alloc_tag: add ioctl filters to /proc/allocinfo

Extend the capability of the IOCTL mechanism to filter allocations based on tag's module name, function name, file name and line number.

Abhishek Bapat committed 4 months ago

Commit 5732a4e1 parent 1d581ab2 files · +89 −5Browse files

Showing the changes to include/uapi/linux (1 of 2 files). Show all

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@@ -45,8 +45,32 @@ struct allocinfo_tag_data { · 44 unmodified lines
45	struct allocinfo_counter counter;	45	struct allocinfo_counter counter;
46	};	46	};
47		47
		48	enum {
		49	ALLOCINFO_FILTER_MODNAME,
		50	ALLOCINFO_FILTER_FUNCTION,
		51	ALLOCINFO_FILTER_FILENAME,
		52	ALLOCINFO_FILTER_LINENO,
		53	__ALLOCINFO_FILTER_LAST = ALLOCINFO_FILTER_LINENO
		54	};
		55
		56	#define ALLOCINFO_FILTER_MASK_MODNAME (1 << ALLOCINFO_FILTER_MODNAME)
		57	#define ALLOCINFO_FILTER_MASK_FUNCTION (1 << ALLOCINFO_FILTER_FUNCTION)
		58	#define ALLOCINFO_FILTER_MASK_FILENAME (1 << ALLOCINFO_FILTER_FILENAME)
		59	#define ALLOCINFO_FILTER_MASK_LINENO (1 << ALLOCINFO_FILTER_LINENO)
		60
		61	#define ALLOCINFO_FILTER_MASKS \
		62	((1 << (__ALLOCINFO_FILTER_LAST + 1)) - 1)
		63
		64	struct allocinfo_filter {
		65	__u64 mask; /* bitmask of the filter fields used */
		66	struct allocinfo_tag fields;
		67	};
		68
48	struct allocinfo_get_at {	69	struct allocinfo_get_at {
49	__u64 pos; /* input */	70	/* inputs */
		71	__u64 pos;
		72	struct allocinfo_filter filter;
		73	/* output */
50	struct allocinfo_tag_data data;	74	struct allocinfo_tag_data data;
51	};	75	};
52		76