diff options
| author | Lluís Vilanova <vilanova@ac.upc.edu> | 2011-12-06 17:38:15 +0100 |
|---|---|---|
| committer | Stefan Hajnoczi <stefanha@linux.vnet.ibm.com> | 2012-03-12 10:12:34 +0000 |
| commit | b7d66a761f44a725352e19b64c587924647e6f83 (patch) | |
| tree | b9ce4c795969067cf306d925e80ffa7351e15e70 /scripts | |
| parent | a348f108842fb928563865c9918642900cd0d477 (diff) | |
trace: Provide a per-event status define for conditional compilation
Adds a 'TRACE_${NAME}_ENABLED' preprocessor define for each tracing event in
"trace.h".
This lets the user conditionally compile code with a relatively high execution
cost that is only necessary when producing the tracing information for an event
that is enabled.
Note that events using this define will probably have the "disable" property by
default, in order to avoid such costs on regular builds.
Signed-off-by: Lluís Vilanova <vilanova@ac.upc.edu>
Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
Diffstat (limited to 'scripts')
| -rwxr-xr-x | scripts/tracetool | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/scripts/tracetool b/scripts/tracetool index 4c9951d0aa..701b517ec1 100755 --- a/scripts/tracetool +++ b/scripts/tracetool @@ -519,7 +519,7 @@ linetostap_end_dtrace() # Process stdin by calling begin, line, and end functions for the backend convert() { - local begin process_line end str disable + local begin process_line end str name NAME enabled begin="lineto$1_begin_$backend" process_line="lineto$1_$backend" end="lineto$1_end_$backend" @@ -534,8 +534,15 @@ convert() # Process the line. The nop backend handles disabled lines. if has_property "$str" "disable"; then "lineto$1_nop" "$str" + enabled=0 else "$process_line" "$str" + enabled=1 + fi + if [ "$1" = "h" ]; then + name=$(get_name "$str") + NAME=$(echo $name | tr '[:lower:]' '[:upper:]') + echo "#define TRACE_${NAME}_ENABLED ${enabled}" fi done |