Hello.
Paul Mackerras wrote:
> If I take out the removed lines in the rest of your patch, I get:
>>+*/
>> #if defined(CONFIG_40x)
>> mtspr(SPRN_PIT, val);
>>+#else
>>+#if !defined(CONFIG_BOOKE)
>>+ val = val ? val - 1 : 0;
>>+#endif
>>+#if defined(CONFIG_8xx_CPU6)
>>
The decrementer in Book E and 4xx processors interrupts on the
transition from 1 to 0, rather than on the 0 to -1 transition as on
64-bit server and 32-bit "classic" (6xx/7xx/7xxx) processors. At the
moment we subtract 1 from the count of how many decrementer ticks are
required before the next int
Sergei Shtylyov writes:
> + /*
> +* The "classic" decrementer interrupts at 0 to -1 transition, while
> +* 40x and book E decrementers interrupt at 1 to 0 transition.
Funky spacing . : )
If I take out the removed lines in the rest of your patch, I get:
> +*/
Hello.
Kumar Gala wrote:
>>The decrementer in Book E and 4xx processors interrupts on the
>>transition from 1 to 0, rather than on the 0 to -1 transition as on
>>64-bit server and 32-bit "classic" (6xx/7xx/7xxx) processors.
>>This fixes the problem by making set_dec subtract 1 from the count for
On Oct 28, 2007, at 9:57 PM, Paul Mackerras wrote:
> The decrementer in Book E and 4xx processors interrupts on the
> transition from 1 to 0, rather than on the 0 to -1 transition as on
> 64-bit server and 32-bit "classic" (6xx/7xx/7xxx) processors.
>
> This fixes the problem by making set_dec su
Hello.
Paul Mackerras wrote:
> The decrementer in Book E and 4xx processors interrupts on the
> transition from 1 to 0, rather than on the 0 to -1 transition as on
> 64-bit server and 32-bit "classic" (6xx/7xx/7xxx) processors.
> This fixes the problem by making set_dec subtract 1 from the count
I wrote:
> @@ -601,10 +601,8 @@ void timer_interrupt(struct pt_regs * regs)
That should be
@@ -601,8 +601,6 @@ void timer_interrupt(struct pt_regs * regs)
of course.
Paul.
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Hi Paul,
On Mon, Oct 29, 2007 at 01:57:17PM +1100, Paul Mackerras wrote:
> diff --git a/include/asm-powerpc/time.h b/include/asm-powerpc/time.h
> index f058955..eed64bd 100644
> --- a/include/asm-powerpc/time.h
> +++ b/include/asm-powerpc/time.h
> @@ -183,6 +183,7 @@ static inline void set_dec(in
The decrementer in Book E and 4xx processors interrupts on the
transition from 1 to 0, rather than on the 0 to -1 transition as on
64-bit server and 32-bit "classic" (6xx/7xx/7xxx) processors.
This fixes the problem by making set_dec subtract 1 from the count for
server and classic processors. Si
