Re: [PATCH V4 07/22] LoongArch: Add atomic/locking headers
From: Peter Zijlstra <peterz@infradead.org>
Date: 2021-10-01 11:04:45
Also in:
linux-arch, lkml
On Mon, Sep 27, 2021 at 02:42:44PM +0800, Huacai Chen wrote:
quoted hunk ↗ jump to hunk
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?