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trace: docs: add trace file description 

When user used the trace print command from docs/tracing.txt:
  ./scripts/simpletrace.py trace-events trace-*

the user maybe be misled by the "trace-*", because if user
directly copy the comand line to run, there alway print the
bored message:
"usage: ./scripts/simpletrace.py <trace-events> <trace-file>"

then we should describe that the "trace-*" represented.

Signed-off-by: Chen Fan <chen.fan.fnst@cn.fujitsu.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
This commit is contained in:
Chen Fan 2014-07-11 11:24:37 +08:00 committed by Stefan Hajnoczi
parent 2321442920
commit 60e17d2822
1 changed files with 1 additions and 1 deletions
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docs/tracing.txt
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@ -23,7 +23,7 @@ for debugging, profiling, and observing execution.
4. Pretty-print the binary trace file:
./scripts/simpletrace.py trace-events trace-*
./scripts/simpletrace.py trace-events trace-* # Override * with QEMU <pid>
== Trace events ==