bybrooklyn/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2026-04-18 14:53:58 -04:00
Code Issues Packages Projects Releases Wiki Activity

drm/xe: Add properties line to VM snapshot capture

Browse Source 
Add properties line to VM snapshot capture which includes additional
information about VMA being dumped. This is helpful for debug purposes
but also to build a robust GPU hang replay tool.

The current format is:

[<vma address>]: <permissions>|<type>

Permissions has two options, either "read_only" or "read_write".

Type has two options, either "userptr" or "bo".

Cc: José Roberto de Souza <jose.souza@intel.com>
Signed-off-by: Matthew Brost <matthew.brost@intel.com>
Reviewed-by: Jonathan Cavitt <jonathan.cavitt@intel.com>
Link: https://patch.msgid.link/20251126185952.546277-2-matthew.brost@intel.com
This commit is contained in:
Matthew Brost
2025-11-26 10:59:44 -08:00
parent 8b55021453
commit eafc150549
1 changed files with 12 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

12
drivers/gpu/drm/xe/xe_vm.c
View File

@@ -4047,6 +4047,9 @@ struct xe_vm_snapshot {
struct {
u64 ofs, bo_ofs;
unsigned long len;
#define XE_VM_SNAP_FLAG_USERPTR BIT(0)
#define XE_VM_SNAP_FLAG_READ_ONLY BIT(1)
unsigned long flags;
struct xe_bo *bo;
void *data;
struct mm_struct *mm;
@@ -4087,6 +4090,8 @@ struct xe_vm_snapshot *xe_vm_snapshot_capture(struct xe_vm *vm)
snap->snap[i].ofs = xe_vma_start(vma);
snap->snap[i].len = xe_vma_size(vma);
snap->snap[i].flags = xe_vma_read_only(vma) ?
XE_VM_SNAP_FLAG_READ_ONLY : 0;
if (bo) {
snap->snap[i].bo = xe_bo_get(bo);
snap->snap[i].bo_ofs = xe_vma_bo_offset(vma);
@@ -4100,6 +4105,7 @@ struct xe_vm_snapshot *xe_vm_snapshot_capture(struct xe_vm *vm)
snap->snap[i].data = ERR_PTR(-EFAULT);
snap->snap[i].bo_ofs = xe_vma_userptr(vma);
snap->snap[i].flags |= XE_VM_SNAP_FLAG_USERPTR;
} else {
snap->snap[i].data = ERR_PTR(-ENOENT);
}
@@ -4169,6 +4175,12 @@ void xe_vm_snapshot_print(struct xe_vm_snapshot *snap, struct drm_printer *p)
for (i = 0; i < snap->num_snaps; i++) {
drm_printf(p, "[%llx].length: 0x%lx\n", snap->snap[i].ofs, snap->snap[i].len);
drm_printf(p, "[%llx].properties: %s|%s\n", snap->snap[i].ofs,
snap->snap[i].flags & XE_VM_SNAP_FLAG_READ_ONLY ?
"read_only" : "read_write",
snap->snap[i].flags & XE_VM_SNAP_FLAG_USERPTR ?
"userptr" : "bo");
if (IS_ERR(snap->snap[i].data)) {
drm_printf(p, "[%llx].error: %li\n", snap->snap[i].ofs,
PTR_ERR(snap->snap[i].data));