tree 3c8d48ee20ab8d166a94b177a74c0e0bcd0c0180
parent 142a41e3df8e110e63f0180b8fbb603f84097e31
author Steven Rostedt (VMware) <rostedt@goodmis.org> 1594240134 -0400
committer Steven Rostedt (VMware) <rostedt@goodmis.org> 1594256776 -0400

tools lib traceevent: Let function symbols be used in operations

The preemptirq events records only 32 bits for the locations of where the
events occur. It records the offset from _stext to do so. But the
libtraceevent does not handle function names in operations to add offsets
to.

Have the eval_num_arg() check if the value found is zero and then check if
it is a string. If it is a string value, check if that string matches any
function. If it does, then evaluate the function symbol and replace the
value with the actual number to complete the calculation.

Link: http://lore.kernel.org/linux-trace-devel/20200708203017.319177062@goodmis.org

Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=205953
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>