diff options
| author | Reinette Chatre <reinette.chatre@intel.com> | 2018-06-22 15:42:00 -0700 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2018-06-23 13:03:42 +0200 |
| commit | 414dd2b4732949ddc972c2592a13c799434249c6 (patch) | |
| tree | 4c3d628b6c17a6ed548355284704a62665e40afe | |
| parent | 95f0b77efa5749f19e7acfedcb8521da4b13ed0e (diff) | |
x86/intel_rdt: Introduce new "exclusive" mode
At the moment all allocations are shareable. There is no way for a user to
designate that an allocation associated with a resource group cannot be
shared by another.
Introduce the new mode "exclusive". When a resource group is marked as such
it implies that no overlap is allowed between its allocation and that of
another resource group.
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/f6d24672a4280fe3b24cd2da9b5f50214439c1af.1529706536.git.reinette.chatre@intel.com
| -rw-r--r-- | arch/x86/kernel/cpu/intel_rdt.h | 2 | ||||
| -rw-r--r-- | arch/x86/kernel/cpu/intel_rdt_rdtgroup.c | 1 |
2 files changed, 3 insertions, 0 deletions
diff --git a/arch/x86/kernel/cpu/intel_rdt.h b/arch/x86/kernel/cpu/intel_rdt.h index f2fbf4059b3f..c9033fd774d5 100644 --- a/arch/x86/kernel/cpu/intel_rdt.h +++ b/arch/x86/kernel/cpu/intel_rdt.h @@ -83,6 +83,7 @@ enum rdt_group_type { /** * enum rdtgrp_mode - Mode of a RDT resource group * @RDT_MODE_SHAREABLE: This resource group allows sharing of its allocations + * @RDT_MODE_EXCLUSIVE: No sharing of this resource group's allocations allowed * * The mode of a resource group enables control over the allowed overlap * between allocations associated with different resource groups (classes @@ -91,6 +92,7 @@ enum rdt_group_type { */ enum rdtgrp_mode { RDT_MODE_SHAREABLE = 0, + RDT_MODE_EXCLUSIVE, /* Must be last */ RDT_NUM_MODES, diff --git a/arch/x86/kernel/cpu/intel_rdt_rdtgroup.c b/arch/x86/kernel/cpu/intel_rdt_rdtgroup.c index 80ac09cf978b..910febef55e8 100644 --- a/arch/x86/kernel/cpu/intel_rdt_rdtgroup.c +++ b/arch/x86/kernel/cpu/intel_rdt_rdtgroup.c @@ -161,6 +161,7 @@ enum rdtgrp_mode rdtgroup_mode_by_closid(int closid) static const char * const rdt_mode_str[] = { [RDT_MODE_SHAREABLE] = "shareable", + [RDT_MODE_EXCLUSIVE] = "exclusive", }; /** |