tracing: use the new trace_entries.h to create format files
This patch changes the way the format files in debugfs/tracing/events/ftrace/*/format are created. It uses the new trace_entries.h file to automate the creation of the format files to ensure that they are always in sync with the actual structures. This is the same methodology used to create the format files for the TRACE_EVENT macro. This also updates the filter creation that was built on the creation of the format files. Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
This commit is contained in:
Steven Rostedt
Steven Rostedt
parent
d73150943c
commit
4e5292ea1a
3 changed files with 138 additions and 120 deletions
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@ -7,6 +7,7 @@
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#include <linux/clocksource.h>
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#include <linux/ring_buffer.h>
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#include <linux/mmiotrace.h>
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#include <linux/tracepoint.h>
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#include <linux/ftrace.h>
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#include <trace/boot.h>
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#include <linux/kmemtrace.h>
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@ -746,11 +747,12 @@ extern struct list_head ftrace_events;
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extern const char *__start___trace_bprintk_fmt[];
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extern const char *__stop___trace_bprintk_fmt[];
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#undef TRACE_EVENT_FORMAT
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#define TRACE_EVENT_FORMAT(call, proto, args, fmt, tstruct, tpfmt) \
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#undef FTRACE_ENTRY
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#define FTRACE_ENTRY(call, struct_name, id, tstruct, print) \
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extern struct ftrace_event_call event_##call;
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#undef TRACE_EVENT_FORMAT_NOFILTER
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#define TRACE_EVENT_FORMAT_NOFILTER(call, proto, args, fmt, tstruct, tpfmt)
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#include "trace_event_types.h"
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#undef FTRACE_ENTRY_DUP
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#define FTRACE_ENTRY_DUP(call, struct_name, id, tstruct, print) \
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FTRACE_ENTRY(call, struct_name, id, PARAMS(tstruct), PARAMS(print))
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#include "trace_entries.h"
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#endif /* _LINUX_KERNEL_TRACE_H */
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@ -21,6 +21,7 @@
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#include "trace_output.h"
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#undef TRACE_SYSTEM
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#define TRACE_SYSTEM "TRACE_SYSTEM"
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DEFINE_MUTEX(event_mutex);
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@ -15,82 +15,163 @@
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#include "trace_output.h"
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#undef TRACE_SYSTEM
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#define TRACE_SYSTEM ftrace
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#undef TRACE_STRUCT
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#define TRACE_STRUCT(args...) args
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/* not needed for this file */
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#undef __field_struct
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#define __field_struct(type, item)
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extern void __bad_type_size(void);
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#undef TRACE_FIELD
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#define TRACE_FIELD(type, item, assign) \
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if (sizeof(type) != sizeof(field.item)) \
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__bad_type_size(); \
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#undef __field
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#define __field(type, item) \
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ret = trace_seq_printf(s, "\tfield:" #type " " #item ";\t" \
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"offset:%u;\tsize:%u;\n", \
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(unsigned int)offsetof(typeof(field), item), \
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(unsigned int)sizeof(field.item)); \
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"offset:%zu;\tsize:%zu;\n", \
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offsetof(typeof(field), item), \
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sizeof(field.item)); \
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if (!ret) \
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return 0;
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#undef TRACE_FIELD_SPECIAL
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#define TRACE_FIELD_SPECIAL(type_item, item, len, cmd) \
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ret = trace_seq_printf(s, "\tfield special:" #type_item ";\t" \
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"offset:%u;\tsize:%u;\n", \
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(unsigned int)offsetof(typeof(field), item), \
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(unsigned int)sizeof(field.item)); \
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#undef __field_desc
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#define __field_desc(type, container, item) \
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ret = trace_seq_printf(s, "\tfield:" #type " " #item ";\t" \
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"offset:%zu;\tsize:%zu;\n", \
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offsetof(typeof(field), container.item), \
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sizeof(field.container.item)); \
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if (!ret) \
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return 0;
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#undef TRACE_FIELD_ZERO_CHAR
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#define TRACE_FIELD_ZERO_CHAR(item) \
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ret = trace_seq_printf(s, "\tfield:char " #item ";\t" \
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"offset:%u;\tsize:0;\n", \
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(unsigned int)offsetof(typeof(field), item)); \
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#undef __array
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#define __array(type, item, len) \
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ret = trace_seq_printf(s, "\tfield:" #type " " #item "[" #len "];\t" \
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"offset:%zu;\tsize:%zu;\n", \
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offsetof(typeof(field), item), \
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sizeof(field.item)); \
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if (!ret) \
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return 0;
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#undef TRACE_FIELD_SIGN
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#define TRACE_FIELD_SIGN(type, item, assign, is_signed) \
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TRACE_FIELD(type, item, assign)
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#undef __array_desc
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#define __array_desc(type, container, item, len) \
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ret = trace_seq_printf(s, "\tfield:" #type " " #item "[" #len "];\t" \
