From ebb01d2b9c070c33ca3090029c16394e998ab3f1 Mon Sep 17 00:00:00 2001
From: Jim Harris <james.r.harris@intel.com>
Date: Thu, 9 Dec 2021 20:25:21 +0000
Subject: [PATCH] bpf: use map in nvmf_path.bt

Modify nvmf_path.bt to collect the (ip, port)
tuples in a map, and then print the map every
second. This generates a lot less output than
printing the path for every single I/O.

Signed-off-by: Jim Harris <james.r.harris@intel.com>
Change-Id: I8f655ed7a4558735f51ddf1169134fbf6950cc1c
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/10616
Community-CI: Broadcom CI <spdk-ci.pdl@broadcom.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
Reviewed-by: Shuhei Matsumoto <smatsumoto@nvidia.com>
Reviewed-by: Monica Kenguva <monica.kenguva@intel.com>
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
---
 scripts/bpf/nvmf_path.bt | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/scripts/bpf/nvmf_path.bt b/scripts/bpf/nvmf_path.bt
index 5452f6722..e67e9c63b 100644
--- a/scripts/bpf/nvmf_path.bt
+++ b/scripts/bpf/nvmf_path.bt
@@ -1,3 +1,8 @@
 usdt:__EXE__:nvmf_request_io_exec_path {
-	printf("traddr:%s trsvcid:%s\n", str(arg2), str(arg3));
+	@path[str(arg2), str(arg3)] = count();
+}
+
+interval:s:1 {
+	print(@path);
+	clear(@path);
 }