| 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
| 2 | /* |
| 3 | * Because linux/module.h has tracepoints in the header, and ftrace.h |
| 4 | * eventually includes this file, define_trace.h includes linux/module.h |
| 5 | * But we do not want the module.h to override the TRACE_SYSTEM macro |
| 6 | * variable that define_trace.h is processing, so we only set it |
| 7 | * when module events are being processed, which would happen when |
| 8 | * CREATE_TRACE_POINTS is defined. |
| 9 | */ |
| 10 | #ifdef CREATE_TRACE_POINTS |
| 11 | #undef TRACE_SYSTEM |
| 12 | #define TRACE_SYSTEM module |
| 13 | #endif |
| 14 | |
| 15 | #if !defined(LTTNG_TRACE_MODULE_H) || defined(TRACE_HEADER_MULTI_READ) |
| 16 | #define LTTNG_TRACE_MODULE_H |
| 17 | |
| 18 | #include <probes/lttng-tracepoint-event.h> |
| 19 | #include <linux/version.h> |
| 20 | |
| 21 | #ifdef CONFIG_MODULES |
| 22 | |
| 23 | #ifndef _TRACE_MODULE_DEF |
| 24 | #define _TRACE_MODULE_DEF |
| 25 | struct module; |
| 26 | |
| 27 | #endif |
| 28 | |
| 29 | LTTNG_TRACEPOINT_EVENT(module_load, |
| 30 | |
| 31 | TP_PROTO(struct module *mod), |
| 32 | |
| 33 | TP_ARGS(mod), |
| 34 | |
| 35 | TP_FIELDS( |
| 36 | ctf_integer(unsigned int, taints, mod->taints) |
| 37 | ctf_string(name, mod->name) |
| 38 | ) |
| 39 | ) |
| 40 | |
| 41 | LTTNG_TRACEPOINT_EVENT(module_free, |
| 42 | |
| 43 | TP_PROTO(struct module *mod), |
| 44 | |
| 45 | TP_ARGS(mod), |
| 46 | |
| 47 | TP_FIELDS( |
| 48 | ctf_string(name, mod->name) |
| 49 | ) |
| 50 | ) |
| 51 | |
| 52 | #ifdef CONFIG_MODULE_UNLOAD |
| 53 | /* trace_module_get/put are only used if CONFIG_MODULE_UNLOAD is defined */ |
| 54 | |
| 55 | LTTNG_TRACEPOINT_EVENT_CLASS(module_refcnt, |
| 56 | |
| 57 | TP_PROTO(struct module *mod, unsigned long ip), |
| 58 | |
| 59 | TP_ARGS(mod, ip), |
| 60 | |
| 61 | TP_FIELDS( |
| 62 | ctf_integer_hex(unsigned long, ip, ip) |
| 63 | #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,19,0)) |
| 64 | ctf_integer(int, refcnt, atomic_read(&mod->refcnt)) |
| 65 | #else |
| 66 | ctf_integer(int, refcnt, __this_cpu_read(mod->refptr->incs) + __this_cpu_read(mod->refptr->decs)) |
| 67 | #endif |
| 68 | ctf_string(name, mod->name) |
| 69 | ) |
| 70 | ) |
| 71 | |
| 72 | LTTNG_TRACEPOINT_EVENT_INSTANCE(module_refcnt, module_get, |
| 73 | |
| 74 | TP_PROTO(struct module *mod, unsigned long ip), |
| 75 | |
| 76 | TP_ARGS(mod, ip) |
| 77 | ) |
| 78 | |
| 79 | LTTNG_TRACEPOINT_EVENT_INSTANCE(module_refcnt, module_put, |
| 80 | |
| 81 | TP_PROTO(struct module *mod, unsigned long ip), |
| 82 | |
| 83 | TP_ARGS(mod, ip) |
| 84 | ) |
| 85 | #endif /* CONFIG_MODULE_UNLOAD */ |
| 86 | |
| 87 | LTTNG_TRACEPOINT_EVENT(module_request, |
| 88 | |
| 89 | TP_PROTO(char *name, bool wait, unsigned long ip), |
| 90 | |
| 91 | TP_ARGS(name, wait, ip), |
| 92 | |
| 93 | TP_FIELDS( |
| 94 | ctf_integer_hex(unsigned long, ip, ip) |
| 95 | ctf_integer(bool, wait, wait) |
| 96 | ctf_string(name, name) |
| 97 | ) |
| 98 | ) |
| 99 | |
| 100 | #endif /* CONFIG_MODULES */ |
| 101 | |
| 102 | #endif /* LTTNG_TRACE_MODULE_H */ |
| 103 | |
| 104 | /* This part must be outside protection */ |
| 105 | #include <probes/define_trace.h> |