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-rw-r--r--include/trace/ftrace.h259
1 files changed, 67 insertions, 192 deletions
diff --git a/include/trace/ftrace.h b/include/trace/ftrace.h
index c6fe03e902c..601ad774424 100644
--- a/include/trace/ftrace.h
+++ b/include/trace/ftrace.h
@@ -65,7 +65,8 @@
};
#undef DEFINE_EVENT
#define DEFINE_EVENT(template, name, proto, args) \
- static struct ftrace_event_call event_##name
+ static struct ftrace_event_call \
+ __attribute__((__aligned__(4))) event_##name
#undef DEFINE_EVENT_PRINT
#define DEFINE_EVENT_PRINT(template, name, proto, args, print) \
@@ -131,130 +132,6 @@
#include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
/*
- * Setup the showing format of trace point.
- *
- * int
- * ftrace_format_##call(struct trace_seq *s)
- * {
- * struct ftrace_raw_##call field;
- * int ret;
- *
- * ret = trace_seq_printf(s, #type " " #item ";"
- * " offset:%u; size:%u;\n",
- * offsetof(struct ftrace_raw_##call, item),
- * sizeof(field.type));
- *
- * }
- */
-
-#undef TP_STRUCT__entry
-#define TP_STRUCT__entry(args...) args
-
-#undef __field
-#define __field(type, item) \
- ret = trace_seq_printf(s, "\tfield:" #type " " #item ";\t" \
- "offset:%u;\tsize:%u;\tsigned:%u;\n", \
- (unsigned int)offsetof(typeof(field), item), \
- (unsigned int)sizeof(field.item), \
- (unsigned int)is_signed_type(type)); \
- if (!ret) \
- return 0;
-
-#undef __field_ext
-#define __field_ext(type, item, filter_type) __field(type, item)
-
-#undef __array
-#define __array(type, item, len) \
- ret = trace_seq_printf(s, "\tfield:" #type " " #item "[" #len "];\t" \
- "offset:%u;\tsize:%u;\tsigned:%u;\n", \
- (unsigned int)offsetof(typeof(field), item), \
- (unsigned int)sizeof(field.item), \
- (unsigned int)is_signed_type(type)); \
- if (!ret) \
- return 0;
-
-#undef __dynamic_array
-#define __dynamic_array(type, item, len) \
- ret = trace_seq_printf(s, "\tfield:__data_loc " #type "[] " #item ";\t"\
- "offset:%u;\tsize:%u;\tsigned:%u;\n", \
- (unsigned int)offsetof(typeof(field), \
- __data_loc_##item), \
- (unsigned int)sizeof(field.__data_loc_##item), \
- (unsigned int)is_signed_type(type)); \
- if (!ret) \
- return 0;
-
-#undef __string
-#define __string(item, src) __dynamic_array(char, item, -1)
-
-#undef __entry
-#define __entry REC
-
-#undef __print_symbolic
-#undef __get_dynamic_array
-#undef __get_str
-
-#undef TP_printk
-#define TP_printk(fmt, args...) "\"%s\", %s\n", fmt, __stringify(args)
-
-#undef TP_fast_assign
-#define TP_fast_assign(args...) args
-
-#undef TP_perf_assign
-#define TP_perf_assign(args...)
-
-#undef DECLARE_EVENT_CLASS
-#define DECLARE_EVENT_CLASS(call, proto, args, tstruct, func, print) \
-static int \
-ftrace_format_setup_##call(struct ftrace_event_call *unused, \
- struct trace_seq *s) \
-{ \
- struct ftrace_raw_##call field __attribute__((unused)); \
- int ret = 0; \
- \
- tstruct; \
- \
- return ret; \
-} \
- \
-static int \
-ftrace_format_##call(struct ftrace_event_call *unused, \
- struct trace_seq *s) \
-{ \
- int ret = 0; \
- \
- ret = ftrace_format_setup_##call(unused, s); \
- if (!ret) \
- return ret; \
- \
- ret = trace_seq_printf(s, "\nprint fmt: " print); \
- \
- return ret; \
-}
-
-#undef DEFINE_EVENT
-#define DEFINE_EVENT(template, name, proto, args)
-
-#undef DEFINE_EVENT_PRINT
-#define DEFINE_EVENT_PRINT(template, name, proto, args, print) \
-static int \
-ftrace_format_##name(struct ftrace_event_call *unused, \
- struct trace_seq *s) \
-{ \
- int ret = 0; \
- \
- ret = ftrace_format_setup_##template(unused, s); \
- if (!ret) \
- return ret; \
- \
- trace_seq_printf(s, "\nprint fmt: " print); \
- \
- return ret; \
-}
-
-#include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
-
-/*
* Stage 3 of the trace events.
