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authorOleg Nesterov <oleg@tv-sign.ru>2008-02-08 04:18:58 -0800
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2008-02-08 09:22:26 -0800
commit6b39c7bfbd1436836c0fb34c5b437fda1a7a3dd4 (patch)
tree60d3d9719eef3076527fcbf9c3cb362fe0f52d61 /kernel/signal.c
parent01b8b07a5d77d22e609267dcae74d15e3e9c5f13 (diff)
downloadblackbird-op-linux-6b39c7bfbd1436836c0fb34c5b437fda1a7a3dd4.tar.gz
blackbird-op-linux-6b39c7bfbd1436836c0fb34c5b437fda1a7a3dd4.zip
kill PT_ATTACHED
Since the patch "Fix ptrace_attach()/ptrace_traceme()/de_thread() race" commit f5b40e363ad6041a96e3da32281d8faa191597b9 we set PT_ATTACHED and change child->parent "atomically" wrt task_list lock. This means we can remove the checks like "PT_ATTACHED && ->parent != ptracer" which were needed to catch the "ptrace attach is in progress" case. We can also remove the flag itself since nobody else uses it. Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru> Acked-by: Roland McGrath <roland@redhat.com> Cc: Christoph Hellwig <hch@lst.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'kernel/signal.c')
-rw-r--r--kernel/signal.c5
1 files changed, 0 insertions, 5 deletions
diff --git a/kernel/signal.c b/kernel/signal.c
index 5d30ff561847..6d6d1ab39e7e 100644
--- a/kernel/signal.c
+++ b/kernel/signal.c
@@ -1556,11 +1556,6 @@ static inline int may_ptrace_stop(void)
{
if (!likely(current->ptrace & PT_PTRACED))
return 0;
-
- if (unlikely(current->parent == current->real_parent &&
- (current->ptrace & PT_ATTACHED)))
- return 0;
-
/*
* Are we in the middle of do_coredump?
* If so and our tracer is also part of the coredump stopping
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