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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: Johannes Berg <johannes@sipsolutions.net>
Reviewed-by: Pieter-Paul Giesberts <pieterpg@broadcom.com>
Reviewed-by: Alwin Beukers <alwin@broadcom.com>
Reviewed-by: Arend van Spriel <arend@broadcom.com>
Signed-off-by: Arend van Spriel <arend@broadcom.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Roland Vossen 2011-10-04 23:19:11 +02:00 committed by Greg Kroah-Hartman
parent 68327a1910
commit 8be00d98f1
5 changed files with 124 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
drivers/staging/brcm80211/brcmsmac/Makefile
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@ -42,7 +42,8 @@ BRCMSMAC_OFILES := \
otp.o \
srom.o \
dma.o \
nicpci.o
nicpci.o \
brcms_trace_events.o
MODULEPFX := brcmsmac

23
drivers/staging/brcm80211/brcmsmac/brcms_trace_events.c Normal file
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@ -0,0 +1,23 @@
/*
* 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
drivers/staging/brcm80211/brcmsmac/brcms_trace_events.h Normal file
View File

@ -0,0 +1,92 @@
/*
* 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 */

10
drivers/staging/brcm80211/brcmsmac/mac80211_if.c
View File

@ -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
drivers/staging/brcm80211/brcmsmac/mac80211_if.h
View File

@ -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_ */