From 4aecb05e526a421bff2bf4feeda7687efa74333e Mon Sep 17 00:00:00 2001 From: Oded Gabbay Date: Mon, 22 Jul 2019 17:37:22 +0300 Subject: [PATCH] habanalabs: kill user process after CS rollback This patch calls the kill user process function after we rollback the in-flight CSs. This is because the user process can't be closed while there are open CSs. Therefore, there is no point of sending it a SIGKILL before we do the rollback CS part. Signed-off-by: Oded Gabbay Reviewed-by: Greg Kroah-Hartman --- drivers/misc/habanalabs/device.c | 17 +++++++++++++---- 1 file changed, 13 insertions(+), 4 deletions(-) diff --git a/drivers/misc/habanalabs/device.c b/drivers/misc/habanalabs/device.c index 7a8f9d0b71b5..257438d7a632 100644 --- a/drivers/misc/habanalabs/device.c +++ b/drivers/misc/habanalabs/device.c @@ -630,8 +630,6 @@ static void device_hard_reset_pending(struct work_struct *work) container_of(work, struct hl_device_reset_work, reset_work); struct hl_device *hdev = device_reset_work->hdev; - device_kill_open_processes(hdev); - hl_device_reset(hdev, true, true); kfree(device_reset_work); @@ -736,6 +734,13 @@ int hl_device_reset(struct hl_device *hdev, bool hard_reset, /* Go over all the queues, release all CS and their jobs */ hl_cs_rollback_all(hdev); + /* Kill processes here after CS rollback. This is because the process + * can't really exit until all its CSs are done, which is what we + * do in cs rollback + */ + if (from_hard_reset_thread) + device_kill_open_processes(hdev); + /* Release kernel context */ if ((hard_reset) && (hl_ctx_put(hdev->kernel_ctx) == 1)) hdev->kernel_ctx = NULL; @@ -1129,8 +1134,6 @@ void hl_device_fini(struct hl_device *hdev) hdev->hard_reset_pending = true; - device_kill_open_processes(hdev); - hl_hwmon_fini(hdev); device_late_fini(hdev); @@ -1149,6 +1152,12 @@ void hl_device_fini(struct hl_device *hdev) /* Go over all the queues, release all CS and their jobs */ hl_cs_rollback_all(hdev); + /* Kill processes here after CS rollback. This is because the process + * can't really exit until all its CSs are done, which is what we + * do in cs rollback + */ + device_kill_open_processes(hdev); + hl_cb_pool_fini(hdev); /* Release kernel context */