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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-changelog] [xen-unstable] xenpm: add cpu frequency control interface, through which user can
# HG changeset patch
# User Keir Fraser <keir.fraser@xxxxxxxxxx>
# Date 1229433265 0
# Node ID a76b4e00e1862035240ec6403a8f081be61b1e2b
# Parent fd720db486755948daf39046e7fa2941ac78d377
xenpm: add cpu frequency control interface, through which user can
tune the parameters manually.
Now, xenpm can be invoked with the following options:
Usage:
xenpm get-cpuidle-states [cpuid]: list cpu idle information on
CPU cpuid or all CPUs.
xenpm get-cpufreq-states [cpuid]: list cpu frequency
information on CPU cpuid or all CPUs.
xenpm get-cpufreq-para [cpuid]: list cpu frequency information
on CPU cpuid or all CPUs.
xenpm set-scaling-maxfreq <cpuid> <HZ>: set max cpu frequency
<HZ> on CPU <cpuid>.
xenpm set-scaling-minfreq <cpuid> <HZ>: set min cpu frequency
<HZ> on CPU <cpuid>.
xenpm set-scaling-governor <cpuid> <name>: set scaling governor
on CPU <cpuid>.
xenpm set-scaling-speed <cpuid> <num>: set scaling speed on CPU
<cpuid>.
xenpm set-sampling-rate <cpuid> <num>: set sampling rate on CPU
<cpuid>.
xenpm set-up-threshold <cpuid> <num>: set up threshold on CPU
<cpuid>.
To ease the use of this tool, the shortcut option is supported,
i.e. `xenpm get-cpui' is equal to `xenpm get-cpuidle-states'.
Signed-off-by: Guanqun Lu <guanqun.lu@xxxxxxxxx>
---
tools/misc/xenpm.c | 744 ++++++++++++++++++++++++++++++++++++++++-------------
1 files changed, 568 insertions(+), 176 deletions(-)
diff -r fd720db48675 -r a76b4e00e186 tools/misc/xenpm.c
--- a/tools/misc/xenpm.c Tue Dec 16 12:04:13 2008 +0000
+++ b/tools/misc/xenpm.c Tue Dec 16 13:14:25 2008 +0000
@@ -16,199 +16,591 @@
* Place - Suite 330, Boston, MA 02111-1307 USA.
*/
+/* to eliminate warning on `strndup' */
+#define _GNU_SOURCE
+
#include <stdio.h>
#include <stdlib.h>
+#include <string.h>
#include <getopt.h>
#include <errno.h>
#include <xenctrl.h>
#include <inttypes.h>
-int main(int argc, char **argv)
-{
+#define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0]))
+
+/* help message */
+void show_help(void)
+{
+ fprintf(stderr,
+ "Usage:\n"
+ " xenpm get-cpuidle-states [cpuid]: list cpu idle
information on CPU cpuid or all CPUs.\n"
+ " xenpm get-cpufreq-states [cpuid]: list cpu frequency
information on CPU cpuid or all CPUs.\n"
+ " xenpm get-cpufreq-para [cpuid]: list cpu frequency
information on CPU cpuid or all CPUs.\n"
+ " xenpm set-scaling-maxfreq <cpuid> <HZ>: set max cpu
frequency <HZ> on CPU <cpuid>.\n"
+ " xenpm set-scaling-minfreq <cpuid> <HZ>: set min cpu
frequency <HZ> on CPU <cpuid>.\n"
+ " xenpm set-scaling-governor <cpuid> <name>: set scaling
