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Date: Tue, 04 May 2010 18:58:09 -0400 From: Steven Rostedt <rostedt@...dmis.org> To: Larry Finger <Larry.Finger@...inger.net> Cc: LKML <linux-kernel@...r.kernel.org> Subject: Re: How to write marker info in MMIO trace from kernel On Tue, 2010-05-04 at 17:27 -0500, Larry Finger wrote: > Thanks for the info. One other question - when I write only mmiotrace to > the current_tracer, the trace_printk() stuff does not end up in the > buffer. I can get it by using the "sysprof" tracer, but that has a lot > of stuff I do not want. Did I miss some configuration? My list of > available tracers is "blk kmemtrace mmiotrace wakeup_rt wakeup function > sysprof sched_switch nop". Ug, that's because the mmiotrace handles its own prints and ignores anything it does not know about. Here, try this patch: -- Steve diff --git a/kernel/trace/trace_mmiotrace.c b/kernel/trace/trace_mmiotrace.c index 017fa37..8652f28 100644 --- a/kernel/trace/trace_mmiotrace.c +++ b/kernel/trace/trace_mmiotrace.c @@ -282,7 +282,7 @@ static enum print_line_t mmio_print_line(struct trace_iterator *iter) case TRACE_PRINT: return mmio_print_mark(iter); default: - return TRACE_TYPE_HANDLED; /* ignore unknown entries */ + return TRACE_TYPE_UNHANDLED; } } -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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