On Sun, Jun 04, 2017 at 04:26:43PM +0200, Thomas Gleixner wrote: > On Wed, 31 May 2017, Peter Zijlstra wrote: > > > Now that (PI) futexes have their own private RT-mutex interface and > > implementation we can easily add lockdep annotations to the existing > > RT-mutex interface. > > > > Signed-off-by: Peter Zijlstra (Intel) <[email protected]> > > --- > > include/linux/rtmutex.h | 25 +++++++++++++++++++++---- > > kernel/locking/rtmutex-debug.c | 6 +++++- > > Shouldn't we get rid of all that home brewn rtmutex debug muck?
mutex also still has its mutex-debug.* stuff. It validates a little more state. Also, and I think this is the main benefit, it has the magic bits in that detect corruption without the full space/time costs of lockdep. Maybe we can trim the rtmutex-debug a wee bit, but then futexes don't get that coverage. I'll put looking at this on the todo list.
