This series contains an additional four commits for 3.4. They are all
small fixes. This series is in addition to the set posted earlier at https://lkml.org/lkml/2012/2/3/459, and there is some possibility that
the direct-drive SRCU at https://lkml.org/lkml/2012/2/12/117 will also
make it. The four new patches are as follows:
1. Fix RCU_FAST_NO_HZ to avoid continually retrying dyntick-idle
entry if softirqs are pending.
2. Fix RCU_FAST_NO_HZ to avoid retrying dyntick-idle entry when
idle is re-entered after a timer was posted. For both #1 and
#2, the philosophy is that it is better to take a scheduling-clock
interrupt than to burn lots of CPU in a futile attempt to process
3. Eliminate spurious warnings from synchronize_sched_expedited(),
courtesy of Hugh Dickens.
4. Apply several fixes to rcutorture based on initial inspection.
For a testing-only version of this patchset from git, please see the
following subject-to-rebase branch:
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