[PATCH 10/24] ibtrs: server: statistics functions

Roman Pen
2018-02-02T14:08:50Z

This introduces set of functions used on server side to account
statistics of RDMA data sent/received.

Signed-off-by: Roman Pen <roman.penyaev@profitbricks.com>
Signed-off-by: Danil Kipnis <danil.kipnis@profitbricks.com>
Cc: Jack Wang <jinpu.wang@profitbricks.com>
---
drivers/infiniband/ulp/ibtrs/ibtrs-srv-stats.c | 110 +++++++++++++++++++++++++
1 file changed, 110 insertions(+)

diff --git a/drivers/infiniband/ulp/ibtrs/ibtrs-srv-stats.c b/drivers/infiniband/ulp/ibtrs/ibtrs-srv-stats.c
new file mode 100644
index 000000000000..441b07fdf44a
--- /dev/null
+++ b/drivers/infiniband/ulp/ibtrs/ibtrs-srv-stats.c
@@ -0,0 +1,110 @@
+/*
+ * InfiniBand Transport Layer
+ *
+ * Copyright (c) 2014 - 2017 ProfitBricks GmbH. All rights reserved.
+ * Authors: Fabian Holler <mail@fholler.de>
+ * Jack Wang <jinpu.wang@profitbricks.com>
+ * Kleber Souza <kleber.souza@profitbricks.com>
+ * Danil Kipnis <danil.kipnis@profitbricks.com>
+ * Roman Penyaev <roman.penyaev@profitbricks.com>
+ * Milind Dumbare <Milind.dumbare@gmail.com>
+ *
+ * Copyright (c) 2017 - 2018 ProfitBricks GmbH. All rights reserved.
+ * Authors: Danil Kipnis <danil.kipnis@profitbricks.com>
+ * Roman Penyaev <roman.penyaev@profitbricks.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see <http://www.gnu.org/licenses/>.
+ */
+
+#undef pr_fmt
+#define pr_fmt(fmt) KBUILD_MODNAME " L" __stringify(__LINE__) ": " fmt
+
+#include "ibtrs-srv.h"
+
+void ibtrs_srv_update_rdma_stats(struct ibtrs_srv_stats *s,
+ size_t size, int d)
+{
+ atomic64_inc(&s->rdma_stats.dir[d].cnt);
+ atomic64_add(size, &s->rdma_stats.dir[d].size_total);
+}
+
+void ibtrs_srv_update_wc_stats(struct ibtrs_srv_stats *s)
+{
+ atomic64_inc(&s->wc_comp.calls);
+ atomic64_inc(&s->wc_comp.total_wc_cnt);
+}
+
+int ibtrs_srv_reset_rdma_stats(struct ibtrs_srv_stats *stats, bool enable)
+{
+ if (enable) {
+ struct ibtrs_srv_stats_rdma_stats *r = &stats->rdma_stats;
+
+ memset(r, 0, sizeof(*r));
+ return 0;
+ }
+
+ return -EINVAL;
+}
+
+ssize_t ibtrs_srv_stats_rdma_to_str(struct ibtrs_srv_stats *stats,
+ char *page, size_t len)
+{
+ struct ibtrs_srv_stats_rdma_stats *r = &stats->rdma_stats;
+ struct ibtrs_srv_sess *sess;
+
+ sess = container_of(stats, typeof(*sess), stats);
+
+ return scnprintf(page, len, "%ld %ld %ld %ld %u\n",
+ atomic64_read(&r->dir[READ].cnt),
+ atomic64_read(&r->dir[READ].size_total),
+ atomic64_read(&r->dir[WRITE].cnt),
+ atomic64_read(&r->dir[WRITE].size_total),
+ atomic_read(&sess->ids_inflight));
+}
+
+int ibtrs_srv_reset_wc_completion_stats(struct ibtrs_srv_stats *stats,
+ bool enable)
+{
+ if (enable) {
+ memset(&stats->wc_comp, 0, sizeof(stats->wc_comp));
+ return 0;
+ }
+
+ return -EINVAL;
+}
+
+int ibtrs_srv_stats_wc_completion_to_str(struct ibtrs_srv_stats *stats,
+ char *buf, size_t len)
+{
+ return snprintf(buf, len, "%ld %ld\n",
+ atomic64_read(&stats->wc_comp.total_wc_cnt),
+ atomic64_read(&stats->wc_comp.calls));
+}
+
+ssize_t ibtrs_srv_reset_all_help(struct ibtrs_srv_stats *stats,
+ char *page, size_t len)
+{
+ return scnprintf(page, PAGE_SIZE, "echo 1 to reset all statistics\n");
+}
+
+int ibtrs_srv_reset_all_stats(struct ibtrs_srv_stats *stats, bool enable)
+{
+ if (enable) {
+ ibtrs_srv_reset_wc_completion_stats(stats, enable);
+ ibtrs_srv_reset_rdma_stats(stats, enable);
+ return 0;
+ }
+
+ return -EINVAL;
+}
--
2.13.1