This is a note to let you know that I've just added the patch titled
drm/amdgpu: Use the TGID for trace_amdgpu_vm_update_ptes
to the 6.1-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
drm-amdgpu-use-the-tgid-for-trace_amdgpu_vm_update_ptes.patch
and it can be found in the queue-6.1 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From e53448e0a1efa5133c7db78f1df1f4caf177676b Mon Sep 17 00:00:00 2001
From: Friedrich Vock <friedrich.vock@xxxxxx>
Date: Thu, 2 Feb 2023 17:21:03 +0100
Subject: drm/amdgpu: Use the TGID for trace_amdgpu_vm_update_ptes
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From: Friedrich Vock <friedrich.vock@xxxxxx>
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@xxxxxxx>
Signed-off-by: Friedrich Vock <friedrich.vock@xxxxxx>
Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_vm_pt.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm_pt.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm_pt.c
@@ -974,7 +974,7 @@ int amdgpu_vm_ptes_update(struct amdgpu_
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,
Patches currently in stable-queue which might be from friedrich.vock@xxxxxx are
queue-6.1/drm-amdgpu-use-the-tgid-for-trace_amdgpu_vm_update_ptes.patch
