* [PATCH for 2.4] x86_64: Fix missing delay when the TSC counter just overflowed
@ 2006-09-20 21:43 Toyo Abe
2006-09-20 21:28 ` Willy Tarreau
0 siblings, 1 reply; 2+ messages in thread
From: Toyo Abe @ 2006-09-20 21:43 UTC (permalink / raw)
To: Willy Tarreau; +Cc: Andi Kleen, linux-kernel
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
^ permalink raw reply related [flat|nested] 2+ messages in thread* Re: [PATCH for 2.4] x86_64: Fix missing delay when the TSC counter just overflowed
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
0 siblings, 0 replies; 2+ messages in thread
From: Willy Tarreau @ 2006-09-20 21:28 UTC (permalink / raw)
To: Toyo Abe; +Cc: Andi Kleen, linux-kernel
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
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2006-09-20 21:28 ` Willy Tarreau
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