Build on arm64 allmodconfig failed with:
| depmod: ERROR: Cycle detected: arm_cspmu -> nvidia_cspmu -> arm_cspmu
| depmod: ERROR: Found 2 modules in dependency cycles!
The arm_cspmu.c provides standard functions to operate the PMU and the
vendor code provides vendor specific attributes. Both need to be built as
single kernel module.
Update the makefile to compile sources under arm_cspmu into one module.
Signed-off-by: Besar Wicaksono <bwicaksono@nvidia.com>
Reviewed-and-Tested-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Link: https://lore.kernel.org/r/20221116203952.34168-1-bwicaksono@nvidia.com
Signed-off-by: Will Deacon <will@kernel.org>
Building on x86_64 allmodconfig failed:
| drivers/perf/arm_cspmu/arm_cspmu.c:1114:29: error: implicit
| declaration of function 'get_acpi_id_for_cpu'
get_acpi_id_for_cpu is a helper function from ARM64.
Fix by adding ARM64 dependency.
Signed-off-by: Besar Wicaksono <bwicaksono@nvidia.com>
Reviewed-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Link: https://lore.kernel.org/r/20221116190455.55651-1-bwicaksono@nvidia.com
Signed-off-by: Will Deacon <will@kernel.org>
Building an arm64 allmodconfig target results in the following failure
from modpost:
| ERROR: modpost: missing MODULE_LICENSE() in drivers/perf/arm_cspmu/arm_cspmu.o
| ERROR: modpost: missing MODULE_LICENSE() in drivers/perf/arm_cspmu/nvidia_cspmu.o
| make[1]: *** [scripts/Makefile.modpost:126: Module.symvers] Error 1
| make: *** [Makefile:1944: modpost] Error 2
Add the missing MODULE_LICENSE() macros, following the license of the
source files and symbol exports.
Signed-off-by: Will Deacon <will@kernel.org>
Add support for NVIDIA System Cache Fabric (SCF) and Memory Control
Fabric (MCF) PMU attributes for CoreSight PMU implementation in
NVIDIA devices.
Acked-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Signed-off-by: Besar Wicaksono <bwicaksono@nvidia.com>
Link: https://lore.kernel.org/r/20221111222330.48602-3-bwicaksono@nvidia.com
Signed-off-by: Will Deacon <will@kernel.org>
Add support for ARM CoreSight PMU driver framework and interfaces.
The driver provides generic implementation to operate uncore PMU based
on ARM CoreSight PMU architecture. The driver also provides interface
to get vendor/implementation specific information, for example event
attributes and formating.
The specification used in this implementation can be found below:
* ACPI Arm Performance Monitoring Unit table:
https://developer.arm.com/documentation/den0117/latest
* ARM Coresight PMU architecture:
https://developer.arm.com/documentation/ihi0091/latest
Reviewed-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Signed-off-by: Besar Wicaksono <bwicaksono@nvidia.com>
Link: https://lore.kernel.org/r/20221111222330.48602-2-bwicaksono@nvidia.com
Signed-off-by: Will Deacon <will@kernel.org>
Besar Wicaksono