Commit 8be00d98 authored by Roland Vossen's avatar Roland Vossen Committed by Greg Kroah-Hartman
Browse files

staging: brcm80211: softmac: added event tracing



Dpc and timer events can now be traced. Combined with Mac80211
driver callback tracing, all entry points into the driver can now
be traced.

Reported-by: default avatarJohannes Berg <johannes@sipsolutions.net>
Reviewed-by: default avatarPieter-Paul Giesberts <pieterpg@broadcom.com>
Reviewed-by: default avatarAlwin Beukers <alwin@broadcom.com>
Reviewed-by: default avatarArend van Spriel <arend@broadcom.com>
Signed-off-by: default avatarArend van Spriel <arend@broadcom.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@suse.de>
parent 68327a19
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+2 −1
Original line number Diff line number Diff line
@@ -42,7 +42,8 @@ BRCMSMAC_OFILES := \
	otp.o \
	srom.o \
	dma.o \
	nicpci.o
	nicpci.o \
	brcms_trace_events.o

MODULEPFX := brcmsmac

+23 −0
Original line number Diff line number Diff line
/*
 * Copyright (c) 2011 Broadcom Corporation
 *
 * Permission to use, copy, modify, and/or distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
 * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
 * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
 * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

#include <linux/module.h> /* bug in tracepoint.h, it should include this */

#ifndef __CHECKER__
#include "mac80211_if.h"
#define CREATE_TRACE_POINTS
#include "brcms_trace_events.h"
#endif
+92 −0
Original line number Diff line number Diff line
/*
 * Copyright (c) 2011 Broadcom Corporation
 *
 * Permission to use, copy, modify, and/or distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
 * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
 * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
 * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

#undef TRACE_SYSTEM
#define TRACE_SYSTEM brcmsmac

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

#define __TRACE_BRCMSMAC_H

#include <linux/tracepoint.h>
#include "mac80211_if.h"

#ifndef CONFIG_BRCMDBG
#undef TRACE_EVENT
#define TRACE_EVENT(name, proto, ...) \
static inline void trace_ ## name(proto) {}
#endif

/*
 * We define a tracepoint, its arguments, its printk format and its
 * 'fast binary record' layout.
 */
TRACE_EVENT(brcms_timer,
	/* TPPROTO is the prototype of the function called by this tracepoint */
	TP_PROTO(struct brcms_timer *t),
	/*
	 * TPARGS(firstarg, p) are the parameters names, same as found in the
	 * prototype.
	 */
	TP_ARGS(t),
	/*
	 * Fast binary tracing: define the trace record via TP_STRUCT__entry().
	 * You can think about it like a regular C structure local variable
	 * definition.
	 */
	TP_STRUCT__entry(
		__field(uint, ms)
		__field(uint, set)
		__field(uint, periodic)
	),
	TP_fast_assign(
		__entry->ms = t->ms;
		__entry->set = t->set;
		__entry->periodic = t->periodic;
	),
	TP_printk(
		"ms=%u set=%u periodic=%u",
		__entry->ms, __entry->set, __entry->periodic
	)
);

TRACE_EVENT(brcms_dpc,
	TP_PROTO(unsigned long data),
	TP_ARGS(data),
	TP_STRUCT__entry(
		__field(unsigned long, data)
	),
	TP_fast_assign(
		__entry->data = data;
	),
	TP_printk(
		"data=%p",
		(void *)__entry->data
	)
);

#endif /* __TRACE_BRCMSMAC_H */

#ifdef CONFIG_BRCMDBG

#undef TRACE_INCLUDE_PATH
#define TRACE_INCLUDE_PATH .
#undef TRACE_INCLUDE_FILE
#define TRACE_INCLUDE_FILE brcms_trace_events

#include <trace/define_trace.h>

#endif /* CONFIG_BRCMDBG */
+5 −5
Original line number Diff line number Diff line
@@ -750,7 +750,7 @@ static int brcms_set_hint(struct brcms_info *wl, char *abbrev)
	return regulatory_hint(wl->pub->ieee_hw->wiphy, abbrev);
}

static void brcms_dpc(unsigned long data)
void brcms_dpc(unsigned long data)
{
	struct brcms_info *wl;

@@ -1430,7 +1430,7 @@ void brcms_down(struct brcms_info *wl)
/*
* precondition: perimeter lock is not acquired
 */
static void _brcms_timer(struct brcms_timer *t)
void brcms_timer(struct brcms_timer *t)
{
	LOCK(t->wl);

@@ -1454,9 +1454,9 @@ static void _brcms_timer(struct brcms_timer *t)
/*
 * is called by the kernel from software irq context
 */
static void brcms_timer(unsigned long data)
static void _brcms_timer(unsigned long data)
{
	_brcms_timer((struct brcms_timer *) data);
	brcms_timer((struct brcms_timer *) data);
}

/*
@@ -1477,7 +1477,7 @@ struct brcms_timer *brcms_init_timer(struct brcms_info *wl,

	init_timer(&t->timer);
	t->timer.data = (unsigned long) t;
	t->timer.function = brcms_timer;
	t->timer.function = _brcms_timer;
	t->wl = wl;
	t->fn = fn;
	t->arg = arg;
+2 −0
Original line number Diff line number Diff line
@@ -101,5 +101,7 @@ extern void brcms_add_timer(struct brcms_info *wl, struct brcms_timer *timer,
			    uint ms, int periodic);
extern bool brcms_del_timer(struct brcms_info *wl, struct brcms_timer *timer);
extern void brcms_msleep(struct brcms_info *wl, uint ms);
extern void brcms_dpc(unsigned long data);
extern void brcms_timer(struct brcms_timer *t);

#endif				/* _BRCM_MAC80211_IF_H_ */