From: "Perez-Gonzalez, Inaky" <inaky.perez-gonzalez@intel.com>
To: "sankar" <san_madhav@hotmail.com>, "Tim Hockin" <thockin@hockin.org>
Cc: <linux-kernel@vger.kernel.org>
Subject: RE: Question on atomic_inc/dec
Date: Wed, 15 Oct 2003 10:38:14 -0700 [thread overview]
Message-ID: <A20D5638D741DD4DBAAB80A95012C0AED7868F@orsmsx409.jf.intel.com> (raw)
> From: sankar [mailto:san_madhav@hotmail.com]
> any solution to the original problem???
> (atomic_inc() defintion not there in redhat 9.0 asm/atomic.h)
Create an atomic.h header file in your source tree with the code
below, but bear in mind that porting to other arches might be painful:
struct atomic
{
volatile int i;
}
/* Simple atomic increment. */
static inline
void atomic_inc (struct atomic *a)
{
asm volatile (
"lock; incl %0"
: "=m" (a->i)
: "m" (a->i));
}
/* Simple atomic decrement. */
static inline
void atomic_dec (struct atomic *a)
{
asm volatile (
"lock; decl %0"
: "=m" (a->i)
: "m" (a->i));
}
Iñaky Pérez-González -- Not speaking for Intel -- all opinions are my own (and my fault)
next reply other threads:[~2003-10-15 17:38 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-10-15 17:38 Perez-Gonzalez, Inaky [this message]
2003-10-15 18:02 ` [OT] Question on atomic_inc/dec Petr Vandrovec
-- strict thread matches above, loose matches on Subject: below --
2003-10-14 22:29 Perez-Gonzalez, Inaky
2003-10-15 17:28 ` sankar
2003-10-14 21:17 Perez-Gonzalez, Inaky
2003-10-14 21:34 ` sankar
2003-10-14 21:44 ` Tim Hockin
2003-10-14 22:35 ` David S. Miller
2003-10-15 7:57 ` Arjan van de Ven
2003-10-14 18:38 sankar
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