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drm/amdgpu: Use the TGID for trace_amdgpu_vm_update_ptes

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commit e53448e0a1efa5133c7db78f1df1f4caf177676b upstream.

The pid field corresponds to the result of gettid() in userspace.
However, userspace cannot reliably attribute PTE events to processes
with just the thread id. This patch allows userspace to easily
attribute PTE update events to specific processes by comparing this
field with the result of getpid().

For attributing events to specific threads, the thread id is also
contained in the common fields of each trace event.

Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Friedrich Vock <friedrich.vock@gmx.de>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Friedrich Vock 2023-02-02 17:21:03 +01:00 committed by Greg Kroah-Hartman
parent 6f097c2481
commit a2e60fee4b
1 changed files with 1 additions and 1 deletions
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2
drivers/gpu/drm/amd/amdgpu/amdgpu_vm_pt.c
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@ -974,7 +974,7 @@ int amdgpu_vm_ptes_update(struct amdgpu_vm_update_params *params,
trace_amdgpu_vm_update_ptes(params, frag_start, upd_end,
min(nptes, 32u), dst, incr,
upd_flags,
vm->task_info.pid,
vm->task_info.tgid,
vm->immediate.fence_context);
amdgpu_vm_pte_update_flags(params, to_amdgpu_bo_vm(pt),
cursor.level, pe_start, dst,