret; - - ret = send_signal(sig, info, t, 0); - if (ret <= 0) - return ret; - - complete_signal(sig, t, 0); - return 0; + return send_signal(sig, info, t, 0); } /* @@ -914,24 +914,6 @@ force_sig_specific(int sig, struct task_struct *t) force_sig_info(sig, SEND_SIG_FORCED, t); } -int -__group_send_sig_info(int sig, struct siginfo *info, struct task_struct *p) -{ - int ret; - - /* - * Put this signal on the shared-pending queue, or fail with EAGAIN. - * We always use the shared queue for process-wide signals, - * to avoid several races. - */ - ret = send_signal(sig, info, p, 1); - if (ret <= 0) - return ret; - - complete_signal(sig, p, 1); - return 0; -} - /* * Nuke all other threads in the group. */ @@ -1263,6 +1245,7 @@ static int do_send_sigqueue(int sig, struct sigqueue *q, struct task_struct *t, { struct sigpending *pending; + BUG_ON(!(q->flags & SIGQUEUE_PREALLOC)); handle_stop_signal(sig, t); if (unlikely(!list_empty(&q->list))) { @@ -1283,6 +1266,7 @@ static int do_send_sigqueue(int sig, struct sigqueue *q, struct task_struct *t, pending = group ? &t->signal->shared_pending : &t->pending; list_add_tail(&q->list, &pending->list); sigaddset(&pending->signal, sig); + complete_signal(sig, t, group); return 0; } @@ -1292,8 +1276,6 @@ int send_sigqueue(int sig, struct sigqueue *q, struct task_struct *p) unsigned long flags; int ret = -1; - BUG_ON(!(q->flags & SIGQUEUE_PREALLOC)); - /* * The rcu based delayed sighand destroy makes it possible to * run this without tasklist lock held. The task struct itself @@ -1307,8 +1289,6 @@ int send_sigqueue(int sig, struct sigqueue *q, struct task_struct *p) ret = do_send_sigqueue(sig, q, p, 0); - complete_signal(sig, p, 0); - unlock_task_sighand(p, &flags); out_err: return ret; @@ -1320,15 +1300,11 @@ send_group_sigqueue(int sig, struct sigqueue *q, struct task_struct *p) unsigned long flags; int ret; - BUG_ON(!(q->flags & SIGQUEUE_PREALLOC)); - /* Since it_lock is held, p->sighand cannot be NULL. */ spin_lock_irqsave(&p->sighand->siglock, flags); ret = do_send_sigqueue(sig, q, p, 1); - complete_signal(sig, p, 1); - spin_unlock_irqrestore(&p->sighand->siglock, flags); return ret; |