use PVE::ProcFSTools;
sub new {
- my ($this) = @_;
+ my ($class, $members) = @_;
- my $class = ref($this) || $this;
-
- my $self = bless { members => {} }, $class;
+ $members //= {};
+ my $self = bless { members => $members }, $class;
return $self;
}
+# Create a new set with the contents of a cgroup-v1 subdirectory.
+# Deprecated:
sub new_from_cgroup {
- my ($this, $cgroup, $kind) = @_;
+ my ($class, $cgroup, $effective) = @_;
+
+ return $class->new_from_path("/sys/fs/cgroup/cpuset/$cgroup", $effective);
+}
- $kind //= 'cpus';
+# Create a new set from the contents of a complete path to a cgroup directory.
+sub new_from_path {
+ my ($class, $path, $effective) = @_;
+
+ my $filename;
+ if ($effective) {
+ $filename = "$path/cpuset.effective_cpus";
+ if (!-e $filename) {
+ # cgroupv2:
+ $filename = "$path/cpuset.cpus.effective";
+ }
+ } else {
+ $filename = "$path/cpuset.cpus";
+ }
- my $filename = "/sys/fs/cgroup/cpuset/$cgroup/cpuset.$kind";
my $set_text = PVE::Tools::file_read_firstline($filename) // '';
- my $cpuset = $this->new();
+ my ($count, $members) = parse_cpuset($set_text);
- my $members = $cpuset->{members};
+ return $class->new($members);
+}
+sub parse_cpuset {
+ my ($set_text) = @_;
+
+ my $members = {};
my $count = 0;
foreach my $part (split(/,/, $set_text)) {
}
}
- die "got empty cpuset for cgroup '$cgroup'\n"
- if !$count;
-
- return $cpuset;
+ return ($count, $members);
}
+# Deprecated:
sub write_to_cgroup {
my ($self, $cgroup) = @_;
- my $filename = "/sys/fs/cgroup/cpuset/$cgroup/cpuset.cpus";
+ return $self->write_to_path("/sys/fs/cgroup/cpuset/$cgroup");
+}
+
+# Takes the cgroup directory containing the cpuset.cpus file (to be closer to
+# new_from_path behavior this doesn't take the complete file name).
+sub write_to_path {
+ my ($self, $path) = @_;
+
+ my $filename = "$path/cpuset.cpus";
my $value = '';
my @members = $self->members();
$value .= $cpuid;
}
- die "unable to write empty cpu set\n" if !length($value);
-
open(my $fh, '>', $filename) || die "failed to open '$filename' - $!\n";
PVE::Tools::safe_print($filename, $fh, "$value\n");
close($fh) || die "failed to close '$filename' - $!\n";