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>

diff --git a/drivers/net/wireless/brcm80211/Kconfig b/drivers/net/wireless/brcm80211/Kconfig
index b480088..1d92d87 100644 (file)
--- a/drivers/net/wireless/brcm80211/Kconfig
+++ b/drivers/net/wireless/brcm80211/Kconfig
@@ -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

diff --git a/drivers/net/wireless/brcm80211/brcmsmac/brcms_trace_events.h b/drivers/net/wireless/brcm80211/brcmsmac/brcms_trace_events.h
index 27dd73e..bcf6969 100644 (file)
--- a/drivers/net/wireless/brcm80211/brcmsmac/brcms_trace_events.h
+++ b/drivers/net/wireless/brcm80211/brcmsmac/brcms_trace_events.h
@@ -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 */