forked from Minki/linux
43798bf372
Add bpf_map_update_elem() helper function which calls the sys_bpf syscall to update elements in bpf maps. Upcoming patches will use it to adjust data in map through the perf command line. Signed-off-by: He Kuang <hekuang@huawei.com> Cc: Alexei Starovoitov <ast@kernel.org> Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Cc: Zefan Li <lizefan@huawei.com> Cc: pi3orama@163.com Link: http://lkml.kernel.org/r/1448372181-151723-4-git-send-email-wangnan0@huawei.com Signed-off-by: Wang Nan <wangnan0@huawei.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
26 lines
676 B
C
26 lines
676 B
C
/*
|
|
* common eBPF ELF operations.
|
|
*
|
|
* Copyright (C) 2013-2015 Alexei Starovoitov <ast@kernel.org>
|
|
* Copyright (C) 2015 Wang Nan <wangnan0@huawei.com>
|
|
* Copyright (C) 2015 Huawei Inc.
|
|
*/
|
|
#ifndef __BPF_BPF_H
|
|
#define __BPF_BPF_H
|
|
|
|
#include <linux/bpf.h>
|
|
|
|
int bpf_create_map(enum bpf_map_type map_type, int key_size, int value_size,
|
|
int max_entries);
|
|
|
|
/* Recommend log buffer size */
|
|
#define BPF_LOG_BUF_SIZE 65536
|
|
int bpf_load_program(enum bpf_prog_type type, struct bpf_insn *insns,
|
|
size_t insns_cnt, char *license,
|
|
u32 kern_version, char *log_buf,
|
|
size_t log_buf_sz);
|
|
|
|
int bpf_map_update_elem(int fd, void *key, void *value,
|
|
u64 flags);
|
|
#endif
|