From: Willy Tarreau <w@1wt.eu>
To: Toyo Abe <toyoa@mvista.com>
Cc: Andi Kleen <ak@suse.de>, linux-kernel@vger.kernel.org
Subject: Re: [PATCH for 2.4] x86_64: Fix missing delay when the TSC counter just overflowed
Date: Wed, 20 Sep 2006 23:28:15 +0200 [thread overview]
Message-ID: <20060920212815.GA9397@1wt.eu> (raw)
In-Reply-To: <200609202143.k8KLhsxg007647@dhcp119.mvista.com>
On Wed, Sep 20, 2006 at 02:43:54PM -0700, Toyo Abe wrote:
> I'd seen a problem that *delay functions return in too short delay.
> It happens when the lower 32bit of TSC counter is overflowed.
> This patch fixes the problem. This is back-port of Andi Kleen's
> 2.6 fix.
>
> http://www.kernel.org/git/?p=linux/kernel/git/tglx/history.git;a=commit;h=6c51e28ffbbebf49437ec63ac4f9e385d60827e5
>
> Signed-off-by: Toyo Abe <toyoa@mvista.com>
>
> ---
>
> arch/x86_64/lib/delay.c | 2 +-
> 1 files changed, 1 insertions(+), 1 deletions(-)
>
> diff --git a/arch/x86_64/lib/delay.c b/arch/x86_64/lib/delay.c
> index cc845d2..91345ee 100644
> --- a/arch/x86_64/lib/delay.c
> +++ b/arch/x86_64/lib/delay.c
> @@ -19,7 +19,7 @@ #endif
>
> void __delay(unsigned long loops)
> {
> - unsigned long bclock, now;
> + unsigned bclock, now;
>
> rdtscl(bclock);
> do
Queued.
Thanks Toyo,
Willy
prev parent reply other threads:[~2006-09-20 21:46 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-09-20 21:43 [PATCH for 2.4] x86_64: Fix missing delay when the TSC counter just overflowed Toyo Abe
2006-09-20 21:28 ` Willy Tarreau [this message]
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