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-rwxr-xr-xtools/testing/ktest/ktest.pl120
-rw-r--r--tools/testing/ktest/sample.conf46
-rw-r--r--tools/testing/selftests/vm/Makefile4
-rw-r--r--tools/testing/selftests/vm/thuge-gen.c254
4 files changed, 414 insertions, 10 deletions
diff --git a/tools/testing/ktest/ktest.pl b/tools/testing/ktest/ktest.pl
index c7ba7614061b..35fc584a4ffe 100755
--- a/tools/testing/ktest/ktest.pl
+++ b/tools/testing/ktest/ktest.pl
@@ -53,6 +53,9 @@ my %default = (
"STOP_AFTER_FAILURE" => 60,
"STOP_TEST_AFTER" => 600,
"MAX_MONITOR_WAIT" => 1800,
+ "GRUB_REBOOT" => "grub2-reboot",
+ "SYSLINUX" => "extlinux",
+ "SYSLINUX_PATH" => "/boot/extlinux",
# required, and we will ask users if they don't have them but we keep the default
# value something that is common.
@@ -105,7 +108,12 @@ my $scp_to_target;
my $scp_to_target_install;
my $power_off;
my $grub_menu;
+my $grub_file;
my $grub_number;
+my $grub_reboot;
+my $syslinux;
+my $syslinux_path;
+my $syslinux_label;
my $target;
my $make;
my $pre_install;
@@ -232,6 +240,11 @@ my %option_map = (
"ADD_CONFIG" => \$addconfig,
"REBOOT_TYPE" => \$reboot_type,
"GRUB_MENU" => \$grub_menu,
+ "GRUB_FILE" => \$grub_file,
+ "GRUB_REBOOT" => \$grub_reboot,
+ "SYSLINUX" => \$syslinux,
+ "SYSLINUX_PATH" => \$syslinux_path,
+ "SYSLINUX_LABEL" => \$syslinux_label,
"PRE_INSTALL" => \$pre_install,
"POST_INSTALL" => \$post_install,
"NO_INSTALL" => \$no_install,
@@ -368,7 +381,7 @@ EOF
;
$config_help{"REBOOT_TYPE"} = << "EOF"
Way to reboot the box to the test kernel.
- Only valid options so far are "grub" and "script".
+ Only valid options so far are "grub", "grub2", "syslinux", and "script".
If you specify grub, it will assume grub version 1
and will search in /boot/grub/menu.lst for the title \$GRUB_MENU
@@ -378,11 +391,19 @@ $config_help{"REBOOT_TYPE"} = << "EOF"
The entry in /boot/grub/menu.lst must be entered in manually.
The test will not modify that file.
+
+ If you specify grub2, then you also need to specify both \$GRUB_MENU
+ and \$GRUB_FILE.
+
+ If you specify syslinux, then you may use SYSLINUX to define the syslinux
+ command (defaults to extlinux), and SYSLINUX_PATH to specify the path to
+ the syslinux install (defaults to /boot/extlinux). But you have to specify
+ SYSLINUX_LABEL to define the label to boot to for the test kernel.
EOF
;
$config_help{"GRUB_MENU"} = << "EOF"
The grub title name for the test kernel to boot
- (Only mandatory if REBOOT_TYPE = grub)
+ (Only mandatory if REBOOT_TYPE = grub or grub2)
Note, ktest.pl will not update the grub menu.lst, you need to
manually add an option for the test. ktest.pl will search
@@ -393,6 +414,22 @@ $config_help{"GRUB_MENU"} = << "EOF"
title Test Kernel
kernel vmlinuz-test
GRUB_MENU = Test Kernel
+
+ For grub2, a search of \$GRUB_FILE is performed for the lines
+ that begin with "menuentry". It will not detect submenus. The
+ menu must be a non-nested menu. Add the quotes used in the menu
+ to guarantee your selection, as the first menuentry with the content
+ of \$GRUB_MENU that is found will be used.
+EOF
+ ;
+$config_help{"GRUB_FILE"} = << "EOF"
+ If grub2 is used, the full path for the grub.cfg file is placed
+ here. Use something like /boot/grub2/grub.cfg to search.
+EOF
+ ;
+$config_help{"SYSLINUX_LABEL"} = << "EOF"
+ If syslinux is used, the label that boots the target kernel must
+ be specified with SYSLINUX_LABEL.
