1 files changed, 38 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/current.h b/arch/powerpc/include/asm/current.h
new file mode 100644
index 000000000..bbfb94800
--- /dev/null
+++ b/arch/powerpc/include/asm/current.h
@@ -0,0 +1,38 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+#ifndef _ASM_POWERPC_CURRENT_H
+#define _ASM_POWERPC_CURRENT_H
+#ifdef __KERNEL__
+
+/*
+ */
+
+struct task_struct;
+
+#ifdef __powerpc64__
+#include <linux/stddef.h>
+#include <asm/paca.h>
+
+static inline struct task_struct *get_current(void)
+{
+	struct task_struct *task;
+
+	/* get_current can be cached by the compiler, so no volatile */
+	asm ("ld %0,%1(13)"
+	: "=r" (task)
+	: "i" (offsetof(struct paca_struct, __current)));
+
+	return task;
+}
+#define current	get_current()
+
+#else
+
+/*
+ * We keep `current' in r2 for speed.
+ */
+register struct task_struct *current asm ("r2");
+
+#endif
+
+#endif /* __KERNEL__ */
+#endif /* _ASM_POWERPC_CURRENT_H */