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Date: Mon, 18 Dec 2023 09:05:56 -0800
From: Tanzir Hasan <>
To: Nick Desaulniers <>
Cc: Andy Shevchenko <>, Andy Shevchenko <>, 
	Kees Cook <>,,, Nick DeSaulniers <>, 
	Andrew Morton <>,, 
	Al Viro <>
Subject: Re: [PATCH v2 1/2] sh: Added kernel.h to word-at-a-time

> While REPEAT_BYTE has a manageable number of users, upper_* and
> lower_* have significantly more; I worry about moving those causing
> regressions.  We can move them, but such changes would need
> significantly more soak time than this series IMO.  Tanzir is also
> working on statistical analysis; I suspect if he analyzes
> include/linux/kernel.h, he can comment on whether the usage of
> REPEAT_BYTE is correlated with the usage of upper_* and lower_* in
> order to inform whether they should be grouped together or not.

Removing REPEAT_BYTE is manageable and I have already moved it. I will
be pushing a patch that moves just that into another file called wordpart.h.
There are too many instances of the other functions for it to make sense to
remove them all in this patch.


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