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authorPeter Zijlstra <peterz@infradead.org>2020-08-07 20:53:16 +0200
committerPeter Zijlstra <peterz@infradead.org>2020-08-26 12:41:56 +0200
commiteb1f00237aca2e368b93db79303f8433d1976d10 (patch)
tree4923e5e3564921099b83b1f791e83507175c59ef /drivers
parent044d0d6de9f50192f9697583504a382347ee95ca (diff)
lockdep,trace: Expose tracepoints
The lockdep tracepoints are under the lockdep recursion counter, this has a bunch of nasty side effects: - TRACE_IRQFLAGS doesn't work across the entire tracepoint - RCU-lockdep doesn't see the tracepoints either, hiding numerous "suspicious RCU usage" warnings. Pull the trace_lock_*() tracepoints completely out from under the lockdep recursion handling and completely rely on the trace level recusion handling -- also, tracing *SHOULD* not be taking locks in any case. Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Reviewed-by: Steven Rostedt (VMware) <rostedt@goodmis.org> Reviewed-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Tested-by: Marco Elver <elver@google.com> Link: https://lkml.kernel.org/r/20200821085348.782688941@infradead.org
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