[PATCH 4/6] drm/amdgpu: Limit info in coredump for kernel threads

[André Almeida]

If a kernel thread caused the reset, the information available to be
logged will be limited, so return early in the dump function.

Signed-off-by: André Almeida <andrealm...@igalia.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c 
b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
index 23b9784e9787..7449aead1e13 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
@@ -4988,10 +4988,14 @@ static ssize_t amdgpu_devcoredump_read(char *buffer, 
loff_t offset,
        drm_printf(&p, "kernel: " UTS_RELEASE "\n");
        drm_printf(&p, "module: " KBUILD_MODNAME "\n");
        drm_printf(&p, "time: %lld.%09ld\n", coredump->reset_time.tv_sec, 
coredump->reset_time.tv_nsec);
-       if (coredump->reset_task_info.pid)
+       if (coredump->reset_task_info.pid) {
                drm_printf(&p, "process_name: %s PID: %d\n",
                           coredump->reset_task_info.process_name,
                           coredump->reset_task_info.pid);
+       } else {
+               drm_printf(&p, "GPU reset caused by a kernel thread\n");
+               return count - iter.remain;
+       }
 
        if (coredump->reset_vram_lost)
                drm_printf(&p, "VRAM is lost due to GPU reset!\n");
-- 
2.41.0