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Subject[PATCH RT 0/5] preempt_disable/enable -> migrate_disable/enable pushdown proposals


a small series of preempt_disable/enable -> migrate_disable/enable pushdown
proposals

In mainline a number of preempt_disable/enable are actually topology control
and not actual concurrency control - these cases can be pushed down to a
preemptible migrate_disable/enable.

This little series contains a few pushdowns from preempt_disable to
migrate_disable where code pattern scans using cocci scripts suggested this
to be possible. The cases detected were then reviewed and tested with the
migrate_disable/enable respectively with the preempt_disable/enable
completely removed in one case.

Testing was done but is of very limited use for locking/migration related
issues, so a review of the code analysis/rational is requested along with
additional testing.

thx!
hofrat


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