static void cleanup(void)
{
FILE_PRINTF(cdrv[id].file, "%d", boost_value);
if (governor[0] != '\0')
FILE_PRINTF(governor, "%s", governor_name);
}
/*
* We try raising bdi readahead limit as much as we can. We write
* and read back "read_ahead_kb" sysfs value, starting with filesize.
* If that fails, we try again with lower value.
* readahead_length used in the test is then set to MIN(bdi limit, 2M),
* to respect kernels prior to commit 600e19afc5f8a6c.
*/
static void setup_readahead_length(void)
{
struct stat sbuf;
char tmp[PATH_MAX], *backing_dev;
int ra_new_limit, ra_limit;
/* Find out backing device name */
SAFE_LSTAT(tst_device->dev, &sbuf);
if (S_ISLNK(sbuf.st_mode))
SAFE_READLINK(tst_device->dev, tmp, PATH_MAX);
else
strcpy(tmp, tst_device->dev);
backing_dev = basename(tmp);
sprintf(sys_bdi_ra_path, "/sys/class/block/%s/bdi/read_ahead_kb",
backing_dev);
if (access(sys_bdi_ra_path, F_OK))
return;
SAFE_FILE_SCANF(sys_bdi_ra_path, "%d", &orig_bdi_limit);
/* raise bdi limit as much as kernel allows */
ra_new_limit = testfile_size / 1024;
while (ra_new_limit > pagesize / 1024) {
FILE_PRINTF(sys_bdi_ra_path, "%d", ra_new_limit);
SAFE_FILE_SCANF(sys_bdi_ra_path, "%d", &ra_limit);
if (ra_limit == ra_new_limit) {
readahead_length = MIN(ra_new_limit * 1024,
2 * 1024 * 1024);
break;
}
ra_new_limit = ra_new_limit / 2;
}
}
void cleanup(void)
{
if (access(PATH_KSM "merge_across_nodes", F_OK) == 0)
FILE_PRINTF(PATH_KSM "merge_across_nodes",
"%d", merge_across_nodes);
TEST_CLEANUP;
}
void cleanup(void)
{
if (access(PATH_KSM "merge_across_nodes", F_OK) == 0)
FILE_PRINTF(PATH_KSM "merge_across_nodes",
"%d", merge_across_nodes);
umount_mem(MEMCG_PATH, MEMCG_PATH_NEW);
}
void cleanup(void)
{
if (access(PATH_KSM "merge_across_nodes", F_OK) == 0)
FILE_PRINTF(PATH_KSM "merge_across_nodes",
"%d", merge_across_nodes);
restore_max_page_sharing();
umount_mem(CPATH, CPATH_NEW);
}
static void cleanup(void)
{
int i;
for (i = 0; i < num_shms; i++)
rm_shm(shm_id_arr[i]);
FILE_PRINTF(PATH_SHMMNI, "%ld", orig_shmmni);
restore_nr_hugepages();
}
void tst_sys_conf_restore(int verbose)
{
struct tst_sys_conf *i;
for (i = save_restore_data; i; i = i->next) {
if (verbose) {
tst_res(TINFO, "Restoring conf.: %s -> %s\n",
i->path, i->value);
}
FILE_PRINTF(i->path, "%s", i->value);
}
}
static void cleanup(void)
{
if (sigprocmask(SIG_SETMASK, &oldset, NULL) < 0)
tst_resm(TWARN | TERRNO, "sigprocmask restore oldset failed");
if (fd > 0 && close(fd))
tst_resm(TWARN | TERRNO, "failed to close file");
tst_rmdir();
/* Restore the lease-break-time. */
FILE_PRINTF(PATH_LS_BRK_T, "%d", ls_brk_t);
}
void restore_max_page_sharing(void)
{
if (access(PATH_KSM "max_page_sharing", F_OK) == 0)
FILE_PRINTF(PATH_KSM "max_page_sharing",
"%d", max_page_sharing);
}