cpupower: rapl monitor - shows the used power consumption in uj for each rapl domain

cpupower monitor -m RAPL

    | RAPL
 CPU| pack | dram | core | unco
   0|11599641|308837|10748813|  3662
   2|11599641|308837|10748813|  3662
   1|11599641|308837|10748813|  3662
   3|11599641|308837|10748813|  3662

index a81fd88fe315..2134fcdc739d 100644
@@ -131,6 +131,7 @@ UTIL_OBJS =  utils/helpers/amd.o utils/helpers/msr.o \
 	utils/idle_monitor/hsw_ext_idle.o \
 	utils/idle_monitor/amd_fam14h_idle.o utils/idle_monitor/

cpuidle_sysfs.o \
utils/idle_monitor/mperf_monitor.o utils/idle_monitor/cpupower-
monitor.o \
+ utils/idle_monitor/rapl_monitor.o \
utils/cpupower.o utils/cpufreq-info.o utils/cpufreq-set.o \
utils/cpupower-set.o utils/cpupower-info.o utils/cpuidle-info.o \
utils/cpuidle-set.o utils/powercap-info.o

tools/power/cpupower/utils/idle_monitor/cpupower-monitor.c index 7c77045fef52..075e766ff1f3 100644

@@ -459,9 +459,10 @@ int cmd_monitor(int argc, char **argv)
 			print_results(1, cpu);
 	}
 
-	for (num = 0; num < avail_monitors; num++)
-		monitors[num]->unregister();
-
+	for (num = 0; num < avail_monitors; num++) {
+		if (monitors[num]->unregister)
+			monitors[num]->unregister();
+	}
 	cpu_topology_release(cpu_top);
 	return 0;
 }

tools/power/cpupower/utils/idle_monitor/idle_monitors.def index 0d6ba4dbb9c7..7c926e90c87e 100644

@@ -4,5 +4,6 @@ DEF(intel_nhm)
 DEF(intel_snb)
 DEF(intel_hsw_ext)
 DEF(mperf)
+DEF(rapl)
 #endif
 DEF(cpuidle_sysfs)

power/cpupower/utils/idle_monitor/rapl_monitor.c
new file mode 100644
index 000000000000..31e9cd414930

@@ -0,0 +1,141 @@
+/*
+ *  (C) 2016      Thomas Renninger <[email protected]>
+ *
+ *  Licensed under the terms of the GNU GPL License version 2.
+ *
+ */
+
+#if defined(__i386__) || defined(__x86_64__)
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdint.h>
+#include <time.h>
+#include <string.h>
+
+#include <pci/pci.h>
+
+#include "idle_monitor/cpupower-monitor.h"
+#include "helpers/helpers.h"
+#include "powercap.h"
+
+#define MAX_RAPL_ZONES 10
+
+int rapl_zone_count = 0;
+cstate_t rapl_zones[MAX_RAPL_ZONES];
+struct powercap_zone *rapl_zones_pt[MAX_RAPL_ZONES] = { 0 };
+
+unsigned long long rapl_zone_previous_count[MAX_RAPL_ZONES];
+unsigned long long rapl_zone_current_count[MAX_RAPL_ZONES];
+unsigned long long rapl_max_count;
+
+static int rapl_get_count_uj(unsigned int id, unsigned long long *count,
+			     unsigned int cpu)
+{
+	if (rapl_zones_pt[id] == NULL)
+		/* error */
+		return -1;
+
+	*count = rapl_zone_current_count[id] - 

rapl_zone_previous_count[id];
+
+ return 0;
+}
+
+static int powercap_count_zones(struct powercap_zone *zone) +{
+ if (rapl_zone_count >= MAX_RAPL_ZONES)
+ return -1;
+
+ if (!zone->has_energy_uj)
+ return 0;
+
+ strncpy(rapl_zones[rapl_zone_count].name, zone->name,
CSTATE_NAME_LEN - 1);
+ strcpy(rapl_zones[rapl_zone_count].desc, "");
+ rapl_zones[rapl_zone_count].id = rapl_zone_count;
+ rapl_zones[rapl_zone_count].range = RANGE_MACHINE;
+ rapl_zones[rapl_zone_count].get_count = rapl_get_count_uj;
+ rapl_zones_pt[rapl_zone_count] = zone;
+ rapl_zone_count++;
+
+ return 0;
+}
+
+static int rapl_start(void)
+{
+ int i, ret;
+ uint64_t uj_val;
+
+ for (i = 0; i < rapl_zone_count; i++) {
+ ret = powercap_get_energy_uj(rapl_zones_pt[i], &uj_val);
+ if (ret)
+ return ret;
+ rapl_zone_previous_count[i] = uj_val;
+ }
+
+ return 0;
+}
+
+static int rapl_stop(void)
+{
+ int i;
+ uint64_t uj_val;
+
+ for (i = 0; i < rapl_zone_count; i++) {
+ int ret;
+ ret = powercap_get_energy_uj(rapl_zones_pt[i], &uj_val);
+ if (ret)
+ return ret;
+ rapl_zone_current_count[i] = uj_val;
+ if (rapl_max_count < uj_val)
+ rapl_max_count = uj_val -
rapl_zone_previous_count[i];
+ }
+ return 0;
+}
+
+struct cpuidle_monitor *rapl_register(void)
+{
+ struct powercap_zone *root_zone;
+ char line[MAX_LINE_LEN] = "";
+ int ret, val;
+
+ ret = powercap_get_driver(line, MAX_LINE_LEN);
+ if (ret < 0) {
+ dprint("No powercapping driver loaded\n");
+ return NULL;
+ }
+
+ dprint("Driver: %s\n", line);
+ ret = powercap_get_enabled(&val);
+ if (ret < 0)
+ return NULL;
+ if (!val) {
+ dprint("Powercapping is disabled\n");
+ return NULL;
+ }
+
+ dprint("Powercap domain hierarchy:\n\n");
+ root_zone = powercap_init_zones();
+
+ if (root_zone == NULL) {
+ dprint("No powercap info found\n");
+ return NULL;
+ }
+
+ powercap_walk_zones(root_zone, powercap_count_zones);
+ rapl_monitor.hw_states_num = rapl_zone_count;
+
+ return &rapl_monitor;
+}
+
+struct cpuidle_monitor rapl_monitor = {
+ .name = "RAPL",
+ .hw_states = rapl_zones,
+ .hw_states_num = 0,
+ .start = rapl_start,
+ .stop = rapl_stop,
+ .do_register = rapl_register,
+ .flags.needs_root = 0,
+ .overflow_s = 60 * 60 * 24 * 100, /* To be implemented
*/
+};
+
+#endif

2.33.0

This is also corrupted format:

In the email it wasn't clear to me, however the corruption was very clear in patchwork view:

https://patchwork.kernel.org/project/linux-pm/patch/3720988.KDN6dyLT6n@c100/

thanks,
-- Shuah