Messages in this thread | | | From | Will Deacon <> | Subject | [PATCH 0/2] Fix broken cpuset affinity handling on heterogeneous systems | Date | Tue, 31 Jan 2023 22:17:17 +0000 |
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Hi folks,
These two patches fix a couple of CPU affinity issues involving cpusets on heterogeneous systems. A concrete example of this is running 32-bit tasks on recent arm64 SoCs, where some of the cores are only capable of 64-bit execution.
The first patch (from Peter) fixes a regression introduced during the recent merge window which is causing test failures in Android where the problematic patches have been backported. The second patch fixes a longer-standing issue, which I noticed while testing fixes for the initial regression.
Ideally, both of these would land together, but fixing the regression for 6.2 is my main concern.
Anyway, I don't think either Peter or I would call ourselves cpuset experts (far from it!), so please have a look.
Cheers,
Will
Cc: Peter Zijlstra <peterz@infradead.org> Cc: Waiman Long <longman@redhat.com> Cc: Zefan Li <lizefan.x@bytedance.com> Cc: Tejun Heo <tj@kernel.org> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: cgroups@vger.kernel.org
--->8
Peter Zijlstra (1): cpuset: Fix cpuset_cpus_allowed() to not filter offline CPUs
Will Deacon (1): cpuset: Call set_cpus_allowed_ptr() with appropriate mask for task
kernel/cgroup/cpuset.c | 57 +++++++++++++++++++++++++++++++++--------- 1 file changed, 45 insertions(+), 12 deletions(-)
-- 2.39.1.456.gfc5497dd1b-goog
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