195801d700
The Big QEMU Lock (BQL) has many names and they are confusing. The actual QemuMutex variable is called qemu_global_mutex but it's commonly referred to as the BQL in discussions and some code comments. The locking APIs, however, are called qemu_mutex_lock_iothread() and qemu_mutex_unlock_iothread(). The "iothread" name is historic and comes from when the main thread was split into into KVM vcpu threads and the "iothread" (now called the main loop thread). I have contributed to the confusion myself by introducing a separate --object iothread, a separate concept unrelated to the BQL. The "iothread" name is no longer appropriate for the BQL. Rename the locking APIs to: - void bql_lock(void) - void bql_unlock(void) - bool bql_locked(void) There are more APIs with "iothread" in their names. Subsequent patches will rename them. There are also comments and documentation that will be updated in later patches. Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> Reviewed-by: Paul Durrant <paul@xen.org> Acked-by: Fabiano Rosas <farosas@suse.de> Acked-by: David Woodhouse <dwmw@amazon.co.uk> Reviewed-by: Cédric Le Goater <clg@kaod.org> Acked-by: Peter Xu <peterx@redhat.com> Acked-by: Eric Farman <farman@linux.ibm.com> Reviewed-by: Harsh Prateek Bora <harshpb@linux.ibm.com> Acked-by: Hyman Huang <yong.huang@smartx.com> Reviewed-by: Akihiko Odaki <akihiko.odaki@daynix.com> Message-id: 20240102153529.486531-2-stefanha@redhat.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> |
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| .. | ||
| bdrv-next-monitor-owned.c | ||
| blk-commit-all.c | ||
| blk-exp-close-all.c | ||
| blockdev-close-all-bdrv-states.c | ||
| change-state-handler.c | ||
| cmos.c | ||
| colo-compare.c | ||
| colo.c | ||
| cpu-get-clock.c | ||
| cpu-synchronize-state.c | ||
| cpus-get-virtual-clock.c | ||
| dump.c | ||
| error-printf.c | ||
| fdset.c | ||
| fw_cfg.c | ||
| gdbstub.c | ||
| get-vm-name.c | ||
| graph-lock.c | ||
| icount.c | ||
| io_uring.c | ||
| iothread-lock-block.c | ||
| iothread-lock.c | ||
| is-daemonized.c | ||
| isa-bus.c | ||
| linux-aio.c | ||
| memory_device.c | ||
| meson.build | ||
| migr-blocker.c | ||
| module-opts.c | ||
| monitor-core.c | ||
| monitor.c | ||
| pci-bus.c | ||
| physmem.c | ||
| qdev.c | ||
| qemu-timer-notify-cb.c | ||
| qmp-command-available.c | ||
| qmp-quit.c | ||
| qtest.c | ||
| ram-block.c | ||
| ramfb.c | ||
| replay-tools.c | ||
| replay.c | ||
| runstate-check.c | ||
| semihost-all.c | ||
| semihost.c | ||
| sysbus.c | ||
| target-get-monitor-def.c | ||
| target-monitor-defs.c | ||
| trace-control.c | ||
| usb-dev-stub.c | ||
| uuid.c | ||
| virtio-md-pci.c | ||
| vm-stop.c | ||
| vmstate.c | ||
| win32-kbd-hook.c | ||
| xen-hw-stub.c | ||