perf mem: Add --ldlat option

[cascardo/linux.git] / tools / perf / util / mem-events.c

diff --git a/tools/perf/util/mem-events.c b/tools/perf/util/mem-events.c
index 75465f8..bbc368e 100644 (file)
--- a/tools/perf/util/mem-events.c
+++ b/tools/perf/util/mem-events.c
@@ -10,18 +10,33 @@
 #include "debug.h"
 #include "symbol.h"
 
+unsigned int perf_mem_events__loads_ldlat = 30;
+
 #define E(t, n, s) { .tag = t, .name = n, .sysfs_name = s }
 
 struct perf_mem_event perf_mem_events[PERF_MEM_EVENTS__MAX] = {
-       E("ldlat-loads",        "cpu/mem-loads,ldlat=30/P",     "mem-loads"),
+       E("ldlat-loads",        "cpu/mem-loads,ldlat=%u/P",     "mem-loads"),
        E("ldlat-stores",       "cpu/mem-stores/P",             "mem-stores"),
 };
 #undef E
 
 #undef E
 
+static char mem_loads_name[100];
+static bool mem_loads_name__init;
+
 char *perf_mem_events__name(int i)
 {
+       if (i == PERF_MEM_EVENTS__LOAD) {
+               if (!mem_loads_name__init) {
+                       mem_loads_name__init = true;
+                       scnprintf(mem_loads_name, sizeof(mem_loads_name),
+                                 perf_mem_events[i].name,
+                                 perf_mem_events__loads_ldlat);
+               }
+               return mem_loads_name;
+       }
+
        return (char *)perf_mem_events[i].name;
 }