On Tue, 10 Jul 2018 11:26:35 +0200 Peter Zijlstra <pet...@infradead.org> wrote:
> > Hmm, good question. I could possibly make all the tracepoint code into > > its own section. And then look to see if any spin locks exist in them. > > That wouldn't be too trivial to implement though. > > pick a bit from the preempt_count (say right above NMI_MASK) and set it > inside a trace-event and add in_trace(). > > Then make lockdep explode when in_trace(). > > Or something along those lines. Sure. We have current->trace for special tracing flags. That could easily be used. -- Steve
