diff options
Diffstat (limited to 'tools/testing/selftests/mm/cow.c')
| -rw-r--r-- | tools/testing/selftests/mm/cow.c | 108 |
1 files changed, 72 insertions, 36 deletions
diff --git a/tools/testing/selftests/mm/cow.c b/tools/testing/selftests/mm/cow.c index 363bf5f801be..32c6ccc2a6be 100644 --- a/tools/testing/selftests/mm/cow.c +++ b/tools/testing/selftests/mm/cow.c @@ -199,7 +199,7 @@ static int child_vmsplice_memcmp_fn(char *mem, size_t size, typedef int (*child_fn)(char *mem, size_t size, struct comm_pipes *comm_pipes); static void do_test_cow_in_parent(char *mem, size_t size, bool do_mprotect, - child_fn fn) + child_fn fn, bool xfail) { struct comm_pipes comm_pipes; char buf; @@ -247,33 +247,47 @@ static void do_test_cow_in_parent(char *mem, size_t size, bool do_mprotect, else ret = -EINVAL; - ksft_test_result(!ret, "No leak from parent into child\n"); + if (!ret) { + ksft_test_result_pass("No leak from parent into child\n"); + } else if (xfail) { + /* + * With hugetlb, some vmsplice() tests are currently expected to + * fail because (a) harder to fix and (b) nobody really cares. + * Flag them as expected failure for now. + */ + ksft_test_result_xfail("Leak from parent into child\n"); + } else { + ksft_test_result_fail("Leak from parent into child\n"); + } close_comm_pipes: close_comm_pipes(&comm_pipes); } -static void test_cow_in_parent(char *mem, size_t size) +static void test_cow_in_parent(char *mem, size_t size, bool is_hugetlb) { - do_test_cow_in_parent(mem, size, false, child_memcmp_fn); + do_test_cow_in_parent(mem, size, false, child_memcmp_fn, false); } -static void test_cow_in_parent_mprotect(char *mem, size_t size) +static void test_cow_in_parent_mprotect(char *mem, size_t size, bool is_hugetlb) { - do_test_cow_in_parent(mem, size, true, child_memcmp_fn); + do_test_cow_in_parent(mem, size, true, child_memcmp_fn, false); } -static void test_vmsplice_in_child(char *mem, size_t size) +static void test_vmsplice_in_child(char *mem, size_t size, bool is_hugetlb) { - do_test_cow_in_parent(mem, size, false, child_vmsplice_memcmp_fn); + do_test_cow_in_parent(mem, size, false, child_vmsplice_memcmp_fn, + is_hugetlb); } -static void test_vmsplice_in_child_mprotect(char *mem, size_t size) +static void test_vmsplice_in_child_mprotect(char *mem, size_t size, + bool is_hugetlb) { - do_test_cow_in_parent(mem, size, true, child_vmsplice_memcmp_fn); + do_test_cow_in_parent(mem, size, true, child_vmsplice_memcmp_fn, + is_hugetlb); } static void do_test_vmsplice_in_parent(char *mem, size_t size, - bool before_fork) + bool before_fork, bool xfail) { struct iovec iov = { .iov_base = mem, @@ -355,8 +369,18 @@ static void do_test_vmsplice_in_parent(char *mem, size_t size, } } - ksft_test_result(!memcmp(old, new, transferred), - "No leak from child into parent\n"); + if (!memcmp(old, new, transferred)) { + ksft_test_result_pass("No leak from child into parent\n"); + } else if (xfail) { + /* + * With hugetlb, some vmsplice() tests are currently expected to + * fail because (a) harder to fix and (b) nobody really cares. + * Flag them as expected failure for now. + */ + ksft_test_result_xfail("Leak from child into parent\n"); + } else { + ksft_test_result_fail("Leak from child into parent\n"); + } close_pipe: close(fds[0]); close(fds[1]); @@ -367,14 +391,14 @@ free: free(new); } -static void test_vmsplice_before_fork(char *mem, size_t size) +static void test_vmsplice_before_fork(char *mem, size_t size, bool is_hugetlb) { - do_test_vmsplice_in_parent(mem, size, true); + do_test_vmsplice_in_parent(mem, size, true, is_hugetlb); } -static void test_vmsplice_after_fork(char *mem, size_t size) +static void test_vmsplice_after_fork(char *mem, size_t size, bool is_hugetlb) { - do_test_vmsplice_in_parent(mem, size, false); + do_test_vmsplice_in_parent(mem, size, false, is_hugetlb); } #ifdef LOCAL_CONFIG_HAVE_LIBURING @@ -529,12 +553,12 @@ close_comm_pipes: close_comm_pipes(&comm_pipes); } -static void test_iouring_ro(char *mem, size_t size) +static void test_iouring_ro(char *mem, size_t size, bool is_hugetlb) { do_test_iouring(mem, size, false); } -static