diff options
| author |   Arnaldo Carvalho de Melo <acme@redhat.com> | 2018-11-06 15:46:27 -0300 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2018-11-21 12:00:31 -0300 |
| commit | 382b55dbef6b68e3fef2fd8a438fbaff57695308 (patch) | |
| tree | 260e7daaa4c1ed673abb7adb0442a3a3bb032f2a /tools/perf/include/bpf | |
| parent | perf augmented_syscalls: Remove needless linux/socket.h include (diff) | |
| download | linux-dev-382b55dbef6b68e3fef2fd8a438fbaff57695308.tar.xz linux-dev-382b55dbef6b68e3fef2fd8a438fbaff57695308.zip | |
perf bpf: Add defines for map insertion/lookup
Starting with a helper for a basic pid_map(), a hash using a pid as a
key.
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: https://lkml.kernel.org/n/tip-gdwvq53wltvq6b3g5tdmh0cw@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/include/bpf')
| -rw-r--r-- | tools/perf/include/bpf/bpf.h | 11 |
1 files changed, 11 insertions, 0 deletions
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) \ |