*
* Override the macros in <trace/trace_events.h> to include the following:
@@ -323,7 +200,7 @@ ftrace_format_##name(struct ftrace_event_call *unused, \
#undef DECLARE_EVENT_CLASS
#define DECLARE_EVENT_CLASS(call, proto, args, tstruct, assign, print) \
-static enum print_line_t \
+static notrace enum print_line_t \
ftrace_raw_output_id_##call(int event_id, const char *name, \
struct trace_iterator *iter, int flags) \
{ \
@@ -356,7 +233,7 @@ ftrace_raw_output_id_##call(int event_id, const char *name, \
#undef DEFINE_EVENT
#define DEFINE_EVENT(template, name, proto, args) \
-static enum print_line_t \
+static notrace enum print_line_t \
ftrace_raw_output_##name(struct trace_iterator *iter, int flags) \
{ \
return ftrace_raw_output_id_##template(event_##name.id, \
@@ -365,7 +242,7 @@ ftrace_raw_output_##name(struct trace_iterator *iter, int flags) \
#undef DEFINE_EVENT_PRINT
#define DEFINE_EVENT_PRINT(template, call, proto, args, print) \
-static enum print_line_t \
+static notrace enum print_line_t \
ftrace_raw_output_##call(struct trace_iterator *iter, int flags) \
{ \
struct trace_seq *s = &iter->seq; \
@@ -431,7 +308,7 @@ ftrace_raw_output_##call(struct trace_iterator *iter, int flags) \
#undef DECLARE_EVENT_CLASS
#define DECLARE_EVENT_CLASS(call, proto, args, tstruct, func, print) \
-static int \
+static int notrace \
ftrace_define_fields_##call(struct ftrace_event_call *event_call) \
{ \
struct ftrace_raw_##call field; \
@@ -479,7 +356,7 @@ ftrace_define_fields_##call(struct ftrace_event_call *event_call) \
#undef DECLARE_EVENT_CLASS
#define DECLARE_EVENT_CLASS(call, proto, args, tstruct, assign, print) \
-static inline int ftrace_get_offsets_##call( \
+static inline notrace int ftrace_get_offsets_##call( \
struct ftrace_data_offsets_##call *__data_offsets, proto) \
{ \
int __data_size = 0; \
@@ -499,7 +376,7 @@ static inline int ftrace_get_offsets_##call( \
#include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
-#ifdef CONFIG_EVENT_PROFILE
+#ifdef CONFIG_PERF_EVENTS
/*
* Generate the functions needed for tracepoint perf_event support.
@@ -526,12 +403,14 @@ static inline int ftrace_get_offsets_##call( \
\
static void ftrace_profile_##name(proto); \
\
-static int ftrace_profile_enable_##name(struct ftrace_event_call *unused)\
+static notrace int \
+ftrace_profile_enable_##name(struct ftrace_event_call *unused) \
{ \
return register_trace_##name(ftrace_profile_##name); \
} \
\
-static void ftrace_profile_disable_##name(struct ftrace_event_call *unused)\
+static notrace void \
+ftrace_profile_disable_##name(struct ftrace_event_call *unused) \
{ \
unregister_trace_##name(ftrace_profile_##name); \
}
@@ -542,7 +421,7 @@ static void ftrace_profile_disable_##name(struct ftrace_event_call *unused)\
#include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
-#endif
+#endif /* CONFIG_PERF_EVENTS */
/*
* Stage 4 of the trace events.
@@ -622,12 +501,11 @@ static void ftrace_profile_disable_##name(struct ftrace_event_call *unused)\
* .raw_init = trace_event_raw_init,
* .regfunc = ftrace_reg_event_<call>,
* .unregfunc = ftrace_unreg_event_<call>,
- * .show_format = ftrace_format_<call>,
* }
*
*/
-#ifdef CONFIG_EVENT_PROFILE
+#ifdef CONFIG_PERF_EVENTS
#define _TRACE_PROFILE_INIT(call) \
.profile_enable = ftrace_profile_enable_##call, \
@@ -635,7 +513,7 @@ static void ftrace_profile_disable_##name(struct ftrace_event_call *unused)\
#else
#define _TRACE_PROFILE_INIT(call)
-#endif
+#endif /* CONFIG_PERF_EVENTS */
#undef __entry
#define __entry entry
@@ -657,10 +535,17 @@ static void ftrace_profile_disable_##name(struct ftrace_event_call *unused)\
#define __assign_str(dst, src) \
strcpy(__get_str(dst), src);
+#undef TP_fast_assign
+#define TP_fast_assign(args...) args
+
+#undef TP_perf_assign
+#define TP_perf_assign(args...)
