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Diffstat (limited to 'drivers/gpu/drm/i915/i915_tasklet.h')
-rw-r--r--drivers/gpu/drm/i915/i915_tasklet.h43
1 files changed, 43 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/i915_tasklet.h b/drivers/gpu/drm/i915/i915_tasklet.h
new file mode 100644
index 000000000..5d7069bdf
--- /dev/null
+++ b/drivers/gpu/drm/i915/i915_tasklet.h
@@ -0,0 +1,43 @@
+/* SPDX-License-Identifier: MIT */
+/*
+ * Copyright © 2022 Intel Corporation
+ */
+
+#ifndef __I915_TASKLET_H__
+#define __I915_TASKLET_H__
+
+#include <linux/interrupt.h>
+
+static inline void tasklet_lock(struct tasklet_struct *t)
+{
+ while (!tasklet_trylock(t))
+ cpu_relax();
+}
+
+static inline bool tasklet_is_locked(const struct tasklet_struct *t)
+{
+ return test_bit(TASKLET_STATE_RUN, &t->state);
+}
+
+static inline void __tasklet_disable_sync_once(struct tasklet_struct *t)
+{
+ if (!atomic_fetch_inc(&t->count))
+ tasklet_unlock_spin_wait(t);
+}
+
+static inline bool __tasklet_is_enabled(const struct tasklet_struct *t)
+{
+ return !atomic_read(&t->count);
+}
+
+static inline bool __tasklet_enable(struct tasklet_struct *t)
+{
+ return atomic_dec_and_test(&t->count);
+}
+
+static inline bool __tasklet_is_scheduled(struct tasklet_struct *t)
+{
+ return test_bit(TASKLET_STATE_SCHED, &t->state);
+}
+
+#endif /* __I915_TASKLET_H__ */