mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-12-23 19:14:30 +08:00
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
43 lines
1.2 KiB
C
43 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>
|