This series adds a throttle block driver filter. Currently throttling is done
at the BlockBackend level. Using block driver interfaces we can move the
throttling to any point in the BDS graph using a throttle node which uses the
existing throttling code. This allows for potentially more complex
configurations (throttling at any point in the graph, chained filters)
There's also the question of how filter drivers affect the rest of the block
layer, especially live block jobs. This won't be tackled in this series though.
v2:
change QOM throttle group object name
print valid ranges for uint on error
move frees in throttle_group_obj_finalize()
split throttle_group_{set,get}()
add throttle_recurse_is_first_non_filter()
Manos Pitsidianakis (7):
block: move ThrottleGroup membership to ThrottleGroupMember
block: add aio_context field in ThrottleGroupMember
block: tidy ThrottleGroupMember initializations
block: convert ThrottleGroup to object with QOM
block: add throttle block filter driver
block: add BlockDevOptionsThrottle to QAPI
block: add throttle block filter driver interface tests
block/Makefile.objs | 1 +
block/block-backend.c | 61 ++--
block/qapi.c | 8 +-
block/throttle-groups.c | 715 ++++++++++++++++++++++++++++++----------
block/throttle.c | 395 ++++++++++++++++++++++
blockdev.c | 4 +-
include/block/throttle-groups.h | 47 ++-
include/qemu/throttle-options.h | 60 ++--
include/qemu/throttle.h | 3 +
include/sysemu/block-backend.h | 20 +-
qapi/block-core.json | 68 +++-
tests/qemu-iotests/184 | 237 +++++++++++++
tests/qemu-iotests/184.out | 319 ++++++++++++++++++
tests/qemu-iotests/group | 1 +
tests/test-throttle.c | 111 ++++---
util/throttle.c | 151 +++++++++
16 files changed, 1891 insertions(+), 310 deletions(-)
create mode 100644 block/throttle.c
create mode 100755 tests/qemu-iotests/184
create mode 100644 tests/qemu-iotests/184.out
--
2.11.0
