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authorStefan Hajnoczi <stefanha@redhat.com>2024-01-02 10:35:29 -0500
committerStefan Hajnoczi <stefanha@redhat.com>2024-01-08 10:45:43 -0500
commit0b2675c473f68f13bc5ca1dd1c43ce421542e7b8 (patch)
tree4d9b904b4b95e24558cf30f710dc6f899544b69b /hw
parenta4a411fbaf95b5712b30de6e65f37ff0aa6cb142 (diff)
downloadfocaccia-qemu-0b2675c473f68f13bc5ca1dd1c43ce421542e7b8.tar.gz
focaccia-qemu-0b2675c473f68f13bc5ca1dd1c43ce421542e7b8.zip
Rename "QEMU global mutex" to "BQL" in comments and docs
The term "QEMU global mutex" is identical to the more widely used Big
QEMU Lock ("BQL"). Update the code comments and documentation to use
"BQL" instead of "QEMU global mutex".

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Acked-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Paul Durrant <paul@xen.org>
Reviewed-by: Akihiko Odaki <akihiko.odaki@daynix.com>
Reviewed-by: Cédric Le Goater <clg@kaod.org>
Reviewed-by: Harsh Prateek Bora <harshpb@linux.ibm.com>
Message-id: 20240102153529.486531-6-stefanha@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Diffstat (limited to 'hw')
-rw-r--r--hw/block/dataplane/virtio-blk.c8
-rw-r--r--hw/block/virtio-blk.c2
-rw-r--r--hw/scsi/virtio-scsi-dataplane.c6
3 files changed, 8 insertions, 8 deletions
diff --git a/hw/block/dataplane/virtio-blk.c b/hw/block/dataplane/virtio-blk.c
index 97a302cf49..ba22732497 100644
--- a/hw/block/dataplane/virtio-blk.c
+++ b/hw/block/dataplane/virtio-blk.c
@@ -84,7 +84,7 @@ apply_vq_mapping(IOThreadVirtQueueMappingList *iothread_vq_mapping_list,
     }
 }
 
-/* Context: QEMU global mutex held */
+/* Context: BQL held */
 bool virtio_blk_data_plane_create(VirtIODevice *vdev, VirtIOBlkConf *conf,
                                   VirtIOBlockDataPlane **dataplane,
                                   Error **errp)
@@ -148,7 +148,7 @@ bool virtio_blk_data_plane_create(VirtIODevice *vdev, VirtIOBlkConf *conf,
     return true;
 }
 
-/* Context: QEMU global mutex held */
+/* Context: BQL held */
 void virtio_blk_data_plane_destroy(VirtIOBlockDataPlane *s)
 {
     VirtIOBlock *vblk;
@@ -179,7 +179,7 @@ void virtio_blk_data_plane_destroy(VirtIOBlockDataPlane *s)
     g_free(s);
 }
 
-/* Context: QEMU global mutex held */
+/* Context: BQL held */
 int virtio_blk_data_plane_start(VirtIODevice *vdev)
 {
     VirtIOBlock *vblk = VIRTIO_BLK(vdev);
@@ -310,7 +310,7 @@ static void virtio_blk_data_plane_stop_vq_bh(void *opaque)
     virtio_queue_host_notifier_read(host_notifier);
 }
 
-/* Context: QEMU global mutex held */
+/* Context: BQL held */
 void virtio_blk_data_plane_stop(VirtIODevice *vdev)
 {
     VirtIOBlock *vblk = VIRTIO_BLK(vdev);
diff --git a/hw/block/virtio-blk.c b/hw/block/virtio-blk.c
index 315b7b364c..b7a344ca97 100644
--- a/hw/block/virtio-blk.c
+++ b/hw/block/virtio-blk.c
@@ -1539,7 +1539,7 @@ static void virtio_blk_resize(void *opaque)
     VirtIODevice *vdev = VIRTIO_DEVICE(opaque);
 
     /*
-     * virtio_notify_config() needs to acquire the global mutex,
+     * virtio_notify_config() needs to acquire the BQL,
      * so it can't be called from an iothread. Instead, schedule
      * it to be run in the main context BH.
      */
diff --git a/hw/scsi/virtio-scsi-dataplane.c b/hw/scsi/virtio-scsi-dataplane.c
index 135e23fe54..2806a121b2 100644
--- a/hw/scsi/virtio-scsi-dataplane.c
+++ b/hw/scsi/virtio-scsi-dataplane.c
@@ -20,7 +20,7 @@
 #include "scsi/constants.h"
 #include "hw/virtio/virtio-bus.h"
 
-/* Context: QEMU global mutex held */
+/* Context: BQL held */
 void virtio_scsi_dataplane_setup(VirtIOSCSI *s, Error **errp)
 {
     VirtIOSCSICommon *vs = VIRTIO_SCSI_COMMON(s);
@@ -93,7 +93,7 @@ static void virtio_scsi_dataplane_stop_bh(void *opaque)
     }
 }
 
-/* Context: QEMU global mutex held */
+/* Context: BQL held */
 int virtio_scsi_dataplane_start(VirtIODevice *vdev)
 {
     int i;
@@ -185,7 +185,7 @@ fail_guest_notifiers:
     return -ENOSYS;
 }
 
-/* Context: QEMU global mutex held */
+/* Context: BQL held */
 void virtio_scsi_dataplane_stop(VirtIODevice *vdev)
 {
     BusState *qbus = qdev_get_parent_bus(DEVICE(vdev));