As we now have OpenMP and nOS-V models for breakdown, we may have the
situation in which nOS-V traces don't have enough events to enable the
breakdown model, but we do on OpenMP. Rather than stopping, disable the
nOS-V model with a warning and continue.
Ensure we can call nosv_yield in a loop without generating a lot of
events when using the level 3 instrumentation level. Noisy events are
now moved to level 4, so they shouldn't appear on the trace.
Additionally, make sure that the noisy events appear on level 4.
There is a problem in the way we are reading the buffer in nOS-V, which
fails when the ring buffer gets full. This regression test ensures it is
fixed.
Reported-by: David Álvarez <david.alvarez@bsc.es>
The nosv.can_breakdown attribute states if enough events for the
breakdown model of nOS-V are enabled at runtime. It is used to ensure
that breakdown traces have the progress events enabled along with others
required for proper visualization of traces.
The emulator will panic when the level is not enough, instead of relying
on users to always remember to enable the correct level.
Some threads may fail to enable the kernel instrumentation by reaching
the memory lock limit, causing the kernel instrumentation to be disabled
without any error in the emulation.
To prevent this situation, we run the test manually and check that there
are no warnings during the execution.
The test creates tasks that pause until the children task have finished.
The value of the perf_event_paranoid file is checked to determine if we
can run the test.
The runtime tests check that we can submit and inline task (which must
emit a pause event before the nested task begins) and that we can run
parallel tasks.
Instead of showing the "attached" state with the VH{aA} events, we show
when the call to nosv_attach() and nosv_detach() take place. The old
VH{aA} events are now ignored. Bumps the nOS-V model version to 1.1.0.
Causes the packages to always appear as found or not found in the
summary of cmake. Otherwise they were only checked if the compiler
supports the -fompss2 flag.
