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brcm80211: Allow trace support to be enabled separately from debug 

Since the runtime overhead of trace support is small when tracing is
disabled, users may be interested in turning on trace support while
leaving other debug features off. Add a new config option named
CONFIG_BRCM_TRACING for this purpose.

Signed-off-by: Seth Forshee <seth.forshee@canonical.com>
Reviewed-by: Pieter-Paul Giesberts <pieterpg@broadcom.com>
Reviewed-by: Arend van Spriel <arend@broadcom.com>
Tested-by: Daniel Wagner <wagi@monom.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Seth Forshee 2012-11-15 08:07:59 -06:00 committed by John W. Linville
parent 75be3e24ee
commit f5c4f10852
2 changed files with 14 additions and 3 deletions
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11
drivers/net/wireless/brcm80211/Kconfig
View File

@ -55,6 +55,17 @@ config BRCMFMAC_USB
IEEE802.11n embedded FullMAC WLAN driver. Say Y if you want to
use the driver for an USB wireless card.
config BRCM_TRACING
bool "Broadcom device tracing"
depends on BRCMSMAC || BRCMFMAC
---help---
If you say Y here, the Broadcom wireless drivers will register
with ftrace to dump event information into the trace ringbuffer.
Tracing can be enabled at runtime to aid in debugging wireless
issues. This option adds a small amount of overhead when tracing
is disabled. If unsure, say Y to allow developers to better help
you when wireless problems occur.
config BRCMDBG
bool "Broadcom driver debug functions"
depends on BRCMSMAC || BRCMFMAC

6
drivers/net/wireless/brcm80211/brcmsmac/brcms_trace_events.h
View File

@ -24,7 +24,7 @@
#include <linux/tracepoint.h>
#include "mac80211_if.h"
#ifndef CONFIG_BRCMDBG
#ifndef CONFIG_BRCM_TRACING
#undef TRACE_EVENT
#define TRACE_EVENT(name, proto, ...) \
static inline void trace_ ## name(proto) {}
@ -80,7 +80,7 @@ TRACE_EVENT(brcms_dpc,
#endif /* __TRACE_BRCMSMAC_H */
#ifdef CONFIG_BRCMDBG
#ifdef CONFIG_BRCM_TRACING
#undef TRACE_INCLUDE_PATH
#define TRACE_INCLUDE_PATH .
@ -89,4 +89,4 @@ TRACE_EVENT(brcms_dpc,
#include <trace/define_trace.h>
#endif /* CONFIG_BRCMDBG */
#endif /* CONFIG_BRCM_TRACING */