perf tools: Add missing 'node' alias to the hw_cache[] array

Add "node" as a simple alias for NODE cache events.

The addition of NODE cache events broke the parse_alias
function, so any mismatched event caused the segfault, like:

  # ./perf stat -e krava ls

The hw_cache/hw_cache_op/hw_cache_result arrays needs to follow
PERF_COUNT_HW_CACHE_*MAX enums. Adding those MAXs to be size
of those arrays, so possible ommision in future wil not lead to
segfault.

Adding read/write/prefetch as allowed operations for node cache
event.
Signed-off-by: NJiri Olsa <jolsa@redhat.com>
Acked-by: NPeter Zijlstra <a.p.zijlstra@chello.nl>
Cc: acme@redhat.com
Link: http://lkml.kernel.org/r/20110713205818.GB7827@jolsa.brq.redhat.comSigned-off-by: NIngo Molnar <mingo@elte.hu>

tools/perf/util/parse-events.c

@@ -86,22 +86,24 @@ static const char *sw_event_names[PERF_COUNT_SW_MAX] = {
 
 #define MAX_ALIASES 8
 
-static const char *hw_cache[][MAX_ALIASES] = {
+static const char *hw_cache[PERF_COUNT_HW_CACHE_MAX][MAX_ALIASES] = {
  { "L1-dcache",	"l1-d",		"l1d",		"L1-data",		},
  { "L1-icache",	"l1-i",		"l1i",		"L1-instruction",	},
- { "LLC",	"L2"							},
+ { "LLC",	"L2",							},
  { "dTLB",	"d-tlb",	"Data-TLB",				},
  { "iTLB",	"i-tlb",	"Instruction-TLB",			},
  { "branch",	"branches",	"bpu",		"btb",		"bpc",	},
+ { "node",								},
 };
 
-static const char *hw_cache_op[][MAX_ALIASES] = {
+static const char *hw_cache_op[PERF_COUNT_HW_CACHE_OP_MAX][MAX_ALIASES] = {
  { "load",	"loads",	"read",					},
  { "store",	"stores",	"write",				},
  { "prefetch",	"prefetches",	"speculative-read", "speculative-load",	},
 };
 
-static const char *hw_cache_result[][MAX_ALIASES] = {
+static const char *hw_cache_result[PERF_COUNT_HW_CACHE_RESULT_MAX]
+				  [MAX_ALIASES] = {
  { "refs",	"Reference",	"ops",		"access",		},
  { "misses",	"miss",							},
 };
@@ -124,6 +126,7 @@ static unsigned long hw_cache_stat[C(MAX)] = {
  [C(DTLB)]	= (CACHE_READ | CACHE_WRITE | CACHE_PREFETCH),
  [C(ITLB)]	= (CACHE_READ),
  [C(BPU)]	= (CACHE_READ),
+ [C(NODE)]	= (CACHE_READ | CACHE_WRITE | CACHE_PREFETCH),
 };
 
 #define for_each_subsystem(sys_dir, sys_dirent, sys_next)	       \
@@ -393,7 +396,7 @@ parse_generic_hw_event(const char **str, struct perf_event_attr *attr)
 						PERF_COUNT_HW_CACHE_OP_MAX);
 			if (cache_op >= 0) {
 				if (!is_cache_op_valid(cache_type, cache_op))
-					return 0;
+					return EVT_FAILED;
 				continue;
 			}
 		}