You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
169 lines
5.5 KiB
169 lines
5.5 KiB
From 6603f216dbc07a1d221b1665409cfec6cc9960e2 Mon Sep 17 00:00:00 2001
|
|
From: Stefan Hajnoczi <stefanha@redhat.com>
|
|
Date: Tue, 17 May 2022 09:28:26 +0100
|
|
Subject: [PATCH 14/16] virtio-scsi: move request-related items from .h to .c
|
|
|
|
RH-Author: Stefan Hajnoczi <stefanha@redhat.com>
|
|
RH-MergeRequest: 88: virtio-scsi: fix 100% CPU consumption with IOThreads
|
|
RH-Commit: [6/6] ecdf5289abd04062c85c5ed8e577a5249684a3b0 (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>
|
|
|
|
There is no longer a need to expose the request and related APIs in
|
|
virtio-scsi.h since there are no callers outside virtio-scsi.c.
|
|
|
|
Note the block comment in VirtIOSCSIReq has been adjusted to meet the
|
|
coding style.
|
|
|
|
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
|
|
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
|
|
Message-id: 20220427143541.119567-7-stefanha@redhat.com
|
|
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
|
|
(cherry picked from commit 3dc584abeef0e1277c2de8c1c1974cb49444eb0a)
|
|
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
|
|
---
|
|
hw/scsi/virtio-scsi.c | 45 ++++++++++++++++++++++++++++++---
|
|
include/hw/virtio/virtio-scsi.h | 40 -----------------------------
|
|
2 files changed, 41 insertions(+), 44 deletions(-)
|
|
|
|
diff --git a/hw/scsi/virtio-scsi.c b/hw/scsi/virtio-scsi.c
|
|
index df5ff8bab7..2450c9438c 100644
|
|
--- a/hw/scsi/virtio-scsi.c
|
|
+++ b/hw/scsi/virtio-scsi.c
|
|
@@ -29,6 +29,43 @@
|
|
#include "hw/virtio/virtio-access.h"
|
|
#include "trace.h"
|
|
|
|
+typedef struct VirtIOSCSIReq {
|
|
+ /*
|
|
+ * Note:
|
|
+ * - fields up to resp_iov are initialized by virtio_scsi_init_req;
|
|
+ * - fields starting at vring are zeroed by virtio_scsi_init_req.
|
|
+ */
|
|
+ VirtQueueElement elem;
|
|
+
|
|
+ VirtIOSCSI *dev;
|
|
+ VirtQueue *vq;
|
|
+ QEMUSGList qsgl;
|
|
+ QEMUIOVector resp_iov;
|
|
+
|
|
+ union {
|
|
+ /* Used for two-stage request submission */
|
|
+ QTAILQ_ENTRY(VirtIOSCSIReq) next;
|
|
+
|
|
+ /* Used for cancellation of request during TMFs */
|
|
+ int remaining;
|
|
+ };
|
|
+
|
|
+ SCSIRequest *sreq;
|
|
+ size_t resp_size;
|
|
+ enum SCSIXferMode mode;
|
|
+ union {
|
|
+ VirtIOSCSICmdResp cmd;
|
|
+ VirtIOSCSICtrlTMFResp tmf;
|
|
+ VirtIOSCSICtrlANResp an;
|
|
+ VirtIOSCSIEvent event;
|
|
+ } resp;
|
|
+ union {
|
|
+ VirtIOSCSICmdReq cmd;
|
|
+ VirtIOSCSICtrlTMFReq tmf;
|
|
+ VirtIOSCSICtrlANReq an;
|
|
+ } req;
|
|
+} VirtIOSCSIReq;
|
|
+
|
|
static inline int virtio_scsi_get_lun(uint8_t *lun)
|
|
{
|
|
return ((lun[2] << 8) | lun[3]) & 0x3FFF;
|
|
@@ -45,7 +82,7 @@ static inline SCSIDevice *virtio_scsi_device_get(VirtIOSCSI *s, uint8_t *lun)
|
|
