From: Jun Sun <jsun@mvista.com>
To: Tinga Shilo <tingashilo@yahoo.com>
Cc: linux-mips@linux-mips.org, jsun@mvista.com
Subject: Re: static variables access and gp
Date: Thu, 6 Mar 2003 09:40:34 -0800 [thread overview]
Message-ID: <20030306094034.A26071@mvista.com> (raw)
In-Reply-To: <20030306073017.65521.qmail@web41509.mail.yahoo.com>; from tingashilo@yahoo.com on Wed, Mar 05, 2003 at 11:30:17PM -0800
On Wed, Mar 05, 2003 at 11:30:17PM -0800, Tinga Shilo wrote:
> Hi,
> I am implementing a kernel mechanism which is
> very performance oriented. Along my long critical
> path,
> there is a static variable that needs to be accessed
> quite a few times. This variable is a structure which
> is approximately 60 bytes big.
> In there any way I can "convince" my kernel (compiled
> with gcc) to access this variable using gp ?
> Is gp usually used for this purpose in mips-linux ?
> Can it be ?
>
No. gp is used by kernel to hold current process in 2.4
and current thread in 2.5. Don't mess with it unless
you are absolutely sure what you are doing.
Jun
next prev parent reply other threads:[~2003-03-06 17:40 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-03-06 7:30 static variables access and gp Tinga Shilo
2003-03-06 17:40 ` Jun Sun [this message]
2003-03-09 7:24 ` Tinga Shilo
2003-03-09 7:24 ` Tinga Shilo
2003-03-09 13:46 ` Ralf Baechle
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