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467 lines
10 KiB
467 lines
10 KiB
// SPDX-License-Identifier: GPL-2.0-only |
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/* |
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* (C) 2010,2011 Thomas Renninger <[email protected]>, Novell Inc. |
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* |
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* Output format inspired by Len Brown's <[email protected]> turbostat tool. |
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*/ |
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#include <stdio.h> |
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#include <unistd.h> |
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#include <stdlib.h> |
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#include <string.h> |
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#include <time.h> |
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#include <signal.h> |
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#include <sys/types.h> |
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#include <sys/wait.h> |
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#include <libgen.h> |
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#include "idle_monitor/cpupower-monitor.h" |
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#include "idle_monitor/idle_monitors.h" |
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#include "helpers/helpers.h" |
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/* Define pointers to all monitors. */ |
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#define DEF(x) & x ## _monitor , |
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struct cpuidle_monitor *all_monitors[] = { |
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#include "idle_monitors.def" |
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0 |
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}; |
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int cpu_count; |
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static struct cpuidle_monitor *monitors[MONITORS_MAX]; |
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static unsigned int avail_monitors; |
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static char *progname; |
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enum operation_mode_e { list = 1, show, show_all }; |
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static int mode; |
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static int interval = 1; |
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static char *show_monitors_param; |
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static struct cpupower_topology cpu_top; |
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static unsigned int wake_cpus; |
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/* ToDo: Document this in the manpage */ |
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static char range_abbr[RANGE_MAX] = { 'T', 'C', 'P', 'M', }; |
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static void print_wrong_arg_exit(void) |
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{ |
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printf(_("invalid or unknown argument\n")); |
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exit(EXIT_FAILURE); |
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} |
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long long timespec_diff_us(struct timespec start, struct timespec end) |
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{ |
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struct timespec temp; |
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if ((end.tv_nsec - start.tv_nsec) < 0) { |
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temp.tv_sec = end.tv_sec - start.tv_sec - 1; |
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temp.tv_nsec = 1000000000 + end.tv_nsec - start.tv_nsec; |
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} else { |
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temp.tv_sec = end.tv_sec - start.tv_sec; |
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temp.tv_nsec = end.tv_nsec - start.tv_nsec; |
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} |
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return (temp.tv_sec * 1000000) + (temp.tv_nsec / 1000); |
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} |
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void print_n_spaces(int n) |
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{ |
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int x; |
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for (x = 0; x < n; x++) |
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printf(" "); |
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} |
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/*s is filled with left and right spaces |
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*to make its length atleast n+1 |
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*/ |
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int fill_string_with_spaces(char *s, int n) |
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{ |
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char *temp; |
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int len = strlen(s); |
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if (len >= n) |
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return -1; |
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temp = malloc(sizeof(char) * (n+1)); |
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for (; len < n; len++) |
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s[len] = ' '; |
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s[len] = '\0'; |
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snprintf(temp, n+1, " %s", s); |
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strcpy(s, temp); |
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free(temp); |
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return 0; |
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} |
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#define MAX_COL_WIDTH 6 |
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void print_header(int topology_depth) |
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{ |
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int unsigned mon; |
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int state, need_len; |
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cstate_t s; |
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char buf[128] = ""; |
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fill_string_with_spaces(buf, topology_depth * 5 - 1); |
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printf("%s|", buf); |
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for (mon = 0; mon < avail_monitors; mon++) { |
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need_len = monitors[mon]->hw_states_num * (MAX_COL_WIDTH + 1) |
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- 1; |
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if (mon != 0) |
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printf("||"); |
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sprintf(buf, "%s", monitors[mon]->name); |
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fill_string_with_spaces(buf, need_len); |
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printf("%s", buf); |
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} |
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printf("\n"); |
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if (topology_depth > 2) |
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printf(" PKG|"); |
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if (topology_depth > 1) |
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printf("CORE|"); |
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if (topology_depth > 0) |
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printf(" CPU|"); |
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for (mon = 0; mon < avail_monitors; mon++) { |
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if (mon != 0) |
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printf("||"); |
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for (state = 0; state < monitors[mon]->hw_states_num; state++) { |
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if (state != 0) |
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printf("|"); |
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s = monitors[mon]->hw_states[state]; |
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sprintf(buf, "%s", s.name); |
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fill_string_with_spaces(buf, MAX_COL_WIDTH); |
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printf("%s", buf); |
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} |
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printf(" "); |
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} |
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printf("\n"); |
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} |
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void print_results(int topology_depth, int cpu) |
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{ |
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unsigned int mon; |
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int state, ret; |
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double percent; |
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unsigned long long result; |
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cstate_t s; |
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/* Be careful CPUs may got resorted for pkg value do not just use cpu */ |
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if (!bitmask_isbitset(cpus_chosen, cpu_top.core_info[cpu].cpu)) |
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return; |
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if (!cpu_top.core_info[cpu].is_online && |
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cpu_top.core_info[cpu].pkg == -1) |
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return; |
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if (topology_depth > 2) |
