Use a locked xchg to ensure that the global log message giving
instructions on how to send a bug report is emitted precisely once.
Signed-off-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
---
drivers/gpu/drm/i915/i915_gpu_error.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/i915/i915_gpu_error.c b/drivers/gpu/drm/i915/i915_gpu_error.c
index b0ae055b6c82..e284bd76fa86 100644
--- a/drivers/gpu/drm/i915/i915_gpu_error.c
+++ b/drivers/gpu/drm/i915/i915_gpu_error.c
@@ -1765,7 +1765,7 @@ void i915_capture_error_state(struct drm_i915_private *i915,
return;
}
- if (!warned &&
+ if (!xchg(&warned, true) &&
ktime_get_real_seconds() - DRIVER_TIMESTAMP < DAY_AS_SECONDS(180)) {
pr_info("GPU hangs can indicate a bug anywhere in the entire gfx stack, including userspace.\n");
pr_info("Please file a _new_ bug report on bugs.freedesktop.org against DRI -> DRM/Intel\n");
@@ -1773,7 +1773,6 @@ void i915_capture_error_state(struct drm_i915_private *i915,
pr_info("The GPU crash dump is required to analyze GPU hangs, so please always attach it.\n");
pr_info("GPU crash dump saved to /sys/class/drm/card%d/error\n",
i915->drm.primary->index);
- warned = true;
}
}
--
2.23.0.rc1
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