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c2294c1496
Read out powercap zone information via:
cpupower powercap-info
and show the zone hierarchy to the user:
./cpupower powercap-info
Driver: intel-rapl
Powercap domain hierarchy:
Zone: package-0 (enabled)
Power consumption can be monitored in micro Watts
Zone: core (disabled)
Power consumption can be monitored in micro Watts
Zone: uncore (disabled)
Power consumption can be monitored in micro Watts
Zone: dram (disabled)
Power consumption can be monitored in micro Watts
There is a dummy -a option for powercap-info which can/should be used to
show more detailed info later. Like that other args can be added easily
later as well.
A enable/disable option via powercap-set subcommand is also an enhancement
for later.
Also not all RAPL domains are shown. The func walking through RAPL
subdomains is restricted and hardcoded to: "intel-rapl/intel-rapl:0"
On my system above powercap domains map to:
intel-rapl/intel-rapl:0
-> pack (age-0)
intel-rapl/intel-rapl:0/intel-rapl:0:0
-> core
intel-rapl/intel-rapl:0/intel-rapl:0:1
-> uncore
Missing ones on my system are:
intel-rapl-mmio/intel-rapl-mmio:0
-> pack (age-0)
intel-rapl/intel-rapl:1
-> psys
This could get enhanced in:
struct powercap_zone *powercap_init_zones()
and adopted to walk through all intel-rapl zones, but
also to other powercap drivers like dtpm
(Dynamic Thermal Power Management framework),
cmp with: drivers/powercap/dtpm_*
Signed-off-by: Thomas Renninger <trenn@suse.de>
CC: Shuah Khan <skhan@linuxfoundation.org>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
118 lines
2.2 KiB
C
118 lines
2.2 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* (C) 2016 SUSE Software Solutions GmbH
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* Thomas Renninger <trenn@suse.de>
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*/
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#include <unistd.h>
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#include <stdio.h>
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#include <errno.h>
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#include <stdlib.h>
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#include <stdint.h>
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#include <string.h>
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#include <getopt.h>
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#include "powercap.h"
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#include "helpers/helpers.h"
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int powercap_show_all;
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static struct option info_opts[] = {
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{ "all", no_argument, NULL, 'a'},
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{ },
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};
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static int powercap_print_one_zone(struct powercap_zone *zone)
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{
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int mode, i, ret = 0;
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char pr_prefix[1024] = "";
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for (i = 0; i < zone->tree_depth && i < POWERCAP_MAX_TREE_DEPTH; i++)
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strcat(pr_prefix, "\t");
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printf("%sZone: %s", pr_prefix, zone->name);
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ret = powercap_zone_get_enabled(zone, &mode);
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if (ret < 0)
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return ret;
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printf(" (%s)\n", mode ? "enabled" : "disabled");
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if (zone->has_power_uw)
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printf(_("%sPower can be monitored in micro Jules\n"),
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pr_prefix);
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if (zone->has_energy_uj)
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printf(_("%sPower can be monitored in micro Watts\n"),
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pr_prefix);
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printf("\n");
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if (ret != 0)
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return ret;
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return ret;
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}
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static int powercap_show(void)
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{
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struct powercap_zone *root_zone;
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char line[MAX_LINE_LEN] = "";
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int ret, val;
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ret = powercap_get_driver(line, MAX_LINE_LEN);
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if (ret < 0) {
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printf(_("No powercapping driver loaded\n"));
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return ret;
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}
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printf("Driver: %s\n", line);
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ret = powercap_get_enabled(&val);
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if (ret < 0)
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return ret;
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if (!val) {
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printf(_("Powercapping is disabled\n"));
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return -1;
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}
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printf(_("Powercap domain hierarchy:\n\n"));
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root_zone = powercap_init_zones();
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if (root_zone == NULL) {
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printf(_("No powercap info found\n"));
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return 1;
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}
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powercap_walk_zones(root_zone, powercap_print_one_zone);
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return 0;
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}
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int cmd_cap_set(int argc, char **argv)
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{
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return 0;
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};
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int cmd_cap_info(int argc, char **argv)
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{
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int ret = 0, cont = 1;
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do {
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ret = getopt_long(argc, argv, "a", info_opts, NULL);
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switch (ret) {
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case '?':
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cont = 0;
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break;
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case -1:
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cont = 0;
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break;
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case 'a':
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powercap_show_all = 1;
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break;
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default:
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fprintf(stderr, _("invalid or unknown argument\n"));
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return EXIT_FAILURE;
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}
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} while (cont);
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powercap_show();
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return 0;
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}
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