[Intel-xe] [PATCH 1/2] drm/xe: Print devcoredump to drm_info

[Stuart Summers]

Currently the devcoredump is available in the file system
for a user. However 1) CI isn't currently set up to dump
this data and 2) if we try to dump this during the driver
load when a failure is observed, the driver will be torn
down before we have a chance to actually read this data.

Add a quick routine to print this out with drm_info as well
if CONFIG_DRM_XE_DEBUG is enabled.

Signed-off-by: Stuart Summers <stuart.summers at intel.com>
---
 drivers/gpu/drm/xe/xe_devcoredump.c | 17 ++++++++++++++++-
 drivers/gpu/drm/xe/xe_devcoredump.h |  3 +++
 2 files changed, 19 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/xe/xe_devcoredump.c b/drivers/gpu/drm/xe/xe_devcoredump.c
index 68abc0b195be..aa41d8e9b602 100644
--- a/drivers/gpu/drm/xe/xe_devcoredump.c
+++ b/drivers/gpu/drm/xe/xe_devcoredump.c
@@ -78,7 +78,11 @@ static ssize_t xe_devcoredump_read(char *buffer, loff_t offset,
 	iter.remain = count;
 
 	ss = &coredump->snapshot;
-	p = drm_coredump_printer(&iter);
+
+	if (iter.data)
+		p = drm_coredump_printer(&iter);
+	else
+		p = drm_info_printer(coredump_to_xe(coredump)->drm.dev);
 
 	drm_printf(&p, "**** Xe Device Coredump ****\n");
 	drm_printf(&p, "kernel: " UTS_RELEASE "\n");
@@ -102,6 +106,15 @@ static ssize_t xe_devcoredump_read(char *buffer, loff_t offset,
 	return count - iter.remain;
 }
 
+/* Print the coredump locally also for debug purposes */
+void
+xe_devcoredump_print(struct xe_devcoredump *coredump)
+{
+#if IS_ENABLED(CONFIG_DRM_XE_DEBUG)
+	xe_devcoredump_read(NULL, 0, 0, coredump, 0);
+#endif
+}
+
 static void xe_devcoredump_free(void *data)
 {
 	struct xe_devcoredump *coredump = data;
@@ -192,5 +205,7 @@ void xe_devcoredump(struct xe_exec_queue *q)
 
 	dev_coredumpm(xe->drm.dev, THIS_MODULE, coredump, 0, GFP_KERNEL,
 		      xe_devcoredump_read, xe_devcoredump_free);
+
+	xe_devcoredump_print(coredump);
 }
 #endif
diff --git a/drivers/gpu/drm/xe/xe_devcoredump.h b/drivers/gpu/drm/xe/xe_devcoredump.h
index 6ac218a5c194..ba0c2a7b71b4 100644
--- a/drivers/gpu/drm/xe/xe_devcoredump.h
+++ b/drivers/gpu/drm/xe/xe_devcoredump.h
@@ -8,6 +8,9 @@
 
 struct xe_device;
 struct xe_exec_queue;
+struct xe_devcoredump;
+
+void xe_devcoredump_print(struct xe_devcoredump *coredump);
 
 #ifdef CONFIG_DEV_COREDUMP
 void xe_devcoredump(struct xe_exec_queue *q);
-- 
2.34.1