From bbcee99b67c5a8cc4e8037d561be9ed293961fd3 Mon Sep 17 00:00:00 2001 From: Reinette Chatre Date: Fri, 22 Jun 2018 15:42:14 -0700 Subject: [PATCH] x86/intel_rdt: Add check to determine if monitoring in progress When a resource group is pseudo-locked it is orphaned without a class of service associated with it. We thus do not want any monitoring in progress on a resource group that will be used for pseudo-locking. Introduce a test that can be used to determine if pseudo-locking in progress on a resource group. Temporarily mark it as unused to avoid compile warnings until it is used. Signed-off-by: Reinette Chatre Signed-off-by: Thomas Gleixner Cc: fenghua.yu@intel.com Cc: tony.luck@intel.com Cc: vikas.shivappa@linux.intel.com Cc: gavin.hindman@intel.com Cc: jithu.joseph@intel.com Cc: dave.hansen@intel.com Cc: hpa@zytor.com Link: https://lkml.kernel.org/r/14fd9494f87ca72a213b3a197d1172d4e66ae196.1529706536.git.reinette.chatre@intel.com --- arch/x86/kernel/cpu/intel_rdt_pseudo_lock.c | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/arch/x86/kernel/cpu/intel_rdt_pseudo_lock.c b/arch/x86/kernel/cpu/intel_rdt_pseudo_lock.c index dc79b3090ac52..8693dbe602a29 100644 --- a/arch/x86/kernel/cpu/intel_rdt_pseudo_lock.c +++ b/arch/x86/kernel/cpu/intel_rdt_pseudo_lock.c @@ -13,6 +13,19 @@ #include "intel_rdt.h" +/** + * rdtgroup_monitor_in_progress - Test if monitoring in progress + * @r: resource group being queried + * + * Return: 1 if monitor groups have been created for this resource + * group, 0 otherwise. + */ +static int __attribute__ ((unused)) +rdtgroup_monitor_in_progress(struct rdtgroup *rdtgrp) +{ + return !list_empty(&rdtgrp->mon.crdtgrp_list); +} + /** * rdtgroup_locksetup_user_restrict - Restrict user access to group * @rdtgrp: resource group needing access restricted