summaryrefslogtreecommitdiff
path: root/tools/testing/selftests/mm
diff options
context:
space:
mode:
Diffstat (limited to 'tools/testing/selftests/mm')
-rw-r--r--tools/testing/selftests/mm/config3
-rw-r--r--tools/testing/selftests/mm/gup_longterm.c7
-rw-r--r--tools/testing/selftests/mm/ksm_tests.c32
-rw-r--r--tools/testing/selftests/mm/merge.c46
-rw-r--r--tools/testing/selftests/mm/settings2
-rw-r--r--tools/testing/selftests/mm/split_huge_page_test.c3
-rw-r--r--tools/testing/selftests/mm/thuge-gen.c6
-rw-r--r--tools/testing/selftests/mm/virtual_address_range.c7
-rw-r--r--tools/testing/selftests/mm/vm_util.c38
-rw-r--r--tools/testing/selftests/mm/vm_util.h2
10 files changed, 108 insertions, 38 deletions
diff --git a/tools/testing/selftests/mm/config b/tools/testing/selftests/mm/config
index a28baa536332..deba93379c80 100644
--- a/tools/testing/selftests/mm/config
+++ b/tools/testing/selftests/mm/config
@@ -8,3 +8,6 @@ CONFIG_GUP_TEST=y
CONFIG_TRANSPARENT_HUGEPAGE=y
CONFIG_MEM_SOFT_DIRTY=y
CONFIG_ANON_VMA_NAME=y
+CONFIG_FTRACE=y
+CONFIG_PROFILING=y
+CONFIG_UPROBES=y
diff --git a/tools/testing/selftests/mm/gup_longterm.c b/tools/testing/selftests/mm/gup_longterm.c
index 8a97ac5176a4..29047d2e0c49 100644
--- a/tools/testing/selftests/mm/gup_longterm.c
+++ b/tools/testing/selftests/mm/gup_longterm.c
@@ -298,8 +298,11 @@ static void run_with_memfd(test_fn fn, const char *desc)
log_test_start("%s ... with memfd", desc);
fd = memfd_create("test", 0);
- if (fd < 0)
+ if (fd < 0) {
ksft_print_msg("memfd_create() failed (%s)\n", strerror(errno));
+ log_test_result(KSFT_SKIP);
+ return;
+ }
fn(fd, pagesize);
close(fd);
@@ -366,6 +369,8 @@ static void run_with_memfd_hugetlb(test_fn fn, const char *desc,
fd = memfd_create("test", flags);
if (fd < 0) {
ksft_print_msg("memfd_create() failed (%s)\n", strerror(errno));
+ log_test_result(KSFT_SKIP);
+ return;
}
fn(fd, hugetlbsize);
diff --git a/tools/testing/selftests/mm/ksm_tests.c b/tools/testing/selftests/mm/ksm_tests.c
index dcdd5bb20f3d..e80deac1436b 100644
--- a/tools/testing/selftests/mm/ksm_tests.c
+++ b/tools/testing/selftests/mm/ksm_tests.c
@@ -58,40 +58,12 @@ int debug;
static int ksm_write_sysfs(const char *file_path, unsigned long val)
{
- FILE *f = fopen(file_path, "w");
-
- if (!f) {
- fprintf(stderr, "f %s\n", file_path);
- perror("fopen");
- return 1;
- }
- if (fprintf(f, "%lu", val) < 0) {
- perror("fprintf");
- fclose(f);
- return 1;
- }
- fclose(f);
-
- return 0;
+ return write_sysfs(file_path, val);
}
static int ksm_read_sysfs(const char *file_path, unsigned long *val)
{
- FILE *f = fopen(file_path, "r");
-
- if (!f) {
- fprintf(stderr, "f %s\n", file_path);
- perror("fopen");
- return 1;
- }
- if (fscanf(f, "%lu", val) != 1) {
- perror("fscanf");
- fclose(f);
- return 1;
- }
- fclose(f);
-
- return 0;
+ return read_sysfs(file_path, val);
}
static void ksm_print_sysfs(void)
diff --git a/tools/testing/selftests/mm/merge.c b/tools/testing/selftests/mm/merge.c
index c76646cdf6e6..cc26480098ae 100644
--- a/tools/testing/selftests/mm/merge.c