governor on CPU <cpuid>.\n"
+ " xenpm set-scaling-speed <cpuid> <num>: set scaling speed
on CPU <cpuid>.\n"
+ " xenpm set-sampling-rate <cpuid> <num>: set sampling rate
on CPU <cpuid>.\n"
+ " xenpm set-up-threshold <cpuid> <num>: set up threshold on
CPU <cpuid>.\n");
+}
+
+/* wrapper function */
+int help_func(int xc_fd, int cpuid, uint32_t value)
+{
+ show_help();
+ return 0;
+}
+
+/* show cpu idle information on CPU cpuid */
+static int show_cx_cpuid(int xc_fd, int cpuid)
+{
+ int i, ret = 0;
+ int max_cx_num = 0;
+ struct xc_cx_stat cxstatinfo, *cxstat = &cxstatinfo;
+
+ ret = xc_pm_get_max_cx(xc_fd, cpuid, &max_cx_num);
+ if ( ret )
+ {
+ if ( errno == ENODEV )
+ {
+ fprintf(stderr, "Xen cpuidle is not enabled!\n");
+ return -ENODEV;
+ }
+ else
+ {
+ fprintf(stderr, "[CPU%d] failed to get max C-state\n", cpuid);
+ return -EINVAL;
+ }
+ }
+
+ cxstat->triggers = malloc(max_cx_num * sizeof(uint64_t));
+ if ( !cxstat->triggers )
+ {
+ fprintf(stderr, "[CPU%d] failed to malloc for C-states triggers\n",
cpuid);
+ return -ENOMEM;
+ }
+ cxstat->residencies = malloc(max_cx_num * sizeof(uint64_t));
+ if ( !cxstat->residencies )
+ {
+ fprintf(stderr, "[CPU%d] failed to malloc for C-states residencies\n",
cpuid);
+ free(cxstat->triggers);
+ return -ENOMEM;
+ }
+
+ ret = xc_pm_get_cxstat(xc_fd, cpuid, cxstat);
+ if( ret )
+ {
+ fprintf(stderr, "[CPU%d] failed to get C-states statistics "
+ "information\n", cpuid);
+ free(cxstat->triggers);
+ free(cxstat->residencies);
+ return -EINVAL;
+ }
+
+ printf("cpu id : %d\n", cpuid);
+ printf("total C-states : %d\n", cxstat->nr);
+ printf("idle time(ms) : %"PRIu64"\n",
+ cxstat->idle_time/1000000UL);
+ for ( i = 0; i < cxstat->nr; i++ )
+ {
+ printf("C%d : transition [%020"PRIu64"]\n",
+ i, cxstat->triggers[i]);
+ printf(" residency [%020"PRIu64" ms]\n",
+ cxstat->residencies[i]*1000000UL/3579/1000000UL);
+ }
+
+ free(cxstat->triggers);
+ free(cxstat->residencies);
+
+ printf("\n");
+ return 0;
+}
+
+int cxstates_func(int xc_fd, int cpuid, uint32_t value)
+{
+ int ret = 0;
+ xc_physinfo_t physinfo = { 0 };
+
+ if ( cpuid < 0 )
+ {
+ /* show cxstates on all cpu */
+ ret = xc_physinfo(xc_fd, &physinfo);
+ if ( ret )
+ {
+ fprintf(stderr, "failed to get the processor information\n");
+ }
+ else
+ {
+ int i;
+ for ( i = 0; i < physinfo.nr_cpus; i++ )
+ {
+ if ( (ret = show_cx_cpuid(xc_fd, i)) == -ENODEV )
+ break;
+ }
+ }
+ }
+ else
+ ret = show_cx_cpuid(xc_fd, cpuid);
+
+ return ret;
+}
+
+/* show cpu frequency information on CPU cpuid */
+static int show_px_cpuid(int xc_fd, int cpuid)
+{
+ int i, ret = 0;
+ int max_px_num = 0;
+ struct xc_px_stat pxstatinfo, *pxstat = &pxstatinfo;
+
+ ret = xc_pm_get_max_px(xc_fd, cpuid, &max_px_num);
+ if ( ret )
