perf_counter tools: Move perfstat supporting code into perfcounters.h
Signed-off-by: Wu Fengguang <fengguang.wu@intel.com>
Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
diff --git a/Documentation/perf_counter/perfcounters.h b/Documentation/perf_counter/perfcounters.h
index 8c1559b..0f3764a 100644
--- a/Documentation/perf_counter/perfcounters.h
+++ b/Documentation/perf_counter/perfcounters.h
@@ -16,6 +16,14 @@
#define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
+#define rdclock() \
+({ \
+ struct timespec ts; \
+ \
+ clock_gettime(CLOCK_MONOTONIC, &ts); \
+ ts.tv_sec * 1000000000ULL + ts.tv_nsec; \
+})
+
/*
* Pick up some kernel type conventions:
*/
@@ -135,3 +143,125 @@
return ret;
}
+static char *hw_event_names [] = {
+ "CPU cycles",
+ "instructions",
+ "cache references",
+ "cache misses",
+ "branches",
+ "branch misses",
+ "bus cycles",
+};
+
+static char *sw_event_names [] = {
+ "cpu clock ticks",
+ "task clock ticks",
+ "pagefaults",
+ "context switches",
+ "CPU migrations",
+};
+
+struct event_symbol {
+ int event;
+ char *symbol;
+};
+
+static struct event_symbol event_symbols [] = {
+ {PERF_COUNT_CPU_CYCLES, "cpu-cycles", },
+ {PERF_COUNT_CPU_CYCLES, "cycles", },
+ {PERF_COUNT_INSTRUCTIONS, "instructions", },
+ {PERF_COUNT_CACHE_REFERENCES, "cache-references", },
+ {PERF_COUNT_CACHE_MISSES, "cache-misses", },
+ {PERF_COUNT_BRANCH_INSTRUCTIONS, "branch-instructions", },
+ {PERF_COUNT_BRANCH_INSTRUCTIONS, "branches", },
+ {PERF_COUNT_BRANCH_MISSES, "branch-misses", },
+ {PERF_COUNT_BUS_CYCLES, "bus-cycles", },
+ {PERF_COUNT_CPU_CLOCK, "cpu-ticks", },
+ {PERF_COUNT_CPU_CLOCK, "ticks", },
+ {PERF_COUNT_TASK_CLOCK, "task-ticks", },
+ {PERF_COUNT_PAGE_FAULTS, "page-faults", },
+ {PERF_COUNT_PAGE_FAULTS, "faults", },
+ {PERF_COUNT_CONTEXT_SWITCHES, "context-switches", },
+ {PERF_COUNT_CONTEXT_SWITCHES, "cs", },
+ {PERF_COUNT_CPU_MIGRATIONS, "cpu-migrations", },
+ {PERF_COUNT_CPU_MIGRATIONS, "migrations", },
+};
+
+static int type_valid(int type)
+{
+ if (type >= PERF_HW_EVENTS_MAX)
+ return 0;
+ if (type <= PERF_SW_EVENTS_MIN)
+ return 0;
+
+ return 1;
+}
+
+static char *event_name(int ctr)
+{
+ int type = event_id[ctr];
+ static char buf[32];
+
+ if (event_raw[ctr]) {
+ sprintf(buf, "raw 0x%x", type);
+ return buf;
+ }
+ if (!type_valid(type))
+ return "unknown";
+
+ if (type >= 0)
+ return hw_event_names[type];
+
+ return sw_event_names[-type-1];
+}
+
+/*
+ * Each event can have multiple symbolic names.
+ * Symbolic names are (almost) exactly matched.
+ */
+static int match_event_symbols(char *str)
+{
+ unsigned int i;
+
+ if (isdigit(str[0]) || str[0] == '-')
+ return atoi(str);
+
+ for (i = 0; i < ARRAY_SIZE(event_symbols); i++) {
+ if (!strncmp(str, event_symbols[i].symbol,
+ strlen(event_symbols[i].symbol)))
+ return event_symbols[i].event;
+ }
+
+ return PERF_HW_EVENTS_MAX;
+}
+
+static void parse_events(char *str)
+{
+ int type, raw;
+
+again:
+ nr_counters++;
+ if (nr_counters == MAX_COUNTERS)
+ display_help();
+
+ raw = 0;
+ if (*str == 'r') {
+ raw = 1;
+ ++str;
+ type = strtol(str, NULL, 16);
+ } else {
+ type = match_event_symbols(str);
+ if (!type_valid(type))
+ display_help();
+ }
+
+ event_id[nr_counters] = type;
+ event_raw[nr_counters] = raw;
+
+ str = strstr(str, ",");
+ if (str) {
+ str++;
+ goto again;
+ }
+}
+