enable build and test outside src dir
add a option `build_outside_src`, defaulted
to false, to undo a tweak to enable meson to work
well with builds within src dir.
this makes some tools work better + enables
moving builds etc. to /tmp (faster for iteration if
ramdisk)
The gpu-topology feature can be enabled to include GPUs when generating
a topology-map. Disabling the feature will remove the nvml-wrapper
dependency as well as GPU-specific code in topology.rs.
Most of the code was moved to a new module in rust/scx_utils/src/gpu.rs
but some of it was kept in topology.rs and hidden behind #[cfg(feature =
"gpu-topology")].
Signed-off-by: Fredrik Lönnegren <fredrik@frelon.se>
* enable ide's etc. to work on the bpf.c files
this makes it so that clangd and ide tools which use clangd
can work on the bpf.c code.
nothing should actually be changed outside of that ide/editor
environment, all the changes are ifdef'ed on LSP which is set
in the added .clangd file.
* move intf include out of both sides of ifdef toggle
* make ci nicer
Replace build scheds and merged with caching build, and rename
caching build to build-and-test.
This should make the CI reports on PRs be nice and specific
(i.e. at a glance, know what passes and what fails).
It also keeps PR CI jobs up to date (as folks edit things) and
has them all use one config/24.04 etc.
* prevent untar permission errors from causing cache misses
When preempting restrict preemption to the current layer cpumask. This
may reduce the amount of preemption, but cause better cache locality
of preempted tasks.
Signed-off-by: Daniel Hodges <hodges.daniel.scott@gmail.com>
I think I see PRs being harder to write because all parts of a CI job
are cancelled when one fails.
I think I am also starting to see that we have enough largely disjoint
moving pieces that there will often be one that is failing stress
tests at any time.
Make CI run all stress tests always to address this.
Remove cast_mask() function distributed throughout different schedulers
and add it in common.bpf.h so every scheduler can reference it once they
need to.
Signed-off-by: I Hsin Cheng <richard120310@gmail.com>
This reverts commit 809d39aa7f.
Dispatching all kthreads directly doesn't really help much at preventing
stalls with the stress-ng fork stressor, so revert this commit. A better
workaround will be provided in the next commit.
Signed-off-by: Andrea Righi <andrea.righi@linux.dev>
Exposes an option --monitor-no-dbus in scx_loader that will monitor CPU
utilization and start scx_lavd when any CPU exceeds 90% for more than 5
seconds. scx_lavd will be terminated if all CPUs are below 90% for
more than 30 seconds. When this flag is specified, scx_loader's
dbus functionality is not utilized.
If a waker is more latency critical than a wakee, inherit a waker's
latency criticality for the wakee. This allows the wakee to consider the
context of who wakes me up. For now, we limit such inheritance to one
hop and one schedule.
Signed-off-by: Changwoo Min <changwoo@igalia.com>
Use the cast_mask helper to clean up some of the bpf cpumask conversion
code for preemption.
Signed-off-by: Daniel Hodges <hodges.daniel.scott@gmail.com>
Add topology aware preemption that begins in the local LLC and attempts
to preempt from cpus nearest in the topology.
Signed-off-by: Daniel Hodges <hodges.daniel.scott@gmail.com>
Previously, we found a victim from the entire CPUs, which include remote
or non-compatible CPUs. Now we limit our search for victim finding
within a task's compute domain.
Signed-off-by: Changwoo Min <changwoo@igalia.com>
Add core growth algos for Big/Little core support. The algos allow
layers to grow layers by preferring either big or little cores first.
Signed-off-by: Daniel Hodges <hodges.daniel.scott@gmail.com>
Add extra ordering macros for Core/CPU structs for ease of use with
Rust standard library features. This issue was hit when trying to sort
cores based on the CoreType. See this similar issue for details:
https://github.com/rust-lang/rust/issues/113550
Signed-off-by: Daniel Hodges <hodges.daniel.scott@gmail.com>
