audit_debug: diagnostics for audit internal workings

A number of diagnostic patches including a /proc/audit* interface to get a better view of what is happenning with what frequency in the audit queue code.

Richard Guy Briggs (13):
audit_debug: set reserve to same size as backlog
audit_debug: squawk when digging into reserve
audit_debug: proc instrumentation
audit_debug: add /proc counters for overflows, waiters, recovers,
reserves
audit_debug: proc debug output easier to paste
audit_debug: don't let systemd change config
audit_debug: instrument audit_cmd_mutex contention
audit_debug: seperate out audit_titles in proc display
netlink_debug: instrument timing of calls by init/systemd or
audit_pid
audit_debug: bark on impossible reserve process conditions in while
loop
audit_debug: instrument audit_receive timing
audit_debug: list processes and frequencies waiting for auditd
audit_debug: print inode nr for each path when listing exe rules

 include/linux/skbuff.h   |   16 ++++
 kernel/audit.c           |  219 ++++++++++++++++++++++++++++++++++++++++++++--
 kernel/audit.h           |    2 +
 kernel/audit_fsnotify.c  |    5 +
 kernel/auditfilter.c     |    1 +
 net/netlink/af_netlink.c |   16 ++++
 6 files changed, 250 insertions(+), 9 deletions(-)