Messages in this thread Patch in this message | | | Date | Mon, 6 Jan 2014 18:51:39 +0000 | From | Will Deacon <> | Subject | Re: [PATCH v7 6/7] arm64, jump label: optimize jump label implementation |
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On Sun, Dec 22, 2013 at 03:25:42PM +0000, Jiang Liu wrote: > Optimize jump label implementation for ARM64 by dynamically patching > kernel text.
Almost!
> diff --git a/arch/arm64/include/asm/jump_label.h b/arch/arm64/include/asm/jump_label.h > new file mode 100644 > index 0000000..47cd130 > --- /dev/null > +++ b/arch/arm64/include/asm/jump_label.h > @@ -0,0 +1,51 @@ > +/* > + * Copyright (C) 2013 Huawei Ltd. > + * Author: Jiang Liu <liuj97@gmail.com> > + * > + * Based on arch/arm/include/asm/jump_label.h > + * > + * This program is free software; you can redistribute it and/or modify > + * it under the terms of the GNU General Public License version 2 as > + * published by the Free Software Foundation. > + * > + * This program is distributed in the hope that it will be useful, > + * but WITHOUT ANY WARRANTY; without even the implied warranty of > + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the > + * GNU General Public License for more details. > + * > + * You should have received a copy of the GNU General Public License > + * along with this program. If not, see <http://www.gnu.org/licenses/>. > + */ > +#ifndef _ASM_JUMP_LABEL_H > +#define _ASM_JUMP_LABEL_H It's actually prefixed with double-underscore in our other headers.
> +#include <linux/types.h> > + > +#ifdef __KERNEL__ > + > +#define JUMP_LABEL_NOP_SIZE 4
I know you didn't like including asm/insn.h, but I don't see why that's such a problem. Does it cause a circular dependency or something?
Will
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