Pino Toscano [Sat, 22 Jun 2024 17:55:15 +0000 (19:55 +0200)]
[PATCH] IPC: add PATH_MAX-less fallback definition for MAX_PATH
Define MAX_PATH also when PATH_MAX is not defined (e.g on GNU/Hurd).
MAX_PATH is Windows constant, and it is used in this file only in a
code path for Windows; because of this, the static fallback define
should be good enough.
Change-Id: Ic1b9fee3b62505f86aa8ec89bbd20493bfe1f67c Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Gbp-Pq: Name upstream_IPC-add-PATH_MAX-less-fallback-definition-for-MAX_PA.patch
[PATCH] XCB: Remove extra xcb_randr_select_input() calls
This fixes high CPU usage in kwin.
If there is a ConfigureNotify event for the root window, QtXCB will
call xcb_randr_select_input(). The problem is that the X server may send
an output change event in response to xcb_randr_select_input().
When kwin sees that output change event, it will process the event and
it can update its override redirect windows, which can produce a few
ConfigureNotify events for the root window and make kwin get stuck in an
update loop.
Since the QXcbConnection constructor already subscribes to the RandR
events, these xcb_randr_select_input() function calls can be removed.
Also, `true` is not a valid argument for xcb_randr_select_input(). It
expects a mask of events to listen. For what it's worth, `true`
corresponds to XCB_RANDR_NOTIFY_MASK_SCREEN_CHANGE = 1, which
xrandrSelectEvents() already subscribes to.
* Non-maintainer upload.
* Backport upstream patches to fix data races in QReadWriteLock
(Closes: #1122640).
* Backport a upstream patch to fix data races in QProcessEnvironment
(Closes: #1123679).