linux-kernel - Re: [RFC/PATCH 3/3] ARM: Replace calls to __aeabi

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Date:	Mon, 23 Nov 2015 13:16:53 -0800
From:	Stephen Boyd <sboyd@...eaurora.org>
To:	Måns Rullgård <mans@...sr.com>
Cc:	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
	linux-arm-msm@...r.kernel.org, Nicolas Pitre <nico@...xnic.net>,
	Arnd Bergmann <arnd@...db.de>,
	Steven Rostedt <rostedt@...dmis.org>
Subject: Re: [RFC/PATCH 3/3] ARM: Replace calls to __aeabi_{u}idiv with
 udiv/sdiv instructions

On 11/23, Måns Rullgård wrote:
> Stephen Boyd <sboyd@...eaurora.org> writes:
> 
> > On 11/21, Måns Rullgård wrote:
> >> 
> >> These functions are rather similar.  Perhaps they could be combined
> >> somehow.
> >> 
> >
> > Yes. I have this patch on top, just haven't folded it in because
> > it doesn't reduce the lines of code.
> 
> I don't see any reason to split it anyhow.  The end result isn't any
> harder to understand than the intermediate.

Yep.

> 
> > ----8<----
> > From: Stephen Boyd <sboyd@...eaurora.org>
> > Subject: [PATCH] consolidate with module code
> >
> > Signed-off-by: Stephen Boyd <sboyd@...eaurora.org>
> > ---
> >  arch/arm/include/asm/setup.h |  3 +++
> >  arch/arm/kernel/module.c     | 16 +++++--------
> >  arch/arm/kernel/setup.c      | 54 +++++++++++++++++++++++++++-----------------
> >  3 files changed, 42 insertions(+), 31 deletions(-)
> >
> > diff --git a/arch/arm/include/asm/setup.h b/arch/arm/include/asm/setup.h
> > index e0adb9f1bf94..3f251cdb94ef 100644
> > --- a/arch/arm/include/asm/setup.h
> > +++ b/arch/arm/include/asm/setup.h
> > @@ -25,4 +25,7 @@ extern int arm_add_memory(u64 start, u64 size);
> >  extern void early_print(const char *str, ...);
> >  extern void dump_machine_table(void);
> >
> > +extern void patch_uidiv(void *addr, size_t size);
> > +extern void patch_idiv(void *addr, size_t size);
> 
> Why not call things sdiv and udiv like the actual instructions?
> 

Sure. I'll fold this into v2.

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