On Mon, Sep 27, 2021 at 02:42:44PM +0800, Huacai Chen wrote: > diff --git a/arch/loongarch/include/asm/spinlock.h b/arch/loongarch/include/asm/spinlock.h > new file mode 100644 > index 000000000000..2544ee546596 > --- /dev/null > +++ b/arch/loongarch/include/asm/spinlock.h > @@ -0,0 +1,12 @@ > +/* SPDX-License-Identifier: GPL-2.0 */ > +/* > + * Copyright (C) 2020-2021 Loongson Technology Corporation Limited > + */ > +#ifndef _ASM_SPINLOCK_H > +#define _ASM_SPINLOCK_H > + > +#include <asm/processor.h> > +#include <asm/qspinlock.h> > +#include <asm/qrwlock.h> > + > +#endif /* _ASM_SPINLOCK_H */ > diff --git a/arch/loongarch/include/asm/spinlock_types.h b/arch/loongarch/include/asm/spinlock_types.h > new file mode 100644 > index 000000000000..91f258401ef9 > --- /dev/null > +++ b/arch/loongarch/include/asm/spinlock_types.h > @@ -0,0 +1,11 @@ > +/* SPDX-License-Identifier: GPL-2.0 */ > +/* > + * Copyright (C) 2020-2021 Loongson Technology Corporation Limited > + */ > +#ifndef _ASM_SPINLOCK_TYPES_H > +#define _ASM_SPINLOCK_TYPES_H > + > +#include <asm-generic/qspinlock_types.h> > +#include <asm-generic/qrwlock_types.h> > + > +#endif Also see the many lkml threads on this, is there big enough loongson to justify qspinlock? Have you tried a ticket lock?
