On Fri, 2007-07-13 at 01:02 -0700, Sven-Thorsten Dietrich wrote:
> On Thu, 2007-07-12 at 21:14 -0700, Daniel Walker wrote:
> > 
> > It looks like your patch might be line wrapped ?
> > 
> 
> I reconstituted the patch to clear the white space damage.
> 
> - Sven
> 
> >From [EMAIL PROTECTED] Thu Jul 12 21:59:46 2007
> Mime-Version: 1.0
> X-Mailer: GroupWise 7.0.2 HP
> Subject: [PATCH] RT: add clock.cycle_accumulated to vsyscall gtod update
> Date: Thu, 12 Jul 2007 21:59:46 -0600
> Message-ID: <[EMAIL PROTECTED]>
> From: "Gregory Haskins" <[EMAIL PROTECTED]>
> To: "Ingo Molnar" <[EMAIL PROTECTED]>, [EMAIL PROTECTED]
> Cc: "Sven Dietrich" <[EMAIL PROTECTED]>, "David Bahi" <[EMAIL PROTECTED]>, 
> [email protected]
> Content-Type: text/plain; charset=utf-8
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> 
> 2.6.22 changed the vsyscall mechanism to store a more cache-thrash
> friendly version of the gtod data.  The original gtod cache code used an
> entire struct clock + structure-copy, whereas the new code uses a
> pseudo/shadow version + explicit-copy. 
> 
> clock.cycle_accumulated was added to RT prior to 2.6.22 so the vsyscall
> code must also be updated for the port to 22.
> 
> Signed-off-by: Gregory Haskins <[EMAIL PROTECTED]>
> 
> Acked-by: Sven-Thorsten Dietrich <[EMAIL PROTECTED]>

Good catch!

Acked-by: John Stultz <[EMAIL PROTECTED]>




> --- 
> 
>  vsyscall.c |    1 +
>  1 file changed, 1 insertion(+)
> 
> Index: linux-2.6.22/arch/x86_64/kernel/vsyscall.c
> ===================================================================
> --- linux-2.6.22.orig/arch/x86_64/kernel/vsyscall.c
> +++ linux-2.6.22/arch/x86_64/kernel/vsyscall.c
> @@ -90,6 +90,7 @@ void update_vsyscall(struct timespec *wa
>       /* copy vsyscall data */
>       vsyscall_gtod_data.clock.vread = clock->vread;
>       vsyscall_gtod_data.clock.cycle_last = clock->cycle_last;
> +       vsyscall_gtod_data.clock.cycle_accumulated = clock->cycle_accumulated;
>       vsyscall_gtod_data.clock.mask = clock->mask;
>       vsyscall_gtod_data.clock.mult = clock->mult;
>       vsyscall_gtod_data.clock.shift = clock->shift;

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