From mboxrd@z Thu Jan 1 00:00:00 1970 From: Richard Guy Briggs Subject: [PATCH 2/6] audit: flatten kauditd_thread wait queue code Date: Thu, 24 Jan 2013 13:15:11 -0500 Message-ID: <1359051315-20905-3-git-send-email-rgb@redhat.com> References: <1359051315-20905-1-git-send-email-rgb@redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <1359051315-20905-1-git-send-email-rgb@redhat.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: linux-audit-bounces@redhat.com Errors-To: linux-audit-bounces@redhat.com To: linux-audit@redhat.com Cc: Richard Guy Briggs List-Id: linux-audit@redhat.com The wait queue control code in kauditd_thread() was nested deeper than necessary. The function has been flattened for better legibility. Signed-off-by: Richard Guy Briggs --- This is a code clean up in preparation to add a multicast netlink socket to kaudit for read-only userspace clients such as systemd, in addition to the bidirectional audit userspace client. kernel/audit.c | 26 +++++++++++++------------- 1 file changed, 13 insertions(+), 13 deletions(-) diff --git a/kernel/audit.c b/kernel/audit.c index 4bf486c..1531efb 100644 --- a/kernel/audit.c +++ b/kernel/audit.c @@ -458,10 +458,11 @@ static void flush_hold_queue(void) static int kauditd_thread(void *dummy) { - struct sk_buff *skb; - set_freezable(); while (!kthread_should_stop()) { + struct sk_buff *skb; + DECLARE_WAITQUEUE(wait, current); + flush_hold_queue(); skb = skb_dequeue(&audit_skb_queue); @@ -471,19 +472,18 @@ static int kauditd_thread(void *dummy) kauditd_send_skb(skb); else audit_printk_skb(skb); - } else { - DECLARE_WAITQUEUE(wait, current); - set_current_state(TASK_INTERRUPTIBLE); - add_wait_queue(&kauditd_wait, &wait); - - if (!skb_queue_len(&audit_skb_queue)) { - try_to_freeze(); - schedule(); - } + continue; + } + set_current_state(TASK_INTERRUPTIBLE); + add_wait_queue(&kauditd_wait, &wait); - __set_current_state(TASK_RUNNING); - remove_wait_queue(&kauditd_wait, &wait); + if (!skb_queue_len(&audit_skb_queue)) { + try_to_freeze(); + schedule(); } + + __set_current_state(TASK_RUNNING); + remove_wait_queue(&kauditd_wait, &wait); } return 0; } -- 1.8.0.2