Hi Steve,

On Wed, 25 Mar 2020 2:45, Steve wrote:

On Tue, 24 Mar 2020 21:45:32 +0800
Zhenyu Ye [off-list ref] wrote:

quoted

--- a/include/trace/events/mmflags.h
+++ b/include/trace/events/mmflags.h

@@ -130,6 +130,16 @@ IF_HAVE_PG_IDLE(PG_idle,		"idle"		)
 #define IF_HAVE_VM_SOFTDIRTY(flag,name)
 #endif

+#ifdef CONFIG_64BIT
+#define IF_HAVE_VM_LEVEL_PUD(flag,name)	{flag, name}
+#define IF_HAVE_VM_LEVEL_PMD(flag,name)	{flag, name}
+#define IF_HAVE_VM_LEVEL_PTE(flag,name)	{flag, name}
+#else
+#define IF_HAVE_VM_LEVEL_PUD(flag,name)
+#define IF_HAVE_VM_LEVEL_PMD(flag,name)
+#define IF_HAVE_VM_LEVEL_PTE(flag,name)
+#endif
+
 #define __def_vmaflag_names						\
 	{VM_READ,			"read"		},		\
 	{VM_WRITE,			"write"		},		\

@@ -161,7 +171,10 @@ IF_HAVE_VM_SOFTDIRTY(VM_SOFTDIRTY,

	"softdirty"	)		\

quoted

 	{VM_MIXEDMAP,			"mixedmap"	},		\
 	{VM_HUGEPAGE,			"hugepage"	},		\
 	{VM_NOHUGEPAGE,			"nohugepage"	},		\
-	{VM_MERGEABLE,			"mergeable"	}		\
+	{VM_MERGEABLE,			"mergeable"	},		\
+IF_HAVE_VM_LEVEL_PUD(VM_LEVEL_PUD,	"pud-level"	),		\
+IF_HAVE_VM_LEVEL_PMD(VM_LEVEL_PMD,	"pmd-level"	),		\
+IF_HAVE_VM_LEVEL_PTE(VM_LEVEL_PTE,	"pte-level"	)		\

Have you tested this on 32bit? It looks like you'll get empty commas there.
Perhaps the defines need to be:

#ifdef CONFIG_64BIT
#define IF_HAVE_VM_LEVEL_PUD(flag,name)	{flag, name},
#define IF_HAVE_VM_LEVEL_PMD(flag,name)	{flag, name},
#define IF_HAVE_VM_LEVEL_PTE(flag,name)	{flag, name}
#else
#define IF_HAVE_VM_LEVEL_PUD(flag,name)
#define IF_HAVE_VM_LEVEL_PMD(flag,name)
#define IF_HAVE_VM_LEVEL_PTE(flag,name)
#endif

And leave out the commas in the list.

-- Steve

Thanks for your review. I will fix this in next version, if I could still use vm_flags
at that time :).

Zhenyu

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