On Tue, Jan 02, 2024 at 10:35:24AM -0500, Stefan Hajnoczi wrote:
> v3:
> - Rebase
> - Define bql_lock() macro on a single line [Akihiko Odaki]
> v2:
> - Rename APIs bql_*() [PeterX]
> - Spell out "Big QEMU Lock (BQL)" in doc comments [PeterX]
> - Rename "iolock" variables in hw/remote/mpqemu-link.c [Harsh]
> - Fix bql_auto_lock() indentation in Patch 2 [Ilya]
> - "with BQL taken" -> "with the BQL taken" [Philippe]
> - "under BQL" -> "under the BQL" [Philippe]
>
> The Big QEMU Lock ("BQL") has two other names: "iothread lock" and "QEMU global
> mutex". The term "iothread lock" is easily confused with the unrelated --object
> iothread (iothread.c).
>
> This series updates the code and documentation to consistently use "BQL". This
> makes the code easier to understand.
>
> Stefan Hajnoczi (5):
> system/cpus: rename qemu_mutex_lock_iothread() to bql_lock()
> qemu/main-loop: rename QEMU_IOTHREAD_LOCK_GUARD to BQL_LOCK_GUARD
> qemu/main-loop: rename qemu_cond_wait_iothread() to
> qemu_cond_wait_bql()
> Replace "iothread lock" with "BQL" in comments
> Rename "QEMU global mutex" to "BQL" in comments and docs
>
> docs/devel/multi-thread-tcg.rst | 7 +-
> docs/devel/qapi-code-gen.rst | 2 +-
> docs/devel/replay.rst | 2 +-
> docs/devel/reset.rst | 2 +-
> docs/devel/multiple-iothreads.txt | 14 ++--
> hw/display/qxl.h | 2 +-
> include/block/aio-wait.h | 2 +-
> include/block/blockjob.h | 6 +-
> include/exec/cpu-common.h | 2 +-
> include/exec/memory.h | 4 +-
> include/exec/ramblock.h | 2 +-
> include/io/task.h | 2 +-
> include/migration/register.h | 8 +-
> include/qemu/coroutine-core.h | 2 +-
> include/qemu/coroutine.h | 2 +-
> include/qemu/main-loop.h | 68 ++++++++-------
> include/qemu/thread.h | 2 +-
> target/arm/internals.h | 4 +-
> accel/accel-blocker.c | 10 +--
> accel/dummy-cpus.c | 8 +-
> accel/hvf/hvf-accel-ops.c | 4 +-
> accel/kvm/kvm-accel-ops.c | 4 +-
> accel/kvm/kvm-all.c | 22 ++---
> accel/tcg/cpu-exec.c | 26 +++---
> accel/tcg/cputlb.c | 20 ++---
> accel/tcg/tcg-accel-ops-icount.c | 6 +-
> accel/tcg/tcg-accel-ops-mttcg.c | 12 +--
> accel/tcg/tcg-accel-ops-rr.c | 18 ++--
> accel/tcg/tcg-accel-ops.c | 2 +-
> accel/tcg/translate-all.c | 2 +-
> cpu-common.c | 4 +-
> dump/dump.c | 4 +-
> hw/block/dataplane/virtio-blk.c | 8 +-
> hw/block/virtio-blk.c | 2 +-
> hw/core/cpu-common.c | 6 +-
> hw/display/virtio-gpu.c | 2 +-
> hw/i386/intel_iommu.c | 6 +-
> hw/i386/kvm/xen_evtchn.c | 30 +++----
> hw/i386/kvm/xen_gnttab.c | 2 +-
> hw/i386/kvm/xen_overlay.c | 2 +-
> hw/i386/kvm/xen_xenstore.c | 2 +-
> hw/intc/arm_gicv3_cpuif.c | 2 +-
> hw/intc/s390_flic.c | 18 ++--
> hw/mips/mips_int.c | 2 +-
> hw/misc/edu.c | 4 +-
