Commit 3c1224c0 authored Jan 21, 2020 by Rajneesh Bhardwaj Committed by Alex Deucher Feb 12, 2020

drm/amdkfd: show warning when kfd is locked



During system suspend the kfd driver aquires a lock that prohibits
further kfd actions unless the gpu is resumed. This adds some info which
can be useful while debugging.

Reviewed-by: Oak Zeng <oak.zeng@amd.com>
Reviewed-by: Felix Kuehling <felix.kuehling@amd.com>
Signed-off-by: Rajneesh Bhardwaj <rajneesh.bhardwaj@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

parent 70bedd68

drivers/gpu/drm/amd/amdkfd/kfd_chardev.c

+2 −0

Original line number	Diff line number	Diff line
		@@ -127,6 +127,8 @@ static int kfd_open(struct inode inode, struct file filep)
		return PTR_ERR(process);

		if (kfd_is_locked()) {
		dev_dbg(kfd_device, "kfd is locked!\n"
		"process %d unreferenced", process->pasid);
		kfd_unref_process(process);
		return -EAGAIN;
		}

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