[ARCHIVE DEBUG 11/13] audit_debug: instrument audit_receive timing

[Richard Guy Briggs]

Debug the timing and stalling of calls to audit_receive() for
processes we care about.

Signed-off-by: Richard Guy Briggs <rgb at redhat.com>
---
 kernel/audit.c |   16 ++++++++++++++++
 1 files changed, 16 insertions(+), 0 deletions(-)

diff --git a/kernel/audit.c b/kernel/audit.c
index 9e9c02b..76b6878 100644
--- a/kernel/audit.c
+++ b/kernel/audit.c
@@ -1136,6 +1136,18 @@ static void audit_receive(struct sk_buff  *skb)
 	
 	pid_t pid = 0;
 
+	int pr = 0;
+	//pid_t audit_pid_cached;
+	pid_t audit_pid_cached = audit_pid;
+
+	if (current->tgid == 1 || (audit_pid && audit_pid == current->tgid)) {
+		//pr_warn("( %lu )audit_receive apid=%d pid=%d(%s) Qlen=%d\n",
+			//jiffies, audit_pid, current->pid, current->comm, skb_queue_len(&audit_skb_queue));
+		pr = 1;
+	//} else {
+		//audit_pid_cached = audit_pid;
+	}
+
 	if (!mutex_trylock(&audit_cmd_mutex)) {
 		rcu_read_lock();
 		owner = ACCESS_ONCE(audit_cmd_mutex.owner);
@@ -1150,6 +1162,10 @@ static void audit_receive(struct sk_buff  *skb)
 	}
 	audit_receive_skb(skb);
 	mutex_unlock(&audit_cmd_mutex);
+
+	if (pr || current->tgid == 1 || (audit_pid && audit_pid == current->tgid))
+		pr_warn("( %lu %lu )audit_receive-exit apid=%d apid-old=%d pid=%d(%s) Qlen=%d\n",
+			trytime, jiffies - trytime, audit_pid, audit_pid_cached, current->pid, current->comm, skb_queue_len(&audit_skb_queue));
 }
 
 /* Run custom bind function on netlink socket group connect or bind requests. */
-- 
1.7.1