From b7d66a761f44a725352e19b64c587924647e6f83 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Llu=C3=ADs=20Vilanova?= Date: Tue, 6 Dec 2011 17:38:15 +0100 Subject: trace: Provide a per-event status define for conditional compilation MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit 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 Signed-off-by: Stefan Hajnoczi --- scripts/tracetool | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) (limited to 'scripts') diff --git a/scripts/tracetool b/scripts/tracetool index 4c9951d..701b517 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 -- cgit v1.1