The function already has 2 uses and will have a 3rd one
in prctl selftests. The pagesize argument is added into
the function, as it's not a global variable anymore.
No functional change intended with this patch.
Suggested-by: David Hildenbrand <david@redhat.com>
Signed-off-by: Usama Arif <usamaarif642@gmail.com>
Reviewed-by: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Reviewed-by: Zi Yan <ziy@nvidia.com>
---
tools/testing/selftests/mm/cow.c | 12 ++++--------
tools/testing/selftests/mm/uffd-wp-mremap.c | 9 ++-------
tools/testing/selftests/mm/vm_util.h | 5 +++++
3 files changed, 11 insertions(+), 15 deletions(-)
diff --git a/tools/testing/selftests/mm/cow.c b/tools/testing/selftests/mm/cow.c
index 90ee5779662f3..a568fe629b094 100644
--- a/tools/testing/selftests/mm/cow.c
+++ b/tools/testing/selftests/mm/cow.c
@@ -41,10 +41,6 @@ static size_t hugetlbsizes[10];
static int gup_fd;
static bool has_huge_zeropage;
-static int sz2ord(size_t size)
-{
- return __builtin_ctzll(size / pagesize);
-}
static int detect_thp_sizes(size_t sizes[], int max)
{
@@ -57,7 +53,7 @@ static int detect_thp_sizes(size_t sizes[], int max)
if (!pmdsize)
return 0;
- orders = 1UL << sz2ord(pmdsize);
+ orders = 1UL << sz2ord(pmdsize, pagesize);
orders |= thp_supported_orders();
for (i = 0; orders && count < max; i++) {
@@ -1216,8 +1212,8 @@ static void run_anon_test_case(struct test_case const *test_case)
size_t size = thpsizes[i];
struct thp_settings settings = *thp_current_settings();
- settings.hugepages[sz2ord(pmdsize)].enabled = THP_NEVER;
- settings.hugepages[sz2ord(size)].enabled = THP_ALWAYS;
+ settings.hugepages[sz2ord(pmdsize, pagesize)].enabled = THP_NEVER;
+ settings.hugepages[sz2ord(size, pagesize)].enabled = THP_ALWAYS;
thp_push_settings(&settings);
if (size == pmdsize) {
@@ -1868,7 +1864,7 @@ int main(void)
if (pmdsize) {
/* Only if THP is supported. */
thp_read_settings(&default_settings);
- default_settings.hugepages[sz2ord(pmdsize)].enabled = THP_INHERIT;
+ default_settings.hugepages[sz2ord(pmdsize, pagesize)].enabled = THP_INHERIT;
thp_save_settings();
thp_push_settings(&default_settings);
diff --git a/tools/testing/selftests/mm/uffd-wp-mremap.c b/tools/testing/selftests/mm/uffd-wp-mremap.c
index 13ceb56289701..b2b6116e65808 100644
--- a/tools/testing/selftests/mm/uffd-wp-mremap.c
+++ b/tools/testing/selftests/mm/uffd-wp-mremap.c
@@ -19,11 +19,6 @@ static size_t thpsizes[20];
static int nr_hugetlbsizes;
static size_t hugetlbsizes[10];
-static int sz2ord(size_t size)
-{
- return __builtin_ctzll(size / pagesize);
-}
-
static int detect_thp_sizes(size_t sizes[], int max)
{
int count = 0;
@@ -87,9 +82,9 @@ static void *alloc_one_folio(size_t size, bool private, bool hugetlb)
struct thp_settings settings = *thp_current_settings();
if (private)
- settings.hugepages[sz2ord(size)].enabled = THP_ALWAYS;
+ settings.hugepages[sz2ord(size, pagesize)].enabled = THP_ALWAYS;
else
- settings.shmem_hugepages[sz2ord(size)].enabled = SHMEM_ALWAYS;
+ settings.shmem_hugepages[sz2ord(size, pagesize)].enabled = SHMEM_ALWAYS;
thp_push_settings(&settings);
diff --git a/tools/testing/selftests/mm/vm_util.h b/tools/testing/selftests/mm/vm_util.h
index 148b792cff0fc..e5cb72bf3a2ab 100644
--- a/tools/testing/selftests/mm/vm_util.h
+++ b/tools/testing/selftests/mm/vm_util.h
@@ -135,6 +135,11 @@ static inline void log_test_result(int result)
ksft_test_result_report(result, "%s\n", test_name);
}
+static inline int sz2ord(size_t size, size_t pagesize)
+{
+ return __builtin_ctzll(size / pagesize);
+}
+
void *sys_mremap(void *old_address, unsigned long old_size,
unsigned long new_size, int flags, void *new_address);
--
2.47.3On Fri, 15 Aug 2025 14:54:57 +0100 Usama Arif <usamaarif642@gmail.com> wrote:
> The function already has 2 uses and will have a 3rd one
> in prctl selftests. The pagesize argument is added into
> the function, as it's not a global variable anymore.
