This implements KFD profiling APIs to expose HMM migration and recoverable page fault profiling data. The ROCm profiler will shared link with application, to collect and expose the profiling data to application developers to tune the applications based on how the address range attributes affect the behavior and performance. Kernel perf and ftrace requires superuser permission to collect data, it is not suitable for ROCm profiler.
The profiling data is per process per device event uses the existing SMI (system management interface) event API. Each event log is one line of text with the event specific information. For user space usage example: patch 9/11, 10/11 Thunk libhsakmt is based on https://github.com/RadeonOpenCompute/ROCT-Thunk-Interface patch 11/11 ROCr Basic-SVM-profiler patch is based on https://github.com/RadeonOpenCompute/ROCR-Runtime v5: * Fix multi-thead profiling support * Added user space usage example Thunk and ROCr patch v4: * Add event helper function * Rebase to 5.16 kernel v3: * Changes from Felix's review v2: * Keep existing events behaviour * Use ktime_get_boottime_ns() as timestamp to correlate with other APIs * Use compact message layout, stick with existing message convention * Add unmap from GPU event Philip Yang (8): drm/amdkfd: Add KFD SMI event IDs and triggers drm/amdkfd: Enable per process SMI event drm/amdkfd: Add GPU recoverable fault SMI event drm/amdkfd: Add migration SMI event drm/amdkfd: Add user queue eviction restore SMI event drm/amdkfd: Add unmap from GPU SMI event drm/amdkfd: Asynchronously free smi_client drm/amdkfd: Bump KFD API version for SMI profiling event drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.h | 2 +- .../gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c | 12 +- drivers/gpu/drm/amd/amdkfd/kfd_chardev.c | 4 +- drivers/gpu/drm/amd/amdkfd/kfd_device.c | 4 +- drivers/gpu/drm/amd/amdkfd/kfd_migrate.c | 53 +++++-- drivers/gpu/drm/amd/amdkfd/kfd_migrate.h | 5 +- drivers/gpu/drm/amd/amdkfd/kfd_priv.h | 2 +- drivers/gpu/drm/amd/amdkfd/kfd_process.c | 15 +- drivers/gpu/drm/amd/amdkfd/kfd_smi_events.c | 134 ++++++++++++++++-- drivers/gpu/drm/amd/amdkfd/kfd_smi_events.h | 21 ++- drivers/gpu/drm/amd/amdkfd/kfd_svm.c | 64 ++++++--- drivers/gpu/drm/amd/amdkfd/kfd_svm.h | 2 +- include/uapi/linux/kfd_ioctl.h | 40 +++++- 13 files changed, 293 insertions(+), 65 deletions(-)
