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[PATCH v4 00/13] new plugin argument passing scheme
From: |
Mahmoud Mandour |
Subject: |
[PATCH v4 00/13] new plugin argument passing scheme |
Date: |
Fri, 30 Jul 2021 15:58:04 +0200 |
Hello,
This series removes passing arguments to plugins through "arg=" since
it's redundant and reduces readability especially when the argument
itself is composed of a name and a value.
Also, passing arguments through "arg=" still works but is marked as
deprecated and will produce a deprecation warning.
Right now, the code for parsing the argument before passing it to the
plugin is unfortunately not so clean but that's mainly because "arg=" is
still supported.
At first, considering boolean parameters, those were not special to
plugins and QEMU did not complain about passing them in the form
"arg=bool_arg" even though that's considered a short-form boolean, which
is deprecated. As "arg" is removed, a deprecation warning is issued.
This is mitigated by making plugins aware of boolean arguments and
parses them through a newly exposed API, namely the `qapi_bool_parse`
function through a plugin API function. Now plugins expect boolean
parameters to be passed in the form that other parts of QEMU expect,
i.e. "bool_arg=[on|true|yes|off|false|no]".
Since we're still supporting "arg=arg_name", there are some assumptions
that I made that I think are suitable:
1. "arg=arg_name" will be passed to the plugin as "arg_name=on".
2. "arg=on" and "arg" will not be assumed to be the old way of
passing args. Instead, it will assume that the argument name is
"arg" and it's a boolean parameter. (will be passed to plugin
as "arg=on")
The docs are updated accordingly and a deprecation notice is put in the
deprecated.rst file.
Based-on: <20210722065428.134608-1-ma.mandourr@gmail.com>
However, the dependency is so light and it should only be in the patch
docs/tcg-plugins: new passing parameters scheme for cache docs
where it depends on
docs/devel/tcg-plugins: added cores arg to cache plugin
in the aforementioned series (conflict lies in the argument "cores=N" only.)
Patches that still need review:
plugins/api: added a boolean parsing plugin api
docs/deprecated: deprecate passing plugin args through `arg=`
plugins/hwprofile: adapt to the new plugin arguments scheme
v3 -> v4:
1. added Reviewed-by and Tested-By tags to commit messages of the
already-reviewed patches.
v2 -> v3:
1. Protected calling `qapi_bool_parse` by ensuring name & value are
not NULL.
2. Updated the docs for the hotpages plugin to include its arguments
3. Typo in tests/plugins/mem (hadrr -> haddr)
4. Reword the deprecation entry in deprecated.rst
Mahmoud Mandour (13):
plugins: allow plugin arguments to be passed directly
plugins/api: added a boolean parsing plugin api
plugins/hotpages: introduce sortby arg and parsed bool args correctly
plugins/hotblocks: Added correct boolean argument parsing
plugins/lockstep: make socket path not positional & parse bool arg
plugins/hwprofile: adapt to the new plugin arguments scheme
plugins/howvec: adapting to the new argument passing scheme
docs/tcg-plugins: new passing parameters scheme for cache docs
tests/plugins/bb: adapt to the new arg passing scheme
tests/plugins/insn: made arg inline not positional and parse it as
bool
tests/plugins/mem: introduce "track" arg and make args not positional
tests/plugins/syscalls: adhere to new arg-passing scheme
docs/deprecated: deprecate passing plugin args through `arg=`
contrib/plugins/hotblocks.c | 14 ++++++++--
contrib/plugins/hotpages.c | 30 ++++++++++++++-------
contrib/plugins/howvec.c | 27 +++++++++++++------
contrib/plugins/hwprofile.c | 39 ++++++++++++++++++---------
contrib/plugins/lockstep.c | 31 +++++++++++++++-------
docs/devel/tcg-plugins.rst | 53 ++++++++++++++++++++++++-------------
docs/system/deprecated.rst | 7 +++++
include/qemu/qemu-plugin.h | 13 +++++++++
linux-user/main.c | 2 +-
plugins/api.c | 5 ++++
plugins/loader.c | 24 ++++++++++++++---
qemu-options.hx | 9 +++----
tests/plugin/bb.c | 15 ++++++++---
tests/plugin/insn.c | 14 ++++++++--
tests/plugin/mem.c | 47 +++++++++++++++++++-------------
tests/plugin/syscall.c | 23 +++++++++++-----
16 files changed, 252 insertions(+), 101 deletions(-)
--
2.25.1
- [PATCH v4 00/13] new plugin argument passing scheme,
Mahmoud Mandour <=
- [PATCH v4 01/13] plugins: allow plugin arguments to be passed directly, Mahmoud Mandour, 2021/07/30
- [PATCH v4 02/13] plugins/api: added a boolean parsing plugin api, Mahmoud Mandour, 2021/07/30
- [PATCH v4 03/13] plugins/hotpages: introduce sortby arg and parsed bool args correctly, Mahmoud Mandour, 2021/07/30
- [PATCH v4 04/13] plugins/hotblocks: Added correct boolean argument parsing, Mahmoud Mandour, 2021/07/30
- [PATCH v4 05/13] plugins/lockstep: make socket path not positional & parse bool arg, Mahmoud Mandour, 2021/07/30
- [PATCH v4 06/13] plugins/hwprofile: adapt to the new plugin arguments scheme, Mahmoud Mandour, 2021/07/30
- [PATCH v4 07/13] plugins/howvec: adapting to the new argument passing scheme, Mahmoud Mandour, 2021/07/30
- [PATCH v4 08/13] docs/tcg-plugins: new passing parameters scheme for cache docs, Mahmoud Mandour, 2021/07/30
- [PATCH v4 09/13] tests/plugins/bb: adapt to the new arg passing scheme, Mahmoud Mandour, 2021/07/30
- [PATCH v4 10/13] tests/plugins/insn: made arg inline not positional and parse it as bool, Mahmoud Mandour, 2021/07/30