From: kyle@mcmartin.ca (Kyle McMartin)
To: Joel Soete <soete.joel@tiscali.be>
Cc: parisc-linux@lists.parisc-linux.org
Subject: Re: [parisc-linux] memory barriers, spinlocks, debuglocks, oh my
Date: Sat, 28 Aug 2004 13:07:52 -0400 [thread overview]
Message-ID: <20040828170752.GS2414@mcmartin.ca> (raw)
In-Reply-To: <4130B995.4060201@tiscali.be>
On Sat, Aug 28, 2004 at 04:57:57PM +0000, Joel Soete wrote:
> #define SPIN_LOCK_IRQSAVE(l,f) ({ \
> spinlock_t *s = ATOMIC_HASH(l); \
> local_irq_save(f); \
> spin_lock(s); \
> })
>
This form allows you to use SPIN_LOCK_IRQSAVE as an rvalue, as in
#define foo(a) ({ \
int _b = 10;
_b += a;
_b;
})
baz = foo(10);
baz == 20;
Cheers,
--
Kyle McMartin
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next prev parent reply other threads:[~2004-08-28 17:07 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-08-27 16:37 [parisc-linux] memory barriers, spinlocks, debuglocks, oh my Kyle McMartin
[not found] ` <1093625820.2010.26.camel@mulgrave>
[not found] ` <20040827170342.GD25975@baldric.uwo.ca>
2004-08-28 16:57 ` Joel Soete
2004-08-28 17:07 ` Kyle McMartin [this message]
2004-08-28 22:15 ` Kyle McMartin
2004-08-29 16:11 ` Joel Soete
2004-08-29 16:13 ` Kyle McMartin
2004-08-30 4:06 ` Grant Grundler
2004-08-30 4:14 ` Kyle McMartin
2004-08-30 4:30 ` Grant Grundler
2004-08-30 4:37 ` Kyle McMartin
2004-08-29 16:14 ` Thibaut VARENE
2004-08-29 17:45 ` John David Anglin
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