perf ui helpline: Provide a printf variant

To print some values, like in the annotation code with invalid jump
offsets.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-1vk0g5twas2ioswn1mmvnvwq@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

diff --git a/tools/perf/ui/helpline.c b/tools/perf/ui/helpline.c
index 5b74a7e..379039a 100644 (file)
--- a/tools/perf/ui/helpline.c
+++ b/tools/perf/ui/helpline.c
@@ -72,3 +72,13 @@ int ui_helpline__vshow(const char *fmt, va_list ap)
 {
        return helpline_fns->show(fmt, ap);
 }
+
+void ui_helpline__printf(const char *fmt, ...)
+{
+       va_list ap;
+
+       ui_helpline__pop();
+       va_start(ap, fmt);
+       ui_helpline__vpush(fmt, ap);
+       va_end(ap);
+}

diff --git a/tools/perf/ui/helpline.h b/tools/perf/ui/helpline.h
index 46181f4..d52d0a1 100644 (file)
--- a/tools/perf/ui/helpline.h
+++ b/tools/perf/ui/helpline.h
@@ -21,6 +21,7 @@ void ui_helpline__push(const char *msg);
 void ui_helpline__vpush(const char *fmt, va_list ap);
 void ui_helpline__fpush(const char *fmt, ...);
 void ui_helpline__puts(const char *msg);
+void ui_helpline__printf(const char *fmt, ...);
 int  ui_helpline__vshow(const char *fmt, va_list ap);
 
 extern char ui_helpline__current[512];