perf_counter: powerpc: Implement generalized cache events for POWER processors

This adds tables of event codes for the generalized cache events for
all the currently supported powerpc processors: POWER{4,5,5+,6,7} and
PPC970*, plus powerpc-specific code to use these tables when a
generalized cache event is requested.

Signed-off-by: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
LKML-Reference: <18992.36430.933526.742969@drongo.ozlabs.ibm.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

1 files changed, 41 insertions, 0 deletions

diff --git a/arch/powerpc/kernel/ppc970-pmu.c b/arch/powerpc/kernel/ppc970-pmu.c
index eed47c4523f1..336adf1736af 100644
--- a/arch/powerpc/kernel/ppc970-pmu.c
+++ b/arch/powerpc/kernel/ppc970-pmu.c
@@ -427,6 +427,46 @@ static int ppc970_generic_events[] = {
         [PERF_COUNT_BRANCH_MISSES] = 0x327,             /* PM_GRP_BR_MPRED */
 };
 
+#define C(x)    PERF_COUNT_HW_CACHE_##x
+
+/*
+ * Table of generalized cache-related events.
+ * 0 means not supported, -1 means nonsensical, other values
+ * are event codes.
+ */
+static int ppc970_cache_events[C(MAX)][C(OP_MAX)][C(RESULT_MAX)] = {
+        [C(L1D)] = {            /*      RESULT_ACCESS   RESULT_MISS */
+                [C(OP_READ)] = {        0x8810,         0x3810  },
+                [C(OP_WRITE)] = {       0x7810,         0x813   },
+                [C(OP_PREFETCH)] = {    0x731,          0       },
+        },
+        [C(L1I)] = {            /*      RESULT_ACCESS   RESULT_MISS */
+                [C(OP_READ)] = {        0,              0       },
+                [C(OP_WRITE)] = {       -1,             -1      },
+                [C(OP_PREFETCH)] = {    0,              0       },
+        },
+        [C(L2)] = {             /*      RESULT_ACCESS   RESULT_MISS */
+                [C(OP_READ)] = {        0,              0       },
+                [C(OP_WRITE)] = {       0,              0       },
+                [C(OP_PREFETCH)] = {    0x733,          0       },
+        },
+        [C(DTLB)] = {           /*      RESULT_ACCESS   RESULT_MISS */
+                [C(OP_READ)] = {        0,              0x704   },
+                [C(OP_WRITE)] = {       -1,             -1      },
+                [C(OP_PREFETCH)] = {    -1,             -1      },
+        },
+        [C(ITLB)] = {           /*      RESULT_ACCESS   RESULT_MISS */
+                [C(OP_READ)] = {        0,              0x700   },
+                [C(OP_WRITE)] = {       -1,             -1      },
+                [C(OP_PREFETCH)] = {    -1,             -1      },
+        },
+        [C(BPU)] = {            /*      RESULT_ACCESS   RESULT_MISS */
+                [C(OP_READ)] = {        0x431,          0x327   },
+                [C(OP_WRITE)] = {       -1,             -1      },
+                [C(OP_PREFETCH)] = {    -1,             -1      },
+        },
+};
+
 struct power_pmu ppc970_pmu = {
         .n_counter = 8,
         .max_alternatives = 2,
@@ -438,4 +478,5 @@ struct power_pmu ppc970_pmu = {
         .disable_pmc = p970_disable_pmc,
         .n_generic = ARRAY_SIZE(ppc970_generic_events),
         .generic_events = ppc970_generic_events,
+        .cache_events = &ppc970_cache_events,
 };