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由 Steven Rostedt (VMware) 提交于
Joel Fernandes created a nice patch that cleaned up the duplicate hooks used by lockdep and irqsoff latency tracer. It made both use tracepoints. But it caused lockdep to trigger several false positives. We have not figured out why yet, but removing lockdep from using the trace event hooks and just call its helper functions directly (like it use to), makes the problem go away. This is a partial revert of the clean up patch c3bc8fd6 ("tracing: Centralize preemptirq tracepoints and unify their usage") that adds direct calls for lockdep, but also keeps most of the clean up done to get rid of the horrible preprocessor if statements. Link: http://lkml.kernel.org/r/20180806155058.5ee875f4@gandalf.local.home Cc: Peter Zijlstra <peterz@infradead.org> Reviewed-by: NJoel Fernandes (Google) <joel@joelfernandes.org> Fixes: c3bc8fd6 ("tracing: Centralize preemptirq tracepoints and unify their usage") Signed-off-by: NSteven Rostedt (VMware) <rostedt@goodmis.org>
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