[PATCH AUTOSEL 5.2 30/44] habanalabs: fix DRAM usage accounting on context tear down

[Sasha Levin]

From: Tomer Tayar <tta...@habana.ai>

[ Upstream commit c8113756ba27298d6e95403c087dc5881b419a99 ]

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 <tta...@habana.ai>
Reviewed-by: Oded Gabbay <oded.gab...@gmail.com>
Signed-off-by: Oded Gabbay <oded.gab...@gmail.com>
Signed-off-by: Sasha Levin <sas...@kernel.org>
---
 drivers/misc/habanalabs/memory.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/misc/habanalabs/memory.c b/drivers/misc/habanalabs/memory.c
index 693877e37fd87..924a438ba9736 100644
--- 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);
                }
-- 
2.20.1