Re: unaligned accesses in SLAB etc.

From: Sam Ravnborg
Date: Sun Oct 19 2014 - 15:56:12 EST


On Sun, Oct 19, 2014 at 01:27:37PM -0400, David Miller wrote:
> From: Sam Ravnborg <sam@xxxxxxxxxxxx>
> Date: Sun, 19 Oct 2014 17:32:20 +0200
>
> > This part:
> >
> >> + __attribute__ ((aligned(64)));
> >
> > Could be written as __aligned(64)
>
> I'll try to remember to sweep this up in sparc-next, thanks Sam.
>
> We probably use this long-hand form in a lot of other places in
> the sparc code too, so I'll try to do a full sweep.

Another related one would be a full sweep of "__asm__ __volatile__"
to the shorter version "asm volatile".

The latter is used in a few places in sparc already - so toolchain supports it.

I got hits in:
include/asm/irqflags_32.h: asm volatile("rd %%psr, %0" : "=r" (flags));
include/asm/processor_64.h:#define cpu_relax() asm volatile("\n99:\n\t" \
kernel/kprobes.c: asm volatile(".global kretprobe_trampoline\n"

But this would touch 93 files. Thats too much crunch :-(

Sam
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