30 lines
545 B
C
30 lines
545 B
C
// SPDX-License-Identifier: GPL-2.0
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/* Copyright (c) 2021 Facebook */
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#include "vmlinux.h"
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#include <bpf/bpf_helpers.h>
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#include "bpf_misc.h"
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char _license[] SEC("license") = "GPL";
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u32 nr_loops;
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long hits;
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static int empty_callback(__u32 index, void *data)
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{
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return 0;
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}
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static int outer_loop(__u32 index, void *data)
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{
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bpf_loop(nr_loops, empty_callback, NULL, 0);
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__sync_add_and_fetch(&hits, nr_loops);
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return 0;
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}
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SEC("fentry/" SYS_PREFIX "sys_getpgid")
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int benchmark(void *ctx)
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{
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bpf_loop(1000, outer_loop, NULL, 0);
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return 0;
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}
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