perf: net_dropmonitor: Do not assume ordering of dictionaries

The sort order of dictionaries in Python is undocumented.  Use
tuples instead, which are documented to be lexically ordered.

Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/tools/perf/scripts/python/net_dropmonitor.py b/tools/perf/scripts/python/net_dropmonitor.py
index 4c11605..6acdc82 100755 (executable)
--- a/tools/perf/scripts/python/net_dropmonitor.py
+++ b/tools/perf/scripts/python/net_dropmonitor.py
@@ -32,7 +32,7 @@ def get_kallsyms_table():
                j = j +1
                if ((j % 100) == 0):
                        print "\r" + str(j) + "/" + str(linecount),
-               kallsyms.append({ 'loc': loc, 'name' : name})
+               kallsyms.append((loc, name))
 
        print "\r" + str(j) + "/" + str(linecount)
        kallsyms.sort()
@@ -40,9 +40,9 @@ def get_kallsyms_table():
 
 def get_sym(sloc):
        loc = int(sloc)
-       for i in kallsyms[::-1]:
-               if loc >= i['loc']:
-                       return (i['name'], loc - i['loc'])
+       for symloc, name in kallsyms[::-1]:
+               if loc >= symloc:
+                       return (name, loc - symloc)
        return (None, 0)
 
 def print_drop_table():