RDMA/counter: Query a counter before release

Query a dynamically-allocated counter before release it, to update it's
hwcounters and log all of them into history data. Otherwise all values of
these hwcounters will be lost.

Fixes: f34a55e497e8 ("RDMA/core: Get sum value of all counters when perform a sysfs stat read")
Link: https://lore.kernel.org/r/20200621110000.56059-1-leon@kernel.org
Signed-off-by: Mark Zhang <markz@mellanox.com>
Reviewed-by: Maor Gottlieb <maorg@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>

diff --git a/drivers/infiniband/core/counters.c b/drivers/infiniband/core/counters.c
index 2257d7f..738d1fa 100644 (file)
--- a/drivers/infiniband/core/counters.c
+++ b/drivers/infiniband/core/counters.c
@@ -202,7 +202,7 @@ static int __rdma_counter_unbind_qp(struct ib_qp *qp)
        return ret;
 }
 
-static void counter_history_stat_update(const struct rdma_counter *counter)
+static void counter_history_stat_update(struct rdma_counter *counter)
 {
        struct ib_device *dev = counter->device;
        struct rdma_port_counter *port_counter;
@@ -212,6 +212,8 @@ static void counter_history_stat_update(const struct rdma_counter *counter)
        if (!port_counter->hstats)
                return;
 
+       rdma_counter_query_stats(counter);
+
        for (i = 0; i < counter->stats->num_counters; i++)
                port_counter->hstats->value[i] += counter->stats->value[i];
 }