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torvalds
GitHub Repository: torvalds/linux
 Path: blob/master/include/trace/define_remote_events.h
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/* SPDX-License-Identifier: GPL-2.0 */

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#include <linux/trace_events.h>

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#include <linux/trace_remote_event.h>

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#include <linux/trace_seq.h>

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#include <linux/stringify.h>

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#define REMOTE_EVENT_INCLUDE(__file) __stringify(../../__file)

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#ifdef REMOTE_EVENT_SECTION

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# define __REMOTE_EVENT_SECTION(__name) __used __section(REMOTE_EVENT_SECTION"."#__name)

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#else

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# define __REMOTE_EVENT_SECTION(__name)

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#endif

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#define REMOTE_PRINTK_COUNT_ARGS(__args...) \

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	__COUNT_ARGS(, ##__args, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 0)

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#define __remote_printk0()								\

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	trace_seq_putc(seq, '\n')

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#define __remote_printk1(__fmt)								\

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	trace_seq_puts(seq, " " __fmt "\n")						\

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#define __remote_printk2(__fmt, __args...)						\

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do {											\

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	trace_seq_putc(seq, ' ');							\

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	trace_seq_printf(seq, __fmt, __args);						\

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	trace_seq_putc(seq, '\n');							\

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} while (0)

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/* Apply the appropriate trace_seq sequence according to the number of arguments */

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#define remote_printk(__args...)							\

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	CONCATENATE(__remote_printk, REMOTE_PRINTK_COUNT_ARGS(__args))(__args)

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#define RE_PRINTK(__args...) __args

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#define REMOTE_EVENT(__name, __id, __struct, __printk)					\

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	REMOTE_EVENT_FORMAT(__name, __struct);						\

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	static void remote_event_print_##__name(void *evt, struct trace_seq *seq)	\

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	{										\

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		struct remote_event_format_##__name __maybe_unused *__entry = evt;	\

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		trace_seq_puts(seq, #__name);						\

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		remote_printk(__printk);						\

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	}

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#include REMOTE_EVENT_INCLUDE(REMOTE_EVENT_INCLUDE_FILE)

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#undef REMOTE_EVENT

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#undef RE_PRINTK

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#undef re_field

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#define re_field(__type, __field)							\

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	{										\

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		.type = #__type, .name = #__field,					\

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		.size = sizeof(__type), .align = __alignof__(__type),			\

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		.is_signed = is_signed_type(__type),					\

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	},

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#define __entry REC

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#define RE_PRINTK(__fmt, __args...) "\"" __fmt "\", " __stringify(__args)

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#define REMOTE_EVENT(__name, __id, __struct, __printk)					\

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	static struct trace_event_fields remote_event_fields_##__name[] = {		\

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		__struct								\

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		{}									\

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	};										\

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	static char remote_event_print_fmt_##__name[] = __printk;			\

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	static struct remote_event __REMOTE_EVENT_SECTION(__name)			\

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	remote_event_##__name = {							\

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		.name		= #__name,						\

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		.id		= __id,							\

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		.fields		= remote_event_fields_##__name,				\

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		.print_fmt	= remote_event_print_fmt_##__name,			\

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		.print		= remote_event_print_##__name,				\

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	}

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#include REMOTE_EVENT_INCLUDE(REMOTE_EVENT_INCLUDE_FILE)

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