From 3a2bf9f358b093ebea1b1a6311606903cfb6a61b Mon Sep 17 00:00:00 2001
From: Rajneesh Bhardwaj <rajneesh.bhardwaj@amd.com>
Date: Tue, 21 Jan 2020 14:34:51 -0500
Subject: drm/amdkfd: show warning when kfd is locked
Git-commit: 3c1224c02e995685bb386f259ae2f737eca739f3
Patch-mainline: v5.7-rc1
References: jsc#SLE-12680, jsc#SLE-12880, jsc#SLE-12882, jsc#SLE-12883, jsc#SLE-13496, jsc#SLE-15322
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>
Signed-off-by: Patrik Jakobsson <pjakobsson@suse.de>
---
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;
}
--
2.28.0