[PATCH v5 0/11] HMM profiler interface

Philip Yang Philip.Yang at amd.com
Tue Jun 28 14:50:09 UTC 2022

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

patch 11/11 ROCr Basic-SVM-profiler patch is based on

 * Fix multi-thead profiling support
 * Added user space usage example Thunk and ROCr patch

 * Add event helper function
 * Rebase to 5.16 kernel

 * Changes from Felix's review

 * 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(-)

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