linux-kernel - [PATCH v3 0/5] lib: rework bitmap

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Message-Id: <20190403044032.15965-1-ynorov@marvell.com>
Date:   Wed,  3 Apr 2019 07:40:27 +0300
From:   Yury Norov <yury.norov@...il.com>
To:     Andrew Morton <akpm@...ux-foundation.org>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Rasmus Villemoes <linux@...musvillemoes.dk>,
        Arnd Bergmann <arnd@...db.de>,
        Kees Cook <keescook@...omium.org>,
        Matthew Wilcox <willy@...radead.org>,
        Tetsuo Handa <penguin-kernel@...ove.SAKURA.ne.jp>,
        Mike Travis <travis@....com>
Cc:     Yury Norov <ynorov@...vell.com>, Yury Norov <yury.norov@...il.com>,
        linux-kernel@...r.kernel.org
Subject: [PATCH v3 0/5] lib: rework bitmap_parselist and tests

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: Implementation of an approach with copying the data to
    kernel space in bitmap_parselist_user() instead of parsing
    user data byte by byte. For me, it looks better than v2.

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      | 285 ++++++++++++++++++++++++++--------------------
 lib/test_bitmap.c |  67 ++++++++---
 2 files changed, 218 insertions(+), 134 deletions(-)

-- 
2.17.1