perf report: Add a popup menu to ask what operation is to be performed

Right now it presents a menu with these options:

 +------------------------------+
 | Annotate CURRENT_SYMBOL_NAME |
 | Exit                         |
 +------------------------------+

If the highlighted (current) symbol is not annotatable only the
"Exit" option will appear.

Also add a confirmation dialog when ESC is pressed on the top
level to avoid exiting the application by pressing one too many
ESC key.

To get to the menu just press the -> (Right navigation key), to
exit just press ESC.

Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
Cc: Frédéric Weisbecker <[email protected]>
Cc: Mike Galbraith <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Paul Mackerras <[email protected]>
LKML-Reference: <[email protected]>
Signed-off-by: Ingo Molnar <[email protected]>
1 file changed