+ {
+ if ( errno == ENODEV )
+ {
+ printf("Xen cpufreq is not enabled!\n");
+ return -ENODEV;
+ }
+ else
+ {
+ fprintf(stderr, "[CPU%d] failed to get max P-state\n", cpuid);
+ return -EINVAL;
+ }
+ }
+
+ pxstat->trans_pt = malloc(max_px_num * max_px_num *
+ sizeof(uint64_t));
+ if ( !pxstat->trans_pt )
+ {
+ fprintf(stderr, "[CPU%d] failed to malloc for P-states transition
table\n", cpuid);
+ return -ENOMEM;
+ }
+ pxstat->pt = malloc(max_px_num * sizeof(struct xc_px_val));
+ if ( !pxstat->pt )
+ {
+ fprintf(stderr, "[CPU%d] failed to malloc for P-states table\n",
cpuid);
+ free(pxstat->trans_pt);
+ return -ENOMEM;
+ }
+
+ ret = xc_pm_get_pxstat(xc_fd, cpuid, pxstat);
+ if( ret )
+ {
+ fprintf(stderr, "[CPU%d] failed to get P-states statistics
information\n", cpuid);
+ free(pxstat->trans_pt);
+ free(pxstat->pt);
+ return -ENOMEM;
+ }
+
+ printf("cpu id : %d\n", cpuid);
+ printf("total P-states : %d\n", pxstat->total);
+ printf("usable P-states : %d\n", pxstat->usable);
+ printf("current frequency : %"PRIu64" MHz\n",
+ pxstat->pt[pxstat->cur].freq);
+ for ( i = 0; i < pxstat->total; i++ )
+ {
+ if ( pxstat->cur == i )
+ printf("*P%d", i);
+ else
+ printf("P%d ", i);
+ printf(" : freq [%04"PRIu64" MHz]\n",
+ pxstat->pt[i].freq);
+ printf(" transition [%020"PRIu64"]\n",
+ pxstat->pt[i].count);
+ printf(" residency [%020"PRIu64" ms]\n",
+ pxstat->pt[i].residency/1000000UL);
+ }
+
+ free(pxstat->trans_pt);
+ free(pxstat->pt);
+
+ printf("\n");
+ return 0;
+}
+
+int pxstates_func(int xc_fd, int cpuid, uint32_t value)
+{
+ int ret = 0;
+ xc_physinfo_t physinfo = { 0 };
+
+ if ( cpuid < 0 )
+ {
+ ret = xc_physinfo(xc_fd, &physinfo);
+ if ( ret )
+ {
+ fprintf(stderr, "failed to get the processor information\n");
+ }
+ else
+ {
+ int i;
+ for ( i = 0; i < physinfo.nr_cpus; i++ )
+ {
+ if ( (ret = show_px_cpuid(xc_fd, i)) == -ENODEV )
+ break;
+ }
+ }
+ }
+ else
+ ret = show_px_cpuid(xc_fd, cpuid);
+
+ return ret;
+}
+
+/* print out parameters about cpu frequency */
+static void print_cpufreq_para(int cpuid, struct xc_get_cpufreq_para
*p_cpufreq)
+{
+ int i;
+
+ printf("cpu id : %d\n", cpuid);
+
+ printf("affected_cpus :");
+ for ( i = 0; i < p_cpufreq->cpu_num; i++ )
+ if ( i == cpuid )
+ printf(" *%d", p_cpufreq->affected_cpus[i]);
+ else
+ printf(" %d", p_cpufreq->affected_cpus[i]);
+ printf("\n");
+
+ printf("cpuinfo frequency : max [%u] min [%u] cur [%u]\n",
+ p_cpufreq->cpuinfo_max_freq,
+ p_cpufreq->cpuinfo_min_freq,
+ p_cpufreq->cpuinfo_cur_freq);
+
+ printf("scaling_driver : %s\n", p_cpufreq->scaling_driver);
+
+ printf("scaling_avail_gov : %s\n",
+ p_cpufreq->scaling_available_governors);
+
+ printf("current_governor : %s\n", p_cpufreq->scaling_governor);
+ if ( !strncmp(p_cpufreq->scaling_governor,
