diff options
| author | James Morse <james.morse@arm.com> | 2025-11-19 12:22:47 +0000 |
|---|---|---|
| committer | Catalin Marinas <catalin.marinas@arm.com> | 2025-11-19 18:34:21 +0000 |
| commit | c10ca83a778304f976cbea60bbbb2f1fac003f5c (patch) | |
| tree | b116ddc46163961519caf954dcfad23e05b503c1 /drivers/resctrl/mpam_internal.h | |
| parent | 8c90dc68a5de4349ef9ba51449fb0a29cd690547 (diff) | |
arm_mpam: Merge supported features during mpam_enable() into mpam_class
To make a decision about whether to expose an mpam class as
a resctrl resource we need to know its overall supported
features and properties.
Once we've probed all the resources, we can walk the tree
and produce overall values by merging the bitmaps. This
eliminates features that are only supported by some MSC
that make up a component or class.
If bitmap properties are mismatched within a component we
cannot support the mismatched feature.
Care has to be taken as vMSC may hold mismatched RIS.
Signed-off-by: James Morse <james.morse@arm.com>
Reviewed-by: Ben Horgan <ben.horgan@arm.com>
Reviewed-by: Jonathan Cameron <jonathan.cameron@huawei.com>
Reviewed-by: Fenghua Yu <fenghuay@nvidia.com>
Reviewed-by: Gavin Shan <gshan@redhat.com>
Reviewed-by: Shaopeng Tan <tan.shaopeng@jp.fujitsu.com>
Tested-by: Fenghua Yu <fenghuay@nvidia.com>
Tested-by: Shaopeng Tan <tan.shaopeng@jp.fujitsu.com>
Tested-by: Peter Newman <peternewman@google.com>
Tested-by: Carl Worth <carl@os.amperecomputing.com>
Tested-by: Gavin Shan <gshan@redhat.com>
Tested-by: Zeng Heng <zengheng4@huawei.com>
Tested-by: Hanjun Guo <guohanjun@huawei.com>
Signed-off-by: Ben Horgan <ben.horgan@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Diffstat (limited to 'drivers/resctrl/mpam_internal.h')
| -rw-r--r-- | drivers/resctrl/mpam_internal.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/resctrl/mpam_internal.h b/drivers/resctrl/mpam_internal.h index cdaa019367e9..4749ac223adc 100644 --- a/drivers/resctrl/mpam_internal.h +++ b/drivers/resctrl/mpam_internal.h @@ -140,6 +140,7 @@ struct mpam_props { #define mpam_has_feature(_feat, x) test_bit(_feat, (x)->features) #define mpam_set_feature(_feat, x) set_bit(_feat, (x)->features) +#define mpam_clear_feature(_feat, x) clear_bit(_feat, (x)->features) struct mpam_class { /* mpam_components in this class */ @@ -147,6 +148,8 @@ struct mpam_class { cpumask_t affinity; + struct mpam_props props; + u32 nrdy_usec; u8 level; enum mpam_class_types type; |