The weston runtime test is unreliable, depending on the execution speed
of its runner. Example of failure is [1], and success is [2]. This
commit improves the test in several ways, to make it more robust to
execution speed variations:
- The command started in background (weston, weston-simple-egl) are
now started in a subshell. This suppresses the job control messages
when they are stopped. Those messages could interfere with the parsing
of the output;
- Wait time are moved outside the emulator;
- The kernel argument vt.global_cursor_default=0 is added, to make sure
cursors are globally disabled, since the test use vkms display CRCs;
- The memory of the emulator is increased to 512M. This test uses cpio
initramfs, and the filesystem size increased;
- The vkms driver emulates a "vsync" event, but can generate a warning
when the system is too slow. This warning is printed on the console by
the klogd daemon in its default configuration. This commit adds the
overlay file /etc/default/klogd to limit only kernel emergency
messages to be printed on the console. This change fixes the failure
seen in [1] ;
- Some sleep time values were adjusted to run on a "performant" idle
host. Those values are not suitable in all situations. In the
meantime a generic retry mechanism is added in the test infra, this
commit adds a retry logic inspired from the test_flutter runtime
test.
Fixes: [1]
[1] https://gitlab.com/buildroot.org/buildroot/-/jobs/8562483474
[2] https://gitlab.com/buildroot.org/buildroot/-/jobs/8435236652
Signed-off-by: Julien Olivain <ju.o@free.fr>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
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