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| author | Peter Xu <peterx@redhat.com> | 2023-04-12 19:42:23 +0300 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2023-04-19 02:30:03 +0300 |
| commit | bd4d67e76f699688d15e6194f1505b8bdfee0dd7 (patch) | |
| tree | d117181cab8200dd1f030694085cdaea3a2519d9 /tools/testing/selftests/mm/vm_util.c | |
| parent | 4b54f5a758b7ac521d4658cb0d18b132b87597c0 (diff) | |
| download | linux-bd4d67e76f699688d15e6194f1505b8bdfee0dd7.tar.xz | |
selftests/mm: merge default_huge_page_size() into one
There're already 3 same definitions of the three functions. Move it into
vm_util.[ch].
Link: https://lkml.kernel.org/r/20230412164223.328134-1-peterx@redhat.com
Signed-off-by: Peter Xu <peterx@redhat.com>
Reviewed-by: Axel Rasmussen <axelrasmussen@google.com>
Reviewed-by: Mike Kravetz <mike.kravetz@oracle.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Mike Rapoport (IBM) <rppt@kernel.org>
Cc: Dmitry Safonov <0x7f454c46@gmail.com>
Cc: Zach O'Keefe <zokeefe@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'tools/testing/selftests/mm/vm_util.c')
| -rw-r--r-- | tools/testing/selftests/mm/vm_util.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/tools/testing/selftests/mm/vm_util.c b/tools/testing/selftests/mm/vm_util.c index 85411ee7ff8b..7ffad87aa7e8 100644 --- a/tools/testing/selftests/mm/vm_util.c +++ b/tools/testing/selftests/mm/vm_util.c @@ -180,3 +180,24 @@ int64_t allocate_transhuge(void *ptr, int pagemap_fd) return -1; } + +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; +} |