return scsi_device_get(&s->bus, 0, lun[1], virtio_scsi_get_lun(lun));
|
|
}
|
|
|
|
-void virtio_scsi_init_req(VirtIOSCSI *s, VirtQueue *vq, VirtIOSCSIReq *req)
|
|
+static void virtio_scsi_init_req(VirtIOSCSI *s, VirtQueue *vq, VirtIOSCSIReq *req)
|
|
{
|
|
VirtIODevice *vdev = VIRTIO_DEVICE(s);
|
|
const size_t zero_skip =
|
|
@@ -58,7 +95,7 @@ void virtio_scsi_init_req(VirtIOSCSI *s, VirtQueue *vq, VirtIOSCSIReq *req)
|
|
memset((uint8_t *)req + zero_skip, 0, sizeof(*req) - zero_skip);
|
|
}
|
|
|
|
-void virtio_scsi_free_req(VirtIOSCSIReq *req)
|
|
+static void virtio_scsi_free_req(VirtIOSCSIReq *req)
|
|
{
|
|
qemu_iovec_destroy(&req->resp_iov);
|
|
qemu_sglist_destroy(&req->qsgl);
|
|
@@ -801,8 +838,8 @@ static void virtio_scsi_reset(VirtIODevice *vdev)
|
|
s->events_dropped = false;
|
|
}
|
|
|
|
-void virtio_scsi_push_event(VirtIOSCSI *s, SCSIDevice *dev,
|
|
- uint32_t event, uint32_t reason)
|
|
+static void virtio_scsi_push_event(VirtIOSCSI *s, SCSIDevice *dev,
|
|
+ uint32_t event, uint32_t reason)
|
|
{
|
|
VirtIOSCSICommon *vs = VIRTIO_SCSI_COMMON(s);
|
|
VirtIOSCSIReq *req;
|
|
diff --git a/include/hw/virtio/virtio-scsi.h b/include/hw/virtio/virtio-scsi.h
|
|
index 2497530064..abdda2cbd0 100644
|
|
--- a/include/hw/virtio/virtio-scsi.h
|
|
+++ b/include/hw/virtio/virtio-scsi.h
|
|
@@ -94,42 +94,6 @@ struct VirtIOSCSI {
|
|
uint32_t host_features;
|
|
};
|
|
|
|
-typedef struct VirtIOSCSIReq {
|
|
- /* Note:
|
|
- * - fields up to resp_iov are initialized by virtio_scsi_init_req;
|
|
- * - fields starting at vring are zeroed by virtio_scsi_init_req.
|
|
- * */
|
|
- VirtQueueElement elem;
|
|
-
|
|
- VirtIOSCSI *dev;
|
|
- VirtQueue *vq;
|
|
- QEMUSGList qsgl;
|
|
- QEMUIOVector resp_iov;
|
|
-
|
|
- union {
|
|
- /* Used for two-stage request submission */
|
|
- QTAILQ_ENTRY(VirtIOSCSIReq) next;
|
|
-
|
|
- /* Used for cancellation of request during TMFs */
|
|
- int remaining;
|
|
- };
|
|
-
|
|
- SCSIRequest *sreq;
|
|
- size_t resp_size;
|
|
- enum SCSIXferMode mode;
|
|
- union {
|
|
- VirtIOSCSICmdResp cmd;
|
|
- VirtIOSCSICtrlTMFResp tmf;
|
|
- VirtIOSCSICtrlANResp an;
|
|
- VirtIOSCSIEvent event;
|
|
- } resp;
|
|
- union {
|
|
- VirtIOSCSICmdReq cmd;
|
|
- VirtIOSCSICtrlTMFReq tmf;
|
|
- VirtIOSCSICtrlANReq an;
|
|
- } req;
|
|
-} VirtIOSCSIReq;
|
|
-
|
|
static inline void virtio_scsi_acquire(VirtIOSCSI *s)
|
|
{
|
|
if (s->ctx) {
|
|
@@ -151,10 +115,6 @@ void virtio_scsi_common_realize(DeviceState *dev,
|
|
Error **errp);
|
|
|
|
void virtio_scsi_common_unrealize(DeviceState *dev);
|
|
-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,
|
|
- uint32_t event, uint32_t reason);
|
|
|
|
void virtio_scsi_dataplane_setup(VirtIOSCSI *s, Error **errp);
|
|
int virtio_scsi_dataplane_start(VirtIODevice *s);
|
|
--
|
|
2.31.1
|
|
|