[PATCH v2 0/2] bitmap_parselist: support 'all' semantics

[Yury Norov]

RCU code supports a special group 'all' which selects all bits in a bitmap.
We have recently added 'N' extension for bitmap parse, so that '0-N' would
have exactly the same meaning as 'all'. But because the 'all' is already
used by RCU, it would be reasonable to support it in core bitmap code as a
common and easy-readable alias for '0-N'.

Moving the 'all' support to core bitmap code adds another level of
flexibility for system configuration by supporting patterns. For example,
every second bit in cpumask may be selected like this:
	isolcpus=all:1/2

v2:
 - cleanup patch 1;
 - in patch 2 explain why dropping legacy comment.

Yury Norov (2):
  bitmap_parse: support 'all' semantics
  rcu/tree_plugin: don't handle the case of 'all' CPU range

 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(-)

-- 
2.25.1