* [PATCH] ppc32: backport Book-E decrementer handling fix from 2.6
@ 2005-04-26 18:48 Eugene Surovegin
2005-04-29 13:56 ` Marcelo Tosatti
0 siblings, 1 reply; 2+ messages in thread
From: Eugene Surovegin @ 2005-04-26 18:48 UTC (permalink / raw)
To: Marcelo Tosatti; +Cc: Paul Mackerras, linuxppc-embedded
Marcelo,
this is backport of Matt Porter's patch for Book-E decrementer
handling in timer_interrupt.
The fix has been in 2.6 from August but never made it to 2.4, and I
re-discovered this fix last week :)
Original Matt's post to linuxppc-dev with explanation can be found at:
http://ozlabs.org/pipermail/linuxppc-dev/2004-August/017458.html
Signed-off-by: Eugene Surovegin <ebs@ebshome.net>
===== arch/ppc/kernel/time.c 1.16 vs edited =====
--- 1.16/arch/ppc/kernel/time.c 2003-07-03 09:56:34 -07:00
+++ edited/arch/ppc/kernel/time.c 2005-04-26 11:37:58 -07:00
@@ -150,7 +150,7 @@
hardirq_enter(cpu);
- while ((next_dec = tb_ticks_per_jiffy - tb_delta(&jiffy_stamp)) < 0) {
+ while ((next_dec = tb_ticks_per_jiffy - tb_delta(&jiffy_stamp)) <= 0) {
jiffy_stamp += tb_ticks_per_jiffy;
if (!user_mode(regs))
ppc_do_profile(instruction_pointer(regs));
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: [PATCH] ppc32: backport Book-E decrementer handling fix from 2.6
2005-04-26 18:48 [PATCH] ppc32: backport Book-E decrementer handling fix from 2.6 Eugene Surovegin
@ 2005-04-29 13:56 ` Marcelo Tosatti
0 siblings, 0 replies; 2+ messages in thread
From: Marcelo Tosatti @ 2005-04-29 13:56 UTC (permalink / raw)
To: Matt Porter, Paul Mackerras, Kumar Gala, linuxppc-embedded
On Tue, Apr 26, 2005 at 11:48:28AM -0700, Eugene Surovegin wrote:
> Marcelo,
>
> this is backport of Matt Porter's patch for Book-E decrementer
> handling in timer_interrupt.
>
> The fix has been in 2.6 from August but never made it to 2.4, and I
> re-discovered this fix last week :)
>
> Original Matt's post to linuxppc-dev with explanation can be found at:
> http://ozlabs.org/pipermail/linuxppc-dev/2004-August/017458.html
Applied, thanks.
> Signed-off-by: Eugene Surovegin <ebs@ebshome.net>
>
> ===== arch/ppc/kernel/time.c 1.16 vs edited =====
> --- 1.16/arch/ppc/kernel/time.c 2003-07-03 09:56:34 -07:00
> +++ edited/arch/ppc/kernel/time.c 2005-04-26 11:37:58 -07:00
> @@ -150,7 +150,7 @@
>
> hardirq_enter(cpu);
>
> - while ((next_dec = tb_ticks_per_jiffy - tb_delta(&jiffy_stamp)) < 0) {
> + while ((next_dec = tb_ticks_per_jiffy - tb_delta(&jiffy_stamp)) <= 0) {
> jiffy_stamp += tb_ticks_per_jiffy;
> if (!user_mode(regs))
> ppc_do_profile(instruction_pointer(regs));
^ permalink raw reply [flat|nested] 2+ messages in thread
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2005-04-26 18:48 [PATCH] ppc32: backport Book-E decrementer handling fix from 2.6 Eugene Surovegin
2005-04-29 13:56 ` Marcelo Tosatti
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