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| author | Oleg Nesterov <oleg@tv-sign.ru> | 2008-04-30 00:52:36 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-04-30 08:29:33 -0700 |
| commit | bfc4b0890af566940de6e7aeb4b5faf46d3c3513 (patch) | |
| tree | d3c0d7ad6e3d619345acf7130f053514177bf5c7 /kernel/exit.c | |
| parent | 573cf9ad72c13750e86c91de43477e9dfb440523 (diff) | |
| download | lwn-bfc4b0890af566940de6e7aeb4b5faf46d3c3513.tar.gz lwn-bfc4b0890af566940de6e7aeb4b5faf46d3c3513.zip | |
signals: do_group_exit(): use signal_group_exit() more consistently
do_group_exit() checks SIGNAL_GROUP_EXIT to avoid taking sighand->siglock.
Since ed5d2cac114202fe2978a9cbcab8f5032796d538 exec() doesn't set this
flag, we should use signal_group_exit().
This is not needed for correctness, but can speedup the multithreaded exec
and makes the code more consistent.
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>
Diffstat (limited to 'kernel/exit.c')
| -rw-r--r-- | kernel/exit.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/kernel/exit.c b/kernel/exit.c index ae0f2c4e452b..6d019aa8522e 100644 --- a/kernel/exit.c +++ b/kernel/exit.c @@ -1115,12 +1115,13 @@ asmlinkage long sys_exit(int error_code) NORET_TYPE void do_group_exit(int exit_code) { + struct signal_struct *sig = current->signal; + BUG_ON(exit_code & 0x80); /* core dumps don't get here */ - if (current->signal->flags & SIGNAL_GROUP_EXIT) - exit_code = current->signal->group_exit_code; + if (signal_group_exit(sig)) + exit_code = sig->group_exit_code; else if (!thread_group_empty(current)) { - struct signal_struct *const sig = current->signal; struct sighand_struct *const sighand = current->sighand; spin_lock_irq(&sighand->siglock); if (signal_group_exit(sig)) |