mirror of
https://github.com/torvalds/linux
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407be92206
Reuse module_attach infrastructure to add a new bare tracepoint to check we can attach to it as a raw tracepoint. Signed-off-by: Qais Yousef <qais.yousef@arm.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Acked-by: Yonghong Song <yhs@fb.com> Link: https://lore.kernel.org/bpf/20210119122237.2426878-3-qais.yousef@arm.com
88 lines
2 KiB
C
88 lines
2 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/* Copyright (c) 2020 Facebook */
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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/bpf_core_read.h>
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#include "../bpf_testmod/bpf_testmod.h"
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__u32 raw_tp_read_sz = 0;
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SEC("raw_tp/bpf_testmod_test_read")
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int BPF_PROG(handle_raw_tp,
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struct task_struct *task, struct bpf_testmod_test_read_ctx *read_ctx)
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{
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raw_tp_read_sz = BPF_CORE_READ(read_ctx, len);
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return 0;
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}
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__u32 raw_tp_bare_write_sz = 0;
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SEC("raw_tp/bpf_testmod_test_write_bare")
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int BPF_PROG(handle_raw_tp_bare,
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struct task_struct *task, struct bpf_testmod_test_write_ctx *write_ctx)
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{
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raw_tp_bare_write_sz = BPF_CORE_READ(write_ctx, len);
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return 0;
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}
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__u32 tp_btf_read_sz = 0;
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SEC("tp_btf/bpf_testmod_test_read")
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int BPF_PROG(handle_tp_btf,
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struct task_struct *task, struct bpf_testmod_test_read_ctx *read_ctx)
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{
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tp_btf_read_sz = read_ctx->len;
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return 0;
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}
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__u32 fentry_read_sz = 0;
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SEC("fentry/bpf_testmod_test_read")
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int BPF_PROG(handle_fentry,
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struct file *file, struct kobject *kobj,
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struct bin_attribute *bin_attr, char *buf, loff_t off, size_t len)
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{
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fentry_read_sz = len;
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return 0;
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}
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__u32 fentry_manual_read_sz = 0;
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SEC("fentry/placeholder")
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int BPF_PROG(handle_fentry_manual,
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struct file *file, struct kobject *kobj,
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struct bin_attribute *bin_attr, char *buf, loff_t off, size_t len)
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{
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fentry_manual_read_sz = len;
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return 0;
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}
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__u32 fexit_read_sz = 0;
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int fexit_ret = 0;
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SEC("fexit/bpf_testmod_test_read")
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int BPF_PROG(handle_fexit,
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struct file *file, struct kobject *kobj,
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struct bin_attribute *bin_attr, char *buf, loff_t off, size_t len,
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int ret)
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{
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fexit_read_sz = len;
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fexit_ret = ret;
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return 0;
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}
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__u32 fmod_ret_read_sz = 0;
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SEC("fmod_ret/bpf_testmod_test_read")
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int BPF_PROG(handle_fmod_ret,
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struct file *file, struct kobject *kobj,
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struct bin_attribute *bin_attr, char *buf, loff_t off, size_t len)
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{
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fmod_ret_read_sz = len;
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return 0; /* don't override the exit code */
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}
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char _license[] SEC("license") = "GPL";
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