+++ b/tools/testing/selftests/mm/merge.c
@@ -2,11 +2,14 @@
#define _GNU_SOURCE
#include "../kselftest_harness.h"
+#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <sys/mman.h>
+#include <sys/syscall.h>
#include <sys/wait.h>
+#include <linux/perf_event.h>
#include "vm_util.h"
FIXTURE(merge)
@@ -452,4 +455,47 @@ TEST_F(merge, forked_source_vma)
ASSERT_EQ(procmap->query.vma_end, (unsigned long)ptr2 + 5 * page_size);
}
+TEST_F(merge, handle_uprobe_upon_merged_vma)
+{
+ const size_t attr_sz = sizeof(struct perf_event_attr);
+ unsigned int page_size = self->page_size;
+ const char *probe_file = "./foo";
+ char *carveout = self->carveout;
+ struct perf_event_attr attr;
+ unsigned long type;
+ void *ptr1, *ptr2;
+ int fd;
+
+ fd = open(probe_file, O_RDWR|O_CREAT, 0600);
+ ASSERT_GE(fd, 0);
+
+ ASSERT_EQ(ftruncate(fd, page_size), 0);
+ if (read_sysfs("/sys/bus/event_source/devices/uprobe/type", &type) != 0) {
+ SKIP(goto out, "Failed to read uprobe sysfs file, skipping");
+ }
+
+ memset(&attr, 0, attr_sz);
+ attr.size = attr_sz;
+ attr.type = type;
+ attr.config1 = (__u64)(long)probe_file;
+ attr.config2 = 0x0;
+
+ ASSERT_GE(syscall(__NR_perf_event_open, &attr, 0, -1, -1, 0), 0);
+
+ ptr1 = mmap(&carveout[page_size], 10 * page_size, PROT_EXEC,
+ MAP_PRIVATE | MAP_FIXED, fd, 0);
+ ASSERT_NE(ptr1, MAP_FAILED);
+
+ ptr2 = mremap(ptr1, page_size, 2 * page_size,
+ MREMAP_MAYMOVE | MREMAP_FIXED, ptr1 + 5 * page_size);
+ ASSERT_NE(ptr2, MAP_FAILED);
+
+ ASSERT_NE(mremap(ptr2, page_size, page_size,
+ MREMAP_MAYMOVE | MREMAP_FIXED, ptr1), MAP_FAILED);
+
+out:
+ close(fd);
+ remove(probe_file);
+}
+
TEST_HARNESS_MAIN
diff --git a/tools/testing/selftests/mm/settings b/tools/testing/selftests/mm/settings
index a953c96aa16e..e2206265f67c 100644
--- a/tools/testing/selftests/mm/settings
+++ b/tools/testing/selftests/mm/settings
@@ -1 +1 @@
-timeout=180
+timeout=900
diff --git a/tools/testing/selftests/mm/split_huge_page_test.c b/tools/testing/selftests/mm/split_huge_page_test.c
index aa7400ed0e99..f0d9c035641d 100644
--- a/tools/testing/selftests/mm/split_huge_page_test.c
+++ b/tools/testing/selftests/mm/split_huge_page_test.c
@@ -31,6 +31,7 @@ uint64_t pmd_pagesize;
#define INPUT_MAX 80
#define PID_FMT "%d,0x%lx,0x%lx,%d"
+#define PID_FMT_OFFSET "%d,0x%lx,0x%lx,%d,%d"
#define PATH_FMT "%s,0x%lx,0x%lx,%d"
#define PFN_MASK ((1UL<<55)-1)
@@ -483,7 +484,7 @@ void split_thp_in_pagecache_to_order_at(size_t fd_size, const char *fs_loc,
write_debugfs(PID_FMT, getpid(), (uint64_t)addr,
(uint64_t)addr + fd_size, order);
else
- write_debugfs(PID_FMT, getpid(), (uint64_t)addr,
+ write_debugfs(PID_FMT_OFFSET, getpid(), (uint64_t)addr,
(uint64_t)addr + fd_size, order, offset);
for (i = 0; i < fd_size; i++)
diff --git a/tools/testing/selftests/mm/thuge-gen.c b/tools/testing/selftests/mm/thuge-gen.c
index a41bc1234b37..95b6f043a3cb 100644
--- a/tools/testing/selftests/mm/thuge-gen.c
+++ b/tools/testing/selftests/mm/thuge-gen.c
@@ -77,7 +77,7 @@ void show(unsigned long ps)
system(buf);
}
-unsigned long read_sysfs(int warn, char *fmt, ...)