+ "userspace", CPUFREQ_NAME_LEN) )
+ {
+ printf(" userspace specific :\n");
+ printf(" scaling_setspeed : %u\n",
+ p_cpufreq->u.userspace.scaling_setspeed);
+ }
+ else if ( !strncmp(p_cpufreq->scaling_governor,
+ "ondemand", CPUFREQ_NAME_LEN) )
+ {
+ printf(" ondemand specific :\n");
+ printf(" sampling_rate : max [%u] min [%u] cur [%u]\n",
+ p_cpufreq->u.ondemand.sampling_rate_max,
+ p_cpufreq->u.ondemand.sampling_rate_min,
+ p_cpufreq->u.ondemand.sampling_rate);
+ printf(" up_threshold : %u\n",
+ p_cpufreq->u.ondemand.up_threshold);
+ }
+
+ printf("scaling_avail_freq :");
+ for ( i = 0; i < p_cpufreq->freq_num; i++ )
+ if ( p_cpufreq->scaling_available_frequencies[i] ==
p_cpufreq->scaling_cur_freq )
+ printf(" *%d", p_cpufreq->scaling_available_frequencies[i]);
+ else
+ printf(" %d", p_cpufreq->scaling_available_frequencies[i]);
+ printf("\n");
+
+ printf("scaling frequency : max [%u] min [%u] cur [%u]\n",
+ p_cpufreq->scaling_max_freq,
+ p_cpufreq->scaling_min_freq,
+ p_cpufreq->scaling_cur_freq);
+ printf("\n");
+}
+
+/* show cpu frequency parameters information on CPU cpuid */
+static int show_cpufreq_para_cpuid(int xc_fd, int cpuid)
+{
+ int ret = 0;
+ struct xc_get_cpufreq_para cpufreq_para, *p_cpufreq = &cpufreq_para;
+
+ p_cpufreq->cpu_num = 0;
+ p_cpufreq->freq_num = 0;
+ p_cpufreq->gov_num = 0;
+ p_cpufreq->affected_cpus = NULL;
+ p_cpufreq->scaling_available_frequencies = NULL;
+ p_cpufreq->scaling_available_governors = NULL;
+
+ do
+ {
+ free(p_cpufreq->affected_cpus);
+ free(p_cpufreq->scaling_available_frequencies);
+ free(p_cpufreq->scaling_available_governors);
+
+ p_cpufreq->affected_cpus = NULL;
+ p_cpufreq->scaling_available_frequencies = NULL;
+ p_cpufreq->scaling_available_governors = NULL;
+
+ if (!(p_cpufreq->affected_cpus =
+ malloc(p_cpufreq->cpu_num * sizeof(uint32_t))))
+ {
+ fprintf(stderr,
+ "[CPU%d] failed to malloc for affected_cpus\n",
+ cpuid);
+ ret = -ENOMEM;
+ goto out;
+ }
+ if (!(p_cpufreq->scaling_available_frequencies =
+ malloc(p_cpufreq->freq_num * sizeof(uint32_t))))
+ {
+ fprintf(stderr,
+ "[CPU%d] failed to malloc for
scaling_available_frequencies\n",
+ cpuid);
+ ret = -ENOMEM;
+ goto out;
+ }
+ if (!(p_cpufreq->scaling_available_governors =
+ malloc(p_cpufreq->gov_num * CPUFREQ_NAME_LEN * sizeof(char))))
+ {
+ fprintf(stderr,
+ "[CPU%d] failed to malloc for
scaling_available_governors\n",
+ cpuid);
+ ret = -ENOMEM;
+ goto out;
+ }
+
+ ret = xc_get_cpufreq_para(xc_fd, cpuid, p_cpufreq);
+ } while ( ret && errno == EAGAIN );
+
+ if ( ret == 0 )
+ print_cpufreq_para(cpuid, p_cpufreq);
+ else if ( errno == ENODEV )
+ {
+ ret = -ENODEV;
+ fprintf(stderr, "Xen cpufreq is not enabled!\n");
+ }
+ else
+ fprintf(stderr,