> No functional change intended with this patch.
>
https://lkml.kernel.org/r/20250816040113.760010-5-aboorvad@linux.ibm.com
jut did this, but didn't add the extra arg.
tools/testing/selftests/mm/split_huge_page_test.c needed updating.
--- a/tools/testing/selftests/mm/cow.c~selftest-mm-extract-sz2ord-function-into-vm_utilh
+++ a/tools/testing/selftests/mm/cow.c
@@ -52,7 +52,7 @@ static int detect_thp_sizes(size_t sizes
if (!pmdsize)
return 0;
- orders = 1UL << sz2ord(pmdsize);
+ orders = 1UL << sz2ord(pmdsize, pagesize);
orders |= thp_supported_orders();
for (i = 0; orders && count < max; i++) {
@@ -1211,8 +1211,8 @@ static void run_anon_test_case(struct te
size_t size = thpsizes[i];
struct thp_settings settings = *thp_current_settings();
- settings.hugepages[sz2ord(pmdsize)].enabled = THP_NEVER;
- settings.hugepages[sz2ord(size)].enabled = THP_ALWAYS;
+ settings.hugepages[sz2ord(pmdsize, pagesize)].enabled = THP_NEVER;
+ settings.hugepages[sz2ord(size, pagesize)].enabled = THP_ALWAYS;
thp_push_settings(&settings);
if (size == pmdsize) {
@@ -1863,7 +1863,7 @@ int main(void)
if (pmdsize) {
/* Only if THP is supported. */
thp_read_settings(&default_settings);
- default_settings.hugepages[sz2ord(pmdsize)].enabled = THP_INHERIT;
+ default_settings.hugepages[sz2ord(pmdsize, pagesize)].enabled = THP_INHERIT;
thp_save_settings();
thp_push_settings(&default_settings);
--- a/tools/testing/selftests/mm/uffd-wp-mremap.c~selftest-mm-extract-sz2ord-function-into-vm_utilh
+++ a/tools/testing/selftests/mm/uffd-wp-mremap.c
@@ -82,9 +82,9 @@ static void *alloc_one_folio(size_t size
struct thp_settings settings = *thp_current_settings();
if (private)
- settings.hugepages[sz2ord(size)].enabled = THP_ALWAYS;
+ settings.hugepages[sz2ord(size, pagesize)].enabled = THP_ALWAYS;
else
- settings.shmem_hugepages[sz2ord(size)].enabled = SHMEM_ALWAYS;
+ settings.shmem_hugepages[sz2ord(size, pagesize)].enabled = SHMEM_ALWAYS;
thp_push_settings(&settings);
--- a/tools/testing/selftests/mm/vm_util.h~selftest-mm-extract-sz2ord-function-into-vm_utilh
+++ a/tools/testing/selftests/mm/vm_util.h
@@ -127,9 +127,9 @@ static inline void log_test_result(int r
ksft_test_result_report(result, "%s\n", test_name);
}
-static inline int sz2ord(size_t size)
+static inline int sz2ord(size_t size, size_t pagesize)
{
- return __builtin_ctzll(size / getpagesize());
+ return __builtin_ctzll(size / pagesize);
}
void *sys_mremap(void *old_address, unsigned long old_size,
--- a/tools/testing/selftests/mm/split_huge_page_test.c~selftest-mm-extract-sz2ord-function-into-vm_utilh
+++ a/tools/testing/selftests/mm/split_huge_page_test.c
@@ -544,7 +544,7 @@ int main(int argc, char **argv)
ksft_exit_fail_msg("Reading PMD pagesize failed\n");
nr_pages = pmd_pagesize / pagesize;
- max_order = sz2ord(pmd_pagesize);
+ max_order = sz2ord(pmd_pagesize, pagesize);
tests = 2 + (max_order - 1) + (2 * max_order) + (max_order - 1) * 4 + 2;
ksft_set_plan(tests);
_
On 16.08.25 08:15, Andrew Morton wrote:
> On Fri, 15 Aug 2025 14:54:57 +0100 Usama Arif <usamaarif642@gmail.com> wrote:
>
>> The function already has 2 uses and will have a 3rd one
>> in prctl selftests. The pagesize argument is added into
>> the function, as it's not a global variable anymore.
