On Mon, Mar 25, 2013 at 02:02:09PM -0500, Nathan Fontenot wrote:
> There are instances in which we do not want topology updates to occur.
> In order to allow this a /proc interface (/proc/powerpc/topology_updates)
> is introduced so that topology updates can be enabled and disabled.
>
> This patch also adds a prrn_is_enabled() call so that PRRN events are
> handled in the kernel only if topology updating is enabled.
Hi Nathan,
> Index: powerpc/arch/powerpc/mm/numa.c
> ===================================================================
> --- powerpc.orig/arch/powerpc/mm/numa.c 2013-03-20 12:27:48.000000000
> -0500
> +++ powerpc/arch/powerpc/mm/numa.c 2013-03-20 12:27:52.000000000 -0500
> @@ -1577,4 +1579,62 @@
>
> return rc;
> }
> +
> +inline int prrn_is_enabled(void)
> +{
> + return prrn_enabled;
> +}
...
> Index: powerpc/arch/powerpc/include/asm/topology.h
> ===================================================================
> --- powerpc.orig/arch/powerpc/include/asm/topology.h 2013-03-20
> 12:25:37.000000000 -0500
> +++ powerpc/arch/powerpc/include/asm/topology.h 2013-03-20
> 12:27:52.000000000 -0500
> @@ -71,6 +71,7 @@
> #if defined(CONFIG_NUMA) && defined(CONFIG_PPC_SPLPAR)
> extern int start_topology_update(void);
> extern int stop_topology_update(void);
> +extern inline int prrn_is_enabled(void);
This doesn't compile for me, with:
arch/powerpc/kernel/rtasd.c: In function 'rtas_event_scan':
arch/powerpc/include/asm/topology.h:74:19: sorry, unimplemented: inlining
failed in call to 'prrn_is_enabled': function body not available
arch/powerpc/kernel/rtasd.c:299:22: sorry, unimplemented: called from here
cheers
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