From: Wu Zhangjin <wuzhangjin@gmail.com>
To: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Cc: Ralf Baechle <ralf@linux-mips.org>,
Steven Rostedt <srostedt@redhat.com>,
linux-mips@linux-mips.org,
David Daney <ddaney@caviumnetworks.com>
Subject: Re: [PATCH] MIPS: tracing: Optimize the implementation
Date: Fri, 12 Mar 2010 18:11:35 +0800 [thread overview]
Message-ID: <1268388695.6447.3.camel@falcon> (raw)
In-Reply-To: <20100312085053.GB6364@alpha.franken.de>
On Fri, 2010-03-12 at 09:50 +0100, Thomas Bogendoerfer wrote:
> On Fri, Mar 12, 2010 at 02:07:37AM +0800, Wu Zhangjin wrote:
> > +/*
> > + * If the Instruction Pointer is in module space (0xc0000000), return ture;
> > + * otherwise, it is in kernel space (0x80000000), return false.
> > + */
> > +#define in_module(ip) (unlikely((ip) & 0x40000000))
> > +
>
> looks broken for 64bit, but maybe this is a 32bit only feature...
Actually, this works well on my 64bit YeeLoong laptop ;)
But we should find another better solution.
Regards,
Wu Zhangjin
next prev parent reply other threads:[~2010-03-12 10:18 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-03-11 18:07 [PATCH] MIPS: tracing: Optimize the implementation Wu Zhangjin
2010-03-12 8:50 ` Thomas Bogendoerfer
2010-03-12 10:11 ` Wu Zhangjin [this message]
2010-03-12 10:14 ` Ralf Baechle
2010-03-12 16:36 ` David Daney
[not found] ` <4B993B32.7000006@caviumnetworks.com>
2010-03-12 11:43 ` Wu Zhangjin
2010-03-12 14:57 ` Wu Zhangjin
2010-03-13 4:10 ` Wu Zhangjin
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