EOF
;
$config_help{"REBOOT_SCRIPT"} = << "EOF"
@@ -521,6 +558,15 @@ sub get_ktest_configs {
if ($rtype eq "grub") {
get_ktest_config("GRUB_MENU");
}
+
+ if ($rtype eq "grub2") {
+ get_ktest_config("GRUB_MENU");
+ get_ktest_config("GRUB_FILE");
+ }
+
+ if ($rtype eq "syslinux") {
+ get_ktest_config("SYSLINUX_LABEL");
+ }
}
sub process_variables {
@@ -1123,6 +1169,9 @@ sub wait_for_monitor;
sub reboot {
my ($time) = @_;
+ # Make sure everything has been written to disk
+ run_ssh("sync");
+
if (defined($time)) {
start_monitor;
# flush out current monitor
@@ -1452,8 +1501,44 @@ sub run_scp_mod {
return run_scp($src, $dst, $cp_scp);
}
+sub get_grub2_index {
+
+ return if (defined($grub_number));
+
+ doprint "Find grub2 menu ... ";
+ $grub_number = -1;
+
+ my $ssh_grub = $ssh_exec;
+ $ssh_grub =~ s,\$SSH_COMMAND,cat $grub_file,g;
+
+ open(IN, "$ssh_grub |")
+ or die "unable to get $grub_file";
+
+ my $found = 0;
+
+ while (<IN>) {
+ if (/^menuentry.*$grub_menu/) {
+ $grub_number++;
+ $found = 1;
+ last;
+ } elsif (/^menuentry\s/) {
+ $grub_number++;
+ }
+ }
+ close(IN);
+
+ die "Could not find '$grub_menu' in $grub_file on $machine"
+ if (!$found);
+ doprint "$grub_number\n";
+}
+
sub get_grub_index {
+ if ($reboot_type eq "grub2") {
+ get_grub2_index;
+ return;
+ }
+
if ($reboot_type ne "grub") {
return;
}
@@ -1524,6 +1609,10 @@ sub reboot_to {
if ($reboot_type eq "grub") {
run_ssh "'(echo \"savedefault --default=$grub_number --once\" | grub --batch)'";
+ } elsif ($reboot_type eq "grub2") {
+ run_ssh "$grub_reboot $grub_number";
+ } elsif ($reboot_type eq "syslinux") {
+ run_ssh "$syslinux --once \\\"$syslinux_label\\\" $syslinux_path";
} elsif (defined $reboot_script) {
run_command "$reboot_script";
}
@@ -1718,6 +1807,14 @@ sub do_post_install {
dodie "Failed to run post install";
}
+# Sometimes the reboot fails, and will hang. We try to ssh to the box
+# and if we fail, we force another reboot, that should powercycle it.
+sub test_booted {
+ if (!run_ssh "echo testing connection") {
+ reboot $sleep_time;
+ }
+}
+
sub install {
return if ($no_install);
@@ -1730,6 +1827,8 @@ sub install {
my $cp_target = eval_kernel_version $target_image;
+ test_booted;
+
run_scp_install "$outputdir/$build_target", "$cp_target" or
dodie "failed to copy image";
@@ -1877,10 +1976,14 @@ sub make_oldconfig {
if (!run_command "$make olddefconfig") {
# Perhaps olddefconfig doesn't exist in this version of the kernel
- # try a yes '' | oldconfig
- doprint "olddefconfig failed, trying yes '' | make oldconfig\n";
- run_command "yes '' | $make oldconfig" or
- dodie "failed make config oldconfig";
+ # try oldnoconfig
+ doprint "olddefconfig failed, trying make oldnoconfig\n";
+ if (!run_command "$make oldnoconfig") {
+ doprint "oldnoconfig failed, trying yes '' | make oldconfig\n";
+ # try a yes '' | oldconfig
+ run_command "yes '' | $make oldconfig" or
+ dodie "failed make config oldconfig";
+ }
}
}
@@ -3700,6 +3803,11 @@ for (my $i = 1; $i <= $opt{"NUM_TESTS"}; $i++) {
$target = "$ssh_user\@$machine";
if ($reboot_type eq "grub") {
dodie "GRUB_MENU not defined" if (!defined($grub_menu));
+ } elsif ($reboot_type eq "grub2") {
+ dodie "GRUB_MENU not defined" if (!defined($grub_menu));
+ dodie "GRUB_FILE not defined" if (!defined($grub_file));
+ } elsif ($reboot_type eq "syslinux") {
+ dodie "SYSLINUX_LABEL not defined" if (!defined($syslinux_label));