+ "[CPU%d] failed to get cpufreq parameter\n",
+ cpuid);
+
+out:
+ free(p_cpufreq->scaling_available_governors);
+ free(p_cpufreq->scaling_available_frequencies);
+ free(p_cpufreq->affected_cpus);
+
+ return ret;
+}
+
+int cpufreq_para_func(int xc_fd, int cpuid, uint32_t value)
+{
+ int ret = 0;
+ xc_physinfo_t physinfo = { 0 };
+
+ if ( cpuid < 0 )
+ {
+ ret = xc_physinfo(xc_fd, &physinfo);
+ if ( ret )
+ {
+ fprintf(stderr, "failed to get the processor information\n");
+ }
+ else
+ {
+ int i;
+ for ( i = 0; i < physinfo.nr_cpus; i++ )
+ {
+ if ( (ret = show_cpufreq_para_cpuid(xc_fd, i)) == -ENODEV )
+ break;
+ }
+ }
+ }
+ else
+ ret = show_cpufreq_para_cpuid(xc_fd, cpuid);
+
+ return ret;
+}
+
+int scaling_max_freq_func(int xc_fd, int cpuid, uint32_t value)
+{
+ int ret = 0;
+
+ if ( cpuid < 0 )
+ {
+ show_help();
+ return -EINVAL;
+ }
+
+ ret = xc_set_cpufreq_para(xc_fd, cpuid, SCALING_MAX_FREQ, value);
+ if ( ret )
+ {
+ fprintf(stderr, "[CPU%d] failed to set scaling max freq\n", cpuid);
+ }
+
+ return ret;
+}
+
+int scaling_min_freq_func(int xc_fd, int cpuid, uint32_t value)
+{
+ int ret;
+
+ if ( cpuid < 0 )
+ {
+ show_help();
+ return -EINVAL;
+ }
+
+ ret = xc_set_cpufreq_para(xc_fd, cpuid, SCALING_MIN_FREQ, value);
+ if ( ret )
+ {
+ fprintf(stderr, "[CPU%d] failed to set scaling min freq\n", cpuid);
+ }
+
+ return ret;
+}
+
+int scaling_speed_func(int xc_fd, int cpuid, uint32_t value)
+{
+ int ret;
+
+ if ( cpuid < 0 )
+ {
+ show_help();
+ return -EINVAL;
+ }
+
+ ret = xc_set_cpufreq_para(xc_fd, cpuid, SCALING_SETSPEED, value);
+ if ( ret )
+ {
+ fprintf(stderr, "[CPU%d] failed to set scaling speed\n", cpuid);
+ }
+
+ return ret;
+}
+
+int scaling_sampling_rate_func(int xc_fd, int cpuid, uint32_t value)
+{
+ int ret;
+
+ if ( cpuid < 0 )
+ {
+ show_help();
+ return -EINVAL;
+ }
+
+ ret = xc_set_cpufreq_para(xc_fd, cpuid, SAMPLING_RATE, value);
+ if ( ret )
+ {
+ fprintf(stderr, "[CPU%d] failed to set scaling sampling rate\n",
cpuid);
+ }
+
+ return ret;
+}
+
+int scaling_up_threshold_func(int xc_fd, int cpuid, uint32_t value)
+{
+ int ret;
+
+ if ( cpuid < 0 )
+ {
+ show_help();
+ return -EINVAL;
+ }
+
+ ret = xc_set_cpufreq_para(xc_fd, cpuid, UP_THRESHOLD, value);
+ if ( ret )
+ {
+ fprintf(stderr, "[CPU%d] failed to set scaling threshold\n", cpuid);
+ }
+
+ return ret;
+}
+
+int scaling_governor_func(int xc_fd, int cpuid, char *name)
+{
+ int ret = 0;
+
+ if ( cpuid < 0 )
+ {
+ show_help();
+ return -EINVAL;
+ }
+
+ ret = xc_set_cpufreq_gov(xc_fd, cpuid, name);
+ if ( ret )
+ {
+ fprintf(stderr, "failed to set cpufreq governor to %s\n", name);
+ }
+
+ return ret;
+}
+
+struct {
+ const char *name;
+ int (*function)(int xc_fd, int cpuid, uint32_t value);
+} main_options[] = {
