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authorLinus Torvalds <torvalds@linux-foundation.org>2018-01-31 18:46:22 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2018-01-31 18:46:22 -0800
commit73da9e1a9f310a449eeb9bf5735a9cd475fef5e2 (patch)
tree82cd78255b0a480340a8427e7ba5586df8280ac4 /tools
parentb2fe5fa68642860e7de76167c3111623aa0d5de1 (diff)
parent3f56a2f8030071cf86520ef4fc3045ba6856e610 (diff)
downloadlinux-73da9e1a9f310a449eeb9bf5735a9cd475fef5e2.tar.bz2
Merge branch 'akpm' (patches from Andrew)
Merge updates from Andrew Morton: - misc fixes - ocfs2 updates - most of MM * emailed patches from Andrew Morton <akpm@linux-foundation.org>: (118 commits) mm: remove PG_highmem description tools, vm: new option to specify kpageflags file mm/swap.c: make functions and their kernel-doc agree mm, memory_hotplug: fix memmap initialization mm: correct comments regarding do_fault_around() mm: numa: do not trap faults on shared data section pages. hugetlb, mbind: fall back to default policy if vma is NULL hugetlb, mempolicy: fix the mbind hugetlb migration mm, hugetlb: further simplify hugetlb allocation API mm, hugetlb: get rid of surplus page accounting tricks mm, hugetlb: do not rely on overcommit limit during migration mm, hugetlb: integrate giga hugetlb more naturally to the allocation path mm, hugetlb: unify core page allocation accounting and initialization mm/memcontrol.c: try harder to decrease [memory,memsw].limit_in_bytes mm/memcontrol.c: make local symbol static mm/hmm: fix uninitialized use of 'entry' in hmm_vma_walk_pmd() include/linux/mmzone.h: fix explanation of lower bits in the SPARSEMEM mem_map pointer mm/compaction.c: fix comment for try_to_compact_pages() mm/page_ext.c: make page_ext_init a noop when CONFIG_PAGE_EXTENSION but nothing uses it zsmalloc: use U suffix for negative literals being shifted ...
Diffstat (limited to 'tools')
-rw-r--r--tools/testing/selftests/memfd/Makefile5
-rw-r--r--tools/testing/selftests/memfd/common.c46
-rw-r--r--tools/testing/selftests/memfd/common.h9
-rw-r--r--tools/testing/selftests/memfd/fuse_test.c44
-rw-r--r--tools/testing/selftests/memfd/memfd_test.c212
-rwxr-xr-xtools/testing/selftests/memfd/run_fuse_test.sh2
-rwxr-xr-xtools/testing/selftests/memfd/run_tests.sh1
-rw-r--r--tools/testing/selftests/vm/Makefile5
-rwxr-xr-xtools/testing/selftests/vm/run_vmtests11
-rw-r--r--tools/testing/selftests/vm/va_128TBswitch.c297
-rw-r--r--tools/testing/selftests/x86/5lvl.c177
-rw-r--r--tools/vm/page-types.c28
12 files changed, 458 insertions, 379 deletions
diff --git a/tools/testing/selftests/memfd/Makefile b/tools/testing/selftests/memfd/Makefile
index 3926a0409dda..a5276a91dfbf 100644
--- a/tools/testing/selftests/memfd/Makefile
+++ b/tools/testing/selftests/memfd/Makefile
@@ -12,3 +12,8 @@ fuse_mnt.o: CFLAGS += $(shell pkg-config fuse --cflags)
include ../lib.mk
$(OUTPUT)/fuse_mnt: LDLIBS += $(shell pkg-config fuse --libs)
+
+$(OUTPUT)/memfd_test: memfd_test.c common.o
+$(OUTPUT)/fuse_test: fuse_test.c common.o
+
+EXTRA_CLEAN = common.o
diff --git a/tools/testing/selftests/memfd/common.c b/tools/testing/selftests/memfd/common.c
new file mode 100644
index 000000000000..8eb3d75f6e60
--- /dev/null
+++ b/tools/testing/selftests/memfd/common.c
@@ -0,0 +1,46 @@
+// SPDX-License-Identifier: GPL-2.0
+#define _GNU_SOURCE
+#define __EXPORTED_HEADERS__
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <linux/fcntl.h>
+#include <linux/memfd.h>
+#include <unistd.h>
+#include <sys/syscall.h>
+
+#include "common.h"
+
+int hugetlbfs_test = 0;
+
+/*
+ * Copied from mlock2-tests.c
+ */
+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);
+ fclose(f);
+ return hps;
+}
+
+int sys_memfd_create(const char *name, unsigned int flags)
+{
+ if (hugetlbfs_test)
+ flags |= MFD_HUGETLB;
+
+ return syscall(__NR_memfd_create, name, flags);
+}
diff --git a/tools/testing/selftests/memfd/common.h b/tools/testing/selftests/memfd/common.h
new file mode 100644
index 000000000000..522d2c630bd8
--- /dev/null
+++ b/tools/testing/selftests/memfd/common.h
@@ -0,0 +1,9 @@
+#ifndef COMMON_H_
+#define COMMON_H_
+
+extern int hugetlbfs_test;
+
+unsigned long default_huge_page_size(void);
+int sys_memfd_create(const char *name, unsigned int flags);
+
+#endif
diff --git a/tools/testing/selftests/memfd/fuse_test.c b/tools/testing/selftests/memfd/fuse_test.c
index 1ccb7a3eb14b..b018e835737d 100644
--- a/tools/testing/selftests/memfd/fuse_test.c
+++ b/tools/testing/selftests/memfd/fuse_test.c
@@ -33,14 +33,12 @@
#include <sys/wait.h>
#include <unistd.h>
+#include "common.h"
+
#define MFD_DEF_SIZE 8192
#define STACK_SIZE 65536
-static int sys_memfd_create(const char *name,
- unsigned int flags)
-{
- return syscall(__NR_memfd_create, name, flags);
-}
+static size_t mfd_def_size = MFD_DEF_SIZE;
static int mfd_assert_new(const char *name, loff_t sz, unsigned int flags)
{
@@ -127,7 +125,7 @@ static void *mfd_assert_mmap_shared(int fd)
void *p;
p = mmap(NULL,
- MFD_DEF_SIZE,
+ mfd_def_size,
PROT_READ | PROT_WRITE,
MAP_SHARED,
fd,
@@ -145,7 +143,7 @@ static void *mfd_assert_mmap_private(int fd)
void *p;
p = mmap(NULL,
- MFD_DEF_SIZE,
+ mfd_def_size,
PROT_READ | PROT_WRITE,
MAP_PRIVATE,
fd,
