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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accounting.h | ||
aio_task.h | ||
aio-wait.h | ||
aio.h | ||
block_backup.h | ||
block_int-common.h | ||
block_int-global-state.h | ||
block_int-io.h | ||
block_int.h | ||
block-common.h | ||
block-copy.h | ||
block-global-state.h | ||
block-hmp-cmds.h | ||
block-io.h | ||
block.h | ||
blockjob_int.h | ||
blockjob.h | ||
dirty-bitmap.h | ||
export.h | ||
fuse.h | ||
graph-lock.h | ||
nbd.h | ||
nvme.h | ||
qapi.h | ||
qdict.h | ||
raw-aio.h | ||
replication.h | ||
reqlist.h | ||
snapshot.h | ||
thread-pool.h | ||
throttle-groups.h | ||
ufs.h | ||
write-threshold.h |