cpupower: Remove mc and smt power aware scheduler info/settings
These kernel interfaces got removed by:
commit 8e7fbcbc22
Author: Peter Zijlstra <peterz@infradead.org>
Date: Mon Jan 9 11:28:35 2012 +0100
sched: Remove stale power aware scheduling remnants and dysfunctional knobs
No need to further keep them as userspace configurations.
Signed-off-by: Thomas Renninger <trenn@suse.de>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
parent
3fc5a0e51a
commit
7ea1bdb8e1
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@ -3,7 +3,7 @@
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cpupower\-info \- Shows processor power related kernel or hardware configurations
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.SH SYNOPSIS
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.ft B
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.B cpupower info [ \-b ] [ \-s ] [ \-m ]
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.B cpupower info [ \-b ]
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.SH DESCRIPTION
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\fBcpupower info \fP shows kernel configurations or processor hardware
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@ -3,7 +3,7 @@
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cpupower\-set \- Set processor power related kernel or hardware configurations
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.SH SYNOPSIS
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.ft B
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.B cpupower set [ \-b VAL ] [ \-s VAL ] [ \-m VAL ]
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.B cpupower set [ \-b VAL ]
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.SH DESCRIPTION
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@ -55,35 +55,6 @@ Use \fBcpupower -c all info -b\fP to verify.
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This options needs the msr kernel driver (CONFIG_X86_MSR) loaded.
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.RE
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.PP
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\-\-sched\-mc, \-m [ VAL ]
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.RE
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\-\-sched\-smt, \-s [ VAL ]
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.RS 4
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\-\-sched\-mc utilizes cores in one processor package/socket first before
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processes are scheduled to other processor packages/sockets.
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\-\-sched\-smt utilizes thread siblings of one processor core first before
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processes are scheduled to other cores.
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The impact on power consumption and performance (positiv or negativ) heavily
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depends on processor support for deep sleep states, frequency scaling and
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frequency boost modes and their dependencies between other thread siblings
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and processor cores.
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Taken over from kernel documentation:
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Adjust the kernel's multi-core scheduler support.
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Possible values are:
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.RS 2
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0 - No power saving load balance (default value)
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1 - Fill one thread/core/package first for long running threads
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2 - Also bias task wakeups to semi-idle cpu package for power
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savings
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.RE
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.SH "SEE ALSO"
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cpupower-info(1), cpupower-monitor(1), powertop(1)
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@ -18,8 +18,6 @@
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static struct option set_opts[] = {
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{ .name = "perf-bias", .has_arg = optional_argument, .flag = NULL, .val = 'b'},
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{ .name = "sched-mc", .has_arg = optional_argument, .flag = NULL, .val = 'm'},
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{ .name = "sched-smt", .has_arg = optional_argument, .flag = NULL, .val = 's'},
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{ },
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};
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@ -37,8 +35,6 @@ int cmd_info(int argc, char **argv)
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union {
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struct {
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int sched_mc:1;
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int sched_smt:1;
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int perf_bias:1;
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};
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int params;
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@ -49,23 +45,13 @@ int cmd_info(int argc, char **argv)
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textdomain(PACKAGE);
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/* parameter parsing */
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while ((ret = getopt_long(argc, argv, "msb", set_opts, NULL)) != -1) {
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while ((ret = getopt_long(argc, argv, "b", set_opts, NULL)) != -1) {
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switch (ret) {
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case 'b':
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if (params.perf_bias)
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print_wrong_arg_exit();
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params.perf_bias = 1;
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break;
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case 'm':
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if (params.sched_mc)
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print_wrong_arg_exit();
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params.sched_mc = 1;
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break;
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case 's':
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if (params.sched_smt)
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print_wrong_arg_exit();
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params.sched_smt = 1;
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break;
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default:
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print_wrong_arg_exit();
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}
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@ -78,25 +64,6 @@ int cmd_info(int argc, char **argv)
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if (bitmask_isallclear(cpus_chosen))
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bitmask_setbit(cpus_chosen, 0);
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if (params.sched_mc) {
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ret = sysfs_get_sched("mc");
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printf(_("System's multi core scheduler setting: "));
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if (ret < 0)
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/* if sysfs file is missing it's: errno == ENOENT */
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printf(_("not supported\n"));
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else
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printf("%d\n", ret);
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}
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if (params.sched_smt) {
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ret = sysfs_get_sched("smt");
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printf(_("System's thread sibling scheduler setting: "));
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if (ret < 0)
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/* if sysfs file is missing it's: errno == ENOENT */
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printf(_("not supported\n"));
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else
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printf("%d\n", ret);
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}
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/* Add more per cpu options here */
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if (!params.perf_bias)
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return ret;
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@ -19,8 +19,6 @@
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static struct option set_opts[] = {
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{ .name = "perf-bias", .has_arg = required_argument, .flag = NULL, .val = 'b'},
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{ .name = "sched-mc", .has_arg = required_argument, .flag = NULL, .val = 'm'},
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{ .name = "sched-smt", .has_arg = required_argument, .flag = NULL, .val = 's'},
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{ },
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};
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@ -38,13 +36,11 @@ int cmd_set(int argc, char **argv)
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union {
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struct {
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int sched_mc:1;
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int sched_smt:1;
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int perf_bias:1;
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};
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int params;
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} params;
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int sched_mc = 0, sched_smt = 0, perf_bias = 0;
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int perf_bias = 0;
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int ret = 0;
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setlocale(LC_ALL, "");
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params.params = 0;
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/* parameter parsing */
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while ((ret = getopt_long(argc, argv, "m:s:b:",
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while ((ret = getopt_long(argc, argv, "b:",
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set_opts, NULL)) != -1) {
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switch (ret) {
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case 'b':
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}
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params.perf_bias = 1;
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break;
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case 'm':
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if (params.sched_mc)
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print_wrong_arg_exit();
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sched_mc = atoi(optarg);
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if (sched_mc < 0 || sched_mc > 2) {
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printf(_("--sched-mc param out "
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"of range [0-%d]\n"), 2);
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print_wrong_arg_exit();
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}
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params.sched_mc = 1;
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break;
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case 's':
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if (params.sched_smt)
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print_wrong_arg_exit();
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sched_smt = atoi(optarg);
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if (sched_smt < 0 || sched_smt > 2) {
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printf(_("--sched-smt param out "
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"of range [0-%d]\n"), 2);
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print_wrong_arg_exit();
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}
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params.sched_smt = 1;
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break;
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default:
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print_wrong_arg_exit();
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}
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if (!params.params)
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print_wrong_arg_exit();
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if (params.sched_mc) {
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ret = sysfs_set_sched("mc", sched_mc);
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if (ret)
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fprintf(stderr, _("Error setting sched-mc %s\n"),
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(ret == -ENODEV) ? "not supported" : "");
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}
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if (params.sched_smt) {
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ret = sysfs_set_sched("smt", sched_smt);
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if (ret)
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fprintf(stderr, _("Error setting sched-smt %s\n"),
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(ret == -ENODEV) ? "not supported" : "");
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}
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/* Default is: set all CPUs */
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if (bitmask_isallclear(cpus_chosen))
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bitmask_setall(cpus_chosen);
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