[PATCH 16/17] arch: remove HAVE_COPY_THREAD_TLS

[Greentime Hu]

Christian Brauner <christian.brauner at ubuntu.com> 於 2020年6月23日 週二 上午7:46寫道：
>
> All architectures support copy_thread_tls() now, so remove the legacy
> copy_thread() function and the HAVE_COPY_THREAD_TLS config option. Everyone
> uses the same process creation calling convention based on
> copy_thread_tls() and struct kernel_clone_args. This will make it easier to
> maintain the core process creation code under kernel/, simplifies the
> callpaths and makes the identical for all architectures.
>
> Cc: Richard Henderson <rth at twiddle.net>
> Cc: Ivan Kokshaysky <ink at jurassic.park.msu.ru>
> Cc: Matt Turner <mattst88 at gmail.com>
> Cc: Vineet Gupta <vgupta at synopsys.com>
> Cc: Russell King <linux at armlinux.org.uk>
> Cc: Catalin Marinas <catalin.marinas at arm.com>
> Cc: Will Deacon <will at kernel.org>
> Cc: Mark Salter <msalter at redhat.com>
> Cc: Aurelien Jacquiot <jacquiot.aurelien at gmail.com>
> Cc: Guo Ren <guoren at kernel.org>
> Cc: Yoshinori Sato <ysato at users.sourceforge.jp>
> Cc: Brian Cain <bcain at codeaurora.org>
> Cc: Tony Luck <tony.luck at intel.com>
> Cc: Fenghua Yu <fenghua.yu at intel.com>
> Cc: Geert Uytterhoeven <geert at linux-m68k.org>
> Cc: Michal Simek <monstr at monstr.eu>
> Cc: Thomas Bogendoerfer <tsbogend at alpha.franken.de>
> Cc: Nick Hu <nickhu at andestech.com>
> Cc: Greentime Hu <green.hu at gmail.com>
> Cc: Vincent Chen <deanbo422 at gmail.com>
> Cc: Ley Foon Tan <ley.foon.tan at intel.com>
> Cc: Jonas Bonn <jonas at southpole.se>
> Cc: Stefan Kristiansson <stefan.kristiansson at saunalahti.fi>
> Cc: Stafford Horne <shorne at gmail.com>
> Cc: "James E.J. Bottomley" <James.Bottomley at HansenPartnership.com>
> Cc: Helge Deller <deller at gmx.de>
> Cc: Michael Ellerman <mpe at ellerman.id.au>
> Cc: Benjamin Herrenschmidt <benh at kernel.crashing.org>
> Cc: Paul Mackerras <paulus at samba.org>
> Cc: Paul Walmsley <paul.walmsley at sifive.com>
> Cc: Palmer Dabbelt <palmer at dabbelt.com>
> Cc: Albert Ou <aou at eecs.berkeley.edu>
> Cc: Heiko Carstens <heiko.carstens at de.ibm.com>
> Cc: Vasily Gorbik <gor at linux.ibm.com>
> Cc: Christian Borntraeger <borntraeger at de.ibm.com>
> Cc: Rich Felker <dalias at libc.org>
> Cc: "David S. Miller" <davem at davemloft.net>
> Cc: Jeff Dike <jdike at addtoit.com>
> Cc: Richard Weinberger <richard at nod.at>
> Cc: Anton Ivanov <anton.ivanov at cambridgegreys.com>
> Cc: Guan Xuetao <gxt at pku.edu.cn>
> Cc: Thomas Gleixner <tglx at linutronix.de>
> Cc: Ingo Molnar <mingo at redhat.com>
> Cc: x86 at kernel.org
> Cc: Peter Zijlstra <peterz at infradead.org>
> Cc: Kees Cook <keescook at chromium.org>
> Cc: Mike Rapoport <rppt at linux.ibm.com>
> Cc: "Matthew Wilcox
> Cc: Al Viro <viro at zeniv.linux.org.uk>
> Cc: linux-kernel at vger.kernel.org
> Cc: linux-alpha at vger.kernel.org
> Cc: linux-snps-arc at lists.infradead.org
> Cc: linux-arm-kernel at lists.infradead.org
> Cc: linux-c6x-dev at linux-c6x.org
> Cc: linux-csky at vger.kernel.org
> Cc: uclinux-h8-devel at lists.sourceforge.jp
> Cc: linux-hexagon at vger.kernel.org
> Cc: linux-ia64 at vger.kernel.org
> Cc: linux-m68k at lists.linux-m68k.org
> Cc: linux-mips at vger.kernel.org
> Cc: openrisc at lists.librecores.org
> Cc: linux-parisc at vger.kernel.org
> Cc: linuxppc-dev at lists.ozlabs.org
> Cc: linux-riscv at lists.infradead.org
> Cc: linux-s390 at vger.kernel.org
> Cc: linux-sh at vger.kernel.org
> Cc: sparclinux at vger.kernel.org
> Cc: linux-um at lists.infradead.org
> Cc: linux-xtensa at linux-xtensa.org
> Signed-off-by: Christian Brauner <christian.brauner at ubuntu.com>
> [...]
> diff --git a/arch/nds32/Kconfig b/arch/nds32/Kconfig
> index 7b6eaca81cce..e30298e99e1b 100644
> --- a/arch/nds32/Kconfig
> +++ b/arch/nds32/Kconfig
> @@ -48,7 +48,6 @@ config NDS32
>         select HAVE_FUNCTION_GRAPH_TRACER
>         select HAVE_FTRACE_MCOUNT_RECORD
>         select HAVE_DYNAMIC_FTRACE
> -       select HAVE_COPY_THREAD_TLS
>         help
>           Andes(nds32) Linux support.

Hi Christian, Thank you.
Acked-by: Greentime Hu <green.hu at gmail.com>