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"offset:%zu;\tsize:%zu;\n", \
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offsetof(typeof(field), container.item), \
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sizeof(field.container.item)); \
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if (!ret) \
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return 0;
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#undef TP_RAW_FMT
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#define TP_RAW_FMT(args...) args
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#undef __dynamic_array
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#define __dynamic_array(type, item) \
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ret = trace_seq_printf(s, "\tfield:" #type " " #item ";\t" \
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"offset:%zu;\tsize:0;\n", \
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offsetof(typeof(field), item)); \
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if (!ret) \
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return 0;
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#undef TRACE_EVENT_FORMAT
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#define TRACE_EVENT_FORMAT(call, proto, args, fmt, tstruct, tpfmt) \
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#undef F_printk
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#define F_printk(fmt, args...) "%s, %s\n", #fmt, __stringify(args)
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#undef __entry
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#define __entry REC
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#undef FTRACE_ENTRY
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#define FTRACE_ENTRY(name, struct_name, id, tstruct, print) \
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static int \
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ftrace_format_##call(struct ftrace_event_call *unused, \
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struct trace_seq *s) \
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ftrace_format_##name(struct ftrace_event_call *unused, \
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struct trace_seq *s) \
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{ \
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struct args field; \
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int ret; \
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struct struct_name field __attribute__((unused)); \
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int ret = 0; \
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\
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tstruct; \
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\
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trace_seq_printf(s, "\nprint fmt: \"%s\"\n", tpfmt); \
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trace_seq_printf(s, "\nprint fmt: " print); \
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\
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return ret; \
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}
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#undef TRACE_EVENT_FORMAT_NOFILTER
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#define TRACE_EVENT_FORMAT_NOFILTER(call, proto, args, fmt, tstruct, \
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tpfmt) \
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static int \
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ftrace_format_##call(struct ftrace_event_call *unused, \
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struct trace_seq *s) \
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#undef FTRACE_ENTRY_DUP
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#define FTRACE_ENTRY_DUP(name, struct_name, id, tstruct, print) \
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FTRACE_ENTRY(name, struct_name, id, PARAMS(tstruct), PARAMS(print))
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#include "trace_entries.h"
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#undef __field
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#define __field(type, item) \
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ret = trace_define_field(event_call, #type, #item, \
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offsetof(typeof(field), item), \
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sizeof(field.item), \
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is_signed_type(type), FILTER_OTHER); \
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if (ret) \
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return ret;
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#undef __field_desc
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#define __field_desc(type, container, item) \
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ret = trace_define_field(event_call, #type, #item, \
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offsetof(typeof(field), \
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container.item), \
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sizeof(field.container.item), \
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is_signed_type(type), FILTER_OTHER); \
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if (ret) \
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return ret;
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#undef __array
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#define __array(type, item, len) \
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BUILD_BUG_ON(len > MAX_FILTER_STR_VAL); \
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ret = trace_define_field(event_call, #type "[" #len "]", #item, \
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offsetof(typeof(field), item), \
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sizeof(field.item), 0, FILTER_OTHER); \
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if (ret) \
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return ret;
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#undef __array_desc
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#define __array_desc(type, container, item, len) \
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BUILD_BUG_ON(len > MAX_FILTER_STR_VAL); \
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ret = trace_define_field(event_call, #type "[" #len "]", #item, \
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offsetof(typeof(field), \
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container.item), \
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sizeof(field.container.item), 0, \
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FILTER_OTHER); \
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if (ret) \
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return ret;
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#undef __dynamic_array
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#define __dynamic_array(type, item)
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#undef FTRACE_ENTRY
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#define FTRACE_ENTRY(name, struct_name, id, tstruct, print) \
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int \
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ftrace_define_fields_##name(struct ftrace_event_call *event_call) \
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{ \
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struct args field; \
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struct struct_name field; \
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int ret; \
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\
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tstruct; \
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ret = trace_define_common_fields(event_call); \
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if (ret) \
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return ret; \
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\
