On Mon, May 04, 2020 at 08:05:00AM -0400, Joel Fernandes (Google) wrote:
> These patches clean up the usage of dynticks nesting counters simplifying the
> code, while preserving the usecases.
>
> It is a much needed simplification, makes the code less confusing, and
> prevents
> future bugs such as those that arise from forgetting that the
> dynticks_nmi_nesting counter is not a simple counter and can be "crowbarred"
> in
> common situations.
>
> rcutorture testing with all TREE RCU configurations succeed with
> CONFIG_RCU_EQS_DEBUG=y and CONFIG_PROVE_LOCKING=y.
>
> v1->v2:
> - Rebase on v5.6-rc6
>
> v2->v3:
> - Rebase on rcu/dev with adjustments for tasks-RCU.
Thank you!
But this does not apply to any of v5.6-rc6, v5.7-rc1, or v5.7-rc2.
Where should I be trying to apply it?
Thanx, Paul
> Joel Fernandes (Google) (4):
> Revert b8c17e6664c4 ("rcu: Maintain special bits at bottom of
> ->dynticks counter")
> rcu/tree: Add better tracing for dyntick-idle
> rcu/tree: Clean up dynticks counter usage
> rcu/tree: Remove dynticks_nmi_nesting counter
>
> Madhuparna Bhowmik (1):
> trace: events: rcu: Change description of rcu_dyntick trace event
>
> .../Data-Structures/Data-Structures.rst | 31 +--
> Documentation/RCU/stallwarn.rst | 6 +-
> include/linux/rcutiny.h | 3 -
> include/trace/events/rcu.h | 29 +--
> kernel/rcu/rcu.h | 4 -
> kernel/rcu/tree.c | 199 +++++++-----------
> kernel/rcu/tree.h | 4 +-
> kernel/rcu/tree_stall.h | 4 +-
> 8 files changed, 110 insertions(+), 170 deletions(-)
>
> --
> 2.26.2.526.g744177e7f7-goog
>
