From: Roland Vossen <[email protected]> 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 <[email protected]> Reviewed-by: Pieter-Paul Giesberts <[email protected]> Reviewed-by: Alwin Beukers <[email protected]> Reviewed-by: Arend van Spriel <[email protected]> Signed-off-by: Arend van Spriel <[email protected]> --- drivers/staging/brcm80211/brcmsmac/Makefile | 3 +- .../brcm80211/brcmsmac/brcms_trace_events.c | 23 +++++ .../brcm80211/brcmsmac/brcms_trace_events.h | 92 ++++++++++++++++++++ drivers/staging/brcm80211/brcmsmac/mac80211_if.c | 10 +- drivers/staging/brcm80211/brcmsmac/mac80211_if.h | 2 + 5 files changed, 124 insertions(+), 6 deletions(-) create mode 100644 drivers/staging/brcm80211/brcmsmac/brcms_trace_events.c create mode 100644 drivers/staging/brcm80211/brcmsmac/brcms_trace_events.h diff --git a/drivers/staging/brcm80211/brcmsmac/Makefile b/drivers/staging/brcm80211/brcmsmac/Makefile index e44859d..a8a152b 100644 --- a/drivers/staging/brcm80211/brcmsmac/Makefile +++ b/drivers/staging/brcm80211/brcmsmac/Makefile @@ -42,7 +42,8 @@ BRCMSMAC_OFILES := \ otp.o \ srom.o \ dma.o \ - nicpci.o + nicpci.o \ + brcms_trace_events.o MODULEPFX := brcmsmac diff --git a/drivers/staging/brcm80211/brcmsmac/brcms_trace_events.c b/drivers/staging/brcm80211/brcmsmac/brcms_trace_events.c new file mode 100644 index 0000000..52fc9ee --- /dev/null +++ b/drivers/staging/brcm80211/brcmsmac/brcms_trace_events.c @@ -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 diff --git a/drivers/staging/brcm80211/brcmsmac/brcms_trace_events.h b/drivers/staging/brcm80211/brcmsmac/brcms_trace_events.h new file mode 100644 index 0000000..27dd73e --- /dev/null +++ b/drivers/staging/brcm80211/brcmsmac/brcms_trace_events.h @@ -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 */ diff --git a/drivers/staging/brcm80211/brcmsmac/mac80211_if.c b/drivers/staging/brcm80211/brcmsmac/mac80211_if.c index c5afeaf..fa00ab3 100644 --- a/drivers/staging/brcm80211/brcmsmac/mac80211_if.c +++ b/drivers/staging/brcm80211/brcmsmac/mac80211_if.c @@ -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; diff --git a/drivers/staging/brcm80211/brcmsmac/mac80211_if.h b/drivers/staging/brcm80211/brcmsmac/mac80211_if.h index 2bdcd4c..92256d0 100644 --- a/drivers/staging/brcm80211/brcmsmac/mac80211_if.h +++ b/drivers/staging/brcm80211/brcmsmac/mac80211_if.h @@ -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_ */ -- 1.7.4.1 _______________________________________________ devel mailing list [email protected] http://driverdev.linuxdriverproject.org/mailman/listinfo/devel
