This patch introduces 'kernelpagesize_kB' line element to /proc/<pid>/numa_maps report file in order to help identifying the size of pages that are backing memory areas mapped by a given task. This is specially useful to help differentiating between HUGE and GIGANTIC page backed VMAs. This patch is based on Dave Hansen's proposal and reviewer's follow-ups taken from the following dicussion threads: * https://lkml.org/lkml/2011/9/21/454 * https://lkml.org/lkml/2014/12/20/66 Signed-off-by: Rafael Aquini <aquini@xxxxxxxxxx> --- * v2 changelog: . print kernel page size unconditionally (jweiner, dhansen) . rename pagesize to match smaps terminology (dhansen, drientjes) fs/proc/task_mmu.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/fs/proc/task_mmu.c b/fs/proc/task_mmu.c index 246eae8..3688d64 100644 --- a/fs/proc/task_mmu.c +++ b/fs/proc/task_mmu.c @@ -1533,6 +1533,8 @@ static int show_numa_map(struct seq_file *m, void *v, int is_pid) if (!md->pages) goto out; + seq_printf(m, " kernelpagesize_kB=%lu", vma_kernel_pagesize(vma) >> 10); + if (md->anon) seq_printf(m, " anon=%lu", md->anon); -- 1.9.3 -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>