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Date:   Thu, 9 Nov 2017 15:15:20 -0800
From:   Andrew Morton <>
To:     Yury Norov <>
        Alexey Dobriyan <>,
        Clement Courbet <>,
        Matthew Wilcox <>,
        Rasmus Villemoes <>
Subject: Re: [PATCH] lib: test module for find_*_bit() functions

On Thu,  9 Nov 2017 17:07:14 +0300 Yury Norov <> wrote:

> find_bit functions are widely used in the kernel, including hot paths.
> This module tests performance of that functions in 2 typical scenarios:
> randomly filled bitmap with relatively equal distribution of set and
> cleared bits, and sparse bitmap which has 1 set bit for 500 cleared bits.
> ...
> +config TEST_FIND_BIT

Well.  It doesn't actually "test" the code.  It measures its performance ;)

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