}
}
diff --git a/tools/testing/ktest/sample.conf b/tools/testing/ktest/sample.conf
index de28a0a3b8fc..4012e9330344 100644
--- a/tools/testing/ktest/sample.conf
+++ b/tools/testing/ktest/sample.conf
@@ -332,8 +332,18 @@
# from other linux builds on the system.
#LOCALVERSION = -test
+# For REBOOT_TYPE = grub2, you must specify where the grub.cfg
+# file is. This is the file that is searched to find the menu
+# option to boot to with GRUB_REBOOT
+#GRUB_FILE = /boot/grub2/grub.cfg
+
+# The tool for REBOOT_TYPE = grub2 to set the next reboot kernel
+# to boot into (one shot mode).
+# (default grub2_reboot)
+#GRUB_REBOOT = grub2_reboot
+
# The grub title name for the test kernel to boot
-# (Only mandatory if REBOOT_TYPE = grub)
+# (Only mandatory if REBOOT_TYPE = grub or grub2)
#
# Note, ktest.pl will not update the grub menu.lst, you need to
# manually add an option for the test. ktest.pl will search
@@ -343,8 +353,33 @@
# For example, if in the /boot/grub/menu.lst the test kernel title has:
# title Test Kernel
# kernel vmlinuz-test
+#
+# For grub2, a search of top level "menuentry"s are done. No
+# submenu is searched. The menu is found by searching for the
+# contents of GRUB_MENU in the line that starts with "menuentry".
+# You may want to include the quotes around the option. For example:
+# for: menuentry 'Test Kernel'
+# do a: GRUB_MENU = 'Test Kernel'
+# For customizing, add your entry in /etc/grub.d/40_custom.
+#
#GRUB_MENU = Test Kernel
+# For REBOOT_TYPE = syslinux, the name of the syslinux executable
+# (on the target) to use to set up the next reboot to boot the
+# test kernel.
+# (default extlinux)
+#SYSLINUX = syslinux
+
+# For REBOOT_TYPE = syslinux, the path that is passed to to the
+# syslinux command where syslinux is installed.
+# (default /boot/extlinux)
+#SYSLINUX_PATH = /boot/syslinux
+
+# For REBOOT_TYPE = syslinux, the syslinux label that references the
+# test kernel in the syslinux config file.
+# (default undefined)
+#SYSLINUX_LABEL = "test-kernel"
+
# A script to reboot the target into the test kernel
# This and SWITCH_TO_TEST are about the same, except
# SWITCH_TO_TEST is run even for REBOOT_TYPE = grub.
@@ -497,7 +532,7 @@
#POST_BUILD_DIE = 1
# Way to reboot the box to the test kernel.
-# Only valid options so far are "grub" and "script"
+# Only valid options so far are "grub", "grub2", "syslinux" and "script"
# (default grub)
# If you specify grub, it will assume grub version 1
# and will search in /boot/grub/menu.lst for the title $GRUB_MENU
@@ -505,6 +540,13 @@
# your setup, then specify "script" and have a command or script
# specified in REBOOT_SCRIPT to boot to the target.
#
+# For REBOOT_TYPE = grub2, you must define both GRUB_MENU and
+# GRUB_FILE.
+#
+# For REBOOT_TYPE = syslinux, you must define SYSLINUX_LABEL, and
+# perhaps modify SYSLINUX (default extlinux) and SYSLINUX_PATH
+# (default /boot/extlinux)
+#
# The entry in /boot/grub/menu.lst must be entered in manually.
# The test will not modify that file.
#REBOOT_TYPE = grub
diff --git a/tools/testing/selftests/vm/Makefile b/tools/testing/selftests/vm/Makefile
index b336b24aa6c0..7300d0702efe 100644
--- a/tools/testing/selftests/vm/Makefile
+++ b/tools/testing/selftests/vm/Makefile
@@ -1,9 +1,9 @@
# Makefile for vm selftests
CC = $(CROSS_COMPILE)gcc
-CFLAGS = -Wall -Wextra
+CFLAGS = -Wall
-all: hugepage-mmap hugepage-shm map_hugetlb
+all: hugepage-mmap hugepage-shm map_hugetlb thuge-gen
%: %.c
$(CC) $(CFLAGS) -o $@ $^
diff --git a/tools/testing/selftests/vm/thuge-gen.c b/tools/testing/selftests/vm/thuge-gen.c
new file mode 100644
index 000000000000..c87957295f74
--- /dev/null
+++ b/tools/testing/selftests/vm/thuge-gen.c
@@ -0,0 +1,254 @@
+/* Test selecting other page sizes for mmap/shmget.
