arm_mpam: resctrl: Add resctrl_arch_cntr_read() & resctrl_arch_reset_cntr()

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When used in 'mbm_event' mode, ABMC emulation, resctrl uses arch hooks to
read and reset the memory bandwidth utilization (MBWU) counters.

Add these.

Signed-off-by: James Morse <james.morse@arm.com>
Signed-off-by: Ben Horgan <ben.horgan@arm.com>
Tested-by: Shaopeng Tan <tan.shaopeng@jp.fujitsu.com>
Tested-by: Fenghua Yu <fenghuay@nvidia.com>
Tested-by: Gavin Shan <gshan@redhat.com>
Reviewed-by: Jonathan Cameron <jonathan.cameron@huawei.com>
Reviewed-by: Shaopeng Tan <tan.shaopeng@jp.fujitsu.com>
Reviewed-by: Fenghua Yu <fenghuay@nvidia.com>
Reviewed-by: Gavin Shan <gshan@redhat.com>
Signed-off-by: Will Deacon <will@kernel.org>

...

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James Morse 2026-07-31 18:52:41 +01:00 • committed by Will Deacon

parent 6e0e538a75

commit a5ff6ef2d7

1 changed files with 86 additions and 13 deletions

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99

drivers/resctrl/mpam_resctrl.c

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