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Revision 26f7227b

ID26f7227bfe9a9abee3fe5190cbfc35dd876e06d9

Added by Stefan Hajnoczi over 13 years ago

trace: Add simple built-in tracing backend

This patch adds a simple tracer which produces binary trace files. To
try out the simple backend:

$ ./configure --trace-backend=simple
$ make

After running QEMU you can pretty-print the trace:

$ ./simpletrace.py trace-events trace.log

The output of simpletrace.py looks like this:

qemu_realloc 0.699 ptr=0x24363f0 size=0x3 newptr=0x24363f0
  qemu_free 0.768 ptr=0x24363f0
  ^           ^-- timestamp delta (us)
|____ trace event name

Signed-off-by: Stefan Hajnoczi <>

trace: Make trace record fields 64-bit

Explicitly use 64-bit fields in trace records so that timestamps and
magic numbers work for 32-bit host builds.

Includes fixes from Prerna Saxena 

.

Signed-off-by: Prerna Saxena <prerna@linux.vnet.ibm.com>
Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>

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