Am 12. Dezember 2023 15:39:00 UTC schrieb Stefan Hajnoczi <stefanha@xxxxxxxxxx>: >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 Duplicate "into" here. >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@xxxxxxxxxx> >Reviewed-by: Paul Durrant <paul@xxxxxxx> >Acked-by: Fabiano Rosas <farosas@xxxxxxx> >Acked-by: David Woodhouse <dwmw@xxxxxxxxxxxx> >Reviewed-by: Cédric Le Goater <clg@xxxxxxxx> >Acked-by: Peter Xu <peterx@xxxxxxxxxx> >Acked-by: Eric Farman <farman@xxxxxxxxxxxxx> >Reviewed-by: Harsh Prateek Bora <harshpb@xxxxxxxxxxxxx>
