perfcounters/powerpc: add support for POWER4 processors

Impact: more hardware support

This adds the back-end for the PMU on the POWER4 and POWER4+ processors
(GP and GQ).  This is quite similar to the PPC970, with 8 PMCs, but has
fewer events than the PPC970.

Signed-off-by: Paul Mackerras <paulus@samba.org>

1 files changed, 5 insertions, 0 deletions

diff --git a/arch/powerpc/kernel/perf_counter.c b/arch/powerpc/kernel/perf_counter.c
index 162f3981fa27..0e33d27cd464 100644
--- a/arch/powerpc/kernel/perf_counter.c
+++ b/arch/powerpc/kernel/perf_counter.c
@@ -824,6 +824,7 @@ void hw_perf_counter_setup(int cpu)
         cpuhw->mmcr[0] = MMCR0_FC;
 }
 
+extern struct power_pmu power4_pmu;
 extern struct power_pmu ppc970_pmu;
 extern struct power_pmu power5_pmu;
 extern struct power_pmu power5p_pmu;
@@ -841,6 +842,10 @@ static int init_perf_counters(void)
         /* XXX should get this from cputable */
         pvr = mfspr(SPRN_PVR);
         switch (PVR_VER(pvr)) {
+        case PV_POWER4:
+        case PV_POWER4p:
+                ppmu = &power4_pmu;
+                break;
         case PV_970:
         case PV_970FX:
         case PV_970MP: