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Date:      Thu, 15 Oct 2020 15:03:41 +0200
From:      Peter <pmc@citylink.dinoex.sub.org>
To:        freebsd-stable@freebsd.org
Subject:   12.2 cpuset behaves unexpected
Message-ID:  <20201015130341.GA3798@gate.oper.dinoex.org>

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After upgrading 11.4 -> 12.2, cpuset now behaves rather different:

# cpuset -C -p NNN

11.4: a new set is created with all cpu enabled, and the process
      is moved into that set, with the thread mask unchanged.
12.2: nothing is done, but an error raises if threadmask == setmask.

# cpuset -l XX -C -p NNN

11.4: a new set is created with all cpu enabled, and the process
      is moved into that set, with the thread mask changed to the
      -l parameter.
12.2: an error raises if threadmask == setmask, otherwise the
      threadmask is changed to the -l parameter.

It seems the -C option does not work anymore (except for creating
errors that appear somehow bogus).


PMc



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