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Re: Merging some linux/generic code into linux?

From: Mike Frysinger <vapier at gentoo dot org>
To: Joseph Myers <joseph at codesourcery dot com>
Cc: Aurelien Jarno <aurelien at aurel32 dot net>, libc-alpha at sourceware dot org
Date: Sat, 2 Jan 2016 00:45:10 -0500
Subject: Re: Merging some linux/generic code into linux?
Authentication-results: sourceware.org; auth=none
References: <20151230234608 dot GA3839 at aurel32 dot net> <alpine dot DEB dot 2 dot 10 dot 1512311909160 dot 15940 at digraph dot polyomino dot org dot uk>

On 31 Dec 2015 19:12, Joseph Myers wrote:
> On Thu, 31 Dec 2015, Aurelien Jarno wrote:
> > architectures? I am not sure if passing one more argument to the
> > syscalls really changes the performances.
> 
> Well, it probably increases code size compared to using the direct 
> syscalls where available.

i'm not entirely sure about this.  at least for cancellable syscalls,
i think the overhead of that logic is greater than argument shuffling.
would be good to gather real data here though.

> But some unification makes sense in at least a 
> subset of cases: those where the generic/ code is actually needed on some 
> other architectures as well.  E.g. umount (bug 16552).

those arches can still directly #include files ...
-mike

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