void test_iouring_fork(char *mem, size_t size) +static void test_iouring_fork(char *mem, size_t size, bool is_hugetlb) { do_test_iouring(mem, size, true); } @@ -678,37 +702,41 @@ free_tmp: free(tmp); } -static void test_ro_pin_on_shared(char *mem, size_t size) +static void test_ro_pin_on_shared(char *mem, size_t size, bool is_hugetlb) { do_test_ro_pin(mem, size, RO_PIN_TEST_SHARED, false); } -static void test_ro_fast_pin_on_shared(char *mem, size_t size) +static void test_ro_fast_pin_on_shared(char *mem, size_t size, bool is_hugetlb) { do_test_ro_pin(mem, size, RO_PIN_TEST_SHARED, true); } -static void test_ro_pin_on_ro_previously_shared(char *mem, size_t size) +static void test_ro_pin_on_ro_previously_shared(char *mem, size_t size, + bool is_hugetlb) { do_test_ro_pin(mem, size, RO_PIN_TEST_PREVIOUSLY_SHARED, false); } -static void test_ro_fast_pin_on_ro_previously_shared(char *mem, size_t size) +static void test_ro_fast_pin_on_ro_previously_shared(char *mem, size_t size, + bool is_hugetlb) { do_test_ro_pin(mem, size, RO_PIN_TEST_PREVIOUSLY_SHARED, true); } -static void test_ro_pin_on_ro_exclusive(char *mem, size_t size) +static void test_ro_pin_on_ro_exclusive(char *mem, size_t size, + bool is_hugetlb) { do_test_ro_pin(mem, size, RO_PIN_TEST_RO_EXCLUSIVE, false); } -static void test_ro_fast_pin_on_ro_exclusive(char *mem, size_t size) +static void test_ro_fast_pin_on_ro_exclusive(char *mem, size_t size, + bool is_hugetlb) { do_test_ro_pin(mem, size, RO_PIN_TEST_RO_EXCLUSIVE, true); } -typedef void (*test_fn)(char *mem, size_t size); +typedef void (*test_fn)(char *mem, size_t size, bool hugetlb); static void do_run_with_base_page(test_fn fn, bool swapout) { @@ -740,7 +768,7 @@ static void do_run_with_base_page(test_fn fn, bool swapout) } } - fn(mem, pagesize); + fn(mem, pagesize, false); munmap: munmap(mem, pagesize); } @@ -904,7 +932,7 @@ static void do_run_with_thp(test_fn fn, enum thp_run thp_run, size_t thpsize) break; } - fn(mem, size); + fn(mem, size, false); munmap: munmap(mmap_mem, mmap_size); if (mremap_mem != MAP_FAILED) @@ -997,7 +1025,7 @@ static void run_with_hugetlb(test_fn fn, const char *desc, size_t hugetlbsize) } munmap(dummy, hugetlbsize); - fn(mem, hugetlbsize); + fn(mem, hugetlbsize, true); munmap: munmap(mem, hugetlbsize); } @@ -1036,7 +1064,7 @@ static const struct test_case anon_test_cases[] = { */ { "vmsplice() + unmap in child", - test_vmsplice_in_child + test_vmsplice_in_child, }, /* * vmsplice() test, but do an additional mprotect(PROT_READ)+ @@ -1044,7 +1072,7 @@ static const struct test_case anon_test_cases[] = { */ { "vmsplice() + unmap in child with mprotect() optimization", - test_vmsplice_in_child_mprotect + test_vmsplice_in_child_mprotect, }, /* * vmsplice() [R/O GUP] in parent before fork(), unmap in parent after @@ -1322,23 +1350,31 @@ close_comm_pipes: close_comm_pipes(&comm_pipes); } -static void test_anon_thp_collapse_unshared(char *mem, size_t size) +static void test_anon_thp_collapse_unshared(char *mem, size_t size, + bool is_hugetlb) { + assert(!is_hugetlb); do_test_anon_thp_collapse(mem, size, ANON_THP_COLLAPSE_UNSHARED); } -static void test_anon_thp_collapse_fully_shared(char *mem, size_t size) +static void test_anon_thp_collapse_fully_shared(char *mem, size_t size, + bool is_hugetlb) { + assert(!is_hugetlb); do_test_anon_thp_collapse(mem, size, ANON_THP_COLLAPSE_FULLY_SHARED); } -static void test_anon_thp_collapse_lower_shared(char *mem, size_t size) +static void test_anon_thp_collapse_lower_shared(char *mem, size_t size, + bool is_hugetlb) { + assert(!is_hugetlb); do_test_anon_thp_collapse(mem, size, ANON_THP_COLLAPSE_LOWER_SHARED); } -static void test_anon_thp_collapse_upper_shared(char *mem, size_t size) +static void test_anon_thp_collapse_upper_shared(char *mem, size_t size, + bool is_hugetlb) { + assert(!is_hugetlb); do_test_anon_thp_collapse(mem, size, ANON_THP_COLLAPSE_UPPER_SHARED); } @@ -1779,5 +1815,5 @@ int main(int argc, char **argv) if (err) ksft_exit_fail_msg("%d out of %d tests failed\n", err, ksft_test_num()); - return ksft_exit_pass(); + ksft_exit_pass(); } |