+ { "help", help_func },
+ { "get-cpuidle-states", cxstates_func },
+ { "get-cpufreq-states", pxstates_func },
+ { "get-cpufreq-para", cpufreq_para_func },
+ { "set-scaling-maxfreq", scaling_max_freq_func },
+ { "set-scaling-minfreq", scaling_min_freq_func },
+ { "set-scaling-governor", NULL },
+ { "set-scaling-speed", scaling_speed_func },
+ { "set-sampling-rate", scaling_sampling_rate_func },
+ { "set-up-threshold", scaling_up_threshold_func },
+};
+
+int main(int argc, char *argv[])
+{
+ int i, ret = -EINVAL;
int xc_fd;
- int i, j, ret = 0;
- int cinfo = 0, pinfo = 0;
- int ch;
- xc_physinfo_t physinfo = { 0 };
-
- while ( (ch = getopt(argc, argv, "cp")) != -1 )
- {
- switch ( ch )
- {
- case 'c':
- cinfo = 1;
- break;
- case 'p':
- pinfo = 1;
- break;
- default:
- fprintf(stderr, "%s [-p] [-c]\n", argv[0]);
- return -1;
- }
- }
-
- if ( !cinfo && !pinfo )
- {
- cinfo = 1;
- pinfo = 1;
+ int cpuid = -1;
+ uint32_t value = 0;
+ int nr_matches = 0;
+ int matches_main_options[ARRAY_SIZE(main_options)];
+
+ if ( argc < 2 )
+ {
+ show_help();
+ return ret;
+ }
+
+ if ( argc > 2 )
+ {
+ if ( sscanf(argv[2], "%d", &cpuid) != 1 )
+ cpuid = -1;
}
xc_fd = xc_interface_open();
if ( xc_fd < 0 )
{
fprintf(stderr, "failed to get the handler\n");
- return xc_fd;
- }
-
- ret = xc_physinfo(xc_fd, &physinfo);
- if ( ret )
- {
- fprintf(stderr, "failed to get the processor information\n");
- xc_interface_close(xc_fd);
- return ret;
- }
-
- /* print out the C state information */
- if ( cinfo )
- {
- int max_cx_num = 0;
- struct xc_cx_stat cxstatinfo, *cxstat = &cxstatinfo;
-
- for ( i = 0; i < physinfo.nr_cpus; i++ )
- {
- ret = xc_pm_get_max_cx(xc_fd, i, &max_cx_num);
- if ( ret )
+ }
+
+ for ( i = 0; i < ARRAY_SIZE(main_options); i++ )
+ {
+ if ( !strncmp(main_options[i].name, argv[1], strlen(argv[1])) )
+ {
+ matches_main_options[nr_matches++] = i;
+ }
+ }
+
+ if ( nr_matches > 1 )
+ {
+ fprintf(stderr, "Ambigious options: ");
+ for ( i = 0; i < nr_matches; i++ )
+ fprintf(stderr, " %s", main_options[matches_main_options[i]].name);
+ fprintf(stderr, "\n");
+ }
+ else if ( nr_matches == 1 )
+ {
+ if ( !strcmp("set-scaling-governor",
main_options[matches_main_options[0]].name) )
+ {
+ char *name = strdup(argv[3]);
+ ret = scaling_governor_func(xc_fd, cpuid, name);
+ free(name);
+ }
+ else
+ {
+ if ( argc > 3 )
{
- if ( errno == ENODEV )
- {
- fprintf(stderr, "Xen cpuidle is not enabled!\n");
- break;
- }
- else
- {
- fprintf(stderr, "[CPU%d] failed to get max C-state\n", i);
- continue;
- }
+ if ( sscanf(argv[3], "%d", &value) != 1 )
+ value = 0;
}
-
- cxstat->triggers = malloc(max_cx_num * sizeof(uint64_t));
- if ( !cxstat->triggers )
- {
- fprintf(stderr, "failed to malloc for C-states triggers\n");