+
+ Before running this huge pages for each huge page size must have been
+ reserved.
+ For large pages beyond MAX_ORDER (like 1GB on x86) boot options must be used.
+ Also shmmax must be increased.
+ And you need to run as root to work around some weird permissions in shm.
+ And nothing using huge pages should run in parallel.
+ When the program aborts you may need to clean up the shm segments with
+ ipcrm -m by hand, like this
+ sudo ipcs | awk '$1 == "0x00000000" {print $2}' | xargs -n1 sudo ipcrm -m
+ (warning this will remove all if someone else uses them) */
+
+#define _GNU_SOURCE 1
+#include <sys/mman.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <sys/ipc.h>
+#include <sys/shm.h>
+#include <sys/stat.h>
+#include <glob.h>
+#include <assert.h>
+#include <unistd.h>
+#include <stdarg.h>
+#include <string.h>
+
+#define err(x) perror(x), exit(1)
+
+#define MAP_HUGE_2MB (21 << MAP_HUGE_SHIFT)
+#define MAP_HUGE_1GB (30 << MAP_HUGE_SHIFT)
+#define MAP_HUGE_SHIFT 26
+#define MAP_HUGE_MASK 0x3f
+#define MAP_HUGETLB 0x40000
+
+#define SHM_HUGETLB 04000 /* segment will use huge TLB pages */
+#define SHM_HUGE_SHIFT 26
+#define SHM_HUGE_MASK 0x3f
+#define SHM_HUGE_2MB (21 << SHM_HUGE_SHIFT)
+#define SHM_HUGE_1GB (30 << SHM_HUGE_SHIFT)
+
+#define NUM_PAGESIZES 5
+
+#define NUM_PAGES 4
+
+#define Dprintf(fmt...) // printf(fmt)
+
+unsigned long page_sizes[NUM_PAGESIZES];
+int num_page_sizes;
+
+int ilog2(unsigned long v)
+{
+ int l = 0;
+ while ((1UL << l) < v)
+ l++;
+ return l;
+}
+
+void find_pagesizes(void)
+{
+ glob_t g;
+ int i;
+ glob("/sys/kernel/mm/hugepages/hugepages-*kB", 0, NULL, &g);
+ assert(g.gl_pathc <= NUM_PAGESIZES);
+ for (i = 0; i < g.gl_pathc; i++) {
+ sscanf(g.gl_pathv[i], "/sys/kernel/mm/hugepages/hugepages-%lukB",
+ &page_sizes[i]);
+ page_sizes[i] <<= 10;
+ printf("Found %luMB\n", page_sizes[i] >> 20);
+ }
+ num_page_sizes = g.gl_pathc;
+ globfree(&g);
+}
+
+unsigned long default_huge_page_size(void)
+{
+ unsigned long hps = 0;
+ char *line = NULL;
+ size_t linelen = 0;
+ FILE *f = fopen("/proc/meminfo", "r");
+ if (!f)
+ return 0;
+ while (getline(&line, &linelen, f) > 0) {
+ if (sscanf(line, "Hugepagesize: %lu kB", &hps) == 1) {
+ hps <<= 10;
+ break;
+ }
+ }
+ free(line);
+ return hps;
+}
+
+void show(unsigned long ps)
+{
+ char buf[100];
+ if (ps == getpagesize())
+ return;
+ printf("%luMB: ", ps >> 20);
+ fflush(stdout);
+ snprintf(buf, sizeof buf,
+ "cat /sys/kernel/mm/hugepages/hugepages-%lukB/free_hugepages",
+ ps >> 10);
+ system(buf);
+}
+
+unsigned long read_sysfs(int warn, char *fmt, ...)
