void* recordEnergy(void *arg) {
struct timeval t1, t2;
double elapsedTime;
gettimeofday(&t1, NULL);
int retval = 0;
long long counts[MICPOWER_MAX_COUNTERS]; // used for caching
struct timespec ts;
ts.tv_sec = 0;
ts.tv_nsec = 50000000L; // 50 milliseconds
double energy = 0.0;
while (keepAlive) {
retval = read_sysfs_file(counts);
energy += counts[0];
nanosleep(&ts, NULL);
}
gettimeofday(&t2, NULL);
keepAlive = 1;
elapsedTime = (t2.tv_sec - t1.tv_sec) * 1000.0; // sec to ms
elapsedTime += (t2.tv_usec - t1.tv_usec) / 1000.0; // us to ms
passEnergy = energy;
printf("#D,ENERGY_MIC,%lf\n", energy * 50.0 / 1000 / 1000 / 1000);
printf("#D,TIME,%lf\n", elapsedTime);
energy = 0.0;
return arg;
}
static int tc_acpi_str(void)
{
int res, ret = 0;
char descr[4096], sysfs_path[4096];
int not_kver_3_7 = tst_kvercmp(3, 7, 0) < 0;
while (1) {
SAFE_FILE_PRINTF(cleanup, dev_tcase, "%d", ACPI_TRAVERSE);
SAFE_FILE_SCANF(cleanup, dev_result, "%d", &res);
if (res)
return TFAIL;
/*
* if device has _STR object, we should get
* a valid string from 'str' sysfs file and then can
* find it in sysfs.
*/
if (read_sysfs_file(dev_str, descr, 4096)) {
/* None of left devices has _STR */
break;
}
tst_resm(TINFO, "read description %s", descr);
/* device's sysfs path */
strcpy(sysfs_path, "/sys");
if (read_sysfs_file(dev_path, sysfs_path + 4, 4092)) {
/*
* Device doesn't have sysfs entry
* continue, because others might have it
*/
continue;
}
/*
* Find device description in sysfs.
*
* New sysfs interface to export device description
* implemented since Linux 3.7
*/
if (not_kver_3_7) {
tst_resm(TINFO, "sysfs _STR check required Linux 3.7+");
ret = TCONF;
/* continue, we can still traverse ACPI devices */
continue;
}
strcat(sysfs_path, "/description");
if (access(sysfs_path, R_OK)) {
tst_resm(TINFO, "can't find description file '%s'",
sysfs_path);
return TFAIL;
}
tst_resm(TINFO, "found description file '%s'", sysfs_path);
char sysfs_descr[4096];
if (read_sysfs_file(sysfs_path, sysfs_descr, 4096))
return TFAIL;
/*
* Compare sysfs file and description from test driver
*/
int res = strncmp(descr, sysfs_descr, strlen(descr));
ret |= res ? TFAIL : TPASS;
}
return ret;
}
