From: Oded Gabbay <oded.gabbay@gmail.com>
To: linux-kernel@vger.kernel.org, oshpigelman@habana.ai,
ttayar@habana.ai, gregkh@linuxfoundation.org
Subject: [PATCH 8/9] habanalabs: kill user process after CS rollback
Date: Sun, 28 Jul 2019 14:28:17 +0300 [thread overview]
Message-ID: <20190728112818.30397-9-oded.gabbay@gmail.com> (raw)
In-Reply-To: <20190728112818.30397-1-oded.gabbay@gmail.com>
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 <oded.gabbay@gmail.com>
---
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 471506b54217..2677160c01b8 100644
--- a/drivers/misc/habanalabs/device.c
+++ b/drivers/misc/habanalabs/device.c
@@ -631,8 +631,6 @@ 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);
@@ -737,6 +735,13 @@ 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;
@@ -1131,8 +1136,6 @@ 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);
@@ -1151,6 +1154,12 @@ 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 */
--
2.17.1
next prev parent reply other threads:[~2019-07-28 11:28 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-07-28 11:28 [PATCH 0/9] habanalabs: support open device by multiple processes Oded Gabbay
2019-07-28 11:28 ` [PATCH 1/9] habanalabs: add handle field to context structure Oded Gabbay
2019-07-28 11:28 ` [PATCH 2/9] habanalabs: verify context is valid in IOCTLs Oded Gabbay
2019-07-28 11:28 ` [PATCH 3/9] habanalabs: create context in lazy mode Oded Gabbay
2019-07-28 11:28 ` [PATCH 4/9] habanalabs: don't change frequency if user context is valid Oded Gabbay
2019-07-28 11:28 ` [PATCH 5/9] habanalabs: maintain a list of file private data objects Oded Gabbay
2019-07-28 11:28 ` [PATCH 6/9] habanalabs: define user context as compute context Oded Gabbay
2019-07-28 11:28 ` [PATCH 7/9] habanalabs: protect only pointer dereference in hard-reset Oded Gabbay
2019-07-28 11:28 ` Oded Gabbay [this message]
2019-07-28 11:28 ` [PATCH 9/9] habanalabs: allow multiple processes to open FD Oded Gabbay
2019-07-28 11:44 ` Greg KH
2019-07-28 11:56 ` Oded Gabbay
2019-07-28 12:04 ` Greg KH
2019-07-28 12:06 ` Oded Gabbay
2019-07-28 12:12 ` Greg KH
2019-07-28 12:18 ` Oded Gabbay
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