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| author | James Morse <james.morse@arm.com> | 2026-03-13 17:45:51 +0300 |
|---|---|---|
| committer | James Morse <james.morse@arm.com> | 2026-03-27 18:29:27 +0300 |
| commit | 09e61daf8e96b9bdb04dd112bdecf9382fd3f919 (patch) | |
| tree | 6914165fc0390184f419a1a7f569e2f45de904e7 /include | |
| parent | 67faed4ccb4f4b8055f50e9cc5670f1fc09ea287 (diff) | |
| download | linux-09e61daf8e96b9bdb04dd112bdecf9382fd3f919.tar.xz | |
arm_mpam: resctrl: Add boilerplate cpuhp and domain allocation
resctrl has its own data structures to describe its resources. We can't use
these directly as we play tricks with the 'MBA' resource, picking the MPAM
controls or monitors that best apply. We may export the same component as
both L3 and MBA.
Add mpam_resctrl_res[] as the array of class->resctrl mappings we are
exporting, and add the cpuhp hooks that allocated and free the resctrl
domain structures. Only the mpam control feature are considered here and
monitor support will be added later.
While we're here, plumb in a few other obvious things.
CONFIG_ARM_CPU_RESCTRL is used to allow this code to be built even though
it can't yet be linked against resctrl.
Tested-by: Gavin Shan <gshan@redhat.com>
Tested-by: Shaopeng Tan <tan.shaopeng@jp.fujitsu.com>
Tested-by: Peter Newman <peternewman@google.com>
Tested-by: Zeng Heng <zengheng4@huawei.com>
Tested-by: Punit Agrawal <punit.agrawal@oss.qualcomm.com>
Tested-by: Jesse Chick <jessechick@os.amperecomputing.com>
Reviewed-by: Zeng Heng <zengheng4@huawei.com>
Reviewed-by: Shaopeng Tan <tan.shaopeng@jp.fujitsu.com>
Reviewed-by: Jonathan Cameron <jonathan.cameron@huawei.com>
Reviewed-by: Gavin Shan <gshan@redhat.com>
Co-developed-by: Ben Horgan <ben.horgan@arm.com>
Signed-off-by: Ben Horgan <ben.horgan@arm.com>
Signed-off-by: James Morse <james.morse@arm.com>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/arm_mpam.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/include/linux/arm_mpam.h b/include/linux/arm_mpam.h index 7f00c5285a32..2c7d1413a401 100644 --- a/include/linux/arm_mpam.h +++ b/include/linux/arm_mpam.h @@ -49,6 +49,9 @@ static inline int mpam_ris_create(struct mpam_msc *msc, u8 ris_idx, } #endif +bool resctrl_arch_alloc_capable(void); +bool resctrl_arch_mon_capable(void); + /** * mpam_register_requestor() - Register a requestor with the MPAM driver * @partid_max: The maximum PARTID value the requestor can generate. |