From 595fe91447b03cb72c97f45bc5db30fd73b66b38 Mon Sep 17 00:00:00 2001 From: Ananth N Mavinakayanahalli Date: Thu, 10 Nov 2011 19:58:53 +0000 Subject: [PATCH] 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 --- arch/powerpc/kernel/sysfs.c | 8 ++++++++ 1 file changed, 8 insertions(+) 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);