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drm/i915: Local debug BUG_ON for intel_wakeref 

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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9
drivers/gpu/drm/i915/intel_wakeref.c
View File

@ -5,7 +5,7 @@
*/
#include "intel_runtime_pm.h"
#include "i915_gem.h"
#include "intel_wakeref.h"
static void rpm_get(struct intel_runtime_pm *rpm, struct intel_wakeref *wf)
{
@ -17,7 +17,7 @@ static void rpm_put(struct intel_runtime_pm *rpm, struct intel_wakeref *wf)
intel_wakeref_t wakeref = fetch_and_zero(&wf->wakeref);
intel_runtime_pm_put(rpm, wakeref);
GEM_BUG_ON(!wakeref);
INTEL_WAKEREF_BUG_ON(!wakeref);
}
int __intel_wakeref_get_first(struct intel_runtime_pm *rpm,
@ -48,6 +48,7 @@ int __intel_wakeref_get_first(struct intel_runtime_pm *rpm,
atomic_inc(&wf->count);
mutex_unlock(&wf->mutex);
INTEL_WAKEREF_BUG_ON(atomic_read(&wf->count) <= 0);
return 0;
}
@ -115,7 +116,7 @@ void intel_wakeref_auto(struct intel_wakeref_auto *wf, unsigned long timeout)
if (!refcount_inc_not_zero(&wf->count)) {
spin_lock_irqsave(&wf->lock, flags);
if (!refcount_inc_not_zero(&wf->count)) {
GEM_BUG_ON(wf->wakeref);
INTEL_WAKEREF_BUG_ON(wf->wakeref);
wf->wakeref = intel_runtime_pm_get_if_in_use(wf->rpm);
refcount_set(&wf->count, 1);
}
@ -134,5 +135,5 @@ void intel_wakeref_auto(struct intel_wakeref_auto *wf, unsigned long timeout)
void intel_wakeref_auto_fini(struct intel_wakeref_auto *wf)
{
intel_wakeref_auto(wf, 0);
GEM_BUG_ON(wf->wakeref);
INTEL_WAKEREF_BUG_ON(wf->wakeref);
}

7
drivers/gpu/drm/i915/intel_wakeref.h
View File

@ -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);