[PATCH tip/core/rcu 0/2] Add "all" to bitmap ranges

From: Paul E. McKenney
Date: Tue May 11 2021 - 18:41:18 EST


Hello!

This series adds "all" as a first-class bitmap range, for example so that
"rcu_nocbs=all:1/2" would offload all the even-numbered CPUs regardless
of the number of CPUs on the system.

1. bitmap_parse: Support 'all' semantics, courtesy of Yury Norov.

2. rcu/tree_plugin: Don't handle the case of 'all' CPU range,
courtesy of Yury Norov.

Thanx, Paul

------------------------------------------------------------------------

Documentation/admin-guide/kernel-parameters.rst | 5 +++++
kernel/rcu/tree_plugin.h | 9 +++------
lib/bitmap.c | 9 +++++++++
lib/test_bitmap.c | 7 +++++++
4 files changed, 24 insertions(+), 6 deletions(-)