motorhead/qemu
1
0
Fork 0
mirror of https://github.com/Motorhead1991/qemu.git synced 2025-08-06 01:03:55 -06:00
Code Issues Projects Releases Packages Wiki Activity Actions

trace: [simple] disable all trace points by default

Browse source 
Note that this refers to the backend-specific state (whether the output must be
generated), not the event "disabled" property (which always uses the "nop"
backend).

Signed-off-by: Lluís Vilanova <vilanova@ac.upc.edu>
This commit is contained in:
Lluís 2011-08-31 20:31:45 +02:00 • committed by Stefan Hajnoczi
parent dd215f646c
commit 03727e6a06
3 changed files with 10 additions and 13 deletions
Download patch file Download diff file Expand all files Collapse all files

11
docs/tracing.txt
View file

@ -12,11 +12,16 @@ for debugging, profiling, and observing execution.
./configure --trace-backend=simple
make
2. Run the virtual machine to produce a trace file:
2. Create a file with the events you want to trace:
qemu ... # your normal QEMU invocation
echo bdrv_aio_readv > /tmp/events
echo bdrv_aio_writev >> /tmp/events
3. Pretty-print the binary trace file:
3. Run the virtual machine to produce a trace file:
qemu -trace events=/tmp/events ... # your normal QEMU invocation
4. Pretty-print the binary trace file:
./simpletrace.py trace-events trace-*