From: Julian Anastasov <ja@xxxxxx>
Zero the new percpu stats because we copy from there.
Signed-off-by: Julian Anastasov <ja@xxxxxx>
Signed-off-by: Simon Horman <horms@xxxxxxxxxxxx>
---
net/netfilter/ipvs/ip_vs_ctl.c | 17 +++++++++++++++++
1 files changed, 17 insertions(+), 0 deletions(-)
diff --git a/net/netfilter/ipvs/ip_vs_ctl.c b/net/netfilter/ipvs/ip_vs_ctl.c
index a2a67ad..fd74527 100644
--- a/net/netfilter/ipvs/ip_vs_ctl.c
+++ b/net/netfilter/ipvs/ip_vs_ctl.c
@@ -715,8 +715,25 @@ static void ip_vs_trash_cleanup(struct net *net)
static void
ip_vs_zero_stats(struct ip_vs_stats *stats)
{
+ struct ip_vs_cpu_stats *cpustats = stats->cpustats;
+ int i;
+
spin_lock_bh(&stats->lock);
+ for_each_possible_cpu(i) {
+ struct ip_vs_cpu_stats *u = per_cpu_ptr(cpustats, i);
+ unsigned int start;
+
+ /* Do not pretend to be writer, it is enough to
+ * sync with writers that modify the u64 counters
+ * because under stats->lock we are the only reader.
+ */
+ do {
+ start = u64_stats_fetch_begin(&u->syncp);
+ memset(&u->ustats, 0, sizeof(u->ustats));
+ } while (u64_stats_fetch_retry(&u->syncp, start));
+ }
+
memset(&stats->ustats, 0, sizeof(stats->ustats));
ip_vs_zero_estimator(stats);
--
1.7.2.3
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