> hw/misc/imx6_src.c | 2 +-
> hw/misc/imx7_src.c | 2 +-
> hw/net/xen_nic.c | 8 +-
> hw/ppc/pegasos2.c | 2 +-
> hw/ppc/ppc.c | 6 +-
> hw/ppc/spapr.c | 2 +-
> hw/ppc/spapr_events.c | 2 +-
> hw/ppc/spapr_rng.c | 4 +-
> hw/ppc/spapr_softmmu.c | 4 +-
> hw/remote/mpqemu-link.c | 22 ++---
> hw/remote/vfio-user-obj.c | 2 +-
> hw/s390x/s390-skeys.c | 2 +-
> hw/scsi/virtio-scsi-dataplane.c | 6 +-
> migration/block-dirty-bitmap.c | 14 ++--
> migration/block.c | 38 ++++-----
> migration/colo.c | 62 +++++++-------
> migration/dirtyrate.c | 12 +--
> migration/migration.c | 54 ++++++------
> migration/ram.c | 16 ++--
> net/tap.c | 2 +-
> replay/replay-internal.c | 2 +-
> semihosting/console.c | 8 +-
> stubs/iothread-lock.c | 6 +-
> system/cpu-throttle.c | 6 +-
> system/cpus.c | 55 +++++++------
> system/dirtylimit.c | 4 +-
> system/memory.c | 2 +-
> system/physmem.c | 14 ++--
> system/runstate.c | 2 +-
> system/watchpoint.c | 4 +-
> target/arm/arm-powerctl.c | 14 ++--
> target/arm/helper.c | 6 +-
> target/arm/hvf/hvf.c | 8 +-
> target/arm/kvm.c | 8 +-
> target/arm/ptw.c | 6 +-
> target/arm/tcg/helper-a64.c | 8 +-
> target/arm/tcg/m_helper.c | 6 +-
> target/arm/tcg/op_helper.c | 24 +++---
> target/arm/tcg/psci.c | 2 +-
> target/hppa/int_helper.c | 8 +-
> target/i386/hvf/hvf.c | 6 +-
> target/i386/kvm/hyperv.c | 4 +-
> target/i386/kvm/kvm.c | 28 +++----
> target/i386/kvm/xen-emu.c | 16 ++--
> target/i386/nvmm/nvmm-accel-ops.c | 6 +-
> target/i386/nvmm/nvmm-all.c | 20 ++---
> target/i386/tcg/sysemu/fpu_helper.c | 6 +-
> target/i386/tcg/sysemu/misc_helper.c | 4 +-
> target/i386/whpx/whpx-accel-ops.c | 6 +-
> target/i386/whpx/whpx-all.c | 24 +++---
> target/loongarch/csr_helper.c | 4 +-
> target/mips/kvm.c | 4 +-
> target/mips/tcg/sysemu/cp0_helper.c | 4 +-
> target/openrisc/sys_helper.c | 16 ++--
> target/ppc/excp_helper.c | 14 ++--
> target/ppc/helper_regs.c | 2 +-
> target/ppc/kvm.c | 4 +-
> target/ppc/misc_helper.c | 8 +-
> target/ppc/timebase_helper.c | 8 +-
> target/riscv/cpu_helper.c | 4 +-
> target/s390x/kvm/kvm.c | 4 +-
> target/s390x/tcg/misc_helper.c | 118 +++++++++++++--------------
> target/sparc/int32_helper.c | 2 +-
> target/sparc/int64_helper.c | 6 +-
> target/sparc/win_helper.c | 20 ++---
> target/xtensa/exc_helper.c | 8 +-
> ui/spice-core.c | 6 +-
> util/async.c | 2 +-
> util/main-loop.c | 8 +-
> util/qsp.c | 6 +-
> util/rcu.c | 16 ++--
> audio/coreaudio.m | 8 +-
> memory_ldst.c.inc | 18 ++--
> target/i386/hvf/README.md | 2 +-
> ui/cocoa.m | 56 ++++++-------
> 120 files changed, 641 insertions(+), 643 deletions(-)
>
> --
> 2.43.0
>
Thanks, applied to my block tree:
https://gitlab.com/stefanha/qemu/commits/block
Stefan