From ed2a638e89b322b9fbeb9260c63574779edf01cd Mon Sep 17 00:00:00 2001
From: Shuhei Matsumoto <shuhei.matsumoto.xt@hitachi.com>
Date: Wed, 20 Nov 2019 07:39:02 +0900
Subject: [PATCH] bdev/rpc: Add current ticks to bdev_get_iostat RPC

This is used to calculate more accurate interval between two
calls of bdev_get_iostat RPC.

Signed-off-by: Shuhei Matsumoto <shuhei.matsumoto.xt@hitachi.com>
Change-Id: Ib561b056bc8095aa23d04cb5f9ae6f558b157124
Reviewed-on: https://review.gerrithub.io/c/spdk/spdk/+/475167
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
Reviewed-by: GangCao <gang.cao@intel.com>
---
 doc/jsonrpc.md             | 1 +
 module/bdev/rpc/bdev_rpc.c | 1 +
 2 files changed, 2 insertions(+)

diff --git a/doc/jsonrpc.md b/doc/jsonrpc.md
index 41963fbda..106864984 100644
--- a/doc/jsonrpc.md
+++ b/doc/jsonrpc.md
@@ -515,6 +515,7 @@ Example response:
   "id": 1,
   "result": {
     "tick_rate": 2400000000,
+    "ticks": 2523538189523655,
     "threads": [
       {
         "name": "reactor_0",
diff --git a/module/bdev/rpc/bdev_rpc.c b/module/bdev/rpc/bdev_rpc.c
index 1c833085c..f23c7b256 100644
--- a/module/bdev/rpc/bdev_rpc.c
+++ b/module/bdev/rpc/bdev_rpc.c
@@ -175,6 +175,7 @@ spdk_rpc_bdev_get_iostat(struct spdk_jsonrpc_request *request,
 
 	spdk_json_write_object_begin(w);
 	spdk_json_write_named_uint64(w, "tick_rate", spdk_get_ticks_hz());
+	spdk_json_write_named_uint64(w, "ticks", spdk_get_ticks());
 
 	spdk_json_write_named_array_begin(w, "bdevs");