[PATCHv6 0/4] tracing: function graph output for preempt/irqs-off tracers
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From: Jiri Olsa on 2 Apr 2010 13:10 hi, updates based on comments by Frederic Weisbecker, also rebase to latest master. I'm sending reworked version of the graph output support for preemptirqsoff/preemptoff/irqsoff tracers. v6: - using stubs instead of ifdef in trace_irqsoff for graph tracer's calls v5: - function graph events are back in game - changed function graph tracer interface to be able to pass custom tracer flags - changed calls to trace_function to trace graph records when the display-graph otion is enabled. As function tracer and graph tracer have different spacing during the record output, this way it looks better, and the info stays. This could be also done via TRACE_PRINT, then it'd be displayed as comment.. I chose the first way, though it could be easily changed. v4: - fixed header to display all the info as for current irqsoff tracer - fixed reset of the max_tr buffer during the display-graph switch v3: - the function_graph tracer should have the same output as current version even with events enabled, unless I missed something again ;) - I gave up the idea of function_graph events, since it was unsuitable for outputing other events as comments "/* */" - I'm not including the raw function_graph for now attached patches: - 1/4 adding ftrace events for graph tracer - 2/4 graph tracer - adding support for passing flags to ouput functions - 3/4 graph output support for irqsoff tracer - 4/4 graph output support for preemptirqsoff/preemptoff tracers plz let me know what you think wbr, jirka --- -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo(a)vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ |