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drm/i915: Local debug BUG_ON for intel_wakeref

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Avoid pulling in i915_gem.h just so that we can use a conditional BUG_ON
for debugging.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Matthew Auld <matthew.auld@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190621183801.23252-5-chris@chris-wilson.co.uk
This commit is contained in:
Chris Wilson
2019-06-21 19:38:01 +01:00
parent 12c255b5da
commit fb993aa7a4
2 changed files with 12 additions and 4 deletions
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7
drivers/gpu/drm/i915/intel_wakeref.h
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@@ -13,6 +13,12 @@
#include <linux/stackdepot.h>
#include <linux/timer.h>
#if IS_ENABLED(CONFIG_DRM_I915_DEBUG)
#define INTEL_WAKEREF_BUG_ON(expr) BUG_ON(expr)
#else
#define INTEL_WAKEREF_BUG_ON(expr) BUILD_BUG_ON_INVALID(expr)
#endif
struct intel_runtime_pm;
typedef depot_stack_handle_t intel_wakeref_t;
@@ -86,6 +92,7 @@ intel_wakeref_put(struct intel_runtime_pm *rpm,
struct intel_wakeref *wf,
int (*fn)(struct intel_wakeref *wf))
{
INTEL_WAKEREF_BUG_ON(atomic_read(&wf->count) <= 0);
if (atomic_dec_and_mutex_lock(&wf->count, &wf->mutex))
return __intel_wakeref_put_last(rpm, wf, fn);