habanalabs: fix DRAM usage accounting on context tear down

The patch fix the DRAM usage accounting by adding a missing update of
the DRAM memory consumption, when a context is being torn down without an
organized release of the allocated memory.

Signed-off-by: Tomer Tayar <ttayar@habana.ai>
Reviewed-by: Oded Gabbay <oded.gabbay@gmail.com>
Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>

diff --git a/drivers/misc/habanalabs/memory.c b/drivers/misc/habanalabs/memory.c
index 42d237cae1dc571419ee1a107960996b2b6f3d85..365fb0cb8dfffa87291dad6eeeb8625ce0de3212 100644 (file)
--- a/drivers/misc/habanalabs/memory.c
+++ b/drivers/misc/habanalabs/memory.c
@@ -1629,6 +1629,8 @@ void hl_vm_ctx_fini(struct hl_ctx *ctx)
                        dev_dbg(hdev->dev,
                                "page list 0x%p of asid %d is still alive\n",
                                phys_pg_list, ctx->asid);
+                       atomic64_sub(phys_pg_list->total_size,
+                                       &hdev->dram_used_mem);
                        free_phys_pg_pack(hdev, phys_pg_list);
                        idr_remove(&vm->phys_pg_pack_handles, i);
                }