From 3c1224c02e995685bb386f259ae2f737eca739f3 Mon Sep 17 00:00:00 2001 From: Rajneesh Bhardwaj Date: Tue, 21 Jan 2020 14:34:51 -0500 Subject: [PATCH] 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 Reviewed-by: Felix Kuehling Signed-off-by: Rajneesh Bhardwaj Signed-off-by: Alex Deucher --- 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 3f0300e53727..8d56afd76eb3 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; }