>> No functional change intended with this patch.
>>
>
> https://lkml.kernel.org/r/20250816040113.760010-5-aboorvad@linux.ibm.com
> jut did this, but didn't add the extra arg.
> tools/testing/selftests/mm/split_huge_page_test.c needed updating.
>
> --- a/tools/testing/selftests/mm/cow.c~selftest-mm-extract-sz2ord-function-into-vm_utilh
> +++ a/tools/testing/selftests/mm/cow.c
> @@ -52,7 +52,7 @@ static int detect_thp_sizes(size_t sizes
> if (!pmdsize)
> return 0;
>
> - orders = 1UL << sz2ord(pmdsize);
> + orders = 1UL << sz2ord(pmdsize, pagesize);
> orders |= thp_supported_orders();
>
> for (i = 0; orders && count < max; i++) {
> @@ -1211,8 +1211,8 @@ static void run_anon_test_case(struct te
> size_t size = thpsizes[i];
> struct thp_settings settings = *thp_current_settings();
>
> - settings.hugepages[sz2ord(pmdsize)].enabled = THP_NEVER;
> - settings.hugepages[sz2ord(size)].enabled = THP_ALWAYS;
> + settings.hugepages[sz2ord(pmdsize, pagesize)].enabled = THP_NEVER;
> + settings.hugepages[sz2ord(size, pagesize)].enabled = THP_ALWAYS;
> thp_push_settings(&settings);
>
> if (size == pmdsize) {
> @@ -1863,7 +1863,7 @@ int main(void)
> if (pmdsize) {
> /* Only if THP is supported. */
> thp_read_settings(&default_settings);
> - default_settings.hugepages[sz2ord(pmdsize)].enabled = THP_INHERIT;
> + default_settings.hugepages[sz2ord(pmdsize, pagesize)].enabled = THP_INHERIT;
> thp_save_settings();
> thp_push_settings(&default_settings);
>
> --- a/tools/testing/selftests/mm/uffd-wp-mremap.c~selftest-mm-extract-sz2ord-function-into-vm_utilh
> +++ a/tools/testing/selftests/mm/uffd-wp-mremap.c
> @@ -82,9 +82,9 @@ static void *alloc_one_folio(size_t size
> struct thp_settings settings = *thp_current_settings();
>
> if (private)
> - settings.hugepages[sz2ord(size)].enabled = THP_ALWAYS;
> + settings.hugepages[sz2ord(size, pagesize)].enabled = THP_ALWAYS;
> else
> - settings.shmem_hugepages[sz2ord(size)].enabled = SHMEM_ALWAYS;
> + settings.shmem_hugepages[sz2ord(size, pagesize)].enabled = SHMEM_ALWAYS;
>
> thp_push_settings(&settings);
>
> --- a/tools/testing/selftests/mm/vm_util.h~selftest-mm-extract-sz2ord-function-into-vm_utilh
> +++ a/tools/testing/selftests/mm/vm_util.h
> @@ -127,9 +127,9 @@ static inline void log_test_result(int r
> ksft_test_result_report(result, "%s\n", test_name);
> }
>
> -static inline int sz2ord(size_t size)
> +static inline int sz2ord(size_t size, size_t pagesize)
> {
> - return __builtin_ctzll(size / getpagesize());
> + return __builtin_ctzll(size / pagesize);
> }
>
> void *sys_mremap(void *old_address, unsigned long old_size,
> --- a/tools/testing/selftests/mm/split_huge_page_test.c~selftest-mm-extract-sz2ord-function-into-vm_utilh
> +++ a/tools/testing/selftests/mm/split_huge_page_test.c
> @@ -544,7 +544,7 @@ int main(int argc, char **argv)
> ksft_exit_fail_msg("Reading PMD pagesize failed\n");
>
> nr_pages = pmd_pagesize / pagesize;
> - max_order = sz2ord(pmd_pagesize);
> + max_order = sz2ord(pmd_pagesize, pagesize);
> tests = 2 + (max_order - 1) + (2 * max_order) + (max_order - 1) * 4 + 2;
> ksft_set_plan(tests);
>
> _
>
LGTM.
--
Cheers
David / dhildenb
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