tools/testing/selftests/bpf/bpf_testmod/bpf_testmod-events.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 /* Copyright (c) 2020 Facebook */
   3 #undef TRACE_SYSTEM
   4 #define TRACE_SYSTEM bpf_testmod
   5
   6 #if !defined(_BPF_TESTMOD_EVENTS_H) || defined(TRACE_HEADER_MULTI_READ)
   7 #define _BPF_TESTMOD_EVENTS_H
   8
   9 #include <linux/tracepoint.h>
  10 #include "bpf_testmod.h"
  11
  12 TRACE_EVENT(bpf_testmod_test_read,
  13         TP_PROTO(struct task_struct *task, struct bpf_testmod_test_read_ctx *ctx),
  14         TP_ARGS(task, ctx),
  15         TP_STRUCT__entry(
  16                 __field(pid_t, pid)
  17                 __array(char, comm, TASK_COMM_LEN)
  18                 __field(loff_t, off)
  19                 __field(size_t, len)
  20         ),
  21         TP_fast_assign(
  22                 __entry->pid = task->pid;
  23                 memcpy(__entry->comm, task->comm, TASK_COMM_LEN);
  24                 __entry->off = ctx->off;
  25                 __entry->len = ctx->len;
  26         ),
  27         TP_printk("pid=%d comm=%s off=%llu len=%zu",
  28                   __entry->pid, __entry->comm, __entry->off, __entry->len)
  29 );
  30
  31 /* A bare tracepoint with no event associated with it */
  32 DECLARE_TRACE(bpf_testmod_test_write_bare,
  33         TP_PROTO(struct task_struct *task, struct bpf_testmod_test_write_ctx *ctx),
  34         TP_ARGS(task, ctx)
  35 );
  36
  37 /* Used in bpf_testmod_test_read() to test __nullable suffix */
  38 DECLARE_TRACE(bpf_testmod_test_nullable_bare,
  39         TP_PROTO(struct bpf_testmod_test_read_ctx *ctx__nullable),
  40         TP_ARGS(ctx__nullable)
  41 );
  42
  43 struct sk_buff;
  44
  45 DECLARE_TRACE(bpf_testmod_test_raw_tp_null,
  46         TP_PROTO(struct sk_buff *skb),
  47         TP_ARGS(skb)
  48 );
  49
  50
  51 #undef BPF_TESTMOD_DECLARE_TRACE
  52 #ifdef DECLARE_TRACE_WRITABLE
  53 #define BPF_TESTMOD_DECLARE_TRACE(call, proto, args, size) \
  54         DECLARE_TRACE_WRITABLE(call, PARAMS(proto), PARAMS(args), size)
  55 #else
  56 #define BPF_TESTMOD_DECLARE_TRACE(call, proto, args, size) \
  57         DECLARE_TRACE(call, PARAMS(proto), PARAMS(args))
  58 #endif
  59
  60 BPF_TESTMOD_DECLARE_TRACE(bpf_testmod_test_writable_bare,
  61         TP_PROTO(struct bpf_testmod_test_writable_ctx *ctx),
  62         TP_ARGS(ctx),
  63         sizeof(struct bpf_testmod_test_writable_ctx)
  64 );
  65
  66 #endif /* _BPF_TESTMOD_EVENTS_H */
  67
  68 #undef TRACE_INCLUDE_PATH
  69 #define TRACE_INCLUDE_PATH .
  70 #define TRACE_INCLUDE_FILE bpf_testmod-events
  71 #include <trace/define_trace.h>