* [PATCH] sparc32,leon: SMP power down implementation
@ 2011-04-26 7:48 Daniel Hellstrom
2011-04-26 7:53 ` Daniel Hellstrom
2011-05-16 20:04 ` David Miller
0 siblings, 2 replies; 3+ messages in thread
From: Daniel Hellstrom @ 2011-04-26 7:48 UTC (permalink / raw)
To: sparclinux
Signed-off-by: Daniel Hellstrom <daniel@gaisler.com>
---
arch/sparc/kernel/process_32.c | 12 ++++++++++--
1 files changed, 10 insertions(+), 2 deletions(-)
diff --git a/arch/sparc/kernel/process_32.c b/arch/sparc/kernel/process_32.c
index 1752929..c8cc461 100644
--- a/arch/sparc/kernel/process_32.c
+++ b/arch/sparc/kernel/process_32.c
@@ -128,8 +128,16 @@ void cpu_idle(void)
set_thread_flag(TIF_POLLING_NRFLAG);
/* endless idle loop with no priority at all */
while(1) {
- while (!need_resched())
- cpu_relax();
+#ifdef CONFIG_SPARC_LEON
+ if (pm_idle) {
+ while (!need_resched())
+ (*pm_idle)();
+ } else
+#endif
+ {
+ while (!need_resched())
+ cpu_relax();
+ }
preempt_enable_no_resched();
schedule();
preempt_disable();
--
1.5.4
^ permalink raw reply related [flat|nested] 3+ messages in thread
* Re: [PATCH] sparc32,leon: SMP power down implementation
2011-04-26 7:48 [PATCH] sparc32,leon: SMP power down implementation Daniel Hellstrom
@ 2011-04-26 7:53 ` Daniel Hellstrom
2011-05-16 20:04 ` David Miller
1 sibling, 0 replies; 3+ messages in thread
From: Daniel Hellstrom @ 2011-04-26 7:53 UTC (permalink / raw)
To: sparclinux
Daniel Hellstrom wrote:
>Signed-off-by: Daniel Hellstrom <daniel@gaisler.com>
>---
> arch/sparc/kernel/process_32.c | 12 ++++++++++--
> 1 files changed, 10 insertions(+), 2 deletions(-)
>
>diff --git a/arch/sparc/kernel/process_32.c b/arch/sparc/kernel/process_32.c
>index 1752929..c8cc461 100644
>--- a/arch/sparc/kernel/process_32.c
>+++ b/arch/sparc/kernel/process_32.c
>@@ -128,8 +128,16 @@ void cpu_idle(void)
> set_thread_flag(TIF_POLLING_NRFLAG);
> /* endless idle loop with no priority at all */
> while(1) {
>- while (!need_resched())
>- cpu_relax();
>+#ifdef CONFIG_SPARC_LEON
>+ if (pm_idle) {
>+ while (!need_resched())
>+ (*pm_idle)();
>+ } else
>+#endif
>+ {
>+ while (!need_resched())
>+ cpu_relax();
>+ }
>
>
I have made this CONFIG_SPARC_LEON because I'm not sure if other SMP
SPARC32 supports the pmc idle. One can see from row 109 above that in
single-processor pmc_idle() is called in the same mannor, however no for
SMP... perhaps it is a meaning with that? I don't want to break
anything, if you think is shuold not be ifdeffed I will remove it and
repost.
Daniel
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [PATCH] sparc32,leon: SMP power down implementation
2011-04-26 7:48 [PATCH] sparc32,leon: SMP power down implementation Daniel Hellstrom
2011-04-26 7:53 ` Daniel Hellstrom
@ 2011-05-16 20:04 ` David Miller
1 sibling, 0 replies; 3+ messages in thread
From: David Miller @ 2011-05-16 20:04 UTC (permalink / raw)
To: sparclinux
From: Daniel Hellstrom <daniel@gaisler.com>
Date: Tue, 26 Apr 2011 09:48:17 +0200
> Signed-off-by: Daniel Hellstrom <daniel@gaisler.com>
Applied.
^ permalink raw reply [flat|nested] 3+ messages in thread
end of thread, other threads:[~2011-05-16 20:04 UTC | newest]
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2011-04-26 7:48 [PATCH] sparc32,leon: SMP power down implementation Daniel Hellstrom
2011-04-26 7:53 ` Daniel Hellstrom
2011-05-16 20:04 ` David Miller
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