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drm/i915: Only emit the 'send bug report' once for a GPU hang

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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@chris-wilson.co.uk>
Reviewed-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190819075835.20065-5-chris@chris-wilson.co.uk
This commit is contained in:
Chris Wilson 2019-08-19 08:58:21 +01:00
parent d67739268c
commit a1e37b0259
1 changed files with 1 additions and 2 deletions
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3
drivers/gpu/drm/i915/i915_gpu_error.c
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@ -1764,7 +1764,7 @@ 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");
@ -1772,7 +1772,6 @@ 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;
}
}