mirror of
https://github.com/brain-hackers/linux-brain.git
synced 2024-06-09 23:36:23 +09:00
8fa25f303a
Will be used shortly in the augmented syscalls work together with a PERF_COUNT_SW_BPF_OUTPUT software event to insert syscalls + pointer contents in the perf ring buffer, to be consumed by 'perf trace' beautifiers. 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-ajlkpz4cd688ulx1u30htkj3@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
37 lines
1.1 KiB
C
37 lines
1.1 KiB
C
// 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 */
|