mm: introduce idle page tracking

[deliverable/linux.git] / include / linux / page-flags.h

diff --git a/include/linux/page-flags.h b/include/linux/page-flags.h
index 41c93844fb1d1ed5c0dbad77fe5a409557d66067..416509e26d6d16bfa0f75ef793b7e32e6b5fb090 100644 (file)
--- a/include/linux/page-flags.h
+++ b/include/linux/page-flags.h
@@ -108,6 +108,10 @@ enum pageflags {
 #endif
 #ifdef CONFIG_TRANSPARENT_HUGEPAGE
        PG_compound_lock,
+#endif
+#if defined(CONFIG_IDLE_PAGE_TRACKING) && defined(CONFIG_64BIT)
+       PG_young,
+       PG_idle,
 #endif
        __NR_PAGEFLAGS,
 
@@ -289,6 +293,13 @@ PAGEFLAG_FALSE(HWPoison)
 #define __PG_HWPOISON 0
 #endif
 
+#if defined(CONFIG_IDLE_PAGE_TRACKING) && defined(CONFIG_64BIT)
+TESTPAGEFLAG(Young, young)
+SETPAGEFLAG(Young, young)
+TESTCLEARFLAG(Young, young)
+PAGEFLAG(Idle, idle)
+#endif
+
 /*
  * On an anonymous page mapped into a user virtual memory area,
  * page->mapping points to its anon_vma, not to a struct address_space;