Now the young and skip_kasan_poison flag are supported in
show_page_flags(), but we can not get them from /proc/kpageflags,
So there add them.
Signed-off-by: Xin Hao <xhao@xxxxxxxxxxxxxxxxx>
---
fs/proc/page.c | 6 ++++++
include/linux/kernel-page-flags.h | 2 ++
tools/vm/page-types.c | 4 ++++
3 files changed, 12 insertions(+)
diff --git a/fs/proc/page.c b/fs/proc/page.c
index 9f1077d94cde..fd28e1d92c5c 100644
--- a/fs/proc/page.c
+++ b/fs/proc/page.c
@@ -220,6 +220,12 @@ u64 stable_page_flags(struct page *page)
#ifdef CONFIG_64BIT
u |= kpf_copy_bit(k, KPF_ARCH_2, PG_arch_2);
#endif
+#if defined(CONFIG_PAGE_IDLE_FLAG) && defined(CONFIG_64BIT)
+ u |= kpf_copy_bit(k, KPF_YOUNG, PG_young);
+#endif
+#ifdef CONFIG_KASAN_HW_TAGS
+ u |= kpf_copy_bit(k, KPF_SKIP_KASAN_POSION, PG_skip_kasan_poison);
+#endif
return u;
};
diff --git a/include/linux/kernel-page-flags.h b/include/linux/kernel-page-flags.h
index eee1877a354e..30aaa0ee4ca9 100644
--- a/include/linux/kernel-page-flags.h
+++ b/include/linux/kernel-page-flags.h
@@ -18,5 +18,7 @@
#define KPF_UNCACHED 39
#define KPF_SOFTDIRTY 40
#define KPF_ARCH_2 41
+#define KPF_YOUNG 42
+#define KPF_SKIP_KASAN_POSION 43
#endif /* LINUX_KERNEL_PAGE_FLAGS_H */
diff --git a/tools/vm/page-types.c b/tools/vm/page-types.c
index b1ed76d9a979..2671b746d11f 100644
--- a/tools/vm/page-types.c
+++ b/tools/vm/page-types.c
@@ -79,6 +79,8 @@
#define KPF_UNCACHED 39
#define KPF_SOFTDIRTY 40
#define KPF_ARCH_2 41
+#define KPF_YOUNG 42
+#define KPF_SKIP_KASAN_POSION 43
/* [48-] take some arbitrary free slots for expanding overloaded flags
* not part of kernel API
@@ -137,6 +139,8 @@ static const char * const page_flag_names[] = {
[KPF_UNCACHED] = "c:uncached",
[KPF_SOFTDIRTY] = "f:softdirty",
[KPF_ARCH_2] = "H:arch_2",
+ [KPF_YOUNG] = "y:young",
+ [KPF_SKIP_KASAN_POSION] = "K:skip_kasan_posion",
[KPF_READAHEAD] = "I:readahead",
[KPF_SLOB_FREE] = "P:slob_free",
--
2.31.0
