2f35c41f58
Replace module_ref per-cpu complex reference counter with an atomic_t simple refcnt. This is for code simplification. Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
133 lines
2.7 KiB
C
133 lines
2.7 KiB
C
/*
|
|
* Because linux/module.h has tracepoints in the header, and ftrace.h
|
|
* used to include this file, define_trace.h includes linux/module.h
|
|
* But we do not want the module.h to override the TRACE_SYSTEM macro
|
|
* variable that define_trace.h is processing, so we only set it
|
|
* when module events are being processed, which would happen when
|
|
* CREATE_TRACE_POINTS is defined.
|
|
*/
|
|
#ifdef CREATE_TRACE_POINTS
|
|
#undef TRACE_SYSTEM
|
|
#define TRACE_SYSTEM module
|
|
#endif
|
|
|
|
#if !defined(_TRACE_MODULE_H) || defined(TRACE_HEADER_MULTI_READ)
|
|
#define _TRACE_MODULE_H
|
|
|
|
#include <linux/tracepoint.h>
|
|
|
|
#ifdef CONFIG_MODULES
|
|
|
|
struct module;
|
|
|
|
#define show_module_flags(flags) __print_flags(flags, "", \
|
|
{ (1UL << TAINT_PROPRIETARY_MODULE), "P" }, \
|
|
{ (1UL << TAINT_OOT_MODULE), "O" }, \
|
|
{ (1UL << TAINT_FORCED_MODULE), "F" }, \
|
|
{ (1UL << TAINT_CRAP), "C" }, \
|
|
{ (1UL << TAINT_UNSIGNED_MODULE), "E" })
|
|
|
|
TRACE_EVENT(module_load,
|
|
|
|
TP_PROTO(struct module *mod),
|
|
|
|
TP_ARGS(mod),
|
|
|
|
TP_STRUCT__entry(
|
|
__field( unsigned int, taints )
|
|
__string( name, mod->name )
|
|
),
|
|
|
|
TP_fast_assign(
|
|
__entry->taints = mod->taints;
|
|
__assign_str(name, mod->name);
|
|
),
|
|
|
|
TP_printk("%s %s", __get_str(name), show_module_flags(__entry->taints))
|
|
);
|
|
|
|
TRACE_EVENT(module_free,
|
|
|
|
TP_PROTO(struct module *mod),
|
|
|
|
TP_ARGS(mod),
|
|
|
|
TP_STRUCT__entry(
|
|
__string( name, mod->name )
|
|
),
|
|
|
|
TP_fast_assign(
|
|
__assign_str(name, mod->name);
|
|
),
|
|
|
|
TP_printk("%s", __get_str(name))
|
|
);
|
|
|
|
#ifdef CONFIG_MODULE_UNLOAD
|
|
/* trace_module_get/put are only used if CONFIG_MODULE_UNLOAD is defined */
|
|
|
|
DECLARE_EVENT_CLASS(module_refcnt,
|
|
|
|
TP_PROTO(struct module *mod, unsigned long ip),
|
|
|
|
TP_ARGS(mod, ip),
|
|
|
|
TP_STRUCT__entry(
|
|
__field( unsigned long, ip )
|
|
__field( int, refcnt )
|
|
__string( name, mod->name )
|
|
),
|
|
|
|
TP_fast_assign(
|
|
__entry->ip = ip;
|
|
__entry->refcnt = atomic_read(&mod->refcnt);
|
|
__assign_str(name, mod->name);
|
|
),
|
|
|
|
TP_printk("%s call_site=%pf refcnt=%d",
|
|
__get_str(name), (void *)__entry->ip, __entry->refcnt)
|
|
);
|
|
|
|
DEFINE_EVENT(module_refcnt, module_get,
|
|
|
|
TP_PROTO(struct module *mod, unsigned long ip),
|
|
|
|
TP_ARGS(mod, ip)
|
|
);
|
|
|
|
DEFINE_EVENT(module_refcnt, module_put,
|
|
|
|
TP_PROTO(struct module *mod, unsigned long ip),
|
|
|
|
TP_ARGS(mod, ip)
|
|
);
|
|
#endif /* CONFIG_MODULE_UNLOAD */
|
|
|
|
TRACE_EVENT(module_request,
|
|
|
|
TP_PROTO(char *name, bool wait, unsigned long ip),
|
|
|
|
TP_ARGS(name, wait, ip),
|
|
|
|
TP_STRUCT__entry(
|
|
__field( unsigned long, ip )
|
|
__field( bool, wait )
|
|
__string( name, name )
|
|
),
|
|
|
|
TP_fast_assign(
|
|
__entry->ip = ip;
|
|
__entry->wait = wait;
|
|
__assign_str(name, name);
|
|
),
|
|
|
|
TP_printk("%s wait=%d call_site=%pf",
|
|
__get_str(name), (int)__entry->wait, (void *)__entry->ip)
|
|
);
|
|
|
|
#endif /* CONFIG_MODULES */
|
|
|
|
#endif /* _TRACE_MODULE_H */
|
|
|
|
/* This part must be outside protection */
|
|
#include <trace/define_trace.h>
|