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| author | Martin KaFai Lau | 2016-11-11 19:55:09 +0100 |
|---|---|---|
| committer | David S. Miller | 2016-11-15 17:50:20 +0100 |
| commit | 29ba732acbeece1e34c68483d1ec1f3720fa1bb3 (patch) | |
| tree | 31274a2c9d6b8bda6cc14253d0781f6462974dd1 /include/uapi/linux/bpf.h | |
| parent | bpf: Refactor codes handling percpu map (diff) | |
| download | kernel-qcow2-linux-29ba732acbeece1e34c68483d1ec1f3720fa1bb3.tar.gz kernel-qcow2-linux-29ba732acbeece1e34c68483d1ec1f3720fa1bb3.tar.xz kernel-qcow2-linux-29ba732acbeece1e34c68483d1ec1f3720fa1bb3.zip | |
bpf: Add BPF_MAP_TYPE_LRU_HASH
Provide a LRU version of the existing BPF_MAP_TYPE_HASH.
Signed-off-by: Martin KaFai Lau <kafai@fb.com>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/uapi/linux/bpf.h')
| -rw-r--r-- | include/uapi/linux/bpf.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/include/uapi/linux/bpf.h b/include/uapi/linux/bpf.h index e2f38e0091b6..ed8c6799fb14 100644 --- a/include/uapi/linux/bpf.h +++ b/include/uapi/linux/bpf.h @@ -85,6 +85,7 @@ enum bpf_map_type { BPF_MAP_TYPE_PERCPU_ARRAY, BPF_MAP_TYPE_STACK_TRACE, BPF_MAP_TYPE_CGROUP_ARRAY, + BPF_MAP_TYPE_LRU_HASH, }; enum bpf_prog_type { @@ -106,6 +107,13 @@ enum bpf_prog_type { #define BPF_EXIST 2 /* update existing element */ #define BPF_F_NO_PREALLOC (1U << 0) +/* Instead of having one common LRU list in the + * BPF_MAP_TYPE_LRU_HASH map, use a percpu LRU list + * which can scale and perform better. + * Note, the LRU nodes (including free nodes) cannot be moved + * across different LRU lists. + */ +#define BPF_F_NO_COMMON_LRU (1U << 1) union bpf_attr { struct { /* anonymous struct used by BPF_MAP_CREATE command */ |