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authorOleg Nesterov2006-03-28 16:11:29 -0800
committerLinus Torvalds2006-03-28 18:36:44 -0800
commita1d5e21e3e388fb2c16463d007e788b1e41b74f1 (patch)
treeab89b42c9c8a873ac2f7e98dac2dc1c1807d27a1 /kernel
parent883606a7c9e84e206f96c38f88c4bd66df72f51e (diff)
[PATCH] do_notify_parent_cldstop: remove 'to_self' param
The previous patch has changed callsites of do_notify_parent_cldstop() so that to_self == (->ptrace & PT_PTRACED) always (as it should be). We can remove this parameter now. Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru> Cc: john stultz <johnstul@us.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'kernel')
-rw-r--r--kernel/signal.c32
1 files changed, 11 insertions, 21 deletions
diff --git a/kernel/signal.c b/kernel/signal.c
index 24d5059ab0a9..0528a959daa9 100644
--- a/kernel/signal.c
+++ b/kernel/signal.c
@@ -591,9 +591,7 @@ static int check_kill_permission(int sig, struct siginfo *info,
}
/* forward decl */
-static void do_notify_parent_cldstop(struct task_struct *tsk,
- int to_self,
- int why);
+static void do_notify_parent_cldstop(struct task_struct *tsk, int why);
/*
* Handle magic process-wide effects of stop/continue signals.
@@ -643,7 +641,7 @@ static void handle_stop_signal(int sig, struct task_struct *p)
p->signal->group_stop_count = 0;
p->signal->flags = SIGNAL_STOP_CONTINUED;
spin_unlock(&p->sighand->siglock);
- do_notify_parent_cldstop(p, (p->ptrace & PT_PTRACED), CLD_STOPPED);
+ do_notify_parent_cldstop(p, CLD_STOPPED);
spin_lock(&p->sighand->siglock);
}
rm_from_queue(SIG_KERNEL_STOP_MASK, &p->signal->shared_pending);
@@ -684,7 +682,7 @@ static void handle_stop_signal(int sig, struct task_struct *p)
p->signal->flags = SIGNAL_STOP_CONTINUED;
p->signal->group_exit_code = 0;
spin_unlock(&p->sighand->siglock);
- do_notify_parent_cldstop(p, (p->ptrace & PT_PTRACED), CLD_CONTINUED);
+ do_notify_parent_cldstop(p, CLD_CONTINUED);
spin_lock(&p->sighand->siglock);
} else {
/*
@@ -1519,14 +1517,14 @@ void do_notify_parent(struct task_struct *tsk, int sig)
spin_unlock_irqrestore(&psig->siglock, flags);
}
-static void do_notify_parent_cldstop(struct task_struct *tsk, int to_self, int why)
+static void do_notify_parent_cldstop(struct task_struct *tsk, int why)
{
struct siginfo info;
unsigned long flags;
struct task_struct *parent;
struct sighand_struct *sighand;
- if (to_self)
+ if (tsk->ptrace & PT_PTRACED)
parent = tsk->parent;
else {
tsk = tsk->group_leader;
@@ -1601,7 +1599,7 @@ static void ptrace_stop(int exit_code, int nostop_code, siginfo_t *info)
!(current->ptrace & PT_ATTACHED)) &&
(likely(current->parent->signal != current->signal) ||
!unlikely(current->signal->flags & SIGNAL_GROUP_EXIT))) {
- do_notify_parent_cldstop(current, 1, CLD_TRAPPED);
+ do_notify_parent_cldstop(current, CLD_TRAPPED);
read_unlock(&tasklist_lock);
schedule();
} else {
@@ -1650,25 +1648,17 @@ void ptrace_notify(int exit_code)
static void
finish_stop(int stop_count)
{
- int to_self;
-
/*
* If there are no other threads in the group, or if there is
* a group stop in progress and we are the last to stop,
* report to the parent. When ptraced, every thread reports itself.
*/
- if (current->ptrace & PT_PTRACED)
- to_self = 1;
- else if (stop_count == 0)
- to_self = 0;
- else
- goto out;
-
- read_lock(&tasklist_lock);
- do_notify_parent_cldstop(current, to_self, CLD_STOPPED);
- read_unlock(&tasklist_lock);
+ if (stop_count == 0 || (current->ptrace & PT_PTRACED)) {
+ read_lock(&tasklist_lock);
+ do_notify_parent_cldstop(current, CLD_STOPPED);
+ read_unlock(&tasklist_lock);
+ }
-out:
schedule();
/*
* Now we don't run again until continued.