[PATCH 00/17] KFD interrupt and signal event handling improvements v2

[Oded Gabbay]

Hi,
I've taken the patch-set to -next.
Oded

On Sat, Oct 28, 2017 at 2:35 AM, Felix Kuehling <Felix.Kuehling at amd.com>
wrote:

> This patch series improves interrupt handling latency, signal event
> processing overhead and replaces some custom data structures with
> standard kernel data structures (idr, kfifo, waitqueue).
>
> It also increases the capacity of the number of signals that can be
> processed from 256 to 4096. This breaks ancient versions of the Thunk
> that support only 256 signal events. The current WIP-version on github
> supports both sizes. If support for ancient Thunks is considered
> important, this could be fixed by allowing mappings that are smaller
> than 4096 signals, and limiting the number of signals per process
> depending on the size of the mapped events page.
>
> v2:
>  * Don't break ABI when changing KFD_SIGNAL_EVENT_LIMIT
>  * Integrated review feedback for "Use wait_queue_t to implement event
> waiting"
>  * Integrated review feedback for "Don't dereference kfd_process.mm"
>
> Andres Rodriguez (4):
>   drm/amdkfd: use standard kernel kfifo for IH
>   drm/amdkfd: increase IH num entries to 8192
>   drm/amdkfd: wait only for IH work on IH exit
>   drm/amdkfd: use a high priority workqueue for IH work
>
> Besar Wicaksono (1):
>   drm/amdkfd: Add SDMA trap src id to the KFD isr wanted list
>
> Felix Kuehling (9):
>   drm/amdkfd: Don't dereference kfd_process.mm v2
>   drm/amdkfd: Clean up kfd_wait_on_events
>   drm/amdkfd: Fix event destruction with pending waiters
>   drm/amdkfd: remove redundant kfd_event_waiter.input_index
>   drm/amdkfd: Use wait_queue_t to implement event waiting
>   drm/amdkfd: Simplify events page allocator
>   drm/amdkfd: Simplify event ID and signal slot management
>   drm/amdkfd: Use IH context ID for signal lookup
>   drm/amdkfd: Make event limit dependent on user mode mapping size
>
> Oded Gabbay (1):
>   drm/amdkfd: increase limit of signal events to 4096 per process
>
> Sean Keely (2):
>   drm/amdkfd: Short cut for kfd_wait_on_events without waiting
>   drm/amdkfd: Fix scheduler race in kfd_wait_on_events sleep loop
>
>  drivers/gpu/drm/amd/amdkfd/cik_event_interrupt.c |   8 +-
>  drivers/gpu/drm/amd/amdkfd/cik_int.h             |   3 +-
>  drivers/gpu/drm/amd/amdkfd/kfd_chardev.c         |   5 +-
>  drivers/gpu/drm/amd/amdkfd/kfd_device.c          |   2 +-
>  drivers/gpu/drm/amd/amdkfd/kfd_events.c          | 615
> +++++++++++------------
>  drivers/gpu/drm/amd/amdkfd/kfd_events.h          |  18 +-
>  drivers/gpu/drm/amd/amdkfd/kfd_interrupt.c       |  83 ++-
>  drivers/gpu/drm/amd/amdkfd/kfd_priv.h            |  33 +-
>  drivers/gpu/drm/amd/amdkfd/kfd_process.c         |   1 -
>  include/uapi/linux/kfd_ioctl.h                   |   2 +-
>  10 files changed, 350 insertions(+), 420 deletions(-)
>
> --
> 2.7.4
>
>
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