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printf("%4d|", cpu_top.core_info[cpu].pkg); |
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if (topology_depth > 1) |
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printf("%4d|", cpu_top.core_info[cpu].core); |
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if (topology_depth > 0) |
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printf("%4d|", cpu_top.core_info[cpu].cpu); |
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for (mon = 0; mon < avail_monitors; mon++) { |
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if (mon != 0) |
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printf("||"); |
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for (state = 0; state < monitors[mon]->hw_states_num; state++) { |
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if (state != 0) |
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printf("|"); |
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s = monitors[mon]->hw_states[state]; |
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if (s.get_count_percent) { |
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ret = s.get_count_percent(s.id, &percent, |
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cpu_top.core_info[cpu].cpu); |
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if (ret) |
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printf("******"); |
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else if (percent >= 100.0) |
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printf("%6.1f", percent); |
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else |
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printf("%6.2f", percent); |
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} else if (s.get_count) { |
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ret = s.get_count(s.id, &result, |
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cpu_top.core_info[cpu].cpu); |
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if (ret) |
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printf("******"); |
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else |
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printf("%6llu", result); |
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} else { |
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printf(_("Monitor %s, Counter %s has no count " |
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"function. Implementation error\n"), |
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monitors[mon]->name, s.name); |
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exit(EXIT_FAILURE); |
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} |
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} |
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} |
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/* |
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* The monitor could still provide useful data, for example |
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* AMD HW counters partly sit in PCI config space. |
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* It's up to the monitor plug-in to check .is_online, this one |
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* is just for additional info. |
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*/ |
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if (!cpu_top.core_info[cpu].is_online && |
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cpu_top.core_info[cpu].pkg != -1) { |
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printf(_(" *is offline\n")); |
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return; |
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} else |
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printf("\n"); |
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} |
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/* param: string passed by -m param (The list of monitors to show) |
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* |
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* Monitors must have been registered already, matching monitors |
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* are picked out and available monitors array is overridden |
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* with matching ones |
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* |
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* Monitors get sorted in the same order the user passes them |
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*/ |
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static void parse_monitor_param(char *param) |
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{ |
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unsigned int num; |
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int mon, hits = 0; |
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char *tmp = param, *token; |
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struct cpuidle_monitor *tmp_mons[MONITORS_MAX]; |
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for (mon = 0; mon < MONITORS_MAX; mon++, tmp = NULL) { |
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token = strtok(tmp, ","); |
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if (token == NULL) |
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break; |
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if (strlen(token) >= MONITOR_NAME_LEN) { |
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printf(_("%s: max monitor name length" |
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" (%d) exceeded\n"), token, MONITOR_NAME_LEN); |
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continue; |
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} |
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for (num = 0; num < avail_monitors; num++) { |
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if (!strcmp(monitors[num]->name, token)) { |
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dprint("Found requested monitor: %s\n", token); |
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tmp_mons[hits] = monitors[num]; |
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hits++; |
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} |
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} |
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} |
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if (hits == 0) { |
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printf(_("No matching monitor found in %s, " |
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"try -l option\n"), param); |
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exit(EXIT_FAILURE); |
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} |
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/* Override detected/registerd monitors array with requested one */ |
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memcpy(monitors, tmp_mons, |
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sizeof(struct cpuidle_monitor *) * MONITORS_MAX); |
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avail_monitors = hits; |
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} |
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void list_monitors(void) |
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{ |
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unsigned int mon; |
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int state; |
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cstate_t s; |
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for (mon = 0; mon < avail_monitors; mon++) { |
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printf(_("Monitor \"%s\" (%d states) - Might overflow after %u " |
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"s\n"), |
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monitors[mon]->name, monitors[mon]->hw_states_num, |
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monitors[mon]->overflow_s); |
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for (state = 0; state < monitors[mon]->hw_states_num; state++) { |
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s = monitors[mon]->hw_states[state]; |
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/* |
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* ToDo show more state capabilities: |
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* percent, time (granlarity) |
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*/ |
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printf("%s\t[%c] -> %s\n", s.name, range_abbr[s.range], |
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gettext(s.desc)); |
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} |
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} |
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} |
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int fork_it(char **argv) |
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{ |
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int status; |
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unsigned int num; |
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unsigned long long timediff; |
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pid_t child_pid; |
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struct timespec start, end; |
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child_pid = fork(); |
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clock_gettime(CLOCK_REALTIME, &start); |
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for (num = 0; num < avail_monitors; num++) |
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monitors[num]->start(); |
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if (!child_pid) { |
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/* child */ |
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execvp(argv[0], argv); |
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} else { |
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/* parent */ |
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if (child_pid == -1) { |
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perror("fork"); |
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exit(1); |
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} |
