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authorRoland McGrath <roland@redhat.com>2008-03-25 02:36:23 +0100
committerRoland McGrath <roland@redhat.com>2008-07-17 03:02:33 +0200
commitf470021adb9190819c03d6d8c5c860a17480aa6d (patch)
tree9e5c2808138624e272b562a502cfd035ae59c268 /kernel/fork.c
parentdo_wait reorganization (diff)
downloadlinux-f470021adb9190819c03d6d8c5c860a17480aa6d.tar.xz
linux-f470021adb9190819c03d6d8c5c860a17480aa6d.zip
ptrace children revamp
ptrace no longer fiddles with the children/sibling links, and the old ptrace_children list is gone. Now ptrace, whether of one's own children or another's via PTRACE_ATTACH, just uses the new ptraced list instead. There should be no user-visible difference that matters. The only change is the order in which do_wait() sees multiple stopped children and stopped ptrace attachees. Since wait_task_stopped() was changed earlier so it no longer reorders the children list, we already know this won't cause any new problems. Signed-off-by: Roland McGrath <roland@redhat.com>
Diffstat (limited to 'kernel/fork.c')
-rw-r--r--kernel/fork.c6
1 files changed, 3 insertions, 3 deletions
diff --git a/kernel/fork.c b/kernel/fork.c
index 4bd2f516401f..adefc1131f27 100644
--- a/kernel/fork.c
+++ b/kernel/fork.c
@@ -1125,8 +1125,8 @@ static struct task_struct *copy_process(unsigned long clone_flags,
*/
p->group_leader = p;
INIT_LIST_HEAD(&p->thread_group);
- INIT_LIST_HEAD(&p->ptrace_children);
- INIT_LIST_HEAD(&p->ptrace_list);
+ INIT_LIST_HEAD(&p->ptrace_entry);
+ INIT_LIST_HEAD(&p->ptraced);
/* Now that the task is set up, run cgroup callbacks if
* necessary. We need to run them before the task is visible
@@ -1198,7 +1198,7 @@ static struct task_struct *copy_process(unsigned long clone_flags,
}
if (likely(p->pid)) {
- add_parent(p);
+ list_add_tail(&p->sibling, &p->real_parent->children);
if (unlikely(p->ptrace & PT_PTRACED))
__ptrace_link(p, current->parent);