2010-11-26 15:01:43

by Peter Zijlstra

Subject: [PATCH 02/21] powerpc: Use call_rcu_sched() for pagetables

PowerPC relies on IRQ-disable to guard against RCU quiecent states,
use the appropriate RCU call version.

Cc: Nick Piggin <[email protected]>
Cc: Paul E. McKenney <[email protected]>
Signed-off-by: Peter Zijlstra <[email protected]>
Acked-by: Benjamin Herrenschmidt <[email protected]>
---
arch/powerpc/mm/pgtable.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

Index: linux-2.6/arch/powerpc/mm/pgtable.c
===================================================================
--- linux-2.6.orig/arch/powerpc/mm/pgtable.c
+++ linux-2.6/arch/powerpc/mm/pgtable.c
@@ -92,7 +92,7 @@ static void pte_free_rcu_callback(struct

static void pte_free_submit(struct pte_freelist_batch *batch)
{
- call_rcu(&batch->rcu, pte_free_rcu_callback);
+ call_rcu_sched(&batch->rcu, pte_free_rcu_callback);
}

void pgtable_free_tlb(struct mmu_gather *tlb, void *table, unsigned shift)

2010-11-27 10:33:28

by Nick Piggin

Subject: Re: [PATCH 02/21] powerpc: Use call_rcu_sched() for pagetables

Can this go through powerpc tree as a bugfix?

On Fri, Nov 26, 2010 at 03:38:45PM +0100, Peter Zijlstra wrote:
> PowerPC relies on IRQ-disable to guard against RCU quiecent states,
> use the appropriate RCU call version.
>

2010-11-27 21:57:15

by Benjamin Herrenschmidt

Subject: Re: [PATCH 02/21] powerpc: Use call_rcu_sched() for pagetables

On Sat, 2010-11-27 at 21:33 +1100, Nick Piggin wrote:
> Can this go through powerpc tree as a bugfix?
>
> On Fri, Nov 26, 2010 at 03:38:45PM +0100, Peter Zijlstra wrote:
> > PowerPC relies on IRQ-disable to guard against RCU quiecent states,
> > use the appropriate RCU call version.
> >

I'm happy to pick that up tomorrow.

Cheers,
Ben.