linux-kernel - Re: [PATCH 1/4] Blackfin: arch patch for 2.6.18

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Date:	Wed, 27 Sep 2006 19:01:03 -0400
From:	Robin Getz <rgetz@...ckfin.uclinux.org>
To:	Arnd Bergmann <arnd@...db.de>
Cc:	luke Yang <luke.adi@...il.com>, Andrew Morton <akpm@...l.org>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/4] Blackfin: arch patch for 2.6.18

Arnd wrote:
>An even better strategy is to do what the better architecture 
>implementations in linux do and to apply common sense. "better" of course 
>is rather subjective, but I typically recommend looking at arch/parisc as 
>a good example.

Sure - we will go with that.

./linux-2.6.x/include/asm-parisc/system.h

/* interrupt control */
#define local_save_flags(x)     __asm__ __volatile__("ssm 0, %0" : "=r" (x) 
: : "memory")
#define local_irq_disable()     __asm__ __volatile__("rsm %0,%%r0\n" : : 
"i" (PSW_I) : "memory" )
#define local_irq_enable()      __asm__ __volatile__("ssm %0,%%r0\n" : : 
"i" (PSW_I) : "memory" )

:)

-Robin 
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