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authorTobin C. Harding <me@tobin.cc>2018-02-19 13:23:44 +1100
committerTobin C. Harding <me@tobin.cc>2018-04-07 08:50:34 +1000
commit5e4bac34edc7829b4a0749e3870d4a171c1f036f (patch)
tree37e73e94625c0f9f6aab110ba9fdebf30d84058c /scripts
parentb401f56f33bf551304cc4ca4f503863ee6ac7787 (diff)
downloadlinux-stericsson-5e4bac34edc7829b4a0749e3870d4a171c1f036f.tar.gz
leaking_addresses: cache architecture name
Currently we are repeatedly calling `uname -m`. This is causing the script to take a long time to run (more than 10 seconds to parse /proc/kallsyms). We can use Perl state variables to cache the result of the first call to `uname -m`. With this change in place the script scans the whole kernel in under a minute. Cache machine architecture in state variable. Signed-off-by: Tobin C. Harding <me@tobin.cc>
Diffstat (limited to 'scripts')
-rwxr-xr-xscripts/leaking_addresses.pl8
1 files changed, 5 insertions, 3 deletions
diff --git a/scripts/leaking_addresses.pl b/scripts/leaking_addresses.pl
index 2ad6e7fb6698..6e5bc57caeaa 100755
--- a/scripts/leaking_addresses.pl
+++ b/scripts/leaking_addresses.pl
@@ -175,7 +175,7 @@ sub is_32bit
sub is_ix86_32
{
- my $arch = `uname -m`;
+ state $arch = `uname -m`;
chomp $arch;
if ($arch =~ m/i[3456]86/) {
@@ -198,12 +198,14 @@ sub is_arch
sub is_x86_64
{
- return is_arch('x86_64');
+ state $is = is_arch('x86_64');
+ return $is;
}
sub is_ppc64
{
- return is_arch('ppc64');
+ state $is = is_arch('ppc64');
+ return $is;
}
# Gets config option value from kernel config file.