bpf: Add BPF_MAP_TYPE_LRU_PERCPU_HASH

Provide a LRU version of the existing BPF_MAP_TYPE_PERCPU_HASH

Martin KaFai Lau committed 10 years ago

Commit 8f844931 parent 29ba7323 files · +131 −9Browse files

Showing the changes to include/uapi/linux (1 of 3 files). Show all

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@@ -86,6 +86,7 @@ enum bpf_map_type { · 85 unmodified lines
86	86	BPF_MAP_TYPE_STACK_TRACE,
87	87	BPF_MAP_TYPE_CGROUP_ARRAY,
88	88	BPF_MAP_TYPE_LRU_HASH,
	89	+ BPF_MAP_TYPE_LRU_PERCPU_HASH,
89	90	};
90	91
91	92	enum bpf_prog_type {
@@ -108,7 +109,7 @@ enum bpf_prog_type { · 16 unmodified lines
108	109
109	110	#define BPF_F_NO_PREALLOC (1U << 0)
110	111	/* Instead of having one common LRU list in the
111		− * BPF_MAP_TYPE_LRU_HASH map, use a percpu LRU list
	112	+ * BPF_MAP_TYPE_LRU_[PERCPU_]HASH map, use a percpu LRU list
112	113	* which can scale and perform better.
113	114	* Note, the LRU nodes (including free nodes) cannot be moved
114	115	* across different LRU lists.

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