41abca8c39
Introduce a new API for thread-local blk_io_plug() that does not traverse the block graph. The goal is to make blk_io_plug() multi-queue friendly. Instead of having block drivers track whether or not we're in a plugged section, provide an API that allows them to defer a function call until we're unplugged: blk_io_plug_call(fn, opaque). If blk_io_plug_call() is called multiple times with the same fn/opaque pair, then fn() is only called once at the end of the function - resulting in batching. This patch introduces the API and changes blk_io_plug()/blk_io_unplug(). blk_io_plug()/blk_io_unplug() no longer require a BlockBackend argument because the plug state is now thread-local. Later patches convert block drivers to blk_io_plug_call() and then we can finally remove .bdrv_co_io_plug() once all block drivers have been converted. Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Stefano Garzarella <sgarzare@redhat.com> Acked-by: Kevin Wolf <kwolf@redhat.com> Message-id: 20230530180959.1108766-2-stefanha@redhat.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
168 lines
4.5 KiB
Meson
168 lines
4.5 KiB
Meson
block_ss.add(genh)
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block_ss.add(files(
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'accounting.c',
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'aio_task.c',
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'amend.c',
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'backup.c',
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'copy-before-write.c',
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'blkdebug.c',
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'blklogwrites.c',
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'blkverify.c',
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'block-backend.c',
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'block-copy.c',
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'graph-lock.c',
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'commit.c',
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'copy-on-read.c',
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'preallocate.c',
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'progress_meter.c',
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'create.c',
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'crypto.c',
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'dirty-bitmap.c',
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'filter-compress.c',
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'io.c',
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'mirror.c',
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'nbd.c',
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'null.c',
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'plug.c',
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'qapi.c',
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'qcow2-bitmap.c',
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'qcow2-cache.c',
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'qcow2-cluster.c',
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'qcow2-refcount.c',
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'qcow2-snapshot.c',
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'qcow2-threads.c',
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'qcow2.c',
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'quorum.c',
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'raw-format.c',
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'reqlist.c',
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'snapshot.c',
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'snapshot-access.c',
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'throttle-groups.c',
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'throttle.c',
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'write-threshold.c',
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), zstd, zlib, gnutls)
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softmmu_ss.add(when: 'CONFIG_TCG', if_true: files('blkreplay.c'))
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softmmu_ss.add(files('block-ram-registrar.c'))
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if get_option('qcow1').allowed()
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block_ss.add(files('qcow.c'))
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endif
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if get_option('vdi').allowed()
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block_ss.add(files('vdi.c'))
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endif
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if get_option('vhdx').allowed()
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block_ss.add(files(
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'vhdx-endian.c',
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'vhdx-log.c',
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'vhdx.c'
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))
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endif
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if get_option('vmdk').allowed()
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block_ss.add(files('vmdk.c'))
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endif
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if get_option('vpc').allowed()
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block_ss.add(files('vpc.c'))
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endif
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if get_option('cloop').allowed()
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block_ss.add(files('cloop.c'))
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endif
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if get_option('bochs').allowed()
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block_ss.add(files('bochs.c'))
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endif
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if get_option('vvfat').allowed()
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block_ss.add(files('vvfat.c'))
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endif
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if get_option('dmg').allowed()
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block_ss.add(files('dmg.c'))
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endif
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if get_option('qed').allowed()
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block_ss.add(files(
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'qed-check.c',
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'qed-cluster.c',
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'qed-l2-cache.c',
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'qed-table.c',
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'qed.c',
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))
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endif
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if get_option('parallels').allowed()
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block_ss.add(files('parallels.c', 'parallels-ext.c'))
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endif
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block_ss.add(when: 'CONFIG_WIN32', if_true: files('file-win32.c', 'win32-aio.c'))
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block_ss.add(when: 'CONFIG_POSIX', if_true: [files('file-posix.c'), coref, iokit])
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block_ss.add(when: libiscsi, if_true: files('iscsi-opts.c'))
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block_ss.add(when: 'CONFIG_LINUX', if_true: files('nvme.c'))
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if get_option('replication').allowed()
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block_ss.add(files('replication.c'))
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endif
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block_ss.add(when: libaio, if_true: files('linux-aio.c'))
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block_ss.add(when: linux_io_uring, if_true: files('io_uring.c'))
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block_modules = {}
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modsrc = []
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foreach m : [
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[blkio, 'blkio', files('blkio.c')],
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[curl, 'curl', files('curl.c')],
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[glusterfs, 'gluster', files('gluster.c')],
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[libiscsi, 'iscsi', [files('iscsi.c'), libm]],
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[libnfs, 'nfs', files('nfs.c')],
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[libssh, 'ssh', files('ssh.c')],
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[rbd, 'rbd', files('rbd.c')],
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]
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if m[0].found()
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module_ss = ss.source_set()
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module_ss.add(when: m[0], if_true: m[2])
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if enable_modules
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modsrc += module_ss.all_sources()
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endif
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block_modules += {m[1] : module_ss}
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endif
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endforeach
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# those are not exactly regular block modules, so treat them apart
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if get_option('dmg').allowed()
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foreach m : [
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[liblzfse, 'dmg-lzfse', liblzfse, 'dmg-lzfse.c'],
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[libbzip2, 'dmg-bz2', [glib, libbzip2], 'dmg-bz2.c']
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]
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if m[0].found()
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module_ss = ss.source_set()
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module_ss.add(when: m[2], if_true: files(m[3]))
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block_modules += {m[1] : module_ss}
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endif
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endforeach
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endif
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module_block_py = find_program('../scripts/modules/module_block.py')
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module_block_h = custom_target('module_block.h',
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output: 'module_block.h',
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input: modsrc,
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command: [module_block_py, '@OUTPUT0@', modsrc])
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block_ss.add(module_block_h)
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wrapper_py = find_program('../scripts/block-coroutine-wrapper.py')
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block_gen_c = custom_target('block-gen.c',
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output: 'block-gen.c',
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input: files(
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'../include/block/block-io.h',
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'../include/block/dirty-bitmap.h',
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'../include/block/block_int-io.h',
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'../include/block/block-global-state.h',
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'../include/sysemu/block-backend-global-state.h',
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'../include/sysemu/block-backend-io.h',
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'coroutines.h'
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),
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command: [wrapper_py, '@OUTPUT@', '@INPUT@'])
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block_ss.add(block_gen_c)
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block_ss.add(files('stream.c'))
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softmmu_ss.add(files('qapi-sysemu.c'))
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subdir('export')
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subdir('monitor')
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modules += {'block': block_modules}
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