mm: ptdump: reduce level numbers by 1 in note_page()

Rather than having to increment the 'depth' number by 1 in ptdump_hole(), let's change the meaning of 'level' in note_page() since that makes the code simplier. Note that for x86, the level numbers were previously increased by 1 in commit 45dcd2091363 ("x86/mm/dump_pagetables: Fix printout of p4d level") and the comment "Bit 7 has a different meaning" was not updated, so this change also makes the code match the comment again.

Steven Price committed 6 years ago

Commit f8f0d0b1 parent 9c7869c4 files · +22 −20Browse files

Showing the changes to include/linux (1 of 4 files). Show all

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include/linux/ptdump.h+1−0

@@ -11,6 +11,7 @@ struct ptdump_range { · 10 unmodified lines
11	};	11	};
12		12
13	struct ptdump_state {	13	struct ptdump_state {
		14	/* level is 0:PGD to 4:PTE, or -1 if unknown */
14	void (note_page)(struct ptdump_state st, unsigned long addr,	15	void (note_page)(struct ptdump_state st, unsigned long addr,
15	int level, unsigned long val);	16	int level, unsigned long val);
16	const struct ptdump_range *range;	17	const struct ptdump_range *range;