include/instrumentation/events/module.h

   1 // SPDX-FileCopyrightText: 2012 Paul Woegerer <paul_woegerer@mentor.com>
   2 //
   3 // SPDX-License-Identifier: GPL-2.0-only
   4
   5 /*
   6  * Because linux/module.h has tracepoints in the header, and ftrace.h
   7  * eventually includes this file, define_trace.h includes linux/module.h
   8  * But we do not want the module.h to override the TRACE_SYSTEM macro
   9  * variable that define_trace.h is processing, so we only set it
  10  * when module events are being processed, which would happen when
  11  * CREATE_TRACE_POINTS is defined.
  12  */
  13 #ifdef CREATE_TRACE_POINTS
  14 #undef TRACE_SYSTEM
  15 #define TRACE_SYSTEM module
  16 #endif
  17
  18 #if !defined(LTTNG_TRACE_MODULE_H) || defined(TRACE_HEADER_MULTI_READ)
  19 #define LTTNG_TRACE_MODULE_H
  20
  21 #include <lttng/tracepoint-event.h>
  22 #include <lttng/kernel-version.h>
  23 #include <linux/kernel.h>
  24
  25 #ifdef CONFIG_MODULES
  26
  27 #ifndef _TRACE_MODULE_DEF
  28 #define _TRACE_MODULE_DEF
  29 struct module;
  30
  31 #endif
  32
  33 LTTNG_TRACEPOINT_ENUM(taint,
  34         TP_ENUM_VALUES(
  35                 ctf_enum_value("PROPRIETARY_MODULE", 1UL << TAINT_PROPRIETARY_MODULE)
  36                 ctf_enum_value("FORCED_MODULE", 1UL << TAINT_FORCED_MODULE)
  37                 ctf_enum_value("CPU_OUT_OF_SPEC", 1UL << TAINT_CPU_OUT_OF_SPEC)
  38                 ctf_enum_value("FORCED_RMMOD", 1UL << TAINT_FORCED_RMMOD)
  39                 ctf_enum_value("MACHINE_CHECK", 1UL << TAINT_MACHINE_CHECK)
  40                 ctf_enum_value("BAD_PAGE", 1UL << TAINT_BAD_PAGE)
  41                 ctf_enum_value("USER", 1UL << TAINT_USER)
  42                 ctf_enum_value("DIE", 1UL << TAINT_DIE)
  43                 ctf_enum_value("OVERRIDDEN_ACPI_TABLE", 1UL << TAINT_OVERRIDDEN_ACPI_TABLE)
  44                 ctf_enum_value("WARN", 1UL << TAINT_WARN)
  45                 ctf_enum_value("CRAP", 1UL << TAINT_CRAP)
  46                 ctf_enum_value("FIRMWARE_WORKAROUND", 1UL << TAINT_FIRMWARE_WORKAROUND)
  47                 ctf_enum_value("OOT_MODULE", 1UL << TAINT_OOT_MODULE)
  48                 ctf_enum_value("UNSIGNED_MODULE", 1UL << TAINT_UNSIGNED_MODULE)
  49                 ctf_enum_value("SOFTLOCKUP", 1UL << TAINT_SOFTLOCKUP)
  50                 ctf_enum_value("LIVEPATCH", 1UL << TAINT_LIVEPATCH)
  51 #if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(4,15,0))
  52                 ctf_enum_value("AUX", 1UL << TAINT_AUX)
  53 #endif
  54 #if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(4,17,0))
  55                 ctf_enum_value("RANDSTRUCT", 1UL << TAINT_RANDSTRUCT)
  56 #endif
  57         )
  58 )
  59
  60 LTTNG_TRACEPOINT_EVENT(module_load,
  61
  62         TP_PROTO(struct module *mod),
  63
  64         TP_ARGS(mod),
  65
  66         TP_FIELDS(
  67                 ctf_enum(taint, unsigned int, taints, mod->taints)
  68                 ctf_string(name, mod->name)
  69         )
  70 )
  71
  72 LTTNG_TRACEPOINT_EVENT(module_free,
  73
  74         TP_PROTO(struct module *mod),
  75
  76         TP_ARGS(mod),
  77
  78         TP_FIELDS(
  79                 ctf_string(name, mod->name)
  80         )
  81 )
  82
  83 #ifdef CONFIG_MODULE_UNLOAD
  84 /* trace_module_get/put are only used if CONFIG_MODULE_UNLOAD is defined */
  85
  86 LTTNG_TRACEPOINT_EVENT_CLASS(module_refcnt,
  87
  88         TP_PROTO(struct module *mod, unsigned long ip),
  89
  90         TP_ARGS(mod, ip),
  91
  92         TP_FIELDS(
  93                 ctf_integer_hex(unsigned long, ip, ip)
  94                 ctf_integer(int, refcnt, atomic_read(&mod->refcnt))
  95                 ctf_string(name, mod->name)
  96         )
  97 )
  98
  99 LTTNG_TRACEPOINT_EVENT_INSTANCE(module_refcnt, module_get,
 100
 101         TP_PROTO(struct module *mod, unsigned long ip),
 102
 103         TP_ARGS(mod, ip)
 104 )
 105
 106 LTTNG_TRACEPOINT_EVENT_INSTANCE(module_refcnt, module_put,
 107
 108         TP_PROTO(struct module *mod, unsigned long ip),
 109
 110         TP_ARGS(mod, ip)
 111 )
 112 #endif /* CONFIG_MODULE_UNLOAD */
 113
 114 LTTNG_TRACEPOINT_EVENT(module_request,
 115
 116         TP_PROTO(char *name, bool wait, unsigned long ip),
 117
 118         TP_ARGS(name, wait, ip),
 119
 120         TP_FIELDS(
 121                 ctf_integer_hex(unsigned long, ip, ip)
 122                 ctf_integer(bool, wait, wait)
 123                 ctf_string(name, name)
 124         )
 125 )
 126
 127 #endif /* CONFIG_MODULES */
 128
 129 #endif /* LTTNG_TRACE_MODULE_H */
 130
 131 /* This part must be outside protection */
 132 #include <lttng/define_trace.h>