Hello! This series adds ranges to bitmaps, and thus to CPU numbers, so that a kernel boot parameter such as "rcu_nocbs=2-N" is now permitted. 1. test_bitmap: clearly separate ERANGE from EINVAL tests, courtesy of Paul Gortmaker. 2. test_bitmap: add tests to trigger ERANGE case, courtesy of Paul Gortmaker. 3. test_bitmap: add more start-end:offset/len tests, courtesy of Paul Gortmaker. 4. bitmap: fold nbits into region struct, courtesy of Paul Gortmaker. 5. bitmap: move ERANGE check from set_region to check_region, courtesy of Paul Gortmaker. 6. bitmap: support "N" as an alias for size of bitmap, courtesy of Paul Gortmaker. 7. test_bitmap: add tests for "N" alias, courtesy of Paul Gortmaker. 8. deprecate "all" option to rcu_nocbs=, courtesy of Paul Gortmaker. 9. Use "all" and "N" in "nohz_full" and "rcu_nocbs". Thanx, Paul ------------------------------------------------------------------------ Documentation/admin-guide/kernel-parameters.rst | 7 + Documentation/admin-guide/kernel-parameters.txt | 4 kernel/rcu/tree_plugin.h | 6 - lib/bitmap.c | 55 +++++++------ lib/test_bitmap.c | 46 +++++++++- tools/testing/selftests/rcutorture/configs/rcu/TREE04.boot | 2 tools/testing/selftests/rcutorture/configs/rcu/TREE08.boot | 2 7 files changed, 84 insertions(+), 38 deletions(-)
