mac80211: trace debug messages

It can be very useful to have all debug messages
available when debugging, but hard to correlate
between different sources, so add a trace event
for all mac80211 debug messages.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>

1 files changed, 13 insertions, 0 deletions

diff --git a/net/mac80211/Kconfig b/net/mac80211/Kconfig
index 7475e266eb4e..63af25458fda 100644
--- a/net/mac80211/Kconfig
+++ b/net/mac80211/Kconfig
@@ -107,6 +107,19 @@ config MAC80211_DEBUGFS
 
           Say N unless you know you need this.
 
+config MAC80211_MESSAGE_TRACING
+        bool "Trace all mac80211 debug messages"
+        depends on MAC80211
+        ---help---
+          Select this option to have mac80211 register the
+          mac80211_msg trace subsystem with tracepoints to
+          collect all debugging messages, independent of
+          printing them into the kernel log.
+
+          The overhead in this option is that all the messages
+          need to be present in the binary and formatted at
+          runtime for tracing.
+
 menuconfig MAC80211_DEBUG_MENU
         bool "Select mac80211 debugging features"
         depends on MAC80211