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Message-ID: <20240131140528.320252-9-usama.anjum@collabora.com>
Date: Wed, 31 Jan 2024 19:05:19 +0500
From: Muhammad Usama Anjum <usama.anjum@...labora.com>
To: Andrew Morton <akpm@...ux-foundation.org>,
Shuah Khan <shuah@...nel.org>
Cc: Muhammad Usama Anjum <usama.anjum@...labora.com>,
kernel@...labora.com,
linux-mm@...ck.org,
linux-kselftest@...r.kernel.org,
linux-kernel@...r.kernel.org
Subject: [PATCH 09/12] selftests/mm: thp_settings: conform to TAP format output
Conform the layout, informational and status messages to TAP. No
functional change is intended other than the layout of output messages.
Signed-off-by: Muhammad Usama Anjum <usama.anjum@...labora.com>
---
tools/testing/selftests/mm/khugepaged.c | 3 +-
tools/testing/selftests/mm/thp_settings.c | 123 ++++++++--------------
tools/testing/selftests/mm/thp_settings.h | 4 +-
3 files changed, 47 insertions(+), 83 deletions(-)
diff --git a/tools/testing/selftests/mm/khugepaged.c b/tools/testing/selftests/mm/khugepaged.c
index d51fdaee7dc6a..3f202da0867c5 100644
--- a/tools/testing/selftests/mm/khugepaged.c
+++ b/tools/testing/selftests/mm/khugepaged.c
@@ -152,8 +152,7 @@ static void get_finfo(const char *dir)
major(path_stat.st_dev), minor(path_stat.st_dev)) >= sizeof(path))
ksft_exit_fail_msg("%s: Pathname is too long\n", __func__);
- if (read_file(path, buf, sizeof(buf)) < 0)
- ksft_exit_fail_msg("read_file(read_num): %s\n", strerror(errno));
+ read_file(path, buf, sizeof(buf));
if (strstr(buf, "DEVTYPE=disk")) {
/* Found it */
diff --git a/tools/testing/selftests/mm/thp_settings.c b/tools/testing/selftests/mm/thp_settings.c
index a4163438108ec..273a95d025285 100644
--- a/tools/testing/selftests/mm/thp_settings.c
+++ b/tools/testing/selftests/mm/thp_settings.c
@@ -5,7 +5,9 @@
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
+#include <errno.h>
+#include "../kselftest.h"
#include "thp_settings.h"
#define THP_SYSFS "/sys/kernel/mm/transparent_hugepage/"
@@ -42,58 +44,45 @@ static const char * const shmem_enabled_strings[] = {
NULL
};
-int read_file(const char *path, char *buf, size_t buflen)
+void read_file(const char *path, char *buf, size_t buflen)
{
int fd;
ssize_t numread;
fd = open(path, O_RDONLY);
if (fd == -1)
- return 0;
+ ksft_exit_fail_msg("%s open failed: %s\n", path, strerror(errno));
numread = read(fd, buf, buflen - 1);
if (numread < 1) {
close(fd);
- return 0;
+ ksft_exit_fail_msg("No data read\n");
}
buf[numread] = '\0';
close(fd);
-
- return (unsigned int) numread;
}
-int write_file(const char *path, const char *buf, size_t buflen)
+void write_file(const char *path, const char *buf, size_t buflen)
{
int fd;
ssize_t numwritten;
fd = open(path, O_WRONLY);
- if (fd == -1) {
- printf("open(%s)\n", path);
- exit(EXIT_FAILURE);
- return 0;
- }
+ if (fd == -1)
+ ksft_exit_fail_msg("%s open failed\n", path);
numwritten = write(fd, buf, buflen - 1);
close(fd);
- if (numwritten < 1) {
- printf("write(%s)\n", buf);
- exit(EXIT_FAILURE);
- return 0;
- }
-
- return (unsigned int) numwritten;
+ if (numwritten < 1)
+ ksft_exit_fail_msg("write failed (%s)\n", buf);
}
const unsigned long read_num(const char *path)
{
char buf[21];
- if (read_file(path, buf, sizeof(buf)) < 0) {
- perror("read_file()");
- exit(EXIT_FAILURE);
- }
+ read_file(path, buf, sizeof(buf));
return strtoul(buf, NULL, 10);
}
@@ -103,10 +92,7 @@ void write_num(const char *path, unsigned long num)
char buf[21];
sprintf(buf, "%ld", num);
- if (!write_file(path, buf, strlen(buf) + 1)) {
- perror(path);
- exit(EXIT_FAILURE);
- }
+ write_file(path, buf, strlen(buf) + 1);
}
int thp_read_string(const char *name, const char * const strings[])
@@ -117,30 +103,22 @@ int thp_read_string(const char *name, const char * const strings[])
int ret;
ret = snprintf(path, PATH_MAX, THP_SYSFS "%s", name);
- if (ret >= PATH_MAX) {
- printf("%s: Pathname is too long\n", __func__);
- exit(EXIT_FAILURE);
- }
+ if (ret >= PATH_MAX)
+ ksft_exit_fail_msg("%s: Pathname is too long\n", __func__);
- if (!read_file(path, buf, sizeof(buf))) {
- perror(path);
- exit(EXIT_FAILURE);
- }
+ read_file(path, buf, sizeof(buf));
