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drm/msm: Show process names in gem_describe

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In $debugfs/gem we already show any vma(s) associated with an object.
Also show process names if the vma's address space is a per-process
address space.

Signed-off-by: Rob Clark <robdclark@chromium.org>
Reviewed-by: Jordan Crouse <jcrouse@codeaurora.org>
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
This commit is contained in:
Rob Clark
2020-08-17 15:01:45 -07:00
parent 84c31ee16f
commit 25faf2f2e0
6 changed files with 34 additions and 9 deletions
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25
drivers/gpu/drm/msm/msm_gem.c
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@@ -842,11 +842,28 @@ void msm_gem_describe(struct drm_gem_object *obj, struct seq_file *m)
seq_puts(m, " vmas:");
list_for_each_entry(vma, &msm_obj->vmas, list)
seq_printf(m, " [%s: %08llx,%s,inuse=%d]",
vma->aspace != NULL ? vma->aspace->name : NULL,
vma->iova, vma->mapped ? "mapped" : "unmapped",
list_for_each_entry(vma, &msm_obj->vmas, list) {
const char *name, *comm;
if (vma->aspace) {
struct msm_gem_address_space *aspace = vma->aspace;
struct task_struct *task =
get_pid_task(aspace->pid, PIDTYPE_PID);
if (task) {
comm = kstrdup(task->comm, GFP_KERNEL);
} else {
comm = NULL;
}
name = aspace->name;
} else {
name = comm = NULL;
}
seq_printf(m, " [%s%s%s: aspace=%p, %08llx,%s,inuse=%d]",
name, comm ? ":" : "", comm ? comm : "",
vma->aspace, vma->iova,
vma->mapped ? "mapped" : "unmapped",
vma->inuse);
kfree(comm);
}
seq_puts(m, "\n");
}