Commit bbcee99b authored Jun 22, 2018 by Reinette Chatre Committed by Thomas Gleixner Jun 23, 2018

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 <reinette.chatre@intel.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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

parent 2a5d76a4

arch/x86/kernel/cpu/intel_rdt_pseudo_lock.c

+13 −0

Original line number	Diff line number	Diff line
		@@ -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