Messages in this thread | | | From | Peter Newman <> | Date | Fri, 16 Dec 2022 16:12:45 +0100 | Subject | Re: [PATCH v2 2/2] x86/resctrl: Implement rename op for mon groups |
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On Tue, Nov 29, 2022 at 1:02 PM Peter Newman <peternewman@google.com> wrote: > diff --git a/arch/x86/kernel/cpu/resctrl/rdtgroup.c b/arch/x86/kernel/cpu/resctrl/rdtgroup.c > index 03b51543c26d..d6562d98b816 100644 > --- a/arch/x86/kernel/cpu/resctrl/rdtgroup.c > +++ b/arch/x86/kernel/cpu/resctrl/rdtgroup.c > @@ -3230,6 +3230,71 @@ static int rdtgroup_rmdir(struct kernfs_node *kn) > return ret; > } > > +static void mongrp_move(struct rdtgroup *rdtgrp, struct rdtgroup *new_prdtgrp) > +{ > + struct rdtgroup *prdtgrp = rdtgrp->mon.parent; > + struct task_struct *p, *t; > + > + WARN_ON(list_empty(&prdtgrp->mon.crdtgrp_list)); > + list_del(&rdtgrp->mon.crdtgrp_list); > + > + list_add_tail(&rdtgrp->mon.crdtgrp_list, > + &new_prdtgrp->mon.crdtgrp_list); > + rdtgrp->mon.parent = new_prdtgrp; > + > + read_lock(&tasklist_lock); > + for_each_process_thread(p, t) { > + if (is_closid_match(t, prdtgrp) && is_rmid_match(t, rdtgrp)) > + WRITE_ONCE(t->closid, new_prdtgrp->closid); > + } > + read_unlock(&tasklist_lock); > + > + update_closid_rmid(cpu_online_mask, NULL);
I will need to refresh this patch now that we're back to building an update mask.
This will once again depend on https://lore.kernel.org/lkml/20221216133125.3159406-1-peternewman@google.com/
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