drivers/staging/greybus/greybus_trace.h

   1 /*
   2  * Greybus driver and device API
   3  *
   4  * Copyright 2015 Google Inc.
   5  * Copyright 2015 Linaro Ltd.
   6  *
   7  * Released under the GPLv2 only.
   8  */
   9 #undef TRACE_SYSTEM
  10 #define TRACE_SYSTEM greybus
  11
  12 #if !defined(_TRACE_GREYBUS_H) || defined(TRACE_HEADER_MULTI_READ)
  13 #define _TRACE_GREYBUS_H
  14
  15 #include <linux/tracepoint.h>
  16
  17 struct gb_message;
  18 struct gb_operation;
  19 struct gb_host_device;
  20
  21 #define gb_bundle_name(message)                                         \
  22         (message->operation->connection->bundle ?                       \
  23         dev_name(&message->operation->connection->bundle->dev) :        \
  24         dev_name(&message->operation->connection->hd->svc->dev))
  25
  26 DECLARE_EVENT_CLASS(gb_message,
  27
  28         TP_PROTO(struct gb_message *message),
  29
  30         TP_ARGS(message),
  31
  32         TP_STRUCT__entry(
  33                 __string(name, gb_bundle_name(message))
  34                 __field(u16, op_id)
  35                 __field(u16, intf_cport_id)
  36                 __field(u16, hd_cport_id)
  37                 __field(size_t, payload_size)
  38         ),
  39
  40         TP_fast_assign(
  41                 __assign_str(name, gb_bundle_name(message))
  42                 __entry->op_id = message->operation->id;
  43                 __entry->intf_cport_id =
  44                         message->operation->connection->intf_cport_id;
  45                 __entry->hd_cport_id =
  46                         message->operation->connection->hd_cport_id;
  47                 __entry->payload_size = message->payload_size;
  48         ),
  49
  50         TP_printk("greybus:%s op=%04x if_id=%u hd_id=%u l=%zu",
  51                   __get_str(name), __entry->op_id, __entry->intf_cport_id,
  52                   __entry->hd_cport_id, __entry->payload_size)
  53 );
  54
  55 #define DEFINE_MESSAGE_EVENT(name)                                      \
  56                 DEFINE_EVENT(gb_message, name,                          \
  57                                 TP_PROTO(struct gb_message *message),   \
  58                                 TP_ARGS(message))
  59
  60 /*
  61  * Occurs immediately before calling a host device's message_send()
  62  * method.
  63  */
  64 DEFINE_MESSAGE_EVENT(gb_message_send);
  65
  66 /*
  67  * Occurs after an incoming request message has been received
  68  */
  69 DEFINE_MESSAGE_EVENT(gb_message_recv_request);
  70
  71 /*
  72  * Occurs after an incoming response message has been received,
  73  * after its matching request has been found.
  74  */
  75 DEFINE_MESSAGE_EVENT(gb_message_recv_response);
  76
  77 /*
  78  * Occurs after an operation has been canceled, possibly before the
  79  * cancellation is complete.
  80  */
  81 DEFINE_MESSAGE_EVENT(gb_message_cancel_outgoing);
  82
  83 /*
  84  * Occurs when an incoming request is cancelled; if the response has
  85  * been queued for sending, this occurs after it is sent.
  86  */
  87 DEFINE_MESSAGE_EVENT(gb_message_cancel_incoming);
  88
  89 #undef DEFINE_MESSAGE_EVENT
  90
  91 DECLARE_EVENT_CLASS(gb_operation,
  92
  93         TP_PROTO(struct gb_operation *operation),
  94
  95         TP_ARGS(operation),
  96
  97         TP_STRUCT__entry(
  98                 __field(u16, cport_id)  /* CPort of HD side of connection */
  99                 __field(u16, id)        /* Operation ID */
 100                 __field(u8, type)
 101                 __field(unsigned long, flags)
 102                 __field(int, active)
 103                 __field(int, waiters)
 104                 __field(int, errno)
 105         ),
 106
 107         TP_fast_assign(
 108                 __entry->cport_id = operation->connection->hd_cport_id;
 109                 __entry->id = operation->id;
 110                 __entry->type = operation->type;
 111                 __entry->flags = operation->flags;
 112                 __entry->active = operation->active;
 113                 __entry->waiters = atomic_read(&operation->waiters);
 114                 __entry->errno = operation->errno;
 115         ),
 116
 117         TP_printk("id=%04x type=0x%02x cport_id=%04x flags=0x%lx active=%d waiters=%d errno=%d",
 118                   __entry->id, __entry->cport_id, __entry->type, __entry->flags,
 119                   __entry->active, __entry->waiters, __entry->errno)
 120 );
 121
 122 #define DEFINE_OPERATION_EVENT(name)                                    \
 123                 DEFINE_EVENT(gb_operation, name,                        \
 124                                 TP_PROTO(struct gb_operation *operation), \
 125                                 TP_ARGS(operation))
 126
 127 /*
 128  * Occurs after a new operation is created for an outgoing request
 129  * has been successfully created.