+unsigned long thuge_read_sysfs(int warn, char *fmt, ...)
{
char *line = NULL;
size_t linelen = 0;
@@ -106,7 +106,7 @@ unsigned long read_sysfs(int warn, char *fmt, ...)
unsigned long read_free(unsigned long ps)
{
- return read_sysfs(ps != getpagesize(),
+ return thuge_read_sysfs(ps != getpagesize(),
"/sys/kernel/mm/hugepages/hugepages-%lukB/free_hugepages",
ps >> 10);
}
@@ -195,7 +195,7 @@ void find_pagesizes(void)
}
globfree(&g);
- if (read_sysfs(0, "/proc/sys/kernel/shmmax") < NUM_PAGES * largest)
+ if (thuge_read_sysfs(0, "/proc/sys/kernel/shmmax") < NUM_PAGES * largest)
ksft_exit_fail_msg("Please do echo %lu > /proc/sys/kernel/shmmax",
largest * NUM_PAGES);
diff --git a/tools/testing/selftests/mm/virtual_address_range.c b/tools/testing/selftests/mm/virtual_address_range.c
index b380e102b22f..169dbd692bf5 100644
--- a/tools/testing/selftests/mm/virtual_address_range.c
+++ b/tools/testing/selftests/mm/virtual_address_range.c
@@ -77,8 +77,11 @@ static void validate_addr(char *ptr, int high_addr)
{
unsigned long addr = (unsigned long) ptr;
- if (high_addr && addr < HIGH_ADDR_MARK)
- ksft_exit_fail_msg("Bad address %lx\n", addr);
+ if (high_addr) {
+ if (addr < HIGH_ADDR_MARK)
+ ksft_exit_fail_msg("Bad address %lx\n", addr);
+ return;
+ }
if (addr > HIGH_ADDR_MARK)
ksft_exit_fail_msg("Bad address %lx\n", addr);
diff --git a/tools/testing/selftests/mm/vm_util.c b/tools/testing/selftests/mm/vm_util.c
index 61d7bf1f8c62..5492e3f784df 100644
--- a/tools/testing/selftests/mm/vm_util.c
+++ b/tools/testing/selftests/mm/vm_util.c
@@ -486,3 +486,41 @@ int close_procmap(struct procmap_fd *procmap)
{
return close(procmap->fd);
}
+
+int write_sysfs(const char *file_path, unsigned long val)
+{
+ FILE *f = fopen(file_path, "w");
+
+ if (!f) {
+ fprintf(stderr, "f %s\n", file_path);
+ perror("fopen");
+ return 1;
+ }
+ if (fprintf(f, "%lu", val) < 0) {
+ perror("fprintf");
+ fclose(f);
+ return 1;
+ }
+ fclose(f);
+
+ return 0;
+}
+
+int read_sysfs(const char *file_path, unsigned long *val)
+{
+ FILE *f = fopen(file_path, "r");
+
+ if (!f) {
+ fprintf(stderr, "f %s\n", file_path);
+ perror("fopen");
+ return 1;
+ }
+ if (fscanf(f, "%lu", val) != 1) {
+ perror("fscanf");
+ fclose(f);
+ return 1;
+ }
+ fclose(f);
+
+ return 0;
+}
diff --git a/tools/testing/selftests/mm/vm_util.h b/tools/testing/selftests/mm/vm_util.h
index adb5d294a220..b8136d12a0f8 100644
--- a/tools/testing/selftests/mm/vm_util.h
+++ b/tools/testing/selftests/mm/vm_util.h
@@ -88,6 +88,8 @@ int open_procmap(pid_t pid, struct procmap_fd *procmap_out);
int query_procmap(struct procmap_fd *procmap);
bool find_vma_procmap(struct procmap_fd *procmap, void *address);
int close_procmap(struct procmap_fd *procmap);
+int write_sysfs(const char *file_path, unsigned long val);
+int read_sysfs(const char *file_path, unsigned long *val);
static inline int open_self_procmap(struct procmap_fd *procmap_out)
{
generated by cgit (git 2.34.1) at 2025-07-30 12:24:08 +0000