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authorSrinivas Pandruvada <srinivas.pandruvada@linux.intel.com>2021-03-29 10:24:41 -0700
committerHans de Goede <hdegoede@redhat.com>2021-04-07 19:47:22 +0200
commit0d3dfd75708117cedf0cea200e9c6fa266129fb5 (patch)
treecbd666e9dece2800b4d7f5fdcbf6f62df464e844 /tools/power
parentb84733a1c52c2f93897a3cbbc1745c06250a4432 (diff)
tools/power/x86/intel-speed-select: Add options to force online
It is possible that users manually offlined CPUs via sysfs interface and then started this utility. In this case we will not be able to get package and die id of the those CPUs. So add an option to force online if required for some commands. Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Diffstat (limited to 'tools/power')
-rw-r--r--tools/power/x86/intel-speed-select/isst-config.c23
1 files changed, 21 insertions, 2 deletions
diff --git a/tools/power/x86/intel-speed-select/isst-config.c b/tools/power/x86/intel-speed-select/isst-config.c
index 7b98a4a52d9e..398938879e9f 100644
--- a/tools/power/x86/intel-speed-select/isst-config.c
+++ b/tools/power/x86/intel-speed-select/isst-config.c
@@ -381,6 +381,18 @@ static void set_cpu_online_offline(int cpu, int state)
close(fd);
}
+static void force_all_cpus_online(void)
+{
+ int i;
+
+ fprintf(stderr, "Forcing all CPUs online\n");
+
+ for (i = 0; i < topo_max_cpus; ++i)
+ set_cpu_online_offline(i, 1);
+
+ unlink("/var/run/isst_cpu_topology.dat");
+}
+
#define MAX_PACKAGE_COUNT 8
#define MAX_DIE_PER_PACKAGE 2
static void for_each_online_package_in_set(void (*callback)(int, void *, void *,
@@ -2767,6 +2779,7 @@ static void usage(void)
printf("\t[-f|--format] : output format [json|text]. Default: text\n");
printf("\t[-h|--help] : Print help\n");
printf("\t[-i|--info] : Print platform information\n");
+ printf("\t[-a|--all-cpus-online] : Force online every CPU in the system\n");
printf("\t[-o|--out] : Output file\n");
printf("\t\t\tDefault : stderr\n");
printf("\t[-p|--pause] : Delay between two mail box commands in milliseconds\n");
@@ -2804,11 +2817,12 @@ static void cmdline(int argc, char **argv)
const char *pathname = "/dev/isst_interface";
char *ptr;
FILE *fp;
- int opt;
+ int opt, force_cpus_online = 0;
int option_index = 0;
int ret;
static struct option long_options[] = {
+ { "all-cpus-online", no_argument, 0, 'a' },
{ "cpu", required_argument, 0, 'c' },
{ "debug", no_argument, 0, 'd' },
{ "format", required_argument, 0, 'f' },
@@ -2844,9 +2858,12 @@ static void cmdline(int argc, char **argv)
}
progname = argv[0];
- while ((opt = getopt_long_only(argc, argv, "+c:df:hio:v", long_options,
+ while ((opt = getopt_long_only(argc, argv, "+c:df:hio:va", long_options,
&option_index)) != -1) {
switch (opt) {
+ case 'a':
+ force_cpus_online = 1;
+ break;
case 'c':
parse_cpu_command(optarg);
break;
@@ -2896,6 +2913,8 @@ static void cmdline(int argc, char **argv)
exit(0);
}
set_max_cpu_num();
+ if (force_cpus_online)
+ force_all_cpus_online();
store_cpu_topology();
set_cpu_present_cpu_mask();
set_cpu_target_cpu_mask();