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 <[email protected]> Reviewed-by: Felix Kuehling <[email protected]> Signed-off-by: Rajneesh Bhardwaj <[email protected]> --- drivers/gpu/drm/amd/amdkfd/kfd_chardev.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c b/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c index 275f79ab0900..86b919d82129 100644 --- a/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c +++ b/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c @@ -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; } -- 2.17.1 _______________________________________________ amd-gfx mailing list [email protected] https://lists.freedesktop.org/mailman/listinfo/amd-gfx
