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List: linux-cgroups
Subject: [PATCH 0/2] Fix broken cpuset affinity handling on heterogeneous systems
From: Will Deacon <will () kernel ! org>
Date: 2023-01-31 22:17:17
Message-ID: 20230131221719.3176-1-will () kernel ! org
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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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