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Howlett" , Nico Pache , Ryan Roberts , Dev Jain , Barry Song , Lance Yang , Usama Arif , Vlastimil Babka , Mike Rapoport , Suren Baghdasaryan , Michal Hocko , Shuah Khan , Kevin Brodsky Cc: linux-mm@kvack.org, linux-kselftest@vger.kernel.org, linux-kernel@vger.kernel.org, Sarthak Sharma , Yeoreum Yun X-Mailer: b4 0.13.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=7460; i=yeoreum.yun@arm.com; h=from:subject:message-id; bh=qoSGrwNQRKGNb/DAYUjsOgnGJWv8gpOg0lOua4ceY5Q=; b=owEB7QES/pANAwAKAW3Vw9FaxTEzAcsmYgBqvs4KEEnqiON+I3Gd3mz6SPdJmpeKMqoQZSCSr VpJh7nj9qGJAbMEAAEKAB0WIQQtg+CS3QUzuFh1pJ1t1cPRWsUxMwUCar7OCgAKCRBt1cPRWsUx M0DRDADOZW52MN1wbgEqIJKQc0Q+UqYUnv1ItUiJbFIbrHUS9z/Jnl0g4Caa1agRolvBsut/+Ik i5Bi82AcUuUaP4632u8/HU2vqkfhNwDLfMSdcoN17SkngFlv1QRZoaOrGadXEsVgSve0zH+p0su nrxWlkJOgl2oHKN481Nk24L2YKE7l2mkKkFUcxFG3P0KOG52DJRpitaVN90n9X4Q0qkQc+mljZm QACLrFEdSqdxmoPSEXZqJS6zY/9Zeex9BU/xcyKFUEPP/5k2v/NQs5KpJn1ggYwJAA1eQcYzdGq /Ad0h5By83rNRWuY/v5zCsvojGdgWL40ralvP1/vPZsBY5YicON3GjH5aqsHMYXnDS0BG5StcgR i+nG7waFmYWgBdJDGJJFFVPGxxOYKkDlFB4+z+0qmJI1JHGNhCf94LrnAtmJ6vhXwc1ldu5KeU0 i3VrI6afLDZvEbLRXIOhpbuMSOxWGQXQhhV0OOcGcv9uCjqRPTMUYa2j3r+BbtqB6tZM4= X-Developer-Key: i=yeoreum.yun@arm.com; a=openpgp; fpr=2D83E092DD0533B85875A49D6DD5C3D15AC53133 X-Rspam-User: X-Stat-Signature: 165p5xxe8go5rmo86gfkj53swqwmugyd X-Rspamd-Server: rspam11 X-Rspamd-Queue-Id: 82040C0002 X-HE-Tag: 1790889500-608770 X-HE-Meta: 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 bWrDdeb3 f8C3Ac9MSlfGjkGjYytKBryvdcmPMTWUtiJp3MLjZrfLIuUBmcVhKj6/bY3OX4E4j0hQmAIA1OJ+H8avSl/rdFlnsROFx5tosPfHt42WcmeDQ9gc4aYivlAriv44NyjfOtu7TWbn3K+Mw8pbtlPFiglkoE3sAVAPDC0kuoVzc2ZKOXqKYYeeQaei3B5LJfaEvLuKj1K5hcWNy6PF5Zef43XuD/Ra6lw+gApmb6frzlmlrzyVUbuzc7ncuVYXX4TAUNESeN6tjRJTPtMTMOVdWUPjUWyf6fWRzf0oI/AmTm7tAcg8PjTlf5+rAsBlunHH7TzrSGSYRQyEnZqSCZi7ErEGwrYMIc5U+aRImYsq8/DX2PRlH/sCmD8MUDnPbYPmMKMbYWpWKkXQjq+Y= Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: check_huge_shmem() was required to distinguish shmem huge pages because /proc/self/smaps reports them using a dedicated “ShmemPmdMapped” entry, as opposed to “FilePmdMapped” for file-backed huge pages. Now that /proc/self/smaps is no longer used to detect huge pages and /proc/kpageflags is used instead, it is sufficient to distinguish between file-backed and anonymous pages since the ShmemPmdMapped is also kind of file-backed. Therefore, remove check_huge_shmem() and use check_huge_file() instead and cleanup khugepaged's check_huge operation in mem_ops. Suggested-by: David Hildenbrand (Arm) Reviewed-by: Baolin Wang Reviewed-by: Sarthak Sharma Acked-by: Zi Yan Acked-by: Lorenzo Stoakes (ARM) Acked-by: David Hildenbrand (Arm) Signed-off-by: Yeoreum Yun --- tools/testing/selftests/mm/folio_split_race_test.c | 2 +- tools/testing/selftests/mm/khugepaged.c | 38 ++++------------------ tools/testing/selftests/mm/uffd-common.c | 4 +-- tools/testing/selftests/mm/vm_util.c | 5 --- tools/testing/selftests/mm/vm_util.h | 1 - 5 files changed, 9 insertions(+), 41 deletions(-) diff --git a/tools/testing/selftests/mm/folio_split_race_test.c b/tools/testing/selftests/mm/folio_split_race_test.c index e4660bf89b62..1a9840b73e61 100644 --- a/tools/testing/selftests/mm/folio_split_race_test.c +++ b/tools/testing/selftests/mm/folio_split_race_test.c @@ -181,7 +181,7 @@ static uint64_t run_iteration(void) for (i = 0; i < TOTAL_PAGES; i++) fill_page(mmap_base, i); - if (!check_huge_shmem(mmap_base, FILE_SIZE, NR_PMD_PAGE, pmd_pagesize)) + if (!check_huge_file(mmap_base, FILE_SIZE, NR_PMD_PAGE, pmd_pagesize)) ksft_exit_fail_msg("No shmem THP is allocated\n"); if (pthread_barrier_init(&ctl.barrier, NULL, NUM_READER_THREADS + 1) != 0) diff --git a/tools/testing/selftests/mm/khugepaged.c b/tools/testing/selftests/mm/khugepaged.c index b0cb02bf1a73..61bd69d604d2 100644 --- a/tools/testing/selftests/mm/khugepaged.c +++ b/tools/testing/selftests/mm/khugepaged.c @@ -57,7 +57,7 @@ struct mem_ops { void *(*setup_area)(int nr_hpages); void (*cleanup_area)(void *p, unsigned long size); void (*fault)(void *p, unsigned long start, unsigned long end); - bool (*check_huge)(void *addr, size_t len, int nr_hpages, unsigned long hpage_size); + bool (*check_huge)(void *addr, size_t len, int nr_hpages, uint64_t hpage_size); const char *name; }; @@ -343,12 +343,6 @@ static void anon_fault(void *p, unsigned long start, unsigned long end) fill_memory(p, start, end); } -static bool anon_check_huge(void *addr, size_t len, int nr_hpages, - unsigned long hpage_size) -{ - return check_huge_anon(addr, len, nr_hpages, hpage_size); -} - static void *file_setup_area_common(int nr_hpages, enum file_setup_ops setup) { const int open_opt = setup == FILE_SETUP_READ_ONLY_FS ? O_RDONLY : O_RDWR; @@ -444,20 +438,6 @@ static void file_fault_write(void *p, unsigned long start, unsigned long end) ksft_exit_fail_perror("madvise(MADV_POPULATE_WRITE)"); } -static bool file_check_huge(void *addr, size_t len, int nr_hpages, - unsigned long hpage_size) -{ - switch (finfo.type) { - case VMA_FILE: - return check_huge_file(addr, len, nr_hpages, hpage_size); - case VMA_SHMEM: - return check_huge_shmem(addr, len, nr_hpages, hpage_size); - default: - ksft_exit_fail_msg("Unknown VMA type\n"); - return false; - } -} - static void *shmem_setup_area(int nr_hpages) { void *p; @@ -481,17 +461,11 @@ static void shmem_cleanup_area(void *p, unsigned long size) close(finfo.fd); } -static bool shmem_check_huge(void *addr, size_t len, int nr_hpages, - unsigned long hpage_size) -{ - return check_huge_shmem(addr, len, nr_hpages, hpage_size); -} - static struct mem_ops __anon_ops = { .setup_area = &anon_setup_area, .cleanup_area = &anon_cleanup_area, .fault = &anon_fault, - .check_huge = &anon_check_huge, + .check_huge = &check_huge_anon, .name = "anon", }; @@ -499,7 +473,7 @@ static struct mem_ops __read_only_file_ops = { .setup_area = &file_setup_read_only_area, .cleanup_area = &file_cleanup_area, .fault = &file_fault_read, - .check_huge = &file_check_huge, + .check_huge = &check_huge_file, .name = "file", }; @@ -507,7 +481,7 @@ static struct mem_ops __read_write_file_read_ops = { .setup_area = &file_setup_read_write_fs_read_area, .cleanup_area = &file_cleanup_area, .fault = &file_fault_read_and_flush, - .check_huge = &file_check_huge, + .check_huge = &check_huge_file, .name = "file", }; @@ -515,7 +489,7 @@ static struct mem_ops __read_write_file_write_ops = { .setup_area = &file_setup_read_write_fs_write_area, .cleanup_area = &file_cleanup_area, .fault = &file_fault_write, - .check_huge = &file_check_huge, + .check_huge = &check_huge_file, .name = "file", }; @@ -523,7 +497,7 @@ static struct mem_ops __shmem_ops = { .setup_area = &shmem_setup_area, .cleanup_area = &shmem_cleanup_area, .fault = &anon_fault, - .check_huge = &shmem_check_huge, + .check_huge = &check_huge_file, .name = "shmem", }; diff --git a/tools/testing/selftests/mm/uffd-common.c b/tools/testing/selftests/mm/uffd-common.c index 1fb967ef4985..a76851aced4d 100644 --- a/tools/testing/selftests/mm/uffd-common.c +++ b/tools/testing/selftests/mm/uffd-common.c @@ -196,8 +196,8 @@ static void shmem_check_pmd_mapping(uffd_global_test_opts_t *gopts, void *p, int { size_t len = expect_nr_hpages * read_pmd_pagesize(); - if (!check_huge_shmem(gopts->area_dst_alias, len, expect_nr_hpages, - read_pmd_pagesize())) + if (!check_huge_file(gopts->area_dst_alias, len, expect_nr_hpages, + read_pmd_pagesize())) err("Did not find expected %d number of hugepages", expect_nr_hpages); } diff --git a/tools/testing/selftests/mm/vm_util.c b/tools/testing/selftests/mm/vm_util.c index 65c06e17c326..515031b8283d 100644 --- a/tools/testing/selftests/mm/vm_util.c +++ b/tools/testing/selftests/mm/vm_util.c @@ -486,11 +486,6 @@ bool check_huge_file(void *addr, size_t len, int nr_hpages, uint64_t hpage_size) return __check_type(addr, len, scan_mapping_size, CHECK_TYPE_FILE); } -bool check_huge_shmem(void *addr, size_t len, int nr_hpages, uint64_t hpage_size) -{ - return check_huge_file(addr, len, nr_hpages, hpage_size); -} - int64_t allocate_transhuge(void *ptr, int pagemap_fd) { uint64_t ent[2]; diff --git a/tools/testing/selftests/mm/vm_util.h b/tools/testing/selftests/mm/vm_util.h index 072a6c756c51..b5d59729d432 100644 --- a/tools/testing/selftests/mm/vm_util.h +++ b/tools/testing/selftests/mm/vm_util.h @@ -96,7 +96,6 @@ uint64_t read_pmd_pagesize(void); unsigned long rss_anon(void); bool check_huge_anon(void *addr, size_t len, int nr_hpages, uint64_t hpage_size); bool check_huge_file(void *addr, size_t len, int nr_hpages, uint64_t hpage_size); -bool check_huge_shmem(void *addr, size_t len, int nr_hpages, uint64_t hpage_size); int64_t allocate_transhuge(void *ptr, int pagemap_fd); int pageflags_get(unsigned long pfn, int kpageflags_fd, uint64_t *flags); int gather_folio_orders(char *vaddr_start, size_t len, -- 2.43.0