linux-stable/tools/testing/selftests/bpf/bpf_testmod/bpf_testmod-events.h
Qais Yousef 407be92206 selftests: bpf: Add a new test for bare tracepoints
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
2021-01-20 14:14:05 -08:00

42 lines
1.2 KiB
C

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