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* [PATCH] drm/xe: Add helper function to inject fault into ct_dead_capture()
@ 2025-04-29 13:46 Satyanarayana K V P
  2025-04-29 13:35 ` ✓ CI.Patch_applied: success for " Patchwork
                   ` (8 more replies)
  0 siblings, 9 replies; 11+ messages in thread
From: Satyanarayana K V P @ 2025-04-29 13:46 UTC (permalink / raw)
  To: intel-xe; +Cc: Satyanarayana K V P, John Harrison, Aditya Chauhan

When injecting fault to xe_guc_ct_send_recv() & xe_guc_mmio_send_recv()
functions, the CI test systems are going out of space and crashing. To
avoid this issue, a new helper function is created and when fault is injected
into this xe_should_fail_ct_dead_capture() helper function, ct dead capture is
avoided which suppresses ct dumps in the log.

Signed-off-by: Satyanarayana K V P <satyanarayana.k.v.p@intel.com>
Suggested-by: John Harrison <John.C.Harrison@Intel.com>
Tested-by: Aditya Chauhan <aditya.chauhan@intel.com>
---
 drivers/gpu/drm/xe/xe_guc_ct.c | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/drivers/gpu/drm/xe/xe_guc_ct.c b/drivers/gpu/drm/xe/xe_guc_ct.c
index 2447de0ebedf..3a49e432f74a 100644
--- a/drivers/gpu/drm/xe/xe_guc_ct.c
+++ b/drivers/gpu/drm/xe/xe_guc_ct.c
@@ -1770,6 +1770,12 @@ void xe_guc_ct_print(struct xe_guc_ct *ct, struct drm_printer *p, bool want_ctb)
 }
 
 #if IS_ENABLED(CONFIG_DRM_XE_DEBUG)
+static noinline int xe_should_fail_ct_dead_capture(void)
+{
+	return 0;
+}
+ALLOW_ERROR_INJECTION(xe_should_fail_ct_dead_capture, ERRNO);
+
 static void ct_dead_capture(struct xe_guc_ct *ct, struct guc_ctb *ctb, u32 reason_code)
 {
 	struct xe_guc_log_snapshot *snapshot_log;
@@ -1778,6 +1784,13 @@ static void ct_dead_capture(struct xe_guc_ct *ct, struct guc_ctb *ctb, u32 reaso
 	unsigned long flags;
 	bool have_capture;
 
+	/*
+	 * Huge dump is getting generated when injecting error for guc CT/MMIO
+	 * functions. So, let us suppress the dump when fault is injected.
+	 */
+	if (xe_should_fail_ct_dead_capture())
+		return;
+
 	if (ctb)
 		ctb->info.broken = true;
 
-- 
2.43.0


^ permalink raw reply related	[flat|nested] 11+ messages in thread
end of thread, other threads:[~2025-05-06  7:52 UTC | newest]

Thread overview: 11+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2025-04-29 13:46 [PATCH] drm/xe: Add helper function to inject fault into ct_dead_capture() Satyanarayana K V P
2025-04-29 13:35 ` ✓ CI.Patch_applied: success for " Patchwork
2025-04-29 13:36 ` ✗ CI.checkpatch: warning " Patchwork
2025-04-29 13:37 ` ✓ CI.KUnit: success " Patchwork
2025-04-29 13:45 ` ✓ CI.Build: " Patchwork
2025-04-29 13:47 ` ✓ CI.Hooks: " Patchwork
2025-04-29 13:49 ` ✓ CI.checksparse: " Patchwork
2025-04-29 16:35 ` ✗ Xe.CI.Full: failure " Patchwork
2025-04-30 12:01 ` [PATCH] " Jani Nikula
2025-04-30 13:01   ` K V P, Satyanarayana
2025-05-06  7:52 ` ✓ Xe.CI.BAT: success for " Patchwork

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