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Commit 595fe914 authored by Ananth N Mavinakayanahalli's avatar Ananth N Mavinakayanahalli Committed by Benjamin Herrenschmidt
Browse files

powerpc: Export PIR data through sysfs 



On Fri, Nov 11, 2011 at 10:17:55AM +0530, Ananth N Mavinakayanahalli wrote:
> >
> > At this rate we're going to end up with no bits left for CPU features
> > way too quickly... Especially for something we only care about once at
> > boot time.
> >
> > Wouldn't CPU_FTR_PPCAS_ARCH_V2 be a good enough test ?
>
> /me checks Cell manuals... yes, that test would be good enough. I will
> cook up a patch to use this.

Here it is...

Signed-off-by: default avatarBenjamin Herrenschmidt <benh@kernel.crashing.org>
parent 184cd4a3

arch/powerpc/kernel/sysfs.c

+8 −0
Original line number Diff line number Diff line
@@ -177,11 +177,13 @@ SYSFS_PMCSETUP(mmcra, SPRN_MMCRA); 
SYSFS_PMCSETUP(purr, SPRN_PURR);

SYSFS_PMCSETUP(spurr, SPRN_SPURR);

SYSFS_PMCSETUP(dscr, SPRN_DSCR);

SYSFS_PMCSETUP(pir, SPRN_PIR);



static SYSDEV_ATTR(mmcra, 0600, show_mmcra, store_mmcra);

static SYSDEV_ATTR(spurr, 0600, show_spurr, NULL);

static SYSDEV_ATTR(dscr, 0600, show_dscr, store_dscr);

static SYSDEV_ATTR(purr, 0600, show_purr, store_purr);

static SYSDEV_ATTR(pir, 0400, show_pir, NULL);



unsigned long dscr_default = 0;

EXPORT_SYMBOL(dscr_default);
@@ -392,6 +394,9 @@ static void __cpuinit register_cpu_online(unsigned int cpu) 


	if (cpu_has_feature(CPU_FTR_DSCR))

		sysdev_create_file(s, &attr_dscr);



	if (cpu_has_feature(CPU_FTR_PPCAS_ARCH_V2))

		sysdev_create_file(s, &attr_pir);

#endif /* CONFIG_PPC64 */



	cacheinfo_cpu_online(cpu);
@@ -462,6 +467,9 @@ static void unregister_cpu_online(unsigned int cpu) 


	if (cpu_has_feature(CPU_FTR_DSCR))

		sysdev_remove_file(s, &attr_dscr);



	if (cpu_has_feature(CPU_FTR_PPCAS_ARCH_V2))

		sysdev_remove_file(s, &attr_pir);

#endif /* CONFIG_PPC64 */



	cacheinfo_cpu_offline(cpu);