[lttng-modules.git] / instrumentation / events / lttng-module / printk.h

#undef TRACE_SYSTEM
#define TRACE_SYSTEM printk

#if !defined(LTTNG_TRACE_PRINTK_H) || defined(TRACE_HEADER_MULTI_READ)
#define LTTNG_TRACE_PRINTK_H

#include "../../../probes/lttng-tracepoint-event.h"
#include <linux/version.h>

#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,10,0))

LTTNG_TRACEPOINT_EVENT_MAP(console,

	printk_console,

	TP_PROTO(const char *text, size_t len),

	TP_ARGS(text, len),

	TP_FIELDS(
		ctf_sequence_text(char, msg, text, size_t, len)
	)
)

#elif (LINUX_VERSION_CODE >= KERNEL_VERSION(3,5,0))

LTTNG_TRACEPOINT_EVENT_CONDITION_MAP(console,

	printk_console,

	TP_PROTO(const char *log_buf, unsigned start, unsigned end,
		 unsigned log_buf_len),

	TP_ARGS(log_buf, start, end, log_buf_len),

	TP_CONDITION(start != end),

	TP_FIELDS(
		ctf_sequence_text(char, msg, log_buf + start,
			size_t, end - start)
	)
)

#else /* (LINUX_VERSION_CODE < KERNEL_VERSION(3,5,0)) */

LTTNG_TRACEPOINT_EVENT_CONDITION_MAP(console,

	printk_console,

	TP_PROTO(const char *log_buf, unsigned start, unsigned end,
		 unsigned log_buf_len),

	TP_ARGS(log_buf, start, end, log_buf_len),

	TP_CONDITION(start != end),

	TP_FIELDS(
		/*
		 * printk buffer is gathered from two segments on older kernels.
		 */
		ctf_sequence_text(char, msg1,
			log_buf + (start & (log_buf_len - 1)),
			size_t, (start & (log_buf_len - 1)) > (end & (log_buf_len - 1))
				? log_buf_len - (start & (log_buf_len - 1))
				: end - start)
		ctf_sequence_text(char, msg2,
			log_buf,
			size_t, (start & (log_buf_len - 1)) > (end & (log_buf_len - 1))
				? end & (log_buf_len - 1)
				: 0)
	)
)

#endif

#endif /* LTTNG_TRACE_PRINTK_H */

/* This part must be outside protection */
#include "../../../probes/define_trace.h"
Commit	Line	Data
	1	#undef TRACE_SYSTEM
	2	#define TRACE_SYSTEM printk
	3
	4	#if !defined(LTTNG_TRACE_PRINTK_H) \|\| defined(TRACE_HEADER_MULTI_READ)
	5	#define LTTNG_TRACE_PRINTK_H
	6
	7	#include "../../../probes/lttng-tracepoint-event.h"
	8	#include <linux/version.h>
	9
	10	#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,10,0))
	11
	12	LTTNG_TRACEPOINT_EVENT_MAP(console,
	13
	14	printk_console,
	15
	16	TP_PROTO(const char *text, size_t len),
	17
	18	TP_ARGS(text, len),
	19
	20	TP_FIELDS(
	21	ctf_sequence_text(char, msg, text, size_t, len)
	22	)
	23	)
	24
	25	#elif (LINUX_VERSION_CODE >= KERNEL_VERSION(3,5,0))
	26
	27	LTTNG_TRACEPOINT_EVENT_CONDITION_MAP(console,
	28
	29	printk_console,
	30
	31	TP_PROTO(const char *log_buf, unsigned start, unsigned end,
	32	unsigned log_buf_len),
	33
	34	TP_ARGS(log_buf, start, end, log_buf_len),
	35
	36	TP_CONDITION(start != end),
	37
	38	TP_FIELDS(
	39	ctf_sequence_text(char, msg, log_buf + start,
	40	size_t, end - start)
	41	)
	42	)
	43
	44	#else /* (LINUX_VERSION_CODE < KERNEL_VERSION(3,5,0)) */
	45
	46	LTTNG_TRACEPOINT_EVENT_CONDITION_MAP(console,
	47
	48	printk_console,
	49
	50	TP_PROTO(const char *log_buf, unsigned start, unsigned end,
	51	unsigned log_buf_len),
	52
	53	TP_ARGS(log_buf, start, end, log_buf_len),
	54
	55	TP_CONDITION(start != end),
	56
	57	TP_FIELDS(
	58	/*
	59	* printk buffer is gathered from two segments on older kernels.
	60	*/
	61	ctf_sequence_text(char, msg1,
	62	log_buf + (start & (log_buf_len - 1)),
	63	size_t, (start & (log_buf_len - 1)) > (end & (log_buf_len - 1))
	64	? log_buf_len - (start & (log_buf_len - 1))
	65	: end - start)
	66	ctf_sequence_text(char, msg2,
	67	log_buf,
	68	size_t, (start & (log_buf_len - 1)) > (end & (log_buf_len - 1))
	69	? end & (log_buf_len - 1)
	70	: 0)
	71	)
	72	)
	73
	74	#endif
	75
	76	#endif /* LTTNG_TRACE_PRINTK_H */
	77
	78	/* This part must be outside protection */
	79	#include "../../../probes/define_trace.h"