bitmap_parselist has been evolved from a pretty simple idea for long and now lacks for refactoring. It is not structured, has nested loops and a set of opaque-named variables.
Things are more complicated because bitmap_parselist() is a part of user interface, and its behavior should not change. In this patchset - bitmap_parselist_user() made a wrapper on bitmap_parselist(); - bitmap_parselist() reworked (patch 2); - time measurement in test_bitmap_parselist switched to ktime_get (patch 3); - new tests introduced (patch 4), and - bitmap_parselist_user() testing enabled with the same testset as bitmap_parselist() (patch 5). v1: https://lkml.org/lkml/2018/12/23/50 v2: https://www.spinics.net/lists/kernel/msg3048976.html v3: https://lkml.org/lkml/2019/4/3/68 v4: - use handy memdup_user_nul() instead of copy_from_user() in patch 1; - comments indentation fixed. Yury Norov (5): lib: make bitmap_parselist_user() a wrapper on bitmap_parselist() lib: rework bitmap_parselist lib/test_bitmap: switch test_bitmap_parselist to ktime_get() lib/test_bitmap: add testcases for bitmap_parselist lib/test_bitmap: add tests for bitmap_parselist_user lib/bitmap.c | 277 ++++++++++++++++++++++++++-------------------- lib/test_bitmap.c | 67 ++++++++--- 2 files changed, 210 insertions(+), 134 deletions(-) -- 2.17.1