- break;
- }
- cxstat->residencies = malloc(max_cx_num * sizeof(uint64_t));
- if ( !cxstat->residencies )
- {
- fprintf(stderr, "failed to malloc for C-states residencies\n");
- free(cxstat->triggers);
- break;
- }
-
- ret = xc_pm_get_cxstat(xc_fd, i, cxstat);
- if( ret )
- {
- fprintf(stderr, "[CPU%d] failed to get C-states statistics "
- "information\n", i);
- free(cxstat->triggers);
- free(cxstat->residencies);
- continue;
- }
-
- printf("cpu id : %d\n", i);
- printf("total C-states : %d\n", cxstat->nr);
- printf("idle time(ms) : %"PRIu64"\n",
- cxstat->idle_time/1000000UL);
- for ( j = 0; j < cxstat->nr; j++ )
- {
- printf("C%d : transition [%020"PRIu64"]\n",
- j, cxstat->triggers[j]);
- printf(" residency [%020"PRIu64" ms]\n",
- cxstat->residencies[j]*1000000UL/3579/1000000UL);
- }
-
- free(cxstat->triggers);
- free(cxstat->residencies);
-
- printf("\n");
- }
- }
-
- /* print out P state information */
- if ( pinfo )
- {
- int max_px_num = 0;
- struct xc_px_stat pxstatinfo, *pxstat = &pxstatinfo;
-
- for ( i = 0; i < physinfo.nr_cpus; i++ )
- {
- ret = xc_pm_get_max_px(xc_fd, i, &max_px_num);
- if ( ret )
- {
- if ( errno == ENODEV )
- {
- printf("Xen cpufreq is not enabled!\n");
- break;
- }
- else
- {
- fprintf(stderr, "[CPU%d] failed to get max P-state\n", i);
- continue;
- }
- }
-
- pxstat->trans_pt = malloc(max_px_num * max_px_num *
- sizeof(uint64_t));
- if ( !pxstat->trans_pt )
- {
- fprintf(stderr, "failed to malloc for P-states "
- "transition table\n");
- break;
- }
- pxstat->pt = malloc(max_px_num * sizeof(struct xc_px_val));
- if ( !pxstat->pt )
- {
- fprintf(stderr, "failed to malloc for P-states table\n");
- free(pxstat->trans_pt);
- break;
- }
-
- ret = xc_pm_get_pxstat(xc_fd, i, pxstat);
- if( ret )
- {
- fprintf(stderr, "[CPU%d] failed to get P-states "
- "statistics information\n", i);
- free(pxstat->trans_pt);
- free(pxstat->pt);
- continue;
- }
-
- printf("cpu id : %d\n", i);
- printf("total P-states : %d\n", pxstat->total);
- printf("usable P-states : %d\n", pxstat->usable);
- printf("current frequency : %"PRIu64" MHz\n",
- pxstat->pt[pxstat->cur].freq);
- for ( j = 0; j < pxstat->total; j++ )
- {
- if ( pxstat->cur == j )
- printf("*P%d", j);
- else
- printf("P%d ", j);
- printf(" : freq [%04"PRIu64" MHz]\n",
- pxstat->pt[j].freq);
- printf(" transition [%020"PRIu64"]\n",
- pxstat->pt[j].count);
- printf(" residency [%020"PRIu64" ms]\n",
- pxstat->pt[j].residency/1000000UL);
- }
-
- free(pxstat->trans_pt);
- free(pxstat->pt);
-
- printf("\n");
- }
- }
+ ret = main_options[matches_main_options[0]].function(xc_fd, cpuid,
value);
+ }
+ }
+ else
+ show_help();
xc_interface_close(xc_fd);
return ret;
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