@@ -178,7 +176,7 @@ static int sealing_thread_fn(void *arg)
usleep(200000);
/* unmount mapping before sealing to avoid i_mmap_writable failures */
- munmap(global_p, MFD_DEF_SIZE);
+ munmap(global_p, mfd_def_size);
/* Try sealing the global file; expect EBUSY or success. Current
* kernels will never succeed, but in the future, kernels might
@@ -228,7 +226,7 @@ static void join_sealing_thread(pid_t pid)
int main(int argc, char **argv)
{
- static const char zero[MFD_DEF_SIZE];
+ char *zero;
int fd, mfd, r;
void *p;
int was_sealed;
@@ -239,6 +237,25 @@ int main(int argc, char **argv)
abort();
}
+ if (argc >= 3) {
+ if (!strcmp(argv[2], "hugetlbfs")) {
+ unsigned long hpage_size = default_huge_page_size();
+
+ if (!hpage_size) {
+ printf("Unable to determine huge page size\n");
+ abort();
+ }
+
+ hugetlbfs_test = 1;
+ mfd_def_size = hpage_size * 2;
+ } else {
+ printf("Unknown option: %s\n", argv[2]);
+ abort();
+ }
+ }
+
+ zero = calloc(sizeof(*zero), mfd_def_size);
+
/* open FUSE memfd file for GUP testing */
printf("opening: %s\n", argv[1]);
fd = open(argv[1], O_RDONLY | O_CLOEXEC);
@@ -249,7 +266,7 @@ int main(int argc, char **argv)
/* create new memfd-object */
mfd = mfd_assert_new("kern_memfd_fuse",
- MFD_DEF_SIZE,
+ mfd_def_size,
MFD_CLOEXEC | MFD_ALLOW_SEALING);
/* mmap memfd-object for writing */
@@ -268,7 +285,7 @@ int main(int argc, char **argv)
* This guarantees that the receive-buffer is pinned for 1s until the
* data is written into it. The racing ADD_SEALS should thus fail as
* the pages are still pinned. */
- r = read(fd, p, MFD_DEF_SIZE);
+ r = read(fd, p, mfd_def_size);
if (r < 0) {
printf("read() failed: %m\n");
abort();
@@ -295,10 +312,10 @@ int main(int argc, char **argv)
* enough to avoid any in-flight writes. */
p = mfd_assert_mmap_private(mfd);
- if (was_sealed && memcmp(p, zero, MFD_DEF_SIZE)) {
+ if (was_sealed && memcmp(p, zero, mfd_def_size)) {
printf("memfd sealed during read() but data not discarded\n");
abort();
- } else if (!was_sealed && !memcmp(p, zero, MFD_DEF_SIZE)) {
+ } else if (!was_sealed && !memcmp(p, zero, mfd_def_size)) {
printf("memfd sealed after read() but data discarded\n");
abort();
}
@@ -307,6 +324,7 @@ int main(int argc, char **argv)
close(fd);
printf("fuse: DONE\n");
+ free(zero);
return 0;
}
diff --git a/tools/testing/selftests/memfd/memfd_test.c b/tools/testing/selftests/memfd/memfd_test.c
index 132a54f74e88..10baa1652fc2 100644
--- a/tools/testing/selftests/memfd/memfd_test.c
+++ b/tools/testing/selftests/memfd/memfd_test.c
@@ -19,7 +19,10 @@
#include <sys/wait.h>
#include <unistd.h>
+#include "common.h"
+
#define MEMFD_STR "memfd:"
+#define MEMFD_HUGE_STR "memfd-hugetlb:"
#define SHARED_FT_STR "(shared file-table)"
#define MFD_DEF_SIZE 8192
@@ -28,41 +31,8 @@
/*
* Default is not to test hugetlbfs
*/
-static int hugetlbfs_test;
static size_t mfd_def_size = MFD_DEF_SIZE;
-
-/*
- * Copied from mlock2-tests.c
- */
-static 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);
- fclose(f);
- return hps;
-}
-
-static int sys_memfd_create(const char *name,
- unsigned int flags)
-{
- if (hugetlbfs_test)
- flags |= MFD_HUGETLB;
-
- return syscall(__NR_memfd_create, name, flags);
-}
+static const char *memfd_str = MEMFD_STR;
static int mfd_assert_new(const char *name, loff_t sz, unsigned int flags)
{
@@ -513,6 +483,10 @@ static void mfd_assert_grow_write(int fd)
static char *buf;
ssize_t l;
+ /* hugetlbfs does not support write */
+ if (hugetlbfs_test)
+ return;
+
buf = malloc(mfd_def_size * 8);
if (!buf) {
printf("malloc(%zu) failed: %m\n", mfd_def_size * 8);
@@ -533,6 +507,10 @@ static void mfd_fail_grow_write(int fd)
static char *buf;
ssize_t l;
+ /* hugetlbfs does not support write */
+ if (hugetlbfs_test)
+ return;
+
buf = malloc(mfd_def_size * 8);
if (!buf) {
printf("malloc(%zu) failed: %m\n", mfd_def_size * 8);
@@ -598,7 +576,7 @@ static void test_create(void)
char buf[2048];
int fd;
- printf("%s CREATE\n", MEMFD_STR);
+ printf("%s CREATE\n", memfd_str);
/* test NULL name */
mfd_fail_new(NULL, 0);
@@ -627,18 +605,13 @@ static void test_create(void)
fd = mfd_assert_new("", 0, MFD_CLOEXEC);
close(fd);
- if (!hugetlbfs_test) {
- /* verify MFD_ALLOW_SEALING is allowed */
- fd = mfd_assert_new("", 0, MFD_ALLOW_SEALING);
- close(fd);
-
- /* verify MFD_ALLOW_SEALING | MFD_CLOEXEC is allowed */
- fd = mfd_assert_new("", 0, MFD_ALLOW_SEALING | MFD_CLOEXEC);
- close(fd);
- } else {
- /* sealing is not supported on hugetlbfs */
- mfd_fail_new("", MFD_ALLOW_SEALING);
- }
+ /* verify MFD_ALLOW_SEALING is allowed */
+ fd = mfd_assert_new("", 0, MFD_ALLOW_SEALING);
+ close(fd);
+
+ /* verify MFD_ALLOW_SEALING | MFD_CLOEXEC is allowed */
+ fd = mfd_assert_new("", 0, MFD_ALLOW_SEALING | MFD_CLOEXEC);
+ close(fd);
}
/*
@@ -649,11 +622,7 @@ static void test_basic(void)
{
int fd;
- /* hugetlbfs does not contain sealing support */
- if (hugetlbfs_test)
- return;
-
- printf("%s BASIC\n", MEMFD_STR);
+ printf("%s BASIC\n", memfd_str);
fd = mfd_assert_new("kern_memfd_basic",
mfd_def_size,
@@ -698,28 +667,6 @@ static void test_basic(void)
}
/*
- * hugetlbfs doesn't support seals or write, so just verify grow and shrink
- * on a hugetlbfs file created via memfd_create.
