1 /* 2 * Copyright(c) 2015, 2016 Intel Corporation. 3 * 4 * This file is provided under a dual BSD/GPLv2 license. When using or 5 * redistributing this file, you may do so under either license. 6 * 7 * GPL LICENSE SUMMARY 8 * 9 * This program is free software; you can redistribute it and/or modify 10 * it under the terms of version 2 of the GNU General Public License as 11 * published by the Free Software Foundation. 12 * 13 * This program is distributed in the hope that it will be useful, but 14 * WITHOUT ANY WARRANTY; without even the implied warranty of 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 16 * General Public License for more details. 17 * 18 * BSD LICENSE 19 * 20 * Redistribution and use in source and binary forms, with or without 21 * modification, are permitted provided that the following conditions 22 * are met: 23 * 24 * - Redistributions of source code must retain the above copyright 25 * notice, this list of conditions and the following disclaimer. 26 * - Redistributions in binary form must reproduce the above copyright 27 * notice, this list of conditions and the following disclaimer in 28 * the documentation and/or other materials provided with the 29 * distribution. 30 * - Neither the name of Intel Corporation nor the names of its 31 * contributors may be used to endorse or promote products derived 32 * from this software without specific prior written permission. 33 * 34 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 35 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 36 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 37 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 38 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 39 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 40 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 41 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 42 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 43 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 44 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 45 * 46 */ 47 #if !defined(__HFI1_TRACE_EXTRA_H) || defined(TRACE_HEADER_MULTI_READ) 48 #define __HFI1_TRACE_EXTRA_H 49 50 #include <linux/tracepoint.h> 51 #include <linux/trace_seq.h> 52 53 #include "hfi.h" 54 55 /* 56 * Note: 57 * This produces a REALLY ugly trace in the console output when the string is 58 * too long. 59 */ 60 61 #undef TRACE_SYSTEM 62 #define TRACE_SYSTEM hfi1_dbg 63 64 #define MAX_MSG_LEN 512 65 66 DECLARE_EVENT_CLASS(hfi1_trace_template, 67 TP_PROTO(const char *function, struct va_format *vaf), 68 TP_ARGS(function, vaf), 69 TP_STRUCT__entry(__string(function, function) 70 __dynamic_array(char, msg, MAX_MSG_LEN) 71 ), 72 TP_fast_assign(__assign_str(function, function); 73 WARN_ON_ONCE(vsnprintf 74 (__get_dynamic_array(msg), 75 MAX_MSG_LEN, vaf->fmt, 76 *vaf->va) >= 77 MAX_MSG_LEN); 78 ), 79 TP_printk("(%s) %s", 80 __get_str(function), 81 __get_str(msg)) 82 ); 83 84 /* 85 * It may be nice to macroize the __hfi1_trace but the va_* stuff requires an 86 * actual function to work and can not be in a macro. 87 */ 88 #define __hfi1_trace_def(lvl) \ 89 void __hfi1_trace_##lvl(const char *funct, char *fmt, ...); \ 90 \ 91 DEFINE_EVENT(hfi1_trace_template, hfi1_ ##lvl, \ 92 TP_PROTO(const char *function, struct va_format *vaf), \ 93 TP_ARGS(function, vaf)) 94 95 #define __hfi1_trace_fn(lvl) \ 96 void __hfi1_trace_##lvl(const char *func, char *fmt, ...) \ 97 { \ 98 struct va_format vaf = { \ 99 .fmt = fmt, \ 100 }; \ 101 va_list args; \ 102 \ 103 va_start(args, fmt); \ 104 vaf.va = &args; \ 105 trace_hfi1_ ##lvl(func, &vaf); \ 106 va_end(args); \ 107 return; \ 108 } 109 110 /* 111 * To create a new trace level simply define it below and as a __hfi1_trace_fn 112 * in trace.c. This will create all the hooks for calling 113 * hfi1_cdbg(LVL, fmt, ...); as well as take care of all 114 * the debugfs stuff. 115 */ 116 __hfi1_trace_def(PKT); 117 __hfi1_trace_def(PROC); 118 __hfi1_trace_def(SDMA); 119 __hfi1_trace_def(LINKVERB); 120 __hfi1_trace_def(DEBUG); 121 __hfi1_trace_def(SNOOP); 122 __hfi1_trace_def(CNTR); 123 __hfi1_trace_def(PIO); 124 __hfi1_trace_def(DC8051); 125 __hfi1_trace_def(FIRMWARE); 126 __hfi1_trace_def(RCVCTRL); 127 __hfi1_trace_def(TID); 128 __hfi1_trace_def(MMU); 129 __hfi1_trace_def(IOCTL); 130 131 #define hfi1_cdbg(which, fmt, ...) \ 132 __hfi1_trace_##which(__func__, fmt, ##__VA_ARGS__) 133 134 #define hfi1_dbg(fmt, ...) \ 135 hfi1_cdbg(DEBUG, fmt, ##__VA_ARGS__) 136 137 /* 138 * Define HFI1_EARLY_DBG at compile time or here to enable early trace 139 * messages. Do not check in an enablement for this. 140 */ 141 142 #ifdef HFI1_EARLY_DBG 143 #define hfi1_dbg_early(fmt, ...) \ 144 trace_printk(fmt, ##__VA_ARGS__) 145 #else 146 #define hfi1_dbg_early(fmt, ...) 147 #endif 148 149 #endif /* __HFI1_TRACE_EXTRA_H */ 150 151 #undef TRACE_INCLUDE_PATH 152 #undef TRACE_INCLUDE_FILE 153 #define TRACE_INCLUDE_PATH . 154 #define TRACE_INCLUDE_FILE trace_dbg 155 #include <trace/define_trace.h> 156