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	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	69	struct allocinfo_get_at {
49		− __u64 pos; /* input */
	70	+ /* inputs */
	71	+ __u64 pos;
	72	+ struct allocinfo_filter filter;
	73	+ /* output */
50	74	struct allocinfo_tag_data data;
51	75	};
52	76