- */
-static void test_hugetlbfs_grow_shrink(void)
-{
- int fd;
-
- printf("%s HUGETLBFS-GROW-SHRINK\n", MEMFD_STR);
-
- fd = mfd_assert_new("kern_memfd_seal_write",
- mfd_def_size,
- MFD_CLOEXEC);
-
- mfd_assert_read(fd);
- mfd_assert_write(fd);
- mfd_assert_shrink(fd);
- mfd_assert_grow(fd);
-
- close(fd);
-}
-
-/*
* Test SEAL_WRITE
* Test whether SEAL_WRITE actually prevents modifications.
*/
@@ -727,14 +674,7 @@ static void test_seal_write(void)
{
int fd;
- /*
- * hugetlbfs does not contain sealing or write support. Just test
- * basic grow and shrink via test_hugetlbfs_grow_shrink.
- */
- if (hugetlbfs_test)
- return test_hugetlbfs_grow_shrink();
-
- printf("%s SEAL-WRITE\n", MEMFD_STR);
+ printf("%s SEAL-WRITE\n", memfd_str);
fd = mfd_assert_new("kern_memfd_seal_write",
mfd_def_size,
@@ -760,11 +700,7 @@ static void test_seal_shrink(void)
{
int fd;
- /* hugetlbfs does not contain sealing support */
- if (hugetlbfs_test)
- return;
-
- printf("%s SEAL-SHRINK\n", MEMFD_STR);
+ printf("%s SEAL-SHRINK\n", memfd_str);
fd = mfd_assert_new("kern_memfd_seal_shrink",
mfd_def_size,
@@ -790,11 +726,7 @@ static void test_seal_grow(void)
{
int fd;
- /* hugetlbfs does not contain sealing support */
- if (hugetlbfs_test)
- return;
-
- printf("%s SEAL-GROW\n", MEMFD_STR);
+ printf("%s SEAL-GROW\n", memfd_str);
fd = mfd_assert_new("kern_memfd_seal_grow",
mfd_def_size,
@@ -820,11 +752,7 @@ static void test_seal_resize(void)
{
int fd;
- /* hugetlbfs does not contain sealing support */
- if (hugetlbfs_test)
- return;
-
- printf("%s SEAL-RESIZE\n", MEMFD_STR);
+ printf("%s SEAL-RESIZE\n", memfd_str);
fd = mfd_assert_new("kern_memfd_seal_resize",
mfd_def_size,
@@ -843,32 +771,6 @@ static void test_seal_resize(void)
}
/*
- * hugetlbfs does not support seals. Basic test to dup the memfd created
- * fd and perform some basic operations on it.
- */
-static void hugetlbfs_dup(char *b_suffix)
-{
- int fd, fd2;
-
- printf("%s HUGETLBFS-DUP %s\n", MEMFD_STR, b_suffix);
-
- fd = mfd_assert_new("kern_memfd_share_dup",
- mfd_def_size,
- MFD_CLOEXEC);
-
- fd2 = mfd_assert_dup(fd);
-
- mfd_assert_read(fd);
- mfd_assert_write(fd);
-
- mfd_assert_shrink(fd2);
- mfd_assert_grow(fd2);
-
- close(fd2);
- close(fd);
-}
-
-/*
* Test sharing via dup()
* Test that seals are shared between dupped FDs and they're all equal.
*/
@@ -876,16 +778,7 @@ static void test_share_dup(char *banner, char *b_suffix)
{
int fd, fd2;
- /*
- * hugetlbfs does not contain sealing support. Perform some
- * basic testing on dup'ed fd instead via hugetlbfs_dup.
- */
- if (hugetlbfs_test) {
- hugetlbfs_dup(b_suffix);
- return;
- }
-
- printf("%s %s %s\n", MEMFD_STR, banner, b_suffix);
+ printf("%s %s %s\n", memfd_str, banner, b_suffix);
fd = mfd_assert_new("kern_memfd_share_dup",
mfd_def_size,
@@ -927,11 +820,7 @@ static void test_share_mmap(char *banner, char *b_suffix)
int fd;
void *p;
- /* hugetlbfs does not contain sealing support */
- if (hugetlbfs_test)
- return;
-
- printf("%s %s %s\n", MEMFD_STR, banner, b_suffix);
+ printf("%s %s %s\n", memfd_str, banner, b_suffix);
fd = mfd_assert_new("kern_memfd_share_mmap",
mfd_def_size,
@@ -956,32 +845,6 @@ static void test_share_mmap(char *banner, char *b_suffix)
}
/*
- * Basic test to make sure we can open the hugetlbfs fd via /proc and
- * perform some simple operations on it.
