From 975af1b9f1811e113e1babd928ae70f8e4ebefb5 Mon Sep 17 00:00:00 2001
From: Stefan Hajnoczi <stefanha@redhat.com>
Date: Tue, 17 May 2022 09:28:19 +0100
Subject: [PATCH 13/16] virtio-scsi: clean up virtio_scsi_handle_cmd_vq()

RH-Author: Stefan Hajnoczi <stefanha@redhat.com>
RH-MergeRequest: 88: virtio-scsi: fix 100% CPU consumption with IOThreads
RH-Commit: [5/6] 27b0225783fa9bbb8fe5ee692bd3f0a888d49d07 (stefanha/centos-stream-qemu-kvm)
RH-Bugzilla: 2079347
RH-Acked-by: Miroslav Rezanina <mrezanin@redhat.com>
RH-Acked-by: Kevin Wolf <kwolf@redhat.com>
RH-Acked-by: Stefano Garzarella <sgarzare@redhat.com>

virtio_scsi_handle_cmd_vq() is only called from hw/scsi/virtio-scsi.c
now and its return value is no longer used. Remove the function
prototype from virtio-scsi.h and drop the return value.

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Message-id: 20220427143541.119567-6-stefanha@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
(cherry picked from commit ad482b57ef841b2d4883c5079d20ba44ff5e4b3e)
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
---
 hw/scsi/virtio-scsi.c           | 5 +----
 include/hw/virtio/virtio-scsi.h | 1 -
 2 files changed, 1 insertion(+), 5 deletions(-)

diff --git a/hw/scsi/virtio-scsi.c b/hw/scsi/virtio-scsi.c
index a47033d91d..df5ff8bab7 100644
--- a/hw/scsi/virtio-scsi.c
+++ b/hw/scsi/virtio-scsi.c
@@ -685,12 +685,11 @@ static void virtio_scsi_handle_cmd_req_submit(VirtIOSCSI *s, VirtIOSCSIReq *req)
     scsi_req_unref(sreq);
 }
 
-bool virtio_scsi_handle_cmd_vq(VirtIOSCSI *s, VirtQueue *vq)
+static void virtio_scsi_handle_cmd_vq(VirtIOSCSI *s, VirtQueue *vq)
 {
     VirtIOSCSIReq *req, *next;
     int ret = 0;
     bool suppress_notifications = virtio_queue_get_notification(vq);
-    bool progress = false;
 
     QTAILQ_HEAD(, VirtIOSCSIReq) reqs = QTAILQ_HEAD_INITIALIZER(reqs);
 
@@ -700,7 +699,6 @@ bool virtio_scsi_handle_cmd_vq(VirtIOSCSI *s, VirtQueue *vq)
         }
 
         while ((req = virtio_scsi_pop_req(s, vq))) {
-            progress = true;
             ret = virtio_scsi_handle_cmd_req_prepare(s, req);
             if (!ret) {
                 QTAILQ_INSERT_TAIL(&reqs, req, next);
@@ -725,7 +723,6 @@ bool virtio_scsi_handle_cmd_vq(VirtIOSCSI *s, VirtQueue *vq)
     QTAILQ_FOREACH_SAFE(req, &reqs, next, next) {
         virtio_scsi_handle_cmd_req_submit(s, req);
     }
-    return progress;
 }
 
 static void virtio_scsi_handle_cmd(VirtIODevice *vdev, VirtQueue *vq)
diff --git a/include/hw/virtio/virtio-scsi.h b/include/hw/virtio/virtio-scsi.h
index 44dc3b81ec..2497530064 100644
--- a/include/hw/virtio/virtio-scsi.h
+++ b/include/hw/virtio/virtio-scsi.h
@@ -151,7 +151,6 @@ void virtio_scsi_common_realize(DeviceState *dev,
                                 Error **errp);
 
 void virtio_scsi_common_unrealize(DeviceState *dev);
-bool virtio_scsi_handle_cmd_vq(VirtIOSCSI *s, VirtQueue *vq);
 void virtio_scsi_init_req(VirtIOSCSI *s, VirtQueue *vq, VirtIOSCSIReq *req);
 void virtio_scsi_free_req(VirtIOSCSIReq *req);
 void virtio_scsi_push_event(VirtIOSCSI *s, SCSIDevice *dev,
-- 
2.31.1