Commit 11669b58 authored Sep 30, 2022 by Tomer Tayar Committed by Oded Gabbay Nov 23, 2022

habanalabs: add an option to control watchdog timeout via debugfs



Add an option to control the timeout value for the driver's watchdog
of the reset process. The timeout represents the amount of the user
has to close his process once he gets a device reset notification from
the driver.

Signed-off-by: Tomer Tayar <ttayar@habana.ai>
Reviewed-by: Oded Gabbay <ogabbay@kernel.org>
Signed-off-by: Oded Gabbay <ogabbay@kernel.org>

parent a88a6f5f

Documentation/ABI/testing/debugfs-driver-habanalabs

+7 −0

Original line number	Diff line number	Diff line
		@@ -91,6 +91,13 @@ Description: Enables the root user to set the device to specific state.
		Valid values are "disable", "enable", "suspend", "resume".
		User can read this property to see the valid values

		What: /sys/kernel/debug/habanalabs/hl<n>/device_release_watchdog_timeout
		Date: Oct 2022
		KernelVersion: 6.2
		Contact: ttayar@habana.ai
		Description: The watchdog timeout value in seconds for a device relese upon
		certain error cases, after which the device is reset.

		What: /sys/kernel/debug/habanalabs/hl<n>/dma_size
		Date: Apr 2021
		KernelVersion: 5.13

drivers/misc/habanalabs/common/debugfs.c

+5 −0

Original line number	Diff line number	Diff line
		@@ -1769,6 +1769,11 @@ void hl_debugfs_add_device(struct hl_device *hdev)
		dev_entry,
		&hl_timeout_locked_fops);

		debugfs_create_u32("device_release_watchdog_timeout",
		0644,
		dev_entry->root,
		&hdev->device_release_watchdog_timeout_sec);

		for (i = 0, entry = dev_entry->entry_arr ; i < count ; i++, entry++) {
		debugfs_create_file(hl_debugfs_list[i].name,
		0444,