perf/arm-cmn: Fix DTC domain detection

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[ Upstream commit e3e73f511c ]

It transpires that dtm_unit_info is another register which got shuffled
in CMN-700 without me noticing. Fix that in a way which also proactively
fixes the fragile laziness of its consumer, just in case any further
fields ever get added alongside dtc_domain.

Fixes: 23760a0144 ("perf/arm-cmn: Add CMN-700 support")
Signed-off-by: Robin Murphy <robin.murphy@arm.com>
Reviewed-by: Ilkka Koskinen <ilkka@os.amperecomputing.com>
Link: https://lore.kernel.org/r/3076ee83d0554f6939fbb6ee49ab2bdb28d8c7ee.1697824215.git.robin.murphy@arm.com
Signed-off-by: Will Deacon <will@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

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Robin Murphy 2023-10-20 18:51:25 +01:00 • committed by Greg Kroah-Hartman

parent 28fa550a49

commit c6e00bc30e

1 changed files with 14 additions and 2 deletions

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drivers/perf/arm-cmn.c

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