+
#undef DECLARE_EVENT_CLASS
#define DECLARE_EVENT_CLASS(call, proto, args, tstruct, assign, print) \
\
-static void ftrace_raw_event_id_##call(struct ftrace_event_call *event_call, \
+static notrace void \
+ftrace_raw_event_id_##call(struct ftrace_event_call *event_call, \
proto) \
{ \
struct ftrace_data_offsets_##call __maybe_unused __data_offsets;\
@@ -697,17 +582,19 @@ static void ftrace_raw_event_id_##call(struct ftrace_event_call *event_call, \
#undef DEFINE_EVENT
#define DEFINE_EVENT(template, call, proto, args) \
\
-static void ftrace_raw_event_##call(proto) \
+static notrace void ftrace_raw_event_##call(proto) \
{ \
ftrace_raw_event_id_##template(&event_##call, args); \
} \
\
-static int ftrace_raw_reg_event_##call(struct ftrace_event_call *unused)\
+static notrace int \
+ftrace_raw_reg_event_##call(struct ftrace_event_call *unused) \
{ \
return register_trace_##call(ftrace_raw_event_##call); \
} \
\
-static void ftrace_raw_unreg_event_##call(struct ftrace_event_call *unused)\
+static notrace void \
+ftrace_raw_unreg_event_##call(struct ftrace_event_call *unused) \
{ \
unregister_trace_##call(ftrace_raw_event_##call); \
} \
@@ -722,8 +609,20 @@ static struct trace_event ftrace_event_type_##call = { \
#include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
+#undef __entry
+#define __entry REC
+
+#undef __print_flags
+#undef __print_symbolic
+#undef __get_dynamic_array
+#undef __get_str
+
+#undef TP_printk
+#define TP_printk(fmt, args...) "\"" fmt "\", " __stringify(args)
+
#undef DECLARE_EVENT_CLASS
-#define DECLARE_EVENT_CLASS(call, proto, args, tstruct, assign, print)
+#define DECLARE_EVENT_CLASS(call, proto, args, tstruct, assign, print) \
+static const char print_fmt_##call[] = print;
#undef DEFINE_EVENT
#define DEFINE_EVENT(template, call, proto, args) \
@@ -737,7 +636,7 @@ __attribute__((section("_ftrace_events"))) event_##call = { \
.raw_init = trace_event_raw_init, \
.regfunc = ftrace_raw_reg_event_##call, \
.unregfunc = ftrace_raw_unreg_event_##call, \
- .show_format = ftrace_format_##template, \
+ .print_fmt = print_fmt_##template, \
.define_fields = ftrace_define_fields_##template, \
_TRACE_PROFILE_INIT(call) \
}
@@ -745,6 +644,8 @@ __attribute__((section("_ftrace_events"))) event_##call = { \
#undef DEFINE_EVENT_PRINT
#define DEFINE_EVENT_PRINT(template, call, proto, args, print) \
\
+static const char print_fmt_##call[] = print; \
+ \
static struct ftrace_event_call __used \
__attribute__((__aligned__(4))) \
__attribute__((section("_ftrace_events"))) event_##call = { \
@@ -754,7 +655,7 @@ __attribute__((section("_ftrace_events"))) event_##call = { \
.raw_init = trace_event_raw_init, \
.regfunc = ftrace_raw_reg_event_##call, \
.unregfunc = ftrace_raw_unreg_event_##call, \
- .show_format = ftrace_format_##call, \
+ .print_fmt = print_fmt_##call, \
.define_fields = ftrace_define_fields_##template, \
_TRACE_PROFILE_INIT(call) \
}
@@ -798,9 +699,9 @@ __attribute__((section("_ftrace_events"))) event_##call = { \
* __cpu = smp_processor_id();
*
* if (in_nmi())
- * trace_buf = rcu_dereference(perf_trace_buf_nmi);
+ * trace_buf = rcu_dereference_sched(perf_trace_buf_nmi);
* else
- * trace_buf = rcu_dereference(perf_trace_buf);
+ * trace_buf = rcu_dereference_sched(perf_trace_buf);
*
