Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 297a344d authored by Uwe Kleine-König's avatar Uwe Kleine-König Committed by Greg Kroah-Hartman
Browse files

siox: add support for tracing 



Implement tracing for SIOX. There are events for the data that is
written to the bus and for data being read from it.

Acked-by: default avatarGavin Schenk <g.schenk@eckelmann.de>
Signed-off-by: default avatarUwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 658a494a

drivers/siox/siox-core.c

+12 −0
Original line number Diff line number Diff line
@@ -33,6 +33,9 @@ 
 */

#define SIOX_STATUS_TYPE		0xf0



#define CREATE_TRACE_POINTS

#include <trace/events/siox.h>



static bool siox_is_registered;



static void siox_master_lock(struct siox_master *smaster)
@@ -126,6 +129,7 @@ static void siox_poll(struct siox_master *smaster) 
{

	struct siox_device *sdevice;

	size_t i = smaster->setbuf_len;

	unsigned int devno = 0;

	int unsync_error = 0;



	smaster->last_poll = jiffies;
@@ -172,6 +176,10 @@ static void siox_poll(struct siox_master *smaster) 
			sdevice->status_written &= ~SIOX_STATUS_WDG;



		smaster->buf[i] = sdevice->status_written;



		trace_siox_set_data(smaster, sdevice, devno, i);



		devno++;

	}



	smaster->pushpull(smaster, smaster->setbuf_len, smaster->buf,
@@ -181,6 +189,7 @@ static void siox_poll(struct siox_master *smaster) 
	unsync_error = 0;



	/* interpret data pulled in from devices in buf[setbuf_len..] */

	devno = 0;

	i = smaster->setbuf_len;

	list_for_each_entry(sdevice, &smaster->devices, node) {

		struct siox_driver *sdriver =
@@ -255,10 +264,13 @@ static void siox_poll(struct siox_master *smaster) 
		sdevice->status_written_lastcycle = sdevice->status_written;

		sdevice->connected = connected;



		trace_siox_get_data(smaster, sdevice, devno, status_clean, i);



		/* only give data read to driver if the device is connected */

		if (sdriver && connected)

			sdriver->get_data(sdevice, &smaster->buf[i]);



		devno++;

		i += sdevice->outbytes;

	}

}

include/trace/events/siox.h

0 → 100644
+66 −0
Original line number Diff line number Diff line 
#undef TRACE_SYSTEM

#define TRACE_SYSTEM siox



#if !defined(_TRACE_SIOX_H) || defined(TRACE_HEADER_MULTI_READ)

#define _TRACE_SIOX_H



#include <linux/tracepoint.h>



TRACE_EVENT(siox_set_data,

	    TP_PROTO(const struct siox_master *smaster,

		     const struct siox_device *sdevice,

		     unsigned int devno, size_t bufoffset),

	    TP_ARGS(smaster, sdevice, devno, bufoffset),

	    TP_STRUCT__entry(

			     __field(int, busno)

			     __field(unsigned int, devno)

			     __field(size_t, inbytes)

			     __dynamic_array(u8, buf, sdevice->inbytes)

			    ),

	    TP_fast_assign(

			   __entry->busno = smaster->busno;

			   __entry->devno = devno;

			   __entry->inbytes = sdevice->inbytes;

			   memcpy(__get_dynamic_array(buf),

				  smaster->buf + bufoffset, sdevice->inbytes);

			  ),

	    TP_printk("siox-%d-%u [%*phD]",

		      __entry->busno,

		      __entry->devno,

		      (int)__entry->inbytes, __get_dynamic_array(buf)

		     )

);



TRACE_EVENT(siox_get_data,

	    TP_PROTO(const struct siox_master *smaster,

		     const struct siox_device *sdevice,

		     unsigned int devno, u8 status_clean,

		     size_t bufoffset),

	    TP_ARGS(smaster, sdevice, devno, status_clean, bufoffset),

	    TP_STRUCT__entry(

			     __field(int, busno)

			     __field(unsigned int, devno)

			     __field(u8, status_clean)

			     __field(size_t, outbytes)

			     __dynamic_array(u8, buf, sdevice->outbytes)

			    ),

	    TP_fast_assign(

			   __entry->busno = smaster->busno;

			   __entry->devno = devno;

			   __entry->status_clean = status_clean;

			   __entry->outbytes = sdevice->outbytes;

			   memcpy(__get_dynamic_array(buf),

				  smaster->buf + bufoffset, sdevice->outbytes);

			  ),

	    TP_printk("siox-%d-%u (%02hhx) [%*phD]",

		      __entry->busno,

		      __entry->devno,

		      __entry->status_clean,

		      (int)__entry->outbytes, __get_dynamic_array(buf)

		     )

);



#endif /* if !defined(_TRACE_SIOX_H) || defined(TRACE_HEADER_MULTI_READ) */



/* This part must be outside protection */

#include <trace/define_trace.h>