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x86/intel_rdt: Add check to determine if monitoring in progress

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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
This commit is contained in:
Reinette Chatre 2018-06-22 15:42:14 -07:00 committed by Thomas Gleixner
parent 2a5d76a4fc
commit bbcee99b67
1 changed files with 13 additions and 0 deletions
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13
arch/x86/kernel/cpu/intel_rdt_pseudo_lock.c
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@ -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