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Diffstat (limited to 'tools/testing/selftests/vm/vm_util.c')
-rw-r--r--tools/testing/selftests/vm/vm_util.c36
1 files changed, 27 insertions, 9 deletions
diff --git a/tools/testing/selftests/vm/vm_util.c b/tools/testing/selftests/vm/vm_util.c
index b58ab11a7a30..f11f8adda521 100644
--- a/tools/testing/selftests/vm/vm_util.c
+++ b/tools/testing/selftests/vm/vm_util.c
@@ -42,9 +42,9 @@ void clear_softdirty(void)
ksft_exit_fail_msg("writing clear_refs failed\n");
}
-static bool check_for_pattern(FILE *fp, const char *pattern, char *buf)
+bool check_for_pattern(FILE *fp, const char *pattern, char *buf, size_t len)
{
- while (fgets(buf, MAX_LINE_LENGTH, fp) != NULL) {
+ while (fgets(buf, len, fp)) {
if (!strncmp(buf, pattern, strlen(pattern)))
return true;
}
@@ -72,9 +72,10 @@ uint64_t read_pmd_pagesize(void)
return strtoul(buf, NULL, 10);
}
-uint64_t check_huge(void *addr)
+bool __check_huge(void *addr, char *pattern, int nr_hpages,
+ uint64_t hpage_size)
{
- uint64_t thp = 0;
+ uint64_t thp = -1;
int ret;
FILE *fp;
char buffer[MAX_LINE_LENGTH];
@@ -89,20 +90,37 @@ uint64_t check_huge(void *addr)
if (!fp)
ksft_exit_fail_msg("%s: Failed to open file %s\n", __func__, SMAP_FILE_PATH);
- if (!check_for_pattern(fp, addr_pattern, buffer))
+ if (!check_for_pattern(fp, addr_pattern, buffer, sizeof(buffer)))
goto err_out;
/*
- * Fetch the AnonHugePages: in the same block and check the number of
+ * Fetch the pattern in the same block and check the number of
* hugepages.
*/
- if (!check_for_pattern(fp, "AnonHugePages:", buffer))
+ if (!check_for_pattern(fp, pattern, buffer, sizeof(buffer)))
goto err_out;
- if (sscanf(buffer, "AnonHugePages:%10ld kB", &thp) != 1)
+ snprintf(addr_pattern, MAX_LINE_LENGTH, "%s%%9ld kB", pattern);
+
+ if (sscanf(buffer, addr_pattern, &thp) != 1)
ksft_exit_fail_msg("Reading smap error\n");
err_out:
fclose(fp);
- return thp;
+ return thp == (nr_hpages * (hpage_size >> 10));
+}
+
+bool check_huge_anon(void *addr, int nr_hpages, uint64_t hpage_size)
+{
+ return __check_huge(addr, "AnonHugePages: ", nr_hpages, hpage_size);
+}
+
+bool check_huge_file(void *addr, int nr_hpages, uint64_t hpage_size)
+{
+ return __check_huge(addr, "FilePmdMapped:", nr_hpages, hpage_size);
+}
+
+bool check_huge_shmem(void *addr, int nr_hpages, uint64_t hpage_size)
+{
+ return __check_huge(addr, "ShmemPmdMapped:", nr_hpages, hpage_size);
}