23 lines
497 B
C
23 lines
497 B
C
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// SPDX-License-Identifier: GPL-2.0
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// Copyright (c) 2020, Oracle and/or its affiliates.
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#include "vmlinux.h"
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#include <bpf/bpf_helpers.h>
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#include <bpf/bpf_tracing.h>
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#include "bpf_misc.h"
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char _license[] SEC("license") = "GPL";
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int trace_printk_ret = 0;
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int trace_printk_ran = 0;
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const char fmt[] = "Testing,testing %d\n";
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SEC("fentry/" SYS_PREFIX "sys_nanosleep")
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int sys_enter(void *ctx)
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{
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trace_printk_ret = bpf_trace_printk(fmt, sizeof(fmt),
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++trace_printk_ran);
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return 0;
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}
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