diff options
Diffstat (limited to 'tools/perf/include/bpf/bpf.h')
-rw-r--r-- | tools/perf/include/bpf/bpf.h | 70 |
1 files changed, 0 insertions, 70 deletions
diff --git a/tools/perf/include/bpf/bpf.h b/tools/perf/include/bpf/bpf.h deleted file mode 100644 index b422aeef5339..000000000000 --- a/tools/perf/include/bpf/bpf.h +++ /dev/null @@ -1,70 +0,0 @@ -// 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 bpf_map(name, _type, type_key, type_val, _max_entries) \ -struct bpf_map SEC("maps") name = { \ - .type = BPF_MAP_TYPE_##_type, \ - .key_size = sizeof(type_key), \ - .value_size = sizeof(type_val), \ - .max_entries = _max_entries, \ -}; \ -struct ____btf_map_##name { \ - type_key key; \ - type_val value; \ -}; \ -struct ____btf_map_##name __attribute__((section(".maps." #name), used)) \ - ____btf_map_##name = { } - -/* - * FIXME: this should receive .max_entries as a parameter, as careful - * tuning of these limits is needed to avoid hitting limits that - * prevents other BPF constructs, such as tracepoint handlers, - * to get installed, with cryptic messages from libbpf, etc. - * For the current need, 'perf trace --filter-pids', 64 should - * be good enough, but this surely needs to be revisited. - */ -#define pid_map(name, value_type) bpf_map(name, HASH, pid_t, value_type, 64) - -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; - -static void (*bpf_tail_call)(void *ctx, void *map, int index) = (void *)BPF_FUNC_tail_call; - -#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 syscall_exit(name) \ - SEC("syscalls:sys_exit_" #name) syscall_exit_ ## 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; - -static int (*perf_event_output)(void *, struct bpf_map *, int, void *, unsigned long) = (void *)BPF_FUNC_perf_event_output; - -#endif /* _PERF_BPF_H */ |