- */
-static void hugetlbfs_proc_open(char *b_suffix)
-{
- int fd, fd2;
-
- printf("%s HUGETLBFS-PROC-OPEN %s\n", MEMFD_STR, b_suffix);
-
- fd = mfd_assert_new("kern_memfd_share_open",
- mfd_def_size,
- MFD_CLOEXEC);
-
- fd2 = mfd_assert_open(fd, O_RDWR, 0);
-
- mfd_assert_read(fd);
- mfd_assert_write(fd);
-
- mfd_assert_shrink(fd2);
- mfd_assert_grow(fd2);
-
- close(fd2);
- close(fd);
-}
-
-/*
* Test sealing with open(/proc/self/fd/%d)
* Via /proc we can get access to a separate file-context for the same memfd.
* This is *not* like dup(), but like a real separate open(). Make sure the
@@ -991,16 +854,7 @@ static void test_share_open(char *banner, char *b_suffix)
{
int fd, fd2;
- /*
- * hugetlbfs does not contain sealing support. So test basic
- * functionality of using /proc fd via hugetlbfs_proc_open
- */
- if (hugetlbfs_test) {
- hugetlbfs_proc_open(b_suffix);
- return;
- }
-
- printf("%s %s %s\n", MEMFD_STR, banner, b_suffix);
+ printf("%s %s %s\n", memfd_str, banner, b_suffix);
fd = mfd_assert_new("kern_memfd_share_open",
mfd_def_size,
@@ -1043,11 +897,7 @@ static void test_share_fork(char *banner, char *b_suffix)
int fd;
pid_t pid;
- /* hugetlbfs does not contain sealing support */
- if (hugetlbfs_test)
- return;
-
- printf("%s %s %s\n", MEMFD_STR, banner, b_suffix);
+ printf("%s %s %s\n", memfd_str, banner, b_suffix);
fd = mfd_assert_new("kern_memfd_share_fork",
mfd_def_size,
@@ -1083,7 +933,11 @@ int main(int argc, char **argv)
}
hugetlbfs_test = 1;
+ memfd_str = MEMFD_HUGE_STR;
mfd_def_size = hpage_size * 2;
+ } else {
+ printf("Unknown option: %s\n", argv[1]);
+ abort();
}
}
diff --git a/tools/testing/selftests/memfd/run_fuse_test.sh b/tools/testing/selftests/memfd/run_fuse_test.sh
index 407df68dfe27..22e572e2d66a 100755
--- a/tools/testing/selftests/memfd/run_fuse_test.sh
+++ b/tools/testing/selftests/memfd/run_fuse_test.sh
@@ -10,6 +10,6 @@ set -e
mkdir mnt
./fuse_mnt ./mnt
-./fuse_test ./mnt/memfd
+./fuse_test ./mnt/memfd $@
fusermount -u ./mnt
rmdir ./mnt
diff --git a/tools/testing/selftests/memfd/run_tests.sh b/tools/testing/selftests/memfd/run_tests.sh
index daabb350697c..c2d41ed81b24 100755
--- a/tools/testing/selftests/memfd/run_tests.sh
+++ b/tools/testing/selftests/memfd/run_tests.sh
@@ -60,6 +60,7 @@ fi
# Run the hugetlbfs test
#
./memfd_test hugetlbfs
+./run_fuse_test.sh hugetlbfs
#
# Give back any huge pages allocated for the test
diff --git a/tools/testing/selftests/vm/Makefile b/tools/testing/selftests/vm/Makefile
index 7f45806bd863..fdefa2295ddc 100644
--- a/tools/testing/selftests/vm/Makefile
+++ b/tools/testing/selftests/vm/Makefile
@@ -8,17 +8,18 @@ endif
CFLAGS = -Wall -I ../../../../usr/include $(EXTRA_CFLAGS)
LDLIBS = -lrt
TEST_GEN_FILES = compaction_test
+TEST_GEN_FILES += gup_benchmark
TEST_GEN_FILES += hugepage-mmap
TEST_GEN_FILES += hugepage-shm
TEST_GEN_FILES += map_hugetlb
+TEST_GEN_FILES += mlock-random-test
TEST_GEN_FILES += mlock2-tests
TEST_GEN_FILES += on-fault-limit
TEST_GEN_FILES += thuge-gen
TEST_GEN_FILES += transhuge-stress
TEST_GEN_FILES += userfaultfd
-TEST_GEN_FILES += mlock-random-test
+TEST_GEN_FILES += va_128TBswitch
TEST_GEN_FILES += virtual_address_range
-TEST_GEN_FILES += gup_benchmark
TEST_PROGS := run_vmtests
diff --git a/tools/testing/selftests/vm/run_vmtests b/tools/testing/selftests/vm/run_vmtests
index cc826326de87..d2561895a021 100755
--- a/tools/testing/selftests/vm/run_vmtests
+++ b/tools/testing/selftests/vm/run_vmtests
@@ -177,4 +177,15 @@ else
echo "[PASS]"
fi
+echo "-----------------------------"
+echo "running virtual address 128TB switch test"
+echo "-----------------------------"
+./va_128TBswitch
+if [ $? -ne 0 ]; then
+ echo "[FAIL]"
+ exitcode=1
+else
+ echo "[PASS]"
+fi
+
exit $exitcode
diff --git a/tools/testing/selftests/vm/va_128TBswitch.c b/tools/testing/selftests/vm/va_128TBswitch.c
new file mode 100644
index 000000000000..e7fe734c374f
--- /dev/null
+++ b/tools/testing/selftests/vm/va_128TBswitch.c
@@ -0,0 +1,297 @@
+/*
+ *
+ * Authors: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
+ * Authors: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License, version 2, as
+ * published by the Free Software Foundation.
