Re: [PATCH] drm/i915: Enable refcount debugging for default debug levels

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On 6/13/19 3:46 PM, Rodrigo Vivi wrote:
On Thu, Jun 13, 2019 at 01:28:42PM +0100, Chris Wilson wrote:
refcount_t is our first line of defence against use-after-free, so let's
enable it for debugging.

It seems a nice thing to have on debug by default and they promise no
performance impact.

Acked-by: Rodrigo Vivi <rodrigo.vivi@xxxxxxxxx>

Well, I hope our CI doesn't complain, but if it does we can remove later.
anyway,
Cc: Martin
Cc: Tomi
Cc: Arek

This change will be seen in forced build CI_DRM_6260.

Tomi


Signed-off-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
---
  drivers/gpu/drm/i915/Kconfig.debug | 1 +
  1 file changed, 1 insertion(+)

diff --git a/drivers/gpu/drm/i915/Kconfig.debug b/drivers/gpu/drm/i915/Kconfig.debug
index 09aa0f4c8bf1..8d922bb4d953 100644
--- a/drivers/gpu/drm/i915/Kconfig.debug
+++ b/drivers/gpu/drm/i915/Kconfig.debug
@@ -21,6 +21,7 @@ config DRM_I915_DEBUG
          depends on DRM_I915
          select DEBUG_FS
          select PREEMPT_COUNT
+        select REFCOUNT_FULL
          select I2C_CHARDEV
          select STACKDEPOT
          select DRM_DP_AUX_CHARDEV
--
2.20.1


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