From: Arnaldo Carvalho de Melo <a...@redhat.com> Starting with a helper for a basic pid_map(), a hash using a pid as a key.
Cc: Adrian Hunter <adrian.hun...@intel.com> Cc: David Ahern <dsah...@gmail.com> Cc: Jiri Olsa <jo...@kernel.org> Cc: Namhyung Kim <namhy...@kernel.org> Cc: Wang Nan <wangn...@huawei.com> Link: https://lkml.kernel.org/n/tip-gdwvq53wltvq6b3g5tdmh...@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <a...@redhat.com> --- tools/perf/include/bpf/bpf.h | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/tools/perf/include/bpf/bpf.h b/tools/perf/include/bpf/bpf.h index 52b6d87fe822..04ecd425a237 100644 --- a/tools/perf/include/bpf/bpf.h +++ b/tools/perf/include/bpf/bpf.h @@ -18,6 +18,17 @@ struct bpf_map { unsigned int numa_node; }; +#define pid_map(name, value_type) \ +struct bpf_map SEC("maps") name = { \ + .type = BPF_MAP_TYPE_HASH, \ + .key_size = sizeof(pid_t), \ + .value_size = sizeof(value_type), \ + .max_entries = 512, \ +} + +static int (*bpf_map_update_elem)(struct bpf_map *map, void *key, void *value, u64 flags) = (void *)BPF_FUNC_map_update_elem; +static void *(*bpf_map_lookup_elem)(struct bpf_map *map, void *key) = (void *)BPF_FUNC_map_lookup_elem; + #define SEC(NAME) __attribute__((section(NAME), used)) #define probe(function, vars) \ -- 2.14.5
