Switch unconfined and in-tree labels to percpu managed mode of percpu rcuref. This helps avoid memory contention in ref get and put operations.
Signed-off-by: Neeraj Upadhyay <neeraj.upadh...@amd.com> --- security/apparmor/label.c | 1 + security/apparmor/policy_ns.c | 2 ++ 2 files changed, 3 insertions(+) diff --git a/security/apparmor/label.c b/security/apparmor/label.c index f28dec1c3e70..57fcd5b3e48a 100644 --- a/security/apparmor/label.c +++ b/security/apparmor/label.c @@ -710,6 +710,7 @@ static struct aa_label *__label_insert(struct aa_labelset *ls, rb_link_node(&label->node, parent, new); rb_insert_color(&label->node, &ls->root); label->flags |= FLAG_IN_TREE; + percpu_rcuref_manage(&label->count); return aa_get_label(label); } diff --git a/security/apparmor/policy_ns.c b/security/apparmor/policy_ns.c index 1f02cfe1d974..ff261b119c53 100644 --- a/security/apparmor/policy_ns.c +++ b/security/apparmor/policy_ns.c @@ -124,6 +124,7 @@ static struct aa_ns *alloc_ns(const char *prefix, const char *name) goto fail_unconfined; /* ns and ns->unconfined share ns->unconfined refcount */ ns->unconfined->ns = ns; + percpu_rcuref_manage(&ns->unconfined->label.count); atomic_set(&ns->uniq_null, 0); @@ -377,6 +378,7 @@ int __init aa_alloc_root_ns(void) } kernel_t = &kernel_p->label; root_ns->unconfined->ns = aa_get_ns(root_ns); + percpu_rcuref_manage(&root_ns->unconfined->label.count); return 0; } -- 2.34.1