diff options
| author | Robin Murphy <robin.murphy@arm.com> | 2025-03-18 14:32:10 +0000 |
|---|---|---|
| committer | Will Deacon <will@kernel.org> | 2025-04-17 14:08:10 +0100 |
| commit | 674cd7740257a27e3f81a0b66c9f6e65912eaca6 (patch) | |
| tree | e3711da6a1e78352965bed81928890ce7944779f | |
| parent | 0af2f6be1b4281385b618cb86ad946eded089ac8 (diff) | |
perf/arm-cmn: Remove CMN-600 DTC domain special case
The special case for trying to infer the DTC domain for DTC-adjacent
nodes on CMN-600 is fragile and buggy - currently resulting in subtly
messed up DTC counter allocation - and the theoretical benefit it
offers to a tiny minority of use-cases arguably doesn't outweigh the
inconsistency it offers to others anyway. Just get rid of it.
Fixes: ab33c66fd8f1 ("perf/arm-cmn: Enable per-DTC counter allocation")
Signed-off-by: Robin Murphy <robin.murphy@arm.com>
Link: https://lore.kernel.org/r/67985e39f53b56385d79a4f1264cf7f9cacedb58.1742308248.git.robin.murphy@arm.com
Signed-off-by: Will Deacon <will@kernel.org>
| -rw-r--r-- | drivers/perf/arm-cmn.c | 7 |
1 files changed, 0 insertions, 7 deletions
diff --git a/drivers/perf/arm-cmn.c b/drivers/perf/arm-cmn.c index d4fe30ff225b..92720592fee9 100644 --- a/drivers/perf/arm-cmn.c +++ b/drivers/perf/arm-cmn.c @@ -2167,13 +2167,6 @@ static int arm_cmn_init_dtcs(struct arm_cmn *cmn) cmn->xps = arm_cmn_node(cmn, CMN_TYPE_XP); - if (cmn->part == PART_CMN600 && cmn->num_dtcs > 1) { - /* We do at least know that a DTC's XP must be in that DTC's domain */ - dn = arm_cmn_node(cmn, CMN_TYPE_DTC); - for (int i = 0; i < cmn->num_dtcs; i++) - arm_cmn_node_to_xp(cmn, dn + i)->dtc = i; - } - for (dn = cmn->dns; dn->type; dn++) { if (dn->type == CMN_TYPE_XP) continue; |