From: Zi Yan <z...@nvidia.com> Bit 27 is used to identify 1GB THP.
Signed-off-by: Zi Yan <z...@nvidia.com> --- fs/proc/page.c | 2 ++ include/uapi/linux/kernel-page-flags.h | 2 ++ 2 files changed, 4 insertions(+) diff --git a/fs/proc/page.c b/fs/proc/page.c index 40b05e0d4274..5d1471a6082a 100644 --- a/fs/proc/page.c +++ b/fs/proc/page.c @@ -138,6 +138,8 @@ u64 stable_page_flags(struct page *page) u |= 1 << KPF_ZERO_PAGE; u |= 1 << KPF_THP; } + if (compound_order(head) == HPAGE_PUD_ORDER) + u |= 1 << KPF_PUD_THP; } else if (is_zero_pfn(page_to_pfn(page))) u |= 1 << KPF_ZERO_PAGE; diff --git a/include/uapi/linux/kernel-page-flags.h b/include/uapi/linux/kernel-page-flags.h index 21b9113c69da..743bd730917d 100644 --- a/include/uapi/linux/kernel-page-flags.h +++ b/include/uapi/linux/kernel-page-flags.h @@ -36,5 +36,7 @@ #define KPF_ZERO_PAGE 24 #define KPF_IDLE 25 #define KPF_PGTABLE 26 +#define KPF_PUD_THP 27 + #endif /* _UAPILINUX_KERNEL_PAGE_FLAGS_H */ -- 2.20.1