From: Eric Paris Date: Tue, 30 Apr 2013 14:46:46 +0000 (-0400) Subject: audit: do not needlessly take a lock in tty_audit_exit X-Git-Url: http://git.cdn.openwrt.org/?a=commitdiff_plain;h=bee0a224e791cccbc7ecd7faf2d5932942668976;p=openwrt%2Fstaging%2Fblogic.git audit: do not needlessly take a lock in tty_audit_exit We were doing spin_lock_irq and spin_unlock_irq. This is STOOPID. If we were in interupt context we were already screwed and called panic() in do_exit(). So the irq stuff is useless. Also, these values can only be changed by receiving a netlink message from current. Since we are in do_exit() clearly we aren't in the syscall sending the netlink message to change these values. Thus, just read them and go with it. Signed-off-by: Eric Paris --- diff --git a/drivers/tty/tty_audit.c b/drivers/tty/tty_audit.c index a03a75163f02..a4fdce74f883 100644 --- a/drivers/tty/tty_audit.c +++ b/drivers/tty/tty_audit.c @@ -111,12 +111,9 @@ static void tty_audit_buf_push(struct tty_audit_buf *buf) void tty_audit_exit(void) { struct tty_audit_buf *buf; - unsigned long flags; - spin_lock_irqsave(¤t->sighand->siglock, flags); buf = current->signal->tty_audit_buf; current->signal->tty_audit_buf = NULL; - spin_unlock_irqrestore(¤t->sighand->siglock, flags); if (!buf) return;