From 971451a84a0fd01f956025af9908a3e8b624263e Mon Sep 17 00:00:00 2001
From: Michal Berger <michallinuxstuff@gmail.com>
Date: Fri, 29 Apr 2022 11:27:48 +0200
Subject: [PATCH] perf/vhost: Allow to add extra fio config through
 $fio_extra_conf

$fio_extra_conf can either point at an existing file or be an
attached stdin the fio_conf() should read from.

Signed-off-by: Michal Berger <michallinuxstuff@gmail.com>
Change-Id: If902262b0100fb056491928b3f667ab15e6e0024
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/12429
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Karol Latecki <karol.latecki@intel.com>
Reviewed-by: Tomasz Zawadzki <tomasz.zawadzki@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
---
 scripts/perf/vhost/run_vhost_test.sh | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/scripts/perf/vhost/run_vhost_test.sh b/scripts/perf/vhost/run_vhost_test.sh
index 6452f8ab7..4093fe56d 100755
--- a/scripts/perf/vhost/run_vhost_test.sh
+++ b/scripts/perf/vhost/run_vhost_test.sh
@@ -5,6 +5,9 @@ rootdir=$(readlink -f "$curdir/../../../")
 
 source "$rootdir/test/vhost/common.sh"
 
+# Allow for the fio_conf() to slurp extra config from the stdin.
+exec {fio_extra_conf}<&0
+
 fio_conf() {
 	cat <<- FIO
 		[global]
@@ -25,6 +28,14 @@ fio_conf() {
 		FIO_URING
 	fi
 
+	if [[ -e $fio_extra_conf ]]; then
+		# Overriden through cmdline|env
+		cat "$fio_extra_conf"
+	elif [[ ! -t $fio_extra_conf ]]; then
+		# Attached to stdin
+		cat <&"$fio_extra_conf"
+	fi
+
 	cat <<- FIO
 		[perf_test]
 		stonewall