From: Andrew Morton <akpm@linux-foundation.org>
To: Ingo Molnar <mingo@elte.hu>
Cc: Rusty Russell <rusty@rustcorp.com.au>,
Linus Torvalds <torvalds@linux-foundation.org>,
Stephen Rothwell <sfr@canb.auug.org.au>,
Thomas Gleixner <tglx@linutronix.de>,
"H. Peter Anvin" <hpa@zytor.com>, Mike Travis <travis@sgi.com>,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH] cpumask: introduce new API, without changing anything
Date: Fri, 7 Nov 2008 00:52:29 -0800 [thread overview]
Message-ID: <20081107005229.53d6f2e3.akpm@linux-foundation.org> (raw)
In-Reply-To: <20081107084016.GF4435@elte.hu>
On Fri, 7 Nov 2008 09:40:16 +0100 Ingo Molnar <mingo@elte.hu> wrote:
> +#if NR_CPUS == 1
> +/* Uniprocesor. */
> +#define cpumask_first(src) ({ (void)(src); 0; })
>
> ...
>
> +#else
> +static inline unsigned int cpumask_first(const struct cpumask *srcp)
> +{
> + return find_first_bit(cpumask_bits(srcp), nr_cpumask_bits);
> +}
>
> ...
>
> +#endif /* SMP */
So I can happily compile and run
cpumask_first("hello, world");
with CONFIG_SMP=n?
next prev parent reply other threads:[~2008-11-07 8:53 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20081029152849.3883d072.sfr@canb.auug.org.au>
[not found] ` <200811021229.16061.rusty@rustcorp.com.au>
[not found] ` <alpine.LFD.2.00.0811011834360.3483@nehalem.linux-foundation.org>
2008-11-06 22:49 ` [PATCH] cpumask: introduce new API, without changing anything Rusty Russell
2008-11-07 8:40 ` Ingo Molnar
2008-11-07 8:52 ` Andrew Morton [this message]
2008-11-07 8:57 ` Ingo Molnar
2008-11-07 11:32 ` Rusty Russell
2008-11-07 9:11 ` Stephen Rothwell
2008-11-07 9:39 ` Ingo Molnar
2008-11-07 12:24 ` Ingo Molnar
2008-11-07 18:17 ` Mike Travis
2008-11-08 9:24 ` Rusty Russell
2008-11-08 12:28 ` Ingo Molnar
2008-11-10 18:16 ` Mike Travis
2008-11-09 20:01 ` Linus Torvalds
2008-11-09 20:16 ` Ingo Molnar
2008-11-09 21:37 ` Ingo Molnar
2008-11-09 21:46 ` Rusty Russell
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