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authorAnanth N Mavinakayanahalli <ananth@in.ibm.com>2011-11-10 19:58:53 +0000
committerBenjamin Herrenschmidt <benh@kernel.crashing.org>2011-11-25 14:53:23 +1100
commit595fe91447b03cb72c97f45bc5db30fd73b66b38 (patch)
tree3dbfd08b962eb6215d17c105e6b743b6d920ebaf /arch/powerpc/kernel/sysfs.c
parent184cd4a3b962a4769889615430eaf40076b97969 (diff)
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: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc/kernel/sysfs.c')
-rw-r--r--arch/powerpc/kernel/sysfs.c8
1 files changed, 8 insertions, 0 deletions
diff --git a/arch/powerpc/kernel/sysfs.c b/arch/powerpc/kernel/sysfs.c
index ce035c1905f0..f579be552094 100644
--- a/arch/powerpc/kernel/sysfs.c
+++ b/arch/powerpc/kernel/sysfs.c
@@ -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);