diff options
| author | Reinette Chatre <reinette.chatre@intel.com> | 2018-06-22 15:42:08 -0700 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2018-06-23 13:03:45 +0200 |
| commit | bb9fec69cb41380428d6b8dab3a303189a9b480a (patch) | |
| tree | 8a1d262db1ac2786cf06bad135e347719a8d37e4 /arch/x86/kernel/cpu/intel_rdt_rdtgroup.c | |
| parent | e17e733070d4ab312a35848ab248e85b78dcb3f4 (diff) | |
x86/intel_rdt: Introduce the Cache Pseudo-Locking modes
The two modes used to manage Cache Pseudo-Locked regions are introduced. A
resource group is assigned "pseudo-locksetup" mode when the user indicates
that this resource group will be used for a Cache Pseudo-Locked
region. When the Cache Pseudo-Locked region has been set up successfully
after the user wrote the requested schemata to the "schemata" file, then
the mode will automatically changed to "pseudo-locked". The user is not
able to modify the mode to "pseudo-locked" by writing "pseudo-locked" to
the "mode" file directly.
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/98d6ca129bbe7dd0932d1fcfeb3cbb65f29a8d9d.1529706536.git.reinette.chatre@intel.com
Diffstat (limited to 'arch/x86/kernel/cpu/intel_rdt_rdtgroup.c')
| -rw-r--r-- | arch/x86/kernel/cpu/intel_rdt_rdtgroup.c | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/arch/x86/kernel/cpu/intel_rdt_rdtgroup.c b/arch/x86/kernel/cpu/intel_rdt_rdtgroup.c index cde0f4114d4e..fef92b939f0f 100644 --- a/arch/x86/kernel/cpu/intel_rdt_rdtgroup.c +++ b/arch/x86/kernel/cpu/intel_rdt_rdtgroup.c @@ -161,8 +161,10 @@ enum rdtgrp_mode rdtgroup_mode_by_closid(int closid) } static const char * const rdt_mode_str[] = { - [RDT_MODE_SHAREABLE] = "shareable", - [RDT_MODE_EXCLUSIVE] = "exclusive", + [RDT_MODE_SHAREABLE] = "shareable", + [RDT_MODE_EXCLUSIVE] = "exclusive", + [RDT_MODE_PSEUDO_LOCKSETUP] = "pseudo-locksetup", + [RDT_MODE_PSEUDO_LOCKED] = "pseudo-locked", }; /** @@ -759,6 +761,13 @@ static int rdt_bit_usage_show(struct kernfs_open_file *of, case RDT_MODE_EXCLUSIVE: exclusive |= *ctrl; break; + /* + * Temporarily handle pseudo-locking enums + * to silence compile warnings until handling + * added in later patches. + */ + case RDT_MODE_PSEUDO_LOCKSETUP: + case RDT_MODE_PSEUDO_LOCKED: case RDT_NUM_MODES: WARN(1, "invalid mode for closid %d\n", i); |