+
+ * This program is distributed in the hope that it would be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+ *
+ */
+
+#include <stdio.h>
+#include <sys/mman.h>
+#include <string.h>
+
+#define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]))
+
+#ifdef __powerpc64__
+#define PAGE_SIZE (64 << 10)
+/*
+ * This will work with 16M and 2M hugepage size
+ */
+#define HUGETLB_SIZE (16 << 20)
+#else
+#define PAGE_SIZE (4 << 10)
+#define HUGETLB_SIZE (2 << 20)
+#endif
+
+/*
+ * >= 128TB is the hint addr value we used to select
+ * large address space.
+ */
+#define ADDR_SWITCH_HINT (1UL << 47)
+#define LOW_ADDR ((void *) (1UL << 30))
+#define HIGH_ADDR ((void *) (1UL << 48))
+
+struct testcase {
+ void *addr;
+ unsigned long size;
+ unsigned long flags;
+ const char *msg;
+ unsigned int low_addr_required:1;
+ unsigned int keep_mapped:1;
+};
+
+static struct testcase testcases[] = {
+ {
+ /*
+ * If stack is moved, we could possibly allocate
+ * this at the requested address.
+ */
+ .addr = ((void *)(ADDR_SWITCH_HINT - PAGE_SIZE)),
+ .size = PAGE_SIZE,
+ .flags = MAP_PRIVATE | MAP_ANONYMOUS,
+ .msg = "mmap(ADDR_SWITCH_HINT - PAGE_SIZE, PAGE_SIZE)",
+ .low_addr_required = 1,
+ },
+ {
+ /*
+ * We should never allocate at the requested address or above it
+ * The len cross the 128TB boundary. Without MAP_FIXED
+ * we will always search in the lower address space.
+ */
+ .addr = ((void *)(ADDR_SWITCH_HINT - PAGE_SIZE)),
+ .size = 2 * PAGE_SIZE,
+ .flags = MAP_PRIVATE | MAP_ANONYMOUS,
+ .msg = "mmap(ADDR_SWITCH_HINT - PAGE_SIZE, (2 * PAGE_SIZE))",
+ .low_addr_required = 1,
+ },
+ {
+ /*
+ * Exact mapping at 128TB, the area is free we should get that
+ * even without MAP_FIXED.
+ */
+ .addr = ((void *)(ADDR_SWITCH_HINT)),
+ .size = PAGE_SIZE,
+ .flags = MAP_PRIVATE | MAP_ANONYMOUS,
+ .msg = "mmap(ADDR_SWITCH_HINT, PAGE_SIZE)",
+ .keep_mapped = 1,
+ },
+ {
+ .addr = (void *)(ADDR_SWITCH_HINT),
+ .size = 2 * PAGE_SIZE,
+ .flags = MAP_PRIVATE | MAP_ANONYMOUS | MAP_FIXED,
+ .msg = "mmap(ADDR_SWITCH_HINT, 2 * PAGE_SIZE, MAP_FIXED)",
+ },
+ {
+ .addr = NULL,
+ .size = 2 * PAGE_SIZE,
+ .flags = MAP_PRIVATE | MAP_ANONYMOUS,
+ .msg = "mmap(NULL)",
+ .low_addr_required = 1,
+ },
+ {
+ .addr = LOW_ADDR,
+ .size = 2 * PAGE_SIZE,
+ .flags = MAP_PRIVATE | MAP_ANONYMOUS,
+ .msg = "mmap(LOW_ADDR)",
+ .low_addr_required = 1,
+ },
+ {
+ .addr = HIGH_ADDR,
+ .size = 2 * PAGE_SIZE,
+ .flags = MAP_PRIVATE | MAP_ANONYMOUS,
+ .msg = "mmap(HIGH_ADDR)",
+ .keep_mapped = 1,
+ },
+ {
+ .addr = HIGH_ADDR,
+ .size = 2 * PAGE_SIZE,
+ .flags = MAP_PRIVATE | MAP_ANONYMOUS,
+ .msg = "mmap(HIGH_ADDR) again",
+ .keep_mapped = 1,
+ },
+ {
+ .addr = HIGH_ADDR,
+ .size = 2 * PAGE_SIZE,
+ .flags = MAP_PRIVATE | MAP_ANONYMOUS | MAP_FIXED,
+ .msg = "mmap(HIGH_ADDR, MAP_FIXED)",
+ },
+ {
+ .addr = (void *) -1,
+ .size = 2 * PAGE_SIZE,
+ .flags = MAP_PRIVATE | MAP_ANONYMOUS,
+ .msg = "mmap(-1)",
+ .keep_mapped = 1,
+ },
+ {
+ .addr = (void *) -1,
+ .size = 2 * PAGE_SIZE,
+ .flags = MAP_PRIVATE | MAP_ANONYMOUS,
+ .msg = "mmap(-1) again",
+ },
+ {
+ .addr = ((void *)(ADDR_SWITCH_HINT - PAGE_SIZE)),
+ .size = PAGE_SIZE,
+ .flags = MAP_PRIVATE | MAP_ANONYMOUS,
+ .msg = "mmap(ADDR_SWITCH_HINT - PAGE_SIZE, PAGE_SIZE)",
+ .low_addr_required = 1,
+ },
+ {
+ .addr = (void *)(ADDR_SWITCH_HINT - PAGE_SIZE),
+ .size = 2 * PAGE_SIZE,
+ .flags = MAP_PRIVATE | MAP_ANONYMOUS,
+ .msg = "mmap(ADDR_SWITCH_HINT - PAGE_SIZE, 2 * PAGE_SIZE)",
+ .low_addr_required = 1,
+ .keep_mapped = 1,
+ },
+ {
+ .addr = (void *)(ADDR_SWITCH_HINT - PAGE_SIZE / 2),
+ .size = 2 * PAGE_SIZE,
+ .flags = MAP_PRIVATE | MAP_ANONYMOUS,
+ .msg = "mmap(ADDR_SWITCH_HINT - PAGE_SIZE/2 , 2 * PAGE_SIZE)",
+ .low_addr_required = 1,
