[RFC PATCHv3 5/5] ipvs: debug the tick time

[Julian Anastasov <ja@xxxxxx>]

Just for testing print the tick time every 2 seconds

Signed-off-by: Julian Anastasov <ja@xxxxxx>
---
 net/netfilter/ipvs/ip_vs_est.c | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/net/netfilter/ipvs/ip_vs_est.c b/net/netfilter/ipvs/ip_vs_est.c
index 5f5ee29fdcb5..a765ec2b0594 100644
--- a/net/netfilter/ipvs/ip_vs_est.c
+++ b/net/netfilter/ipvs/ip_vs_est.c
@@ -141,7 +141,13 @@ static void ip_vs_tick_estimation(struct ip_vs_est_kt_data 
*kd, int row)
 {
        struct ip_vs_est_tick_data *td;
        int cid;
+       u64 ns = 0;
+       static int used_row = -1;
 
+       if (used_row < 0)
+               used_row = row;
+       if (row == used_row && !kd->id)
+               ns = ktime_get_ns();
        rcu_read_lock();
        td = rcu_dereference(kd->ticks[row]);
        if (!td)
@@ -158,6 +164,16 @@ static void ip_vs_tick_estimation(struct ip_vs_est_kt_data 
*kd, int row)
 
 out:
        rcu_read_unlock();
+       if (row == used_row && !kd->id) {
+               static int ncpu;
+
+               ns = ktime_sub(ktime_get_ns(), ns);
+               if (!ncpu)
+                       ncpu = num_possible_cpus();
+               pr_info("tick time: %lluns for %d CPUs, %d ests, %d chains, max 
depth %d\n",
+                       (unsigned long long) ns, ncpu, kd->tick_len[row],
+                       IPVS_EST_TICK_CHAINS, kd->chain_max_len);
+       }
 }
 
 static int ip_vs_estimation_kthread(void *data)
-- 
2.37.3