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cpumf/cpumf_helper: always return list reference for --sfb-size

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Running lscpumf -i as regular user causes a warning when trying to
disply sampling buffer sizes.  The root cause is in the cpumf_helper
that returns "0,0" instead of a list reference "[0,0]".

This happened when running as regular user because the sampling buffer
size sysfs attribute is not readable for them.

Remove the shortcut and always return a list reference.

Signed-off-by: Hendrik Brueckner <brueckner@linux.ibm.com>
Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com>
This commit is contained in:
Hendrik Brueckner
2019-02-07 18:38:27 +01:00
committed by Jan Höppner
parent a69470d7e0
commit 299144264d
1 changed files with 5 additions and 4 deletions
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9
cpumf/bin/cpumf_helper.in
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@@ -51,10 +51,11 @@ sub cpumf_get_sfb_size()
my $val = "0,0";
my $SFBSIZE;
return $val unless open($SFBSIZE, '<', $CPUM_SFB_SIZE);
$val = <$SFBSIZE>;
chomp($val);
close($SFBSIZE);
if (open($SFBSIZE, '<', $CPUM_SFB_SIZE)) {
$val = <$SFBSIZE>;
chomp($val);
close($SFBSIZE);
}
return [split /,/, $val];
}