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trace_seq_printf(s, "\nprint fmt: \"%s\"\n", tpfmt); \
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tstruct; \
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\
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return ret; \
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}
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#include "trace_event_types.h"
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#include "trace_entries.h"
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#undef __field
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#define __field(type, item)
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#undef __field_desc
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#define __field_desc(type, container, item)
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#undef __array
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#define __array(type, item, len)
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#undef __array_desc
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#define __array_desc(type, container, item, len)
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#undef __dynamic_array
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#define __dynamic_array(type, item)
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#undef TRACE_ZERO_CHAR
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#define TRACE_ZERO_CHAR(arg)
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@ -117,16 +198,15 @@ ftrace_format_##call(struct ftrace_event_call *unused, \
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#define TRACE_FIELD_SPECIAL(type_item, item, len, cmd) \
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cmd;
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#undef TRACE_EVENT_FORMAT
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#define TRACE_EVENT_FORMAT(call, proto, args, fmt, tstruct, tpfmt) \
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int ftrace_define_fields_##call(struct ftrace_event_call *event_call); \
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#undef FTRACE_ENTRY
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#define FTRACE_ENTRY(call, struct_name, type, tstruct, print) \
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static int ftrace_raw_init_event_##call(void); \
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\
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struct ftrace_event_call __used \
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__attribute__((__aligned__(4))) \
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__attribute__((section("_ftrace_events"))) event_##call = { \
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.name = #call, \
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.id = proto, \
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.id = type, \
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.system = __stringify(TRACE_SYSTEM), \
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.raw_init = ftrace_raw_init_event_##call, \
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.show_format = ftrace_format_##call, \
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@ -138,69 +218,4 @@ static int ftrace_raw_init_event_##call(void) \
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return 0; \
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} \
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#undef TRACE_EVENT_FORMAT_NOFILTER
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#define TRACE_EVENT_FORMAT_NOFILTER(call, proto, args, fmt, tstruct, \
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tpfmt) \
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\
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struct ftrace_event_call __used \
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__attribute__((__aligned__(4))) \
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__attribute__((section("_ftrace_events"))) event_##call = { \
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.name = #call, \
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.id = proto, \
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.system = __stringify(TRACE_SYSTEM), \
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.show_format = ftrace_format_##call, \
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};
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#include "trace_event_types.h"
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#undef TRACE_FIELD
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#define TRACE_FIELD(type, item, assign) \
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ret = trace_define_field(event_call, #type, #item, \
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offsetof(typeof(field), item), \
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sizeof(field.item), \
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is_signed_type(type), FILTER_OTHER); \
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if (ret) \
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return ret;
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#undef TRACE_FIELD_SPECIAL
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#define TRACE_FIELD_SPECIAL(type, item, len, cmd) \
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ret = trace_define_field(event_call, #type "[" #len "]", #item, \
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offsetof(typeof(field), item), \
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sizeof(field.item), 0, FILTER_OTHER); \
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if (ret) \
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return ret;
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#undef TRACE_FIELD_SIGN
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#define TRACE_FIELD_SIGN(type, item, assign, is_signed) \
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ret = trace_define_field(event_call, #type, #item, \
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offsetof(typeof(field), item), \
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sizeof(field.item), is_signed, \
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FILTER_OTHER); \
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if (ret) \
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return ret;
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#undef TRACE_FIELD_ZERO_CHAR
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#define TRACE_FIELD_ZERO_CHAR(item)
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#undef TRACE_EVENT_FORMAT
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#define TRACE_EVENT_FORMAT(call, proto, args, fmt, tstruct, tpfmt) \
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int \
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ftrace_define_fields_##call(struct ftrace_event_call *event_call) \
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{ \
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struct args field; \
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int ret; \
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\
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ret = trace_define_common_fields(event_call); \
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if (ret) \
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return ret; \
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\
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tstruct; \
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\
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return ret; \
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}
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#undef TRACE_EVENT_FORMAT_NOFILTER
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#define TRACE_EVENT_FORMAT_NOFILTER(call, proto, args, fmt, tstruct, \
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tpfmt)
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#include "trace_event_types.h"
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#include "trace_entries.h"
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