diff options
| author | Ben Horgan <ben.horgan@arm.com> | 2026-03-13 14:46:00 +0000 |
|---|---|---|
| committer | James Morse <james.morse@arm.com> | 2026-03-27 15:30:39 +0000 |
| commit | 3e9b35823aabcb85cc039960256426e50f1fd601 (patch) | |
| tree | 9667e18b86eb11dd4c4e0845e4d95e9a83ccd174 /include/linux | |
| parent | 80d147d293130ee3c8a395cbbea1813e26ab9a1b (diff) | |
arm_mpam: resctrl: Add rmid index helpers
Because MPAM's pmg aren't identical to RDT's rmid, resctrl handles some
data structures by index. This allows x86 to map indexes to RMID, and MPAM
to map them to partid-and-pmg.
Add the helpers to do this.
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>
Suggested-by: James Morse <james.morse@arm.com>
Signed-off-by: Ben Horgan <ben.horgan@arm.com>
Signed-off-by: James Morse <james.morse@arm.com>
Diffstat (limited to 'include/linux')
| -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 d329b1dc148b..7d23c90f077d 100644 --- a/include/linux/arm_mpam.h +++ b/include/linux/arm_mpam.h @@ -58,6 +58,9 @@ void resctrl_arch_set_cpu_default_closid_rmid(int cpu, u32 closid, u32 rmid); void resctrl_arch_sched_in(struct task_struct *tsk); bool resctrl_arch_match_closid(struct task_struct *tsk, u32 closid); bool resctrl_arch_match_rmid(struct task_struct *tsk, u32 closid, u32 rmid); +u32 resctrl_arch_rmid_idx_encode(u32 closid, u32 rmid); +void resctrl_arch_rmid_idx_decode(u32 idx, u32 *closid, u32 *rmid); +u32 resctrl_arch_system_num_rmid_idx(void); /** * mpam_register_requestor() - Register a requestor with the MPAM driver |