Revision 8f5a0fb1

b/docs/tracing.txt
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be enabled using:
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  trace-event virtio_blk_* on
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If a line in the "-trace events=<file>" file begins with a '-', the trace event


  		





  
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will be disabled instead of enabled.  This is useful when a wildcard was used


  		





  
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to enable an entire family of events but one noisy event needs to be disabled.


  		





  
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== Trace backends ==


  		





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The "tracetool" script automates tedious trace event code generation and also


  		












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