diff options
| author | Oleg Nesterov <oleg@tv-sign.ru> | 2008-02-08 15:18:59 +0300 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2008-02-08 20:22:26 +0300 |
| commit | 34a1738f7da0b3d28d4b066d03a78f46b8cab68f (patch) | |
| tree | 4e7312642adb1aab0ba9fa4f29b4912c9ee035d2 | |
| parent | 6b39c7bfbd1436836c0fb34c5b437fda1a7a3dd4 (diff) | |
| download | linux-34a1738f7da0b3d28d4b066d03a78f46b8cab68f.tar.xz | |
kill my_ptrace_child()
Now that my_ptrace_child() is trivial we can use the "p->ptrace & PT_PTRACED"
inline and simplify the corresponding logic in do_wait: we can't find the
child in TASK_TRACED state without PT_PTRACED flag set, ptrace_untrace()
either sets TASK_STOPPED or wakes up the tracee.
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>
| -rw-r--r-- | kernel/exit.c | 23 |
1 files changed, 3 insertions, 20 deletions
diff --git a/kernel/exit.c b/kernel/exit.c index 1f2c15297f2d..b5ff2b121093 100644 --- a/kernel/exit.c +++ b/kernel/exit.c @@ -1511,12 +1511,6 @@ static int wait_task_continued(struct task_struct *p, int noreap, return retval; } - -static inline int my_ptrace_child(struct task_struct *p) -{ - return p->ptrace & PT_PTRACED; -} - static long do_wait(pid_t pid, int options, struct siginfo __user *infop, int __user *stat_addr, struct rusage __user *ru) { @@ -1555,22 +1549,11 @@ repeat: /* * It's stopped now, so it might later * continue, exit, or stop again. - * - * When we hit the race with PTRACE_ATTACH, we - * will not report this child. But the race - * means it has not yet been moved to our - * ptrace_children list, so we need to set the - * flag here to avoid a spurious ECHILD when - * the race happens with the only child. */ flag = 1; - - if (!my_ptrace_child(p)) { - if (task_is_traced(p)) - continue; - if (!(options & WUNTRACED)) - continue; - } + if (!(p->ptrace & PT_PTRACED) && + !(options & WUNTRACED)) + continue; retval = wait_task_stopped(p, ret == 2, (options & WNOWAIT), infop, |