[PATCH 3/4] habanalabs: add debug messages for opening/closing context

Oded Gabbay
2020-09-24T07:03:17Z

During debugging of error we sometimes need to know whether the error
happened when a user context was open. Add debug prints when opening and
closing user contexts.

Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>
---
drivers/misc/habanalabs/common/context.c | 5 +++++
1 file changed, 5 insertions(+)

diff --git a/drivers/misc/habanalabs/common/context.c b/drivers/misc/habanalabs/common/context.c
index df8171a2226c..bd03ef074eed 100644
--- a/drivers/misc/habanalabs/common/context.c
+++ b/drivers/misc/habanalabs/common/context.c
@@ -28,6 +28,8 @@ static void hl_ctx_fini(struct hl_ctx *ctx)
kfree(ctx->cs_pending);

if (ctx->asid != HL_KERNEL_ASID_ID) {
+ dev_dbg(hdev->dev, "closing user context %d\n", ctx->asid);
+
/* The engines are stopped as there is no executing CS, but the
* Coresight might be still working by accessing addresses
* related to the stopped engines. Hence stop it explicitly.
@@ -41,6 +43,7 @@ static void hl_ctx_fini(struct hl_ctx *ctx)
hl_vm_ctx_fini(ctx);
hl_asid_free(hdev, ctx->asid);
} else {
+ dev_dbg(hdev->dev, "closing kernel context\n");
hl_mmu_ctx_fini(ctx);
}
}
@@ -168,6 +171,8 @@ int hl_ctx_init(struct hl_device *hdev, struct hl_ctx *ctx, bool is_kernel_ctx)
dev_err(hdev->dev, "ctx_init failed\n");
goto err_cb_va_pool_fini;
}
+
+ dev_dbg(hdev->dev, "create user context %d\n", ctx->asid);
}

return 0;
--
2.17.1