[PATCH v3 0/2] io_uring/io-wq: respect cgroup cpusets

From: Felix Moessbauer
Date: Tue Sep 10 2024 - 13:12:27 EST


Hi,

this series continues the affinity cleanup work started in
io_uring/sqpoll. It has been successfully tested against the liburing
testsuite (make runtests), liburing @ caae94903d2e201.

The test wq-aff.t succeeds if at least cpu 0,1 are in
the set and fails otherwise. This is expected, as the test wants
to pin on these cpus. I'll send a patch for liburing to skip that test
in case this pre-condition is not met.

Changes since v2:

- rework commit message (remove ambient and worker from title as well).
Sorry for the noise.
- no functional changes

Changes since v1:

- rework commit messages (don't use ambient cpus, wq threads are no
pollers)
- no functional changes

Best regards,
Felix Moessbauer
Siemens AG

Felix Moessbauer (2):
io_uring/io-wq: do not allow pinning outside of cpuset
io_uring/io-wq: inherit cpuset of cgroup in io worker

io_uring/io-wq.c | 25 +++++++++++++++++++------
1 file changed, 19 insertions(+), 6 deletions(-)

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2.39.2