mirror of https://gitee.com/openkylin/linux.git
58 lines
1.1 KiB
C
58 lines
1.1 KiB
C
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/*
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* bpf-loader.c
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*
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* Copyright (C) 2015 Wang Nan <wangnan0@huawei.com>
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* Copyright (C) 2015 Huawei Inc.
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*/
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#include <bpf/libbpf.h>
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#include <linux/err.h>
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#include "perf.h"
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#include "debug.h"
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#include "bpf-loader.h"
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#define DEFINE_PRINT_FN(name, level) \
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static int libbpf_##name(const char *fmt, ...) \
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{ \
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va_list args; \
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int ret; \
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\
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va_start(args, fmt); \
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ret = veprintf(level, verbose, pr_fmt(fmt), args);\
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va_end(args); \
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return ret; \
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}
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DEFINE_PRINT_FN(warning, 0)
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DEFINE_PRINT_FN(info, 0)
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DEFINE_PRINT_FN(debug, 1)
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struct bpf_object *bpf__prepare_load(const char *filename)
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{
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struct bpf_object *obj;
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static bool libbpf_initialized;
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if (!libbpf_initialized) {
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libbpf_set_print(libbpf_warning,
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libbpf_info,
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libbpf_debug);
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libbpf_initialized = true;
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}
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obj = bpf_object__open(filename);
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if (!obj) {
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pr_debug("bpf: failed to load %s\n", filename);
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return ERR_PTR(-EINVAL);
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}
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return obj;
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}
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void bpf__clear(void)
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{
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struct bpf_object *obj, *tmp;
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bpf_object__for_each_safe(obj, tmp)
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bpf_object__close(obj);
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}
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