habanalabs: print va_range in vm node debugfs

VA range info could assist in debugging VA allocation bugs.

Signed-off-by: Yuri Nudelman <ynudelman@habana.ai>
Reviewed-by: Oded Gabbay <ogabbay@kernel.org>
Signed-off-by: Oded Gabbay <ogabbay@kernel.org>

diff --git a/drivers/misc/habanalabs/common/debugfs.c b/drivers/misc/habanalabs/common/debugfs.c
index 1f2a3dc..a239c56 100644 (file)
--- a/drivers/misc/habanalabs/common/debugfs.c
+++ b/drivers/misc/habanalabs/common/debugfs.c
@@ -235,6 +235,8 @@ static int vm_show(struct seq_file *s, void *data)
        struct hl_vm_hash_node *hnode;
        struct hl_userptr *userptr;
        struct hl_vm_phys_pg_pack *phys_pg_pack = NULL;
+       struct hl_va_range *va_range;
+       struct hl_vm_va_block *va_block;
        enum vm_type *vm_type;
        bool once = true;
        u64 j;
@@ -314,6 +316,29 @@ static int vm_show(struct seq_file *s, void *data)
 
        spin_unlock(&dev_entry->ctx_mem_hash_spinlock);
 
+       mutex_lock(&dev_entry->hdev->fpriv_list_lock);
+       ctx = dev_entry->hdev->compute_ctx;
+       if (ctx)
+               hl_ctx_get(dev_entry->hdev, ctx);
+       mutex_unlock(&dev_entry->hdev->fpriv_list_lock);
+       if (ctx) {
+               seq_puts(s, "\nVA ranges:\n\n");
+               for (i = HL_VA_RANGE_TYPE_HOST ; i < HL_VA_RANGE_TYPE_MAX ; ++i) {
+                       va_range = ctx->va_range[i];
+                       seq_printf(s, "   va_range %d\n", i);
+                       seq_puts(s, "---------------------\n");
+                       mutex_lock(&va_range->lock);
+                       list_for_each_entry(va_block, &va_range->list, node) {
+                               seq_printf(s, "%#16llx - %#16llx (%#llx)\n",
+                                          va_block->start, va_block->end,
+                                          va_block->size);
+                       }
+                       mutex_unlock(&va_range->lock);
+                       seq_puts(s, "\n");
+               }
+               hl_ctx_put(ctx);
+       }
+
        if (!once)
                seq_puts(s, "\n");