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| author |   James Morse <james.morse@arm.com> | 2021-07-28 17:06:26 +0000 |
|---|---|---|
| committer |   Borislav Petkov <bp@suse.de> | 2021-08-11 16:32:32 +0200 |
| commit | e8f7282552b902af3bd1f07a87d657b7f5f12ab8 (patch) | |
| tree | 3bd9c204b18cc18078144feaba4371b5c05bdb7f /include/linux/resctrl.h | |
| parent | x86/resctrl: Move the schemata names into struct resctrl_schema (diff) | |
| download | wireguard-linux-e8f7282552b902af3bd1f07a87d657b7f5f12ab8.tar.xz wireguard-linux-e8f7282552b902af3bd1f07a87d657b7f5f12ab8.zip | |
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.h | 16 |
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; }; /** |