[PATCH 4/4] habanalabs: add notice of device not idle

Oded Gabbay
2020-09-24T07:03:14Z

The device should be idle after a context is closed. If not, print a
notice.

Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>
---
drivers/misc/habanalabs/common/context.c | 8 ++++++++
1 file changed, 8 insertions(+)

diff --git a/drivers/misc/habanalabs/common/context.c b/drivers/misc/habanalabs/common/context.c
index bd03ef074eed..7a59dd7c6450 100644
--- a/drivers/misc/habanalabs/common/context.c
+++ b/drivers/misc/habanalabs/common/context.c
@@ -12,6 +12,7 @@
static void hl_ctx_fini(struct hl_ctx *ctx)
{
struct hl_device *hdev = ctx->hdev;
+ u64 idle_mask = 0;
int i;

/*
@@ -42,6 +43,13 @@ static void hl_ctx_fini(struct hl_ctx *ctx)
hl_cb_va_pool_fini(ctx);
hl_vm_ctx_fini(ctx);
hl_asid_free(hdev, ctx->asid);
+
+ if ((!hdev->pldm) && (hdev->pdev) &&
+ (!hdev->asic_funcs->is_device_idle(hdev,
+ &idle_mask, NULL)))
+ dev_notice(hdev->dev,
+ "device not idle after user context is closed (0x%llx)\n",
+ idle_mask);
} else {
dev_dbg(hdev->dev, "closing kernel context\n");
hl_mmu_ctx_fini(ctx);
--
2.17.1