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x86/intel_rdt: Introduce pseudo-locked region

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A pseudo-locked region is introduced representing an instance of a
pseudo-locked cache region. Each cache instance (domain) can support one
pseudo-locked region. Similarly a resource group can be used for one
pseudo-locked region.

Include a pointer to a pseudo-locked region from the domain and resource
group structures.

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/9f69eb159051067703bcbc714de62e69874d5dee.1529706536.git.reinette.chatre@intel.com
This commit is contained in:
Reinette Chatre 2018-06-22 15:42:15 -07:00 committed by Thomas Gleixner
parent bbcee99b67
commit e8140a2d13
1 changed files with 41 additions and 23 deletions
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64
arch/x86/kernel/cpu/intel_rdt.h
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@ -122,6 +122,20 @@ struct mongroup {
u32 rmid;
};
/**
* struct pseudo_lock_region - pseudo-lock region information
* @r: RDT resource to which this pseudo-locked region
* belongs
* @d: RDT domain to which this pseudo-locked region
* belongs
* @cbm: bitmask of the pseudo-locked region
*/
struct pseudo_lock_region {
struct rdt_resource *r;
struct rdt_domain *d;
u32 cbm;
};
/**
* struct rdtgroup - store rdtgroup's data in resctrl file system.
* @kn: kernfs node
@ -135,17 +149,19 @@ struct mongroup {
* monitor only or ctrl_mon group
* @mon: mongroup related data
* @mode: mode of resource group
* @plr: pseudo-locked region
*/
struct rdtgroup {
struct kernfs_node *kn;
struct list_head rdtgroup_list;
u32 closid;
struct cpumask cpu_mask;
int flags;
atomic_t waitcount;
enum rdt_group_type type;
struct mongroup mon;
enum rdtgrp_mode mode;
struct kernfs_node *kn;
struct list_head rdtgroup_list;
u32 closid;
struct cpumask cpu_mask;
int flags;
atomic_t waitcount;
enum rdt_group_type type;
struct mongroup mon;
enum rdtgrp_mode mode;
struct pseudo_lock_region *plr;
};
/* rdtgroup.flags */
@ -246,22 +262,24 @@ struct mbm_state {
* @mbps_val: When mba_sc is enabled, this holds the bandwidth in MBps
* @new_ctrl: new ctrl value to be loaded
* @have_new_ctrl: did user provide new_ctrl for this domain
* @plr: pseudo-locked region (if any) associated with domain
*/
struct rdt_domain {
struct list_head list;
int id;
struct cpumask cpu_mask;
unsigned long *rmid_busy_llc;
struct mbm_state *mbm_total;
struct mbm_state *mbm_local;
struct delayed_work mbm_over;
struct delayed_work cqm_limbo;
int mbm_work_cpu;
int cqm_work_cpu;
u32 *ctrl_val;
u32 *mbps_val;
u32 new_ctrl;
bool have_new_ctrl;
struct list_head list;
int id;
struct cpumask cpu_mask;
unsigned long *rmid_busy_llc;
struct mbm_state *mbm_total;
struct mbm_state *mbm_local;
struct delayed_work mbm_over;
struct delayed_work cqm_limbo;
int mbm_work_cpu;
int cqm_work_cpu;
u32 *ctrl_val;
u32 *mbps_val;
u32 new_ctrl;
bool have_new_ctrl;
struct pseudo_lock_region *plr;
};
/**