+ .keep_mapped = 1,
+ },
+ {
+ .addr = ((void *)(ADDR_SWITCH_HINT)),
+ .size = PAGE_SIZE,
+ .flags = MAP_PRIVATE | MAP_ANONYMOUS,
+ .msg = "mmap(ADDR_SWITCH_HINT, PAGE_SIZE)",
+ },
+ {
+ .addr = (void *)(ADDR_SWITCH_HINT),
+ .size = 2 * PAGE_SIZE,
+ .flags = MAP_PRIVATE | MAP_ANONYMOUS | MAP_FIXED,
+ .msg = "mmap(ADDR_SWITCH_HINT, 2 * PAGE_SIZE, MAP_FIXED)",
+ },
+};
+
+static struct testcase hugetlb_testcases[] = {
+ {
+ .addr = NULL,
+ .size = HUGETLB_SIZE,
+ .flags = MAP_HUGETLB | MAP_PRIVATE | MAP_ANONYMOUS,
+ .msg = "mmap(NULL, MAP_HUGETLB)",
+ .low_addr_required = 1,
+ },
+ {
+ .addr = LOW_ADDR,
+ .size = HUGETLB_SIZE,
+ .flags = MAP_HUGETLB | MAP_PRIVATE | MAP_ANONYMOUS,
+ .msg = "mmap(LOW_ADDR, MAP_HUGETLB)",
+ .low_addr_required = 1,
+ },
+ {
+ .addr = HIGH_ADDR,
+ .size = HUGETLB_SIZE,
+ .flags = MAP_HUGETLB | MAP_PRIVATE | MAP_ANONYMOUS,
+ .msg = "mmap(HIGH_ADDR, MAP_HUGETLB)",
+ .keep_mapped = 1,
+ },
+ {
+ .addr = HIGH_ADDR,
+ .size = HUGETLB_SIZE,
+ .flags = MAP_HUGETLB | MAP_PRIVATE | MAP_ANONYMOUS,
+ .msg = "mmap(HIGH_ADDR, MAP_HUGETLB) again",
+ .keep_mapped = 1,
+ },
+ {
+ .addr = HIGH_ADDR,
+ .size = HUGETLB_SIZE,
+ .flags = MAP_HUGETLB | MAP_PRIVATE | MAP_ANONYMOUS | MAP_FIXED,
+ .msg = "mmap(HIGH_ADDR, MAP_FIXED | MAP_HUGETLB)",
+ },
+ {
+ .addr = (void *) -1,
+ .size = HUGETLB_SIZE,
+ .flags = MAP_HUGETLB | MAP_PRIVATE | MAP_ANONYMOUS,
+ .msg = "mmap(-1, MAP_HUGETLB)",
+ .keep_mapped = 1,
+ },
+ {
+ .addr = (void *) -1,
+ .size = HUGETLB_SIZE,
+ .flags = MAP_HUGETLB | MAP_PRIVATE | MAP_ANONYMOUS,
+ .msg = "mmap(-1, MAP_HUGETLB) again",
+ },
+ {
+ .addr = (void *)(ADDR_SWITCH_HINT - PAGE_SIZE),
+ .size = 2 * HUGETLB_SIZE,
+ .flags = MAP_HUGETLB | MAP_PRIVATE | MAP_ANONYMOUS,
+ .msg = "mmap(ADDR_SWITCH_HINT - PAGE_SIZE, 2*HUGETLB_SIZE, MAP_HUGETLB)",
+ .low_addr_required = 1,
+ .keep_mapped = 1,
+ },
+ {
+ .addr = (void *)(ADDR_SWITCH_HINT),
+ .size = 2 * HUGETLB_SIZE,
+ .flags = MAP_HUGETLB | MAP_PRIVATE | MAP_ANONYMOUS | MAP_FIXED,
+ .msg = "mmap(ADDR_SWITCH_HINT , 2*HUGETLB_SIZE, MAP_FIXED | MAP_HUGETLB)",
+ },
+};
+
+static int run_test(struct testcase *test, int count)
+{
+ void *p;
+ int i, ret = 0;
+
+ for (i = 0; i < count; i++) {
+ struct testcase *t = test + i;
+
+ p = mmap(t->addr, t->size, PROT_READ | PROT_WRITE, t->flags, -1, 0);
+
+ printf("%s: %p - ", t->msg, p);
+
+ if (p == MAP_FAILED) {
+ printf("FAILED\n");
+ ret = 1;
+ continue;
+ }
+
+ if (t->low_addr_required && p >= (void *)(ADDR_SWITCH_HINT)) {
+ printf("FAILED\n");
+ ret = 1;
+ } else {
+ /*
+ * Do a dereference of the address returned so that we catch
+ * bugs in page fault handling
+ */
+ memset(p, 0, t->size);
+ printf("OK\n");
+ }
+ if (!t->keep_mapped)
+ munmap(p, t->size);
+ }
+
+ return ret;
+}
+
+static int supported_arch(void)
+{
+#if defined(__powerpc64__)
+ return 1;
+#elif defined(__x86_64__)
+ return 1;
+#else
+ return 0;
+#endif
+}
+
+int main(int argc, char **argv)
+{
+ int ret;
+
+ if (!supported_arch())
+ return 0;
+
+ ret = run_test(testcases, ARRAY_SIZE(testcases));
+ if (argc == 2 && !strcmp(argv[1], "--run-hugetlb"))
+ ret = run_test(hugetlb_testcases, ARRAY_SIZE(hugetlb_testcases));
+ return ret;
+}
diff --git a/tools/testing/selftests/x86/5lvl.c b/tools/testing/selftests/x86/5lvl.c
deleted file mode 100644
index 2eafdcd4c2b3..000000000000
--- a/tools/testing/selftests/x86/5lvl.c
+++ /dev/null
@@ -1,177 +0,0 @@
-#include <stdio.h>
-#include <sys/mman.h>
-
-#define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]))
-
-#define PAGE_SIZE 4096
-#define LOW_ADDR ((void *) (1UL << 30))
-#define HIGH_ADDR ((void *) (1UL << 50))
-
-struct testcase {
- void *addr;
- unsigned long size;
- unsigned long flags;
