[POWERPC] Add PMC type to cputable

Add cputable entries for which type of PMC implementation the processor
has.

I've only filled in the current 64-bit processors, the unfilled default
value will have same behaviour as before so it can be done over time
as needed.

Also tidy up the dummy_perf implementation a bit, aggregating it into
one function with ifdefs instead of several.

Signed-off-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Paul Mackerras <paulus@samba.org>

1 files changed, 9 insertions, 26 deletions

diff --git a/arch/powerpc/kernel/pmc.c b/arch/powerpc/kernel/pmc.c
index 3d8f6f44641e..e40f6ddd98a4 100644
--- a/arch/powerpc/kernel/pmc.c
+++ b/arch/powerpc/kernel/pmc.c
@@ -19,38 +19,21 @@
 #include <asm/processor.h>
 #include <asm/pmc.h>
 
-#if defined(CONFIG_FSL_BOOKE) && !defined(CONFIG_E200)
-static void dummy_perf(struct pt_regs *regs)
-{
-        unsigned int pmgc0 = mfpmr(PMRN_PMGC0);
-
-        pmgc0 &= ~PMGC0_PMIE;
-        mtpmr(PMRN_PMGC0, pmgc0);
-}
-#elif defined(CONFIG_PPC64) || defined(CONFIG_6xx)
-
-#ifndef MMCR0_PMAO
-#define MMCR0_PMAO      0
+#ifndef MMCR0_PMA0
+#define MMCR0_PMA0      0
 #endif
 
-/* Ensure exceptions are disabled */
 static void dummy_perf(struct pt_regs *regs)
 {
-        unsigned int mmcr0 = mfspr(SPRN_MMCR0);
-
-        mmcr0 &= ~(MMCR0_PMXE|MMCR0_PMAO);
-        mtspr(SPRN_MMCR0, mmcr0);
-}
+#if defined(CONFIG_FSL_BOOKE) && !defined(CONFIG_E200)
+        mtpmr(PMRN_PMGC0, mfpmr(PMRN_PMGC0) & ~PMGC0_PMIE);
+#elif defined(CONFIG_PPC64) || defined(CONFIG_6xx)
+        mtspr(SPRN_MMCR0, mfspr(SPRN_MMCR0) & ~(MMCR0_PMXE|MMCR0_PMA0));
 #else
-/* Ensure exceptions are disabled */
-static void dummy_perf(struct pt_regs *regs)
-{
-        unsigned int mmcr0 = mfspr(SPRN_MMCR0);
-
-        mmcr0 &= ~(MMCR0_PMXE);
-        mtspr(SPRN_MMCR0, mmcr0);
-}
+        mtspr(SPRN_MMCR0, mfspr(SPRN_MMCR0) & ~MMCR0_PMXE);
 #endif
+}
+
 
 static DEFINE_SPINLOCK(pmc_owner_lock);
 static void *pmc_owner_caller; /* mostly for debugging */