From: Huacai Chen <chenhuacai@gmail.com>
To: Xi Ruoyao <xry111@mengyan1223.wang>
Cc: Huacai Chen <chenhuacai@loongson.cn>,
Arnd Bergmann <arnd@arndb.de>, Andy Lutomirski <luto@kernel.org>,
Thomas Gleixner <tglx@linutronix.de>,
Peter Zijlstra <peterz@infradead.org>,
Andrew Morton <akpm@linux-foundation.org>,
David Airlie <airlied@linux.ie>, Jonathan Corbet <corbet@lwn.net>,
Linus Torvalds <torvalds@linux-foundation.org>,
linux-arch <linux-arch@vger.kernel.org>,
"open list:DOCUMENTATION" <linux-doc@vger.kernel.org>,
LKML <linux-kernel@vger.kernel.org>,
Xuefeng Li <lixuefeng@loongson.cn>,
Yanteng Si <siyanteng@loongson.cn>,
Jiaxun Yang <jiaxun.yang@flygoat.com>
Subject: Re: [PATCH V4 19/22] LoongArch: Add VDSO and VSYSCALL support
Date: Sat, 2 Oct 2021 18:53:37 +0800 [thread overview]
Message-ID: <CAAhV-H6WWPeYfYsAM2UfKH1GYVA=Ww2k1akAy-ve28u3kJL4pA@mail.gmail.com> (raw)
In-Reply-To: <f6fc1fa8bf4decf97d76900a64fe0bc2bf25576d.camel@mengyan1223.wang>
Hi, Ruoyao,
On Thu, Sep 30, 2021 at 11:43 PM Xi Ruoyao <xry111@mengyan1223.wang> wrote:
>
> On Mon, 2021-09-27 at 14:42 +0800, Huacai Chen wrote:
> > diff --git a/arch/loongarch/vdso/gen_vdso_offsets.sh
> > b/arch/loongarch/vdso/gen_vdso_offsets.sh
> > new file mode 100755
> > index 000000000000..7da255fea213
> > --- /dev/null
> > +++ b/arch/loongarch/vdso/gen_vdso_offsets.sh
> > @@ -0,0 +1,14 @@
> > +#!/bin/sh
> > +# SPDX-License-Identifier: GPL-2.0
> > +
> > +#
> > +# Derived from RISC-V and ARM64:
> > +# Author: Will Deacon <will.deacon@arm.com>
> > +#
> > +# Match symbols in the DSO that look like VDSO_*; produce a header
> > file
> > +# of constant offsets into the shared object.
> > +#
> > +
> > +LC_ALL=C
>
> I'm wondering whether this line is really useful... There is no "export"
> here so the variable won't be passed to the environment of the sed
> command below.
Have you encountered some problems with this? It just works for me,
and both ARM64 and RISCV are the same.
Huacai
>
> > +sed -n -e 's/^00*/0/' -e \
> > +'s/^\([0-9a-fA-F]*\) . VDSO_\([a-zA-Z0-9_]*\)$/\#define
> > vdso_offset_\2\t0x\1/p'
next prev parent reply other threads:[~2021-10-02 10:53 UTC|newest]
Thread overview: 41+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-09-27 6:42 [PATCH V4 00/22] arch: Add basic LoongArch support Huacai Chen
2021-09-27 6:42 ` [PATCH V4 01/22] Documentation: LoongArch: Add basic documentations Huacai Chen
2021-09-27 6:42 ` [PATCH V4 02/22] Documentation/zh_CN: Add basic LoongArch documentations Huacai Chen
2021-09-27 6:42 ` [PATCH V4 03/22] LoongArch: Add elf-related definitions Huacai Chen
2021-09-27 6:42 ` [PATCH V4 04/22] LoongArch: Add writecombine support for drm Huacai Chen
2021-09-27 6:42 ` [PATCH V4 05/22] LoongArch: Add build infrastructure Huacai Chen
2021-09-27 6:42 ` [PATCH V4 06/22] LoongArch: Add CPU definition headers Huacai Chen
2021-09-30 15:30 ` Xi Ruoyao
2021-10-02 10:49 ` Huacai Chen
2021-09-27 6:42 ` [PATCH V4 07/22] LoongArch: Add atomic/locking headers Huacai Chen
2021-10-01 10:52 ` Peter Zijlstra
2021-10-02 11:47 ` Huacai Chen
2021-10-01 11:04 ` Peter Zijlstra
2021-10-02 11:05 ` Huacai Chen
2021-09-27 6:42 ` [PATCH V4 08/22] LoongArch: Add other common headers Huacai Chen
2021-09-27 6:42 ` [PATCH V4 09/22] LoongArch: Add boot and setup routines Huacai Chen
2021-09-27 6:52 ` Ard Biesheuvel
2021-09-29 3:24 ` Huacai Chen
2021-09-27 6:42 ` [PATCH V4 10/22] LoongArch: Add exception/interrupt handling Huacai Chen
2021-09-27 6:42 ` [PATCH V4 11/22] LoongArch: Add process management Huacai Chen
2021-10-03 2:48 ` Al Viro
2021-10-03 9:10 ` Huacai Chen
2021-09-27 6:42 ` [PATCH V4 12/22] LoongArch: Add memory management Huacai Chen
2021-09-27 6:42 ` [PATCH V4 13/22] LoongArch: Add system call support Huacai Chen
2021-09-27 6:42 ` [PATCH V4 14/22] LoongArch: Add signal handling support Huacai Chen
2021-10-03 2:29 ` Al Viro
2021-10-03 9:09 ` Huacai Chen
2021-09-27 6:42 ` [PATCH V4 15/22] LoongArch: Add elf and module support Huacai Chen
2021-09-27 6:42 ` [PATCH V4 16/22] LoongArch: Add misc common routines Huacai Chen
2021-10-01 11:03 ` Peter Zijlstra
2021-10-02 10:56 ` Huacai Chen
2021-09-27 6:42 ` [PATCH V4 17/22] LoongArch: Add some library functions Huacai Chen
2021-09-27 6:42 ` [PATCH V4 18/22] LoongArch: Add PCI controller support Huacai Chen
2021-09-27 6:42 ` [PATCH V4 19/22] LoongArch: Add VDSO and VSYSCALL support Huacai Chen
2021-09-30 15:43 ` Xi Ruoyao
2021-10-02 10:53 ` Huacai Chen [this message]
2021-10-02 12:13 ` Xi Ruoyao
2021-10-02 12:44 ` Huacai Chen
2021-09-27 6:42 ` [PATCH V4 20/22] LoongArch: Add multi-processor (SMP) support Huacai Chen
2021-09-27 6:42 ` [PATCH V4 21/22] LoongArch: Add Non-Uniform Memory Access (NUMA) support Huacai Chen
2021-09-27 6:42 ` [PATCH V4 22/22] LoongArch: Add Loongson-3 default config file Huacai Chen
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