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> |
||
|---|---|---|
| .. | ||
| kvm | ||
| tcg | ||
| arch_dump.c | ||
| cpu_features_def.h | ||
| cpu_features_def.h.inc | ||
| cpu_features.c | ||
| cpu_features.h | ||
| cpu_models_sysemu.c | ||
| cpu_models_user.c | ||
| cpu_models.c | ||
| cpu_models.h | ||
| cpu-dump.c | ||
| cpu-param.h | ||
| cpu-qom.h | ||
| cpu-sysemu.c | ||
| cpu.c | ||
| cpu.h | ||
| diag.c | ||
| gdbstub.c | ||
| gen-features.c | ||
| helper.c | ||
| helper.h | ||
| interrupt.c | ||
| ioinst.c | ||
| Kconfig | ||
| machine.c | ||
| meson.build | ||
| mmu_helper.c | ||
| s390x-internal.h | ||
| sigp.c | ||
| trace-events | ||
| trace.h | ||