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Date: Thu, 9 Nov 2017 15:15:20 -0800
From: Andrew Morton <akpm@linux-foundation.org>
To: Yury Norov <ynorov@caviumnetworks.com>
Cc: linux-kernel@vger.kernel.org, Alexey Dobriyan <adobriyan@gmail.com>,
        Clement Courbet <courbet@google.com>,
        Matthew Wilcox <mawilcox@microsoft.com>,
        Rasmus Villemoes <linux@rasmusvillemoes.dk>
Subject: Re: [PATCH] lib: test module for find_*_bit() functions
Message-Id: <20171109151520.053425b697cd808206996e07@linux-foundation.org>
In-Reply-To: <20171109140714.13168-1-ynorov@caviumnetworks.com>
References: <20171109140714.13168-1-ynorov@caviumnetworks.com>
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On Thu,  9 Nov 2017 17:07:14 +0300 Yury Norov <ynorov@caviumnetworks.com> 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 ;)