[PATCH v2 0/3] drm/amdgpu: Remove in_interrupt() usage.

[Sebastian Andrzej Siewior]

On 2021-02-09 13:50:31 [+0100], Christian König wrote:
> Reviewed-by: Christian König <christian.koenig at amd.com> for the series.

Thank you.
Any chance you could give me a hand with the remaining three users
within the amdgpu driver? I don't know if the in_interrupt() check can
be limited to certain callers.
What I noticed while tracing v5.10 is this:

|             Xorg-2257    [007] d... 57261.620043: amdgpu_device_wreg: 0x699f, 0x00001bcf, 0x00000100
|  => trace_event_raw_event_amdgpu_device_wreg
|  => amdgpu_device_wreg.part.0
|  => dce110_arm_vert_intr
|  => dce110_vblank_set
|  => dm_enable_vblank
|  => drm_vblank_enable
|  => drm_vblank_get
|  => drm_wait_vblank_ioctl
|  => drm_ioctl_kernel
|  => drm_ioctl
|  => amdgpu_drm_ioctl
|  => __x64_sys_ioctl
|  => do_syscall_64
|  => entry_SYSCALL_64_after_hwframe

I think that amdgpu_device_wreg() -> amdgpu_kiq_wreg() could be invoked.
It doesn't here because amdgpu_sriov_runtime() is false.
The trace says `d' which means interrupts are disabled but
in_interrupt() will return false in this case (no IRQ/softirq).

Sebastian