89 lines
2.7 KiB
C
89 lines
2.7 KiB
C
/* Copyright (c) 2009, The Linux Foundation. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* * Neither the name of The Linux Foundation nor
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* the names of its contributors may be used to endorse or promote
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* products derived from this software without specific prior written
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* permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NON-INFRINGEMENT ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
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* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <fcntl.h>
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#include <string.h>
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#include "powertop.h"
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char msm_pm_stat_lines[12][200];
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void msm_pm_stats(void)
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{
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FILE* fp = NULL;
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char buf[256], temp[256];
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char *p;
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int count, time_s, time_ns;
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int i, n = 0;
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static char sleep_types[10][50] = {
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"idle-request",
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"idle-spin",
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"idle-wfi",
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"idle-sleep",
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"idle-failed-sleep",
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"idle-power-collapse",
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"idle-failed-power-collapse",
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"suspend",
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"failed-suspend",
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"not-idle"
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};
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fp = fopen("/proc/msm_pm_stats", "r");
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if (!fp) {
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printf("No msm_pm_stats available in procfs. \
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Enable CONFIG_MSM_IDLE_STATS in the kernel.\n");
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return;
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}
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sprintf(msm_pm_stat_lines[n], "MSM PM idle stats:\n");
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while (!feof(fp)) {
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fgets(buf, 256, fp);
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for (i = n; i < 10; i++) {
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p = buf;
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if (strstr(p, sleep_types[i])) {
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fgets(buf, 256, fp);
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sscanf(buf, "%s%d", temp, &count);
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fgets(buf, 256, fp);
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sscanf(buf, "%s%d.%d", temp,
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&time_s,
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&time_ns);
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sprintf(msm_pm_stat_lines[++n],
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"%s (count = %d) : %d.%ds\n",
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sleep_types[i],
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count,
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time_s,
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time_ns);
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break;
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}
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}
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}
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fclose(fp);
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}
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