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root / trace @ 1de7afc9

Name Size
control.c 1.4 kB
control.h 1.2 kB
default.c 1.2 kB
simple.c 12 kB
simple.h 1.4 kB
stderr.c 1.3 kB
stderr.h 182 Bytes

Latest revisions

# Date Author Comment
1de7afc9 12/19/2012 09:32 am Paolo Bonzini

misc: move include files to include/qemu/

Signed-off-by: Paolo Bonzini <>
ddde8acc 11/16/2012 02:12 pm Gerd Hoffmann

trace: allow disabling events in events file

Disable trace events prefixed with a '-'. Useful
to enable a group of tracepoints with exceptions,
like this:

usb_xhci_port_*
  -usb_xhci_port_read

which will enable all xhci port tracepoints except reads....
4552e410 08/14/2012 03:19 pm Stefan Weil

trace/simple: Replace asprintf by g_strdup_printf

asprintf is not available for all hosts. g_strdup_printf is
more portable and simplifies the code because if does not
need error handling.

The static variable does not need an explicit assignment to be NULL....
8ae601e8 08/14/2012 12:40 pm Harsh Prateek Bora

trace: rename TraceRecordHeader to TraceLogHeader

The TraceRecordHeader is really the header for the entire trace log
file. It's not per-record header so make this obvious by renaming it.

Signed-off-by: Harsh Prateek Bora <>
Signed-off-by: Stefan Hajnoczi <>
83d35d3e 08/14/2012 12:40 pm Harsh Prateek Bora

trace: remove unnecessary write_to_buffer() typecasting

The buffer argument is void* so it is not necessary to cast.

Signed-off-by: Harsh Prateek Bora <>
Signed-off-by: Stefan Hajnoczi <>
fd82f015 08/14/2012 12:40 pm Harsh Prateek Bora

trace: drop unused TraceBufferRecord->next_tbuf_idx field

Signed-off-by: Harsh Prateek Bora <>
Signed-off-by: Stefan Hajnoczi <>
db8894f2 08/14/2012 12:40 pm Harsh Prateek Bora

trace: avoid pointer aliasing in trace_record_finish()

Declaring a TraceRecord on the stack works fine. No need for a
uint8_t array and pointer aliasing.

Signed-off-by: Harsh Prateek Bora <>
Signed-off-by: Stefan Hajnoczi <>
62bab732 07/19/2012 01:34 pm Harsh Prateek Bora

Simpletrace v2: Support multiple arguments, strings.

Existing simpletrace backend allows to trace at max 6 args and does not
support strings. This newer tracelog format gets rid of fixed size records
and therefore allows to trace variable number of args including strings....
88affa1c 07/19/2012 01:34 pm Harsh Prateek Bora

monitor: remove unused do_info_trace

Going forward with simpletrace v2 variable size trace records, we cannot
have a generic function to print trace event info and therefore this
interface becomes invalid.

As per Stefan Hajnoczi:

"This command is only available from the human monitor. It's not very...
794b1f96 07/19/2012 01:30 pm Alexey Kardashevskiy

trace: added ability to comment out events in the list

It is convenient for debug to be able to switch on/off some events easily.
The only possibility now is to remove event name from the file completely
and type it again when we want it back.

The patch adds '#' symbol handling as a comment specifier....

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