Messages in this thread Patch in this message | | | Subject | Re: How to write marker info in MMIO trace from kernel | From | Steven Rostedt <> | Date | Tue, 04 May 2010 18:58:09 -0400 |
| |
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; } }
| |