[lttng-dev] 回复: 回复: 回复: help modpost: "__bad_cmpxchg"

["Zhang, Qiang via lttng-dev" <lttng-dev@lists.lttng.org>]

________________________________________
发件人: Jonathan Rajotte-Julien <jonathan.rajotte-julien@efficios.com>
发送时间: 2021年1月16日 3:18
收件人: Zhang, Qiang
抄送: lttng-dev
主题: Re: 回复: 回复: help modpost: "__bad_cmpxchg"

[Please note this e-mail is from an EXTERNAL e-mail address]

>Hi Quiang,
>
>Please test the attached patch.

Hello Jonathan 

Thank you for your patch, I can compile successfully after testing.

Cheers

>
>Cheers
>
>On Sat, Jan 09, 2021 at 05:40:48AM +0000, Zhang, Qiang wrote:
>
>
> ________________________________________
> 发件人: Jonathan Rajotte-Julien <jonathan.rajotte-julien@efficios.com>
> 发送时间: 2021年1月8日 0:54
> 收件人: Zhang, Qiang
> 抄送: lttng-dev
> 主题: Re: 回复: help modpost: "__bad_cmpxchg"
>
> [Please note this e-mail is from an EXTERNAL e-mail address]
>
> >Hi,
> >
> >Note
> >  The initial email was sent to the "owner" of the mailing list. Please
> >  *always* send email to the mailing list directly: lttng->dev@lists.lttng.org .
> > Otherwise we will not be interested in helping you in the future.
> >
> >Sorry forgot to ask you the following.
> >
> >What is the arