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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
42 lines
1.2 KiB
C
42 lines
1.2 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/* Copyright (c) 2020 Facebook */
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#undef TRACE_SYSTEM
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#define TRACE_SYSTEM bpf_testmod
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#if !defined(_BPF_TESTMOD_EVENTS_H) || defined(TRACE_HEADER_MULTI_READ)
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#define _BPF_TESTMOD_EVENTS_H
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#include <linux/tracepoint.h>
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#include "bpf_testmod.h"
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TRACE_EVENT(bpf_testmod_test_read,
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TP_PROTO(struct task_struct *task, struct bpf_testmod_test_read_ctx *ctx),
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TP_ARGS(task, ctx),
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TP_STRUCT__entry(
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__field(pid_t, pid)
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__array(char, comm, TASK_COMM_LEN)
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__field(loff_t, off)
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__field(size_t, len)
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),
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TP_fast_assign(
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__entry->pid = task->pid;
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memcpy(__entry->comm, task->comm, TASK_COMM_LEN);
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__entry->off = ctx->off;
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__entry->len = ctx->len;
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),
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TP_printk("pid=%d comm=%s off=%llu len=%zu",
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__entry->pid, __entry->comm, __entry->off, __entry->len)
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);
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/* A bare tracepoint with no event associated with it */
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DECLARE_TRACE(bpf_testmod_test_write_bare,
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TP_PROTO(struct task_struct *task, struct bpf_testmod_test_write_ctx *ctx),
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TP_ARGS(task, ctx)
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);
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#endif /* _BPF_TESTMOD_EVENTS_H */
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#undef TRACE_INCLUDE_PATH
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#define TRACE_INCLUDE_PATH .
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#define TRACE_INCLUDE_FILE bpf_testmod-events
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#include <trace/define_trace.h>
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