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[PATCH v2 0/3] qapi: Move RTC_CHANGE back out of target schema
From: |
Peter Maydell |
Subject: |
[PATCH v2 0/3] qapi: Move RTC_CHANGE back out of target schema |
Date: |
Mon, 21 Feb 2022 19:21:20 +0000 |
This patchset moves RTC_CHANGE back to misc.json, effectively
reverting commit 183e4281a30962, which moved the RTC_CHANGE event to
the target schema. That change was an attempt to make the event
target-specific to improve introspection, but the event isn't really
target-specific: it's machine or device specific. Putting RTC_CHANGE
in the target schema with an ifdef list reduces maintainability (by
adding an if: list with a long list of targets that needs to be
manually updated as architectures are added or removed or as new
devices gain the RTC_CHANGE functionality) and increases compile time
(by preventing RTC devices which emit the event from being "compile
once" rather than "compile once per target", because
qapi-events-misc-target.h uses TARGET_* ifdefs, which are poisoned in
"compile once" files.)
Patch 2 fixes some minor documentation issues for the RTC_CHANGE
event, noticed during development of the patchset.
Patch 3 makes the pl031 a build-once file again, which was the
initial motivation for the series.
Changes v1->v2:
* patch 1 needs to change the #include line for pl031.c, now that
the change to make that device emit RTC_CHANGE has landed upstream
* patch 2 now also notes in the RTC_CHANGE documentation that
not all devices/systems will emit the event (suggested by Markus)
* patch 3 is new
My default assumption is that this series will go in via the
qapi tree; let me know if you'd prefer me to take it via
target-arm instead.
thanks
-- PMM
Peter Maydell (3):
qapi: Move RTC_CHANGE back out of target schema
qapi: Document some missing details of RTC_CHANGE event
hw/rtc: Compile pl031 once-only
qapi/misc-target.json | 33 ---------------------------------
qapi/misc.json | 24 ++++++++++++++++++++++++
hw/ppc/spapr_rtc.c | 2 +-
hw/rtc/mc146818rtc.c | 2 +-
hw/rtc/pl031.c | 2 +-
hw/rtc/meson.build | 2 +-
6 files changed, 28 insertions(+), 37 deletions(-)
--
2.25.1
- [PATCH v2 0/3] qapi: Move RTC_CHANGE back out of target schema,
Peter Maydell <=
- [PATCH v2 1/3] qapi: Move RTC_CHANGE back out of target schema, Peter Maydell, 2022/02/21
- [PATCH v2 2/3] qapi: Document some missing details of RTC_CHANGE event, Peter Maydell, 2022/02/21
- [PATCH v2 3/3] hw/rtc: Compile pl031 once-only, Peter Maydell, 2022/02/21
- Re: [PATCH v2 0/3] qapi: Move RTC_CHANGE back out of target schema, Eric Auger, 2022/02/21
- [PATCH RFC 4/4] rtc: Have event RTC_CHANGE identify the RTC by QOM path, Markus Armbruster, 2022/02/22