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authorSteven Rostedt (Red Hat) <rostedt@goodmis.org>2014-06-02 23:20:16 -0400
committerJiri Olsa <jolsa@kernel.org>2014-06-07 23:33:37 +0200
commit473a778a2f2949972b52ad7fc61577f381f2d05e (patch)
tree17cbf62b89bcbc38b600027cc61eda50469a796b /tools/perf/util
parent49440828ad7b809e9d31f6108875e3b1e974690c (diff)
downloadop-kernel-dev-473a778a2f2949972b52ad7fc61577f381f2d05e.zip
op-kernel-dev-473a778a2f2949972b52ad7fc61577f381f2d05e.tar.gz
tools lib traceevent: Added support for __get_bitmask() macro
Coming in v3.16, trace events will be able to save bitmasks in raw format in the ring buffer and output it with the __get_bitmask() macro. In order for userspace tools to parse this, it must be able to handle the __get_bitmask() call and be able to convert the data that's in the ring buffer into a nice bitmask format. The output is similar to what the kernel uses to print bitmasks, with a comma separator every 4 bytes (8 characters). This allows for cpumasks to also be saved efficiently. The first user is the thermal:thermal_power_limit event which has the following output: thermal_power_limit: cpus=0000000f freq=1900000 cdev_state=0 power=5252 Link: http://lkml.kernel.org/r/20140506132238.22e136d1@gandalf.local.home Suggested-by: Javi Merino <javi.merino@arm.com> Signed-off-by: Steven Rostedt <rostedt@goodmis.org> Acked-by: Namhyung Kim <namhyung@kernel.org> Tested-by: Javi Merino <javi.merino@arm.com> Link: http://lkml.kernel.org/r/20140603032224.229186537@goodmis.org Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Diffstat (limited to 'tools/perf/util')
-rw-r--r--tools/perf/util/scripting-engines/trace-event-perl.c1
-rw-r--r--tools/perf/util/scripting-engines/trace-event-python.c1
2 files changed, 2 insertions, 0 deletions
diff --git a/tools/perf/util/scripting-engines/trace-event-perl.c b/tools/perf/util/scripting-engines/trace-event-perl.c
index e108207..af7da56 100644
--- a/tools/perf/util/scripting-engines/trace-event-perl.c
+++ b/tools/perf/util/scripting-engines/trace-event-perl.c
@@ -215,6 +215,7 @@ static void define_event_symbols(struct event_format *event,
case PRINT_BSTRING:
case PRINT_DYNAMIC_ARRAY:
case PRINT_STRING:
+ case PRINT_BITMASK:
break;
case PRINT_TYPE:
define_event_symbols(event, ev_name, args->typecast.item);
diff --git a/tools/perf/util/scripting-engines/trace-event-python.c b/tools/perf/util/scripting-engines/trace-event-python.c
index cd9774d..c3de097 100644
--- a/tools/perf/util/scripting-engines/trace-event-python.c
+++ b/tools/perf/util/scripting-engines/trace-event-python.c
@@ -197,6 +197,7 @@ static void define_event_symbols(struct event_format *event,
case PRINT_BSTRING:
case PRINT_DYNAMIC_ARRAY:
case PRINT_FUNC:
+ case PRINT_BITMASK:
/* we should warn... */
return;
}
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