+{
+ char *line = NULL;
+ size_t linelen = 0;
+ char buf[100];
+ FILE *f;
+ va_list ap;
+ unsigned long val = 0;
+
+ va_start(ap, fmt);
+ vsnprintf(buf, sizeof buf, fmt, ap);
+ va_end(ap);
+
+ f = fopen(buf, "r");
+ if (!f) {
+ if (warn)
+ printf("missing %s\n", buf);
+ return 0;
+ }
+ if (getline(&line, &linelen, f) > 0) {
+ sscanf(line, "%lu", &val);
+ }
+ fclose(f);
+ free(line);
+ return val;
+}
+
+unsigned long read_free(unsigned long ps)
+{
+ return read_sysfs(ps != getpagesize(),
+ "/sys/kernel/mm/hugepages/hugepages-%lukB/free_hugepages",
+ ps >> 10);
+}
+
+void test_mmap(unsigned long size, unsigned flags)
+{
+ char *map;
+ unsigned long before, after;
+ int err;
+
+ before = read_free(size);
+ map = mmap(NULL, size*NUM_PAGES, PROT_READ|PROT_WRITE,
+ MAP_PRIVATE|MAP_ANONYMOUS|MAP_HUGETLB|flags, 0, 0);
+
+ if (map == (char *)-1) err("mmap");
+ memset(map, 0xff, size*NUM_PAGES);
+ after = read_free(size);
+ Dprintf("before %lu after %lu diff %ld size %lu\n",
+ before, after, before - after, size);
+ assert(size == getpagesize() || (before - after) == NUM_PAGES);
+ show(size);
+ err = munmap(map, size);
+ assert(!err);
+}
+
+void test_shmget(unsigned long size, unsigned flags)
+{
+ int id;
+ unsigned long before, after;
+ int err;
+
+ before = read_free(size);
+ id = shmget(IPC_PRIVATE, size * NUM_PAGES, IPC_CREAT|0600|flags);
+ if (id < 0) err("shmget");
+
+ struct shm_info i;
+ if (shmctl(id, SHM_INFO, (void *)&i) < 0) err("shmctl");
+ Dprintf("alloc %lu res %lu\n", i.shm_tot, i.shm_rss);
+
+
+ Dprintf("id %d\n", id);
+ char *map = shmat(id, NULL, 0600);
+ if (map == (char*)-1) err("shmat");
+
+ shmctl(id, IPC_RMID, NULL);
+
+ memset(map, 0xff, size*NUM_PAGES);
+ after = read_free(size);
+
+ Dprintf("before %lu after %lu diff %ld size %lu\n",
+ before, after, before - after, size);
+ assert(size == getpagesize() || (before - after) == NUM_PAGES);
+ show(size);
+ err = shmdt(map);
+ assert(!err);
+}
+
+void sanity_checks(void)
+{
+ int i;
+ unsigned long largest = getpagesize();
+
+ for (i = 0; i < num_page_sizes; i++) {
+ if (page_sizes[i] > largest)
+ largest = page_sizes[i];
+
+ if (read_free(page_sizes[i]) < NUM_PAGES) {
+ printf("Not enough huge pages for page size %lu MB, need %u\n",
+ page_sizes[i] >> 20,
+ NUM_PAGES);
+ exit(0);
+ }
+ }
+
+ if (read_sysfs(0, "/proc/sys/kernel/shmmax") < NUM_PAGES * largest) {
+ printf("Please do echo %lu > /proc/sys/kernel/shmmax", largest * NUM_PAGES);
+ exit(0);
+ }
+
+#if defined(__x86_64__)
+ if (largest != 1U<<30) {
+ printf("No GB pages available on x86-64\n"
+ "Please boot with hugepagesz=1G hugepages=%d\n", NUM_PAGES);
+ exit(0);
+ }
+#endif
+}
+
+int main(void)
+{
+ int i;
+ unsigned default_hps = default_huge_page_size();
+
+ find_pagesizes();
+
+ sanity_checks();
+
+ for (i = 0; i < num_page_sizes; i++) {
+ unsigned long ps = page_sizes[i];
+ int arg = ilog2(ps) << MAP_HUGE_SHIFT;
+ printf("Testing %luMB mmap with shift %x\n", ps >> 20, arg);
+ test_mmap(ps, MAP_HUGETLB | arg);
+ }
+ printf("Testing default huge mmap\n");
+ test_mmap(default_hps, SHM_HUGETLB);
+
+ puts("Testing non-huge shmget");
+ test_shmget(getpagesize(), 0);
+
+ for (i = 0; i < num_page_sizes; i++) {
+ unsigned long ps = page_sizes[i];
+ int arg = ilog2(ps) << SHM_HUGE_SHIFT;
+ printf("Testing %luMB shmget with shift %x\n", ps >> 20, arg);
+ test_shmget(ps, SHM_HUGETLB | arg);
+ }
+ puts("default huge shmget");
+ test_shmget(default_hps, SHM_HUGETLB);
+
+ return 0;
+}
generated by cgit v1.2.3 (git 2.0.4) at 2024-10-19 00:53:52 +0000