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signal(SIGINT, SIG_IGN); |
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signal(SIGQUIT, SIG_IGN); |
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if (waitpid(child_pid, &status, 0) == -1) { |
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perror("wait"); |
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exit(1); |
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} |
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} |
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clock_gettime(CLOCK_REALTIME, &end); |
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for (num = 0; num < avail_monitors; num++) |
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monitors[num]->stop(); |
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timediff = timespec_diff_us(start, end); |
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if (WIFEXITED(status)) |
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printf(_("%s took %.5f seconds and exited with status %d\n"), |
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argv[0], timediff / (1000.0 * 1000), |
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WEXITSTATUS(status)); |
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return 0; |
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} |
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int do_interval_measure(int i) |
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{ |
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unsigned int num; |
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int cpu; |
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if (wake_cpus) |
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for (cpu = 0; cpu < cpu_count; cpu++) |
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bind_cpu(cpu); |
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for (num = 0; num < avail_monitors; num++) { |
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dprint("HW C-state residency monitor: %s - States: %d\n", |
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monitors[num]->name, monitors[num]->hw_states_num); |
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monitors[num]->start(); |
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} |
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sleep(i); |
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if (wake_cpus) |
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for (cpu = 0; cpu < cpu_count; cpu++) |
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bind_cpu(cpu); |
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for (num = 0; num < avail_monitors; num++) |
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monitors[num]->stop(); |
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return 0; |
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} |
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static void cmdline(int argc, char *argv[]) |
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{ |
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int opt; |
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progname = basename(argv[0]); |
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while ((opt = getopt(argc, argv, "+lci:m:")) != -1) { |
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switch (opt) { |
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case 'l': |
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if (mode) |
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print_wrong_arg_exit(); |
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mode = list; |
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break; |
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case 'i': |
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/* only allow -i with -m or no option */ |
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if (mode && mode != show) |
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print_wrong_arg_exit(); |
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interval = atoi(optarg); |
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break; |
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case 'm': |
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if (mode) |
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print_wrong_arg_exit(); |
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mode = show; |
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show_monitors_param = optarg; |
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break; |
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case 'c': |
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wake_cpus = 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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} |
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if (!mode) |
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mode = show_all; |
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} |
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int cmd_monitor(int argc, char **argv) |
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{ |
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unsigned int num; |
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struct cpuidle_monitor *test_mon; |
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int cpu; |
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cmdline(argc, argv); |
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cpu_count = get_cpu_topology(&cpu_top); |
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if (cpu_count < 0) { |
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printf(_("Cannot read number of available processors\n")); |
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return EXIT_FAILURE; |
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} |
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if (!cpu_top.core_info[0].is_online) |
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printf("WARNING: at least one cpu is offline\n"); |
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/* Default is: monitor all CPUs */ |
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if (bitmask_isallclear(cpus_chosen)) |
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bitmask_setall(cpus_chosen); |
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dprint("System has up to %d CPU cores\n", cpu_count); |
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for (num = 0; all_monitors[num]; num++) { |
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dprint("Try to register: %s\n", all_monitors[num]->name); |
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test_mon = all_monitors[num]->do_register(); |
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if (test_mon) { |
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if (test_mon->flags.needs_root && !run_as_root) { |
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fprintf(stderr, _("Available monitor %s needs " |
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"root access\n"), test_mon->name); |
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continue; |
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} |
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monitors[avail_monitors] = test_mon; |
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dprint("%s registered\n", all_monitors[num]->name); |
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avail_monitors++; |
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} |
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} |
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if (avail_monitors == 0) { |
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printf(_("No HW Cstate monitors found\n")); |
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return 1; |
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} |
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if (mode == list) { |
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list_monitors(); |
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exit(EXIT_SUCCESS); |
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} |
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if (mode == show) |
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parse_monitor_param(show_monitors_param); |
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dprint("Packages: %d - Cores: %d - CPUs: %d\n", |
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cpu_top.pkgs, cpu_top.cores, cpu_count); |
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/* |
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* if any params left, it must be a command to fork |
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*/ |
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if (argc - optind) |
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fork_it(argv + optind); |
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else |
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do_interval_measure(interval); |
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/* ToDo: Topology parsing needs fixing first to do |
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this more generically */ |
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if (cpu_top.pkgs > 1) |
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print_header(3); |
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else |
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print_header(1); |
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for (cpu = 0; cpu < cpu_count; cpu++) { |
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if (cpu_top.pkgs > 1) |
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print_results(3, cpu); |
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else |
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print_results(1, cpu); |
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} |
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for (num = 0; num < avail_monitors; num++) |
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monitors[num]->unregister(); |
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cpu_topology_release(cpu_top); |
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return 0; |
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}
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