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trace: add "-trace events" argument to control initial state

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The "-trace events" argument can be used to provide a file with a list of trace
event names that will be enabled prior to starting execution, thus providing
early tracing.

This saves the user from manually toggling event states through the monitor
interface or whichever backend-specific interface.

Signed-off-by: Lluís Vilanova <vilanova@ac.upc.edu>
This commit is contained in:
Lluís 2011-08-31 20:31:31 +02:00 • committed by Stefan Hajnoczi
parent 31965ae27b
commit 23d15e860b
9 changed files with 92 additions and 13 deletions
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4
docs/tracing.txt
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@ -138,6 +138,10 @@ This functionality is also provided through monitor commands:
* trace-event NAME on|off
Enable/disable a given trace event.
The "-trace events=<file>" command line argument can be used to enable the
events listed in <file> from the very beginning of the program. This file must
contain one event name per line.
== Trace backends ==
The "tracetool" script automates tedious trace event code generation and also