* [PATCH RT 0/5] preempt_disable/enable -> migrate_disable/enable pushdown proposals
@ 2014-02-10 15:36 Nicholas Mc Guire
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From: Nicholas Mc Guire @ 2014-02-10 15:36 UTC (permalink / raw)
To: linux-rt-users
Cc: LKML, Sebastian Andrzej Siewior, Steven Rostedt, Peter Zijlstra,
Carsten Emde, Thomas Gleixner, Andreas Platschek
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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2014-02-10 15:36 [PATCH RT 0/5] preempt_disable/enable -> migrate_disable/enable pushdown proposals Nicholas Mc Guire
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