c = strchr(buf, '[');
- if (!c) {
- printf("%s: Parse failure\n", __func__);
- exit(EXIT_FAILURE);
- }
+ if (!c)
+ ksft_exit_fail_msg("%s: Parse failure\n", __func__);
c++;
memmove(buf, c, sizeof(buf) - (c - buf));
c = strchr(buf, ']');
- if (!c) {
- printf("%s: Parse failure\n", __func__);
- exit(EXIT_FAILURE);
- }
+ if (!c)
+ ksft_exit_fail_msg("%s: Parse failure\n", __func__);
+
*c = '\0';
ret = 0;
@@ -150,8 +128,8 @@ int thp_read_string(const char *name, const char * const strings[])
ret++;
}
- printf("Failed to parse %s\n", name);
- exit(EXIT_FAILURE);
+ ksft_exit_fail_msg("Failed to parse %s\n", name);
+ return -1;
}
void thp_write_string(const char *name, const char *val)
@@ -160,15 +138,10 @@ void thp_write_string(const char *name, const char *val)
int ret;
ret = snprintf(path, PATH_MAX, THP_SYSFS "%s", name);
- if (ret >= PATH_MAX) {
- printf("%s: Pathname is too long\n", __func__);
- exit(EXIT_FAILURE);
- }
+ if (ret >= PATH_MAX)
+ ksft_exit_fail_msg("%s: Pathname is too long\n", __func__);
- if (!write_file(path, val, strlen(val) + 1)) {
- perror(path);
- exit(EXIT_FAILURE);
- }
+ write_file(path, val, strlen(val) + 1);
}
const unsigned long thp_read_num(const char *name)
@@ -177,10 +150,9 @@ const unsigned long thp_read_num(const char *name)
int ret;
ret = snprintf(path, PATH_MAX, THP_SYSFS "%s", name);
- if (ret >= PATH_MAX) {
- printf("%s: Pathname is too long\n", __func__);
- exit(EXIT_FAILURE);
- }
+ if (ret >= PATH_MAX)
+ ksft_exit_fail_msg("%s: Pathname is too long\n", __func__);
+
return read_num(path);
}
@@ -190,10 +162,9 @@ void thp_write_num(const char *name, unsigned long num)
int ret;
ret = snprintf(path, PATH_MAX, THP_SYSFS "%s", name);
- if (ret >= PATH_MAX) {
- printf("%s: Pathname is too long\n", __func__);
- exit(EXIT_FAILURE);
- }
+ if (ret >= PATH_MAX)
+ ksft_exit_fail_msg("%s: Pathname is too long\n", __func__);
+
write_num(path, num);
}
@@ -275,29 +246,26 @@ void thp_write_settings(struct thp_settings *settings)
struct thp_settings *thp_current_settings(void)
{
- if (!settings_index) {
- printf("Fail: No settings set");
- exit(EXIT_FAILURE);
- }
+ if (!settings_index)
+ ksft_exit_fail_msg("Fail: No settings set\n");
+
return settings_stack + settings_index - 1;
}
void thp_push_settings(struct thp_settings *settings)
{
- if (settings_index >= MAX_SETTINGS_DEPTH) {
- printf("Fail: Settings stack exceeded");
- exit(EXIT_FAILURE);
- }
+ if (settings_index >= MAX_SETTINGS_DEPTH)
+ ksft_exit_fail_msg("Fail: Settings stack exceeded\n");
+
settings_stack[settings_index++] = *settings;
thp_write_settings(thp_current_settings());
}
void thp_pop_settings(void)
{
- if (settings_index <= 0) {
- printf("Fail: Settings stack empty");
- exit(EXIT_FAILURE);
- }
+ if (settings_index <= 0)
+ ksft_exit_fail_msg("Fail: Settings stack empty\n");
+
--settings_index;
thp_write_settings(thp_current_settings());
}
@@ -335,14 +303,11 @@ unsigned long thp_supported_orders(void)
for (i = 0; i < NR_ORDERS; i++) {
ret = snprintf(path, PATH_MAX, THP_SYSFS "hugepages-%ukB/enabled",
(getpagesize() >> 10) << i);
- if (ret >= PATH_MAX) {
- printf("%s: Pathname is too long\n", __func__);
- exit(EXIT_FAILURE);
- }
+ if (ret >= PATH_MAX)
+ ksft_exit_fail_msg("%s: Pathname is too long\n", __func__);
- ret = read_file(path, buf, sizeof(buf));
- if (ret)
- orders |= 1UL << i;
+ read_file(path, buf, sizeof(buf));
+ orders |= 1UL << i;
}
return orders;
diff --git a/tools/testing/selftests/mm/thp_settings.h b/tools/testing/selftests/mm/thp_settings.h
index 71cbff05f4c7f..04a6a7bbd08f8 100644
--- a/tools/testing/selftests/mm/thp_settings.h
+++ b/tools/testing/selftests/mm/thp_settings.h
@@ -56,8 +56,8 @@ struct thp_settings {
struct hugepages_settings hugepages[NR_ORDERS];
};
-int read_file(const char *path, char *buf, size_t buflen);
-int write_file(const char *path, const char *buf, size_t buflen);
+void read_file(const char *path, char *buf, size_t buflen);
+void write_file(const char *path, const char *buf, size_t buflen);
const unsigned long read_num(const char *path);
void write_num(const char *path, unsigned long num);
--
2.42.0
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