diff options
Diffstat (limited to 'tools/perf/include/bpf/bpf.h')
-rw-r--r-- | tools/perf/include/bpf/bpf.h | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/tools/perf/include/bpf/bpf.h b/tools/perf/include/bpf/bpf.h new file mode 100644 index 000000000..47897d65e --- /dev/null +++ b/tools/perf/include/bpf/bpf.h @@ -0,0 +1,36 @@ +// SPDX-License-Identifier: GPL-2.0 +#ifndef _PERF_BPF_H +#define _PERF_BPF_H + +#include <uapi/linux/bpf.h> + +/* + * A helper structure used by eBPF C program to describe map attributes to + * elf_bpf loader, taken from tools/testing/selftests/bpf/bpf_helpers.h: + */ +struct bpf_map { + unsigned int type; + unsigned int key_size; + unsigned int value_size; + unsigned int max_entries; + unsigned int map_flags; + unsigned int inner_map_idx; + unsigned int numa_node; +}; + +#define SEC(NAME) __attribute__((section(NAME), used)) + +#define probe(function, vars) \ + SEC(#function "=" #function " " #vars) function + +#define syscall_enter(name) \ + SEC("syscalls:sys_enter_" #name) syscall_enter_ ## name + +#define license(name) \ +char _license[] SEC("license") = #name; \ +int _version SEC("version") = LINUX_VERSION_CODE; + +static int (*probe_read)(void *dst, int size, const void *unsafe_addr) = (void *)BPF_FUNC_probe_read; +static int (*probe_read_str)(void *dst, int size, const void *unsafe_addr) = (void *)BPF_FUNC_probe_read_str; + +#endif /* _PERF_BPF_H */ |