summaryrefslogtreecommitdiff
path: root/include/linux/resctrl.h
diff options
context:
space:
mode:
authorJames Morse <james.morse@arm.com>2021-07-28 17:06:26 +0000
committerBorislav Petkov <bp@suse.de>2021-08-11 16:32:32 +0200
commite8f7282552b902af3bd1f07a87d657b7f5f12ab8 (patch)
tree3bd9c204b18cc18078144feaba4371b5c05bdb7f /include/linux/resctrl.h
parente198fde3fe0892a5d1e28c0e29f1eebfb6f8c1cd (diff)
x86/resctrl: Group staged configuration into a separate struct
When configuration changes are made, the new value is written to struct rdt_domain's new_ctrl field and the have_new_ctrl flag is set. Later new_ctrl is copied to hardware by a call to update_domains(). Once the CDP resources are merged, there will be one new_ctrl field in use by two struct resctrl_schema requiring a per-schema IPI to copy the value to hardware. Move new_ctrl and have_new_ctrl into a new struct resctrl_staged_config. Before the CDP resources can be merged, struct rdt_domain will need an array of these, one per type of configuration. Using the type as an index to the array will ensure that a schema configuration string can't specify the same domain twice. Signed-off-by: James Morse <james.morse@arm.com> Signed-off-by: Borislav Petkov <bp@suse.de> Reviewed-by: Jamie Iles <jamie@nuviainc.com> Reviewed-by: Reinette Chatre <reinette.chatre@intel.com> Tested-by: Babu Moger <babu.moger@amd.com> Link: https://lkml.kernel.org/r/20210728170637.25610-14-james.morse@arm.com
Diffstat (limited to 'include/linux/resctrl.h')
-rw-r--r--include/linux/resctrl.h16
1 files changed, 12 insertions, 4 deletions
diff --git a/include/linux/resctrl.h b/include/linux/resctrl.h
index e482ce790ce2..ff7f7d7e1348 100644
--- a/include/linux/resctrl.h
+++ b/include/linux/resctrl.h
@@ -28,12 +28,20 @@ enum resctrl_conf_type {
};
/**
+ * struct resctrl_staged_config - parsed configuration to be applied
+ * @new_ctrl: new ctrl value to be loaded
+ * @have_new_ctrl: whether the user provided new_ctrl is valid
+ */
+struct resctrl_staged_config {
+ u32 new_ctrl;
+ bool have_new_ctrl;
+};
+
+/**
* struct rdt_domain - group of CPUs sharing a resctrl resource
* @list: all instances of this resource
* @id: unique id for this instance
* @cpu_mask: which CPUs share this resource
- * @new_ctrl: new ctrl value to be loaded
- * @have_new_ctrl: did user provide new_ctrl for this domain
* @rmid_busy_llc: bitmap of which limbo RMIDs are above threshold
* @mbm_total: saved state for MBM total bandwidth
* @mbm_local: saved state for MBM local bandwidth
@@ -42,13 +50,12 @@ enum resctrl_conf_type {
* @mbm_work_cpu: worker CPU for MBM h/w counters
* @cqm_work_cpu: worker CPU for CQM h/w counters
* @plr: pseudo-locked region (if any) associated with domain
+ * @staged_config: parsed configuration to be applied
*/
struct rdt_domain {
struct list_head list;
int id;
struct cpumask cpu_mask;
- u32 new_ctrl;
- bool have_new_ctrl;
unsigned long *rmid_busy_llc;
struct mbm_state *mbm_total;
struct mbm_state *mbm_local;
@@ -57,6 +64,7 @@ struct rdt_domain {
int mbm_work_cpu;
int cqm_work_cpu;
struct pseudo_lock_region *plr;
+ struct resctrl_staged_config staged_config;
};
/**