 130  */
 131 DEFINE_OPERATION_EVENT(gb_operation_create);
 132
 133 /*
 134  * Occurs after a new operation has been created for an incoming
 135  * request has been successfully created and initialized.
 136  */
 137 DEFINE_OPERATION_EVENT(gb_operation_create_incoming);
 138
 139 /*
 140  * Occurs when the last reference to an operation has been dropped,
 141  * prior to freeing resources.
 142  */
 143 DEFINE_OPERATION_EVENT(gb_operation_destroy);
 144
 145 /*
 146  * Occurs when an operation has been marked active, after updating
 147  * its active count.
 148  */
 149 DEFINE_OPERATION_EVENT(gb_operation_get_active);
 150
 151 /*
 152  * Occurs when an operation has been marked active, before updating
 153  * its active count.
 154  */
 155 DEFINE_OPERATION_EVENT(gb_operation_put_active);
 156
 157 #undef DEFINE_OPERATION_EVENT
 158
 159 DECLARE_EVENT_CLASS(gb_host_device,
 160
 161         TP_PROTO(struct gb_host_device *hd),
 162
 163         TP_ARGS(hd),
 164
 165         TP_STRUCT__entry(
 166                 __field(int, bus_id)
 167                 __field(u8, num_cports)
 168                 __field(size_t, buffer_size_max)
 169         ),
 170
 171         TP_fast_assign(
 172                 __entry->bus_id = hd->bus_id;
 173                 __entry->num_cports = hd->num_cports;
 174                 __entry->buffer_size_max = hd->buffer_size_max;
 175         ),
 176
 177         TP_printk("greybus: bus_id=%d num_cports=%hu mtu=%zu",
 178                 __entry->bus_id, __entry->num_cports,
 179                 __entry->buffer_size_max)
 180 );
 181
 182 #define DEFINE_HD_EVENT(name)                                           \
 183                 DEFINE_EVENT(gb_host_device, name,                      \
 184                                 TP_PROTO(struct gb_host_device *hd),    \
 185                                 TP_ARGS(hd))
 186
 187 /*
 188  * Occurs after a new host device is successfully created, before
 189  * its SVC has been set up.
 190  */
 191 DEFINE_HD_EVENT(gb_hd_create);
 192
 193 /*
 194  * Occurs after the last reference to a host device has been
 195  * dropped.
 196  */
 197 DEFINE_HD_EVENT(gb_hd_release);
 198
 199 /*
 200  * Occurs after a new host device has been added, after the
 201  * connection to its SVC has * been enabled.
 202  */
 203 DEFINE_HD_EVENT(gb_hd_add);
 204
 205 /*
 206  * Occurs when a host device is being disconnected from the AP USB
 207  * host controller.
 208  */
 209 DEFINE_HD_EVENT(gb_hd_del);
 210
 211 #undef DEFINE_HD_EVENT
 212
 213 #endif /* _TRACE_GREYBUS_H */
 214
 215 /* This part must be outside protection */
 216 #undef TRACE_INCLUDE_PATH
 217 #define TRACE_INCLUDE_PATH .
 218
 219 /*
 220  * TRACE_INCLUDE_FILE is not needed if the filename and TRACE_SYSTEM are equal
 221  */
 222 #undef TRACE_INCLUDE_FILE
 223 #define TRACE_INCLUDE_FILE greybus_trace
 224 #include <trace/define_trace.h>
 225