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Block layer patches

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- Fix blockdev-create with iothreads
 - Remove aio_disable_external() API
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Merge tag 'for-upstream' of https://repo.or.cz/qemu/kevin into staging

Block layer patches

- Fix blockdev-create with iothreads
- Remove aio_disable_external() API

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* tag 'for-upstream' of https://repo.or.cz/qemu/kevin: (32 commits)
  aio: remove aio_disable_external() API
  virtio: do not set is_external=true on host notifiers
  virtio-scsi: implement BlockDevOps->drained_begin()
  virtio-blk: implement BlockDevOps->drained_begin()
  virtio: make it possible to detach host notifier from any thread
  block/fuse: do not set is_external=true on FUSE fd
  block/export: don't require AioContext lock around blk_exp_ref/unref()
  block/export: rewrite vduse-blk drain code
  hw/xen: do not set is_external=true on evtchn fds
  xen-block: implement BlockDevOps->drained_begin()
  block: drain from main loop thread in bdrv_co_yield_to_drain()
  block: add blk_in_drain() API
  hw/xen: do not use aio_set_fd_handler(is_external=true) in xen_xenstore
  block/export: stop using is_external in vhost-user-blk server
  block/export: wait for vhost-user-blk requests when draining
  util/vhost-user-server: rename refcount to in_flight counter
  virtio-scsi: stop using aio_disable_external() during unplug
  virtio-scsi: avoid race between unplug and transport event
  hw/qdev: introduce qdev_is_realized() helper
  block-backend: split blk_do_set_aio_context()
  ...

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
Richard Henderson 2023-05-30 09:48:55 -07:00
commit f89f54d52b
70 changed files with 936 additions and 567 deletions
Download patch file Download diff file Expand all files Collapse all files

17
include/hw/qdev-core.h
View file

@ -1,6 +1,7 @@
#ifndef QDEV_CORE_H
#define QDEV_CORE_H
#include "qemu/atomic.h"
#include "qemu/queue.h"
#include "qemu/bitmap.h"
#include "qemu/rcu.h"
@ -168,9 +169,6 @@ typedef struct {
/**
* DeviceState:
* @realized: Indicates whether the device has been fully constructed.
* When accessed outside big qemu lock, must be accessed with
* qatomic_load_acquire()
* @reset: ResettableState for the device; handled by Resettable interface.
*
* This structure should not be accessed directly. We declare it here
@ -339,6 +337,19 @@ DeviceState *qdev_new(const char *name);
*/
DeviceState *qdev_try_new(const char *name);
/**
* qdev_is_realized:
* @dev: The device to check.
*
* May be called outside big qemu lock.
*
* Returns: %true% if the device has been fully constructed, %false% otherwise.
*/
static inline bool qdev_is_realized(DeviceState *dev)
{
return qatomic_load_acquire(&dev->realized);
}
/**
* qdev_realize: Realize @dev.
* @dev: device to realize

14
include/hw/scsi/scsi.h
View file

@ -133,6 +133,16 @@ struct SCSIBusInfo {
void (*save_request)(QEMUFile *f, SCSIRequest *req);
void *(*load_request)(QEMUFile *f, SCSIRequest *req);
void (*free_request)(SCSIBus *bus, void *priv);
/*
* Temporarily stop submitting new requests between drained_begin() and
* drained_end(). Called from the main loop thread with the BQL held.
*
* Implement these callbacks if request processing is triggered by a file
* descriptor like an EventNotifier. Otherwise set them to NULL.
*/
void (*drained_begin)(SCSIBus *bus);
void (*drained_end)(SCSIBus *bus);
};
#define TYPE_SCSI_BUS "SCSI"
@ -144,6 +154,8 @@ struct SCSIBus {
SCSISense unit_attention;
const SCSIBusInfo *info;
int drain_count; /* protected by BQL */
};
/**
@ -213,6 +225,8 @@ void scsi_req_cancel_complete(SCSIRequest *req);
void scsi_req_cancel(SCSIRequest *req);
void scsi_req_cancel_async(SCSIRequest *req, Notifier *notifier);
void scsi_req_retry(SCSIRequest *req);
void scsi_device_drained_begin(SCSIDevice *sdev);
void scsi_device_drained_end(SCSIDevice *sdev);
void scsi_device_purge_requests(SCSIDevice *sdev, SCSISense sense);
void scsi_device_set_ua(SCSIDevice *sdev, SCSISense sense);
void scsi_device_report_change(SCSIDevice *dev, SCSISense sense);