iwlwifi: separate IO tracing

Since IO tracing is usually not needed and
generates a lot of data, separate it into
its own trace system so that we can always
enable iwlwifi:* and not have to worry about
getting too much data. If IO tracing is then
really needed we can enable iwlwifi_io:* in
addition and get that data.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

drivers/net/wireless/iwlwifi/iwl-devtrace.h

@@ -14,7 +14,7 @@ static inline void trace_ ## name(proto) {}
 #define PRIV_ASSIGN	__entry->priv = priv
 
 #undef TRACE_SYSTEM
-#define TRACE_SYSTEM iwlwifi
+#define TRACE_SYSTEM iwlwifi_io
 
 TRACE_EVENT(iwlwifi_dev_ioread32,
 	TP_PROTO(struct iwl_priv *priv, u32 offs, u32 val),
@@ -64,6 +64,9 @@ TRACE_EVENT(iwlwifi_dev_iowrite32,
 	TP_printk("[%p] write io[%#x] = %#x)", __entry->priv, __entry->offs, __entry->val)
 );
 
+#undef TRACE_SYSTEM
+#define TRACE_SYSTEM iwlwifi
+
 TRACE_EVENT(iwlwifi_dev_hcmd,
 	TP_PROTO(struct iwl_priv *priv, void *hcmd, size_t len, u32 flags),
 	TP_ARGS(priv, hcmd, len, flags),