* if (!trace_buf)
* goto end;
@@ -835,7 +736,17 @@ __attribute__((section("_ftrace_events"))) event_##call = { \
* }
*/
-#ifdef CONFIG_EVENT_PROFILE
+#ifdef CONFIG_PERF_EVENTS
+
+#undef __entry
+#define __entry entry
+
+#undef __get_dynamic_array
+#define __get_dynamic_array(field) \
+ ((void *)__entry + (__entry->__data_loc_##field & 0xffff))
+
+#undef __get_str
+#define __get_str(field) (char *)__get_dynamic_array(field)
#undef __perf_addr
#define __perf_addr(a) __addr = (a)
@@ -845,27 +756,17 @@ __attribute__((section("_ftrace_events"))) event_##call = { \
#undef DECLARE_EVENT_CLASS
#define DECLARE_EVENT_CLASS(call, proto, args, tstruct, assign, print) \
-static void \
+static notrace void \
ftrace_profile_templ_##call(struct ftrace_event_call *event_call, \
proto) \
{ \
struct ftrace_data_offsets_##call __maybe_unused __data_offsets;\
- extern int perf_swevent_get_recursion_context(void); \
- extern void perf_swevent_put_recursion_context(int rctx); \
- extern void perf_tp_event(int, u64, u64, void *, int); \
struct ftrace_raw_##call *entry; \
u64 __addr = 0, __count = 1; \
unsigned long irq_flags; \
- struct trace_entry *ent; \
int __entry_size; \
int __data_size; \
- char *trace_buf; \
- char *raw_data; \
- int __cpu; \
int rctx; \
- int pc; \
- \
- pc = preempt_count(); \
\
__data_size = ftrace_get_offsets_##call(&__data_offsets, args); \
__entry_size = ALIGN(__data_size + sizeof(*entry) + sizeof(u32),\
@@ -875,47 +776,21 @@ ftrace_profile_templ_##call(struct ftrace_event_call *event_call, \
if (WARN_ONCE(__entry_size > FTRACE_MAX_PROFILE_SIZE, \
"profile buffer not large enough")) \
return; \
- \
- local_irq_save(irq_flags); \
- \
- rctx = perf_swevent_get_recursion_context(); \
- if (rctx < 0) \
- goto end_recursion; \
- \
- __cpu = smp_processor_id(); \
- \
- if (in_nmi()) \
- trace_buf = rcu_dereference(perf_trace_buf_nmi); \
- else \
- trace_buf = rcu_dereference(perf_trace_buf); \
- \
- if (!trace_buf) \
- goto end; \
- \
- raw_data = per_cpu_ptr(trace_buf, __cpu); \
- \
- *(u64 *)(&raw_data[__entry_size - sizeof(u64)]) = 0ULL; \
- entry = (struct ftrace_raw_##call *)raw_data; \
- ent = &entry->ent; \
- tracing_generic_entry_update(ent, irq_flags, pc); \
- ent->type = event_call->id; \
- \
+ entry = (struct ftrace_raw_##call *)ftrace_perf_buf_prepare( \
+ __entry_size, event_call->id, &rctx, &irq_flags); \
+ if (!entry) \
+ return; \
tstruct \
\
{ assign; } \
\
- perf_tp_event(event_call->id, __addr, __count, entry, \
- __entry_size); \
- \
-end: \
- perf_swevent_put_recursion_context(rctx); \
-end_recursion: \
- local_irq_restore(irq_flags); \
+ ftrace_perf_buf_submit(entry, __entry_size, rctx, __addr, \
+ __count, irq_flags); \
}
#undef DEFINE_EVENT
#define DEFINE_EVENT(template, call, proto, args) \
-static void ftrace_profile_##call(proto) \
+static notrace void ftrace_profile_##call(proto) \
{ \
struct ftrace_event_call *event_call = &event_##call; \
\
@@ -927,7 +802,7 @@ static void ftrace_profile_##call(proto) \
DEFINE_EVENT(template, name, PARAMS(proto), PARAMS(args))
#include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
-#endif /* CONFIG_EVENT_PROFILE */
+#endif /* CONFIG_PERF_EVENTS */
#undef _TRACE_PROFILE_INIT
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-12-27 17:41:38 +0000