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| author | Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> | 2025-08-19 14:10:34 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-11-13 15:37:08 -0500 |
| commit | 35b9336260968a70f9425566638aea879a1034f0 (patch) | |
| tree | fa22a2c6448d00f56e6b9ec06e99649efea2dc6c /drivers/platform | |
| parent | 9967cbc2a34d4fa5615023ef5a5b141f4d0f6997 (diff) | |
| download | linux-35b9336260968a70f9425566638aea879a1034f0.tar.gz linux-35b9336260968a70f9425566638aea879a1034f0.tar.bz2 linux-35b9336260968a70f9425566638aea879a1034f0.zip | |
platform/x86/intel-uncore-freq: Fix warning in partitioned system
[ Upstream commit 6d47b4f08436cb682fb2644e6265a3897fd42a77 ]
A partitioned system configured with only one package and one compute
die, warning will be generated for duplicate sysfs entry. This typically
occurs during the platform bring-up phase.
Partitioned systems expose dies, equivalent to TPMI compute domains,
through the CPUID. Each partitioned system must contains at least one
compute die per partition, resulting in a minimum of two dies per
package. Hence the function topology_max_dies_per_package() returns at
least two, and the condition "topology_max_dies_per_package() > 1"
prevents the creation of a root domain.
In this case topology_max_dies_per_package() will return 1 and root
domain will be created for partition 0 and a duplicate sysfs warning
for partition 1 as both partitions have same package ID.
To address this also check for non zero partition in addition to
topology_max_dies_per_package() > 1.
Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Link: https://lore.kernel.org/r/20250819211034.3776284-1-srinivas.pandruvada@linux.intel.com
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers/platform')
| -rw-r--r-- | drivers/platform/x86/intel/uncore-frequency/uncore-frequency-tpmi.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/platform/x86/intel/uncore-frequency/uncore-frequency-tpmi.c b/drivers/platform/x86/intel/uncore-frequency/uncore-frequency-tpmi.c index bfcf92aa4d69..3e531fd1c629 100644 --- a/drivers/platform/x86/intel/uncore-frequency/uncore-frequency-tpmi.c +++ b/drivers/platform/x86/intel/uncore-frequency/uncore-frequency-tpmi.c @@ -638,7 +638,7 @@ static int uncore_probe(struct auxiliary_device *auxdev, const struct auxiliary_ auxiliary_set_drvdata(auxdev, tpmi_uncore); - if (topology_max_dies_per_package() > 1) + if (topology_max_dies_per_package() > 1 || plat_info->partition) return 0; tpmi_uncore->root_cluster.root_domain = true; |