Messages in this thread | | | Date | Sun, 21 Dec 2008 11:12:26 +0100 | From | Ingo Molnar <> | Subject | Re: [PATCH v2] tracing/function-graph-tracer: prevent from hrtimer interrupt infinite loop |
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* Ingo Molnar <mingo@elte.hu> wrote:
> btw., a graph-tracer buglet i noticed:
another thing. I turned off all the options that come ahead of the 'meat' of the trace data:
# cat /debug/tracing/trace_options print-parent nosym-offset nosym-addr noverbose noraw nohex nobin noblock nostacktrace nosched-tree ftrace_printk noftrace_preempt nobranch annotate nouserstacktrace nosym-userobj printk-msg-only nofuncgraph-overrun nofuncgraph-cpu nofuncgraph-overhead nofuncgraph-proc
but i still got the 'duration' field printed:
# tracer: function_graph # # DURATION FUNCTION CALLS # | | | | |
0.865 us | } | alloc_page_vma() { 0.295 us | get_vma_policy(); 0.268 us | policy_zonelist(); | __alloc_pages_internal() { 0.257 us | __might_sleep(); | get_page_from_freelist() {
i'd have expected to only see the flow of execution as it happens.
Ingo
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