- const char *msg;
- unsigned int low_addr_required:1;
- unsigned int keep_mapped:1;
-};
-
-static struct testcase testcases[] = {
- {
- .addr = NULL,
- .size = 2 * PAGE_SIZE,
- .flags = MAP_PRIVATE | MAP_ANONYMOUS,
- .msg = "mmap(NULL)",
- .low_addr_required = 1,
- },
- {
- .addr = LOW_ADDR,
- .size = 2 * PAGE_SIZE,
- .flags = MAP_PRIVATE | MAP_ANONYMOUS,
- .msg = "mmap(LOW_ADDR)",
- .low_addr_required = 1,
- },
- {
- .addr = HIGH_ADDR,
- .size = 2 * PAGE_SIZE,
- .flags = MAP_PRIVATE | MAP_ANONYMOUS,
- .msg = "mmap(HIGH_ADDR)",
- .keep_mapped = 1,
- },
- {
- .addr = HIGH_ADDR,
- .size = 2 * PAGE_SIZE,
- .flags = MAP_PRIVATE | MAP_ANONYMOUS,
- .msg = "mmap(HIGH_ADDR) again",
- .keep_mapped = 1,
- },
- {
- .addr = HIGH_ADDR,
- .size = 2 * PAGE_SIZE,
- .flags = MAP_PRIVATE | MAP_ANONYMOUS | MAP_FIXED,
- .msg = "mmap(HIGH_ADDR, MAP_FIXED)",
- },
- {
- .addr = (void*) -1,
- .size = 2 * PAGE_SIZE,
- .flags = MAP_PRIVATE | MAP_ANONYMOUS,
- .msg = "mmap(-1)",
- .keep_mapped = 1,
- },
- {
- .addr = (void*) -1,
- .size = 2 * PAGE_SIZE,
- .flags = MAP_PRIVATE | MAP_ANONYMOUS,
- .msg = "mmap(-1) again",
- },
- {
- .addr = (void *)((1UL << 47) - PAGE_SIZE),
- .size = 2 * PAGE_SIZE,
- .flags = MAP_PRIVATE | MAP_ANONYMOUS,
- .msg = "mmap((1UL << 47), 2 * PAGE_SIZE)",
- .low_addr_required = 1,
- .keep_mapped = 1,
- },
- {
- .addr = (void *)((1UL << 47) - PAGE_SIZE / 2),
- .size = 2 * PAGE_SIZE,
- .flags = MAP_PRIVATE | MAP_ANONYMOUS,
- .msg = "mmap((1UL << 47), 2 * PAGE_SIZE / 2)",
- .low_addr_required = 1,
- .keep_mapped = 1,
- },
- {
- .addr = (void *)((1UL << 47) - PAGE_SIZE),
- .size = 2 * PAGE_SIZE,
- .flags = MAP_PRIVATE | MAP_ANONYMOUS | MAP_FIXED,
- .msg = "mmap((1UL << 47) - PAGE_SIZE, 2 * PAGE_SIZE, MAP_FIXED)",
- },
- {
- .addr = NULL,
- .size = 2UL << 20,
- .flags = MAP_HUGETLB | MAP_PRIVATE | MAP_ANONYMOUS,
- .msg = "mmap(NULL, MAP_HUGETLB)",
- .low_addr_required = 1,
- },
- {
- .addr = LOW_ADDR,
- .size = 2UL << 20,
- .flags = MAP_HUGETLB | MAP_PRIVATE | MAP_ANONYMOUS,
- .msg = "mmap(LOW_ADDR, MAP_HUGETLB)",
- .low_addr_required = 1,
- },
- {
- .addr = HIGH_ADDR,
- .size = 2UL << 20,
- .flags = MAP_HUGETLB | MAP_PRIVATE | MAP_ANONYMOUS,
- .msg = "mmap(HIGH_ADDR, MAP_HUGETLB)",
- .keep_mapped = 1,
- },
- {
- .addr = HIGH_ADDR,
- .size = 2UL << 20,
- .flags = MAP_HUGETLB | MAP_PRIVATE | MAP_ANONYMOUS,
- .msg = "mmap(HIGH_ADDR, MAP_HUGETLB) again",
- .keep_mapped = 1,
- },
- {
- .addr = HIGH_ADDR,
- .size = 2UL << 20,
- .flags = MAP_HUGETLB | MAP_PRIVATE | MAP_ANONYMOUS | MAP_FIXED,
- .msg = "mmap(HIGH_ADDR, MAP_FIXED | MAP_HUGETLB)",
- },
- {
- .addr = (void*) -1,
- .size = 2UL << 20,
- .flags = MAP_HUGETLB | MAP_PRIVATE | MAP_ANONYMOUS,
- .msg = "mmap(-1, MAP_HUGETLB)",
- .keep_mapped = 1,
- },
- {
- .addr = (void*) -1,
- .size = 2UL << 20,
- .flags = MAP_HUGETLB | MAP_PRIVATE | MAP_ANONYMOUS,
- .msg = "mmap(-1, MAP_HUGETLB) again",
- },
- {
- .addr = (void *)((1UL << 47) - PAGE_SIZE),
- .size = 4UL << 20,
- .flags = MAP_HUGETLB | MAP_PRIVATE | MAP_ANONYMOUS,
- .msg = "mmap((1UL << 47), 4UL << 20, MAP_HUGETLB)",
- .low_addr_required = 1,
- .keep_mapped = 1,
- },
- {
- .addr = (void *)((1UL << 47) - (2UL << 20)),
- .size = 4UL << 20,
- .flags = MAP_HUGETLB | MAP_PRIVATE | MAP_ANONYMOUS | MAP_FIXED,
- .msg = "mmap((1UL << 47) - (2UL << 20), 4UL << 20, MAP_FIXED | MAP_HUGETLB)",
- },
-};
-
-int main(int argc, char **argv)
-{
- int i;
- void *p;
-
- for (i = 0; i < ARRAY_SIZE(testcases); i++) {
- struct testcase *t = testcases + i;
-
- p = mmap(t->addr, t->size, PROT_NONE, t->flags, -1, 0);
-
- printf("%s: %p - ", t->msg, p);
-
- if (p == MAP_FAILED) {
- printf("FAILED\n");
- continue;
- }
-
- if (t->low_addr_required && p >= (void *)(1UL << 47))
- printf("FAILED\n");
- else
- printf("OK\n");
- if (!t->keep_mapped)
- munmap(p, t->size);
- }
- return 0;
-}
diff --git a/tools/vm/page-types.c b/tools/vm/page-types.c
index e92903fc7113..a8783f48f77f 100644
--- a/tools/vm/page-types.c
+++ b/tools/vm/page-types.c
@@ -169,9 +169,10 @@ static int opt_raw; /* for kernel developers */
static int opt_list; /* list pages (in ranges) */
static int opt_no_summary; /* don't show summary */
static pid_t opt_pid; /* process to walk */
-const char * opt_file; /* file or directory path */
+const char *opt_file; /* file or directory path */
static uint64_t opt_cgroup; /* cgroup inode */
static int opt_list_cgroup;/* list page cgroup */
+static const char *opt_kpageflags;/* kpageflags file to parse */
#define MAX_ADDR_RANGES 1024
static int nr_addr_ranges;
@@ -258,7 +259,7 @@ static int checked_open(const char *pathname, int flags)
* pagemap/kpageflags routines
*/
-static unsigned long do_u64_read(int fd, char *name,
+static unsigned long do_u64_read(int fd, const char *name,
uint64_t *buf,
unsigned long index,
unsigned long count)
@@ -283,7 +284,7 @@ static unsigned long kpageflags_read(uint64_t *buf,
unsigned long index,
unsigned long pages)
{
- return do_u64_read(kpageflags_fd, PROC_KPAGEFLAGS, buf, index, pages);
+ return do_u64_read(kpageflags_fd, opt_kpageflags, buf, index, pages);
}
static unsigned long kpagecgroup_read(uint64_t *buf,
@@ -293,7 +294,7 @@ static unsigned long kpagecgroup_read(uint64_t *buf,
if (kpagecgroup_fd < 0)
return pages;
- return do_u64_read(kpagecgroup_fd, PROC_KPAGEFLAGS, buf, index, pages);
+ return do_u64_read(kpagecgroup_fd, opt_kpageflags, buf, index, pages);
}
static unsigned long pagemap_read(uint64_t *buf,
@@ -743,7 +744,7 @@ static void walk_addr_ranges(void)
{
int i;
- kpageflags_fd = checked_open(PROC_KPAGEFLAGS, O_RDONLY);
+ kpageflags_fd = checked_open(opt_kpageflags, O_RDONLY);
if (!nr_addr_ranges)
add_addr_range(0, ULONG_MAX);
@@ -790,6 +791,7 @@ static void usage(void)
" -N|--no-summary Don't show summary info\n"
" -X|--hwpoison hwpoison pages\n"
" -x|--unpoison unpoison pages\n"
+" -F|--kpageflags filename kpageflags file to parse\n"
" -h|--help Show this usage message\n"
"flags:\n"
" 0x10 bitfield format, e.g.\n"
@@ -1013,7 +1015,7 @@ static void walk_page_cache(void)
{
struct stat st;
- kpageflags_fd = checked_open(PROC_KPAGEFLAGS, O_RDONLY);
+ kpageflags_fd = checked_open(opt_kpageflags, O_RDONLY);
pagemap_fd = checked_open("/proc/self/pagemap", O_RDONLY);
sigaction(SIGBUS, &sigbus_action, NULL);
@@ -1164,6 +1166,11 @@ static void parse_bits_mask(const char *optarg)
add_bits_filter(mask, bits);
}
+static void parse_kpageflags(const char *name)
+{
+ opt_kpageflags = name;
+}
+
static void describe_flags(const char *optarg)
{
uint64_t flags = parse_flag_names(optarg, 0);
@@ -1188,6 +1195,7 @@ static const struct option opts[] = {
{ "no-summary", 0, NULL, 'N' },
{ "hwpoison" , 0, NULL, 'X' },
{ "unpoison" , 0, NULL, 'x' },
+ { "kpageflags", 0, NULL, 'F' },
{ "help" , 0, NULL, 'h' },
{ NULL , 0, NULL, 0 }
};
@@ -1199,7 +1207,7 @@ int main(int argc, char *argv[])
page_size = getpagesize();
while ((c = getopt_long(argc, argv,
- "rp:f:a:b:d:c:ClLNXxh", opts, NULL)) != -1) {
+ "rp:f:a:b:d:c:ClLNXxF:h", opts, NULL)) != -1) {
switch (c) {
case 'r':
opt_raw = 1;
@@ -1242,6 +1250,9 @@ int main(int argc, char *argv[])
opt_unpoison = 1;
prepare_hwpoison_fd();
break;
+ case 'F':
+ parse_kpageflags(optarg);
+ break;
case 'h':
usage();
exit(0);
@@ -1251,6 +1262,9 @@ int main(int argc, char *argv[])
}
}
+ if (!opt_kpageflags)
+ opt_kpageflags = PROC_KPAGEFLAGS;
+
if (opt_cgroup || opt_list_cgroup)
kpagecgroup_fd = checked_open(PROC_KPAGECGROUP, O_RDONLY);