[ARCHIVE DEBUG 02/13] audit_debug: squawk when digging into reserve

[Richard Guy Briggs]

Debug when audit_backlog_limit reserves are used for bypassing the queue
limits by listing timing, process and queue length.

Signed-off-by: Richard Guy Briggs <rgb at redhat.com>
---
 kernel/audit.c |    8 ++++++++
 1 files changed, 8 insertions(+), 0 deletions(-)

diff --git a/kernel/audit.c b/kernel/audit.c
index 795d604..d4e19fc 100644
--- a/kernel/audit.c
+++ b/kernel/audit.c
@@ -1391,6 +1391,14 @@ struct audit_buffer *audit_log_start(struct audit_context *ctx, gfp_t gfp_mask,
 			reserve = 0;
 		rcu_read_unlock();
 	}
+
+	if (reserve) {
+		pr_warn("( %lu %lu )"
+			" Qreq apid=%d pid=%d comm=%s type=%d reserve=%d Qlen=%d\n",
+			timeout_start, jiffies-timeout_start,
+			audit_pid, current->pid, current->comm, type, reserve, skb_queue_len(&audit_skb_queue));
+	}
+
 	while (audit_backlog_limit
 	       && skb_queue_len(&audit_skb_queue) > audit_backlog_limit + reserve) {
 		if (gfp_mask & __GFP_WAIT && audit_backlog_wait_time) {
-- 
1.7.1