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authorAndy Shevchenko <andriy.shevchenko@linux.intel.com>2017-11-29 16:11:05 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2017-11-29 18:40:43 -0800
commitedbddb83a15b4361d8c3bf00aabee85fd3ef4d80 (patch)
treeeff0436d3923cb327dbec8251657a411e19d0f43 /scripts
parentd5dabd633922ac5ee5bcc67748f7defb8b211469 (diff)
downloadop-kernel-dev-edbddb83a15b4361d8c3bf00aabee85fd3ef4d80.zip
op-kernel-dev-edbddb83a15b4361d8c3bf00aabee85fd3ef4d80.tar.gz
scripts/bloat-o-meter: don't fail with division by 0
Under some circumstances it's possible to get a divider 0 which crashes the script. Traceback (most recent call last): File "linux/scripts/bloat-o-meter", line 98, in <module> print_result("Function", "tTdDbBrR", 2) File "linux/scripts/bloat-o-meter", line 87, in print_result (otot, ntot, (ntot - otot)*100.0/otot)) ZeroDivisionError: float division by zero Hide this by checking the divider first. Link: http://lkml.kernel.org/r/20171123171219.31453-1-andriy.shevchenko@linux.intel.com Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Cc: Alexey Dobriyan <adobriyan@gmail.com> Cc: Vaneet Narang <v.narang@samsung.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'scripts')
-rwxr-xr-xscripts/bloat-o-meter7
1 files changed, 5 insertions, 2 deletions
diff --git a/scripts/bloat-o-meter b/scripts/bloat-o-meter
index 6f099f9..94b6648 100755
--- a/scripts/bloat-o-meter
+++ b/scripts/bloat-o-meter
@@ -83,8 +83,11 @@ def print_result(symboltype, symbolformat, argc):
for d, n in delta:
if d: print("%-40s %7s %7s %+7d" % (n, old.get(n,"-"), new.get(n,"-"), d))
- print("Total: Before=%d, After=%d, chg %+.2f%%" % \
- (otot, ntot, (ntot - otot)*100.0/otot))
+ if otot:
+ percent = (ntot - otot) * 100.0 / otot
+ else:
+ percent = 0
+ print("Total: Before=%d, After=%d, chg %+.2f%%" % (otot, ntot, percent))
if sys.argv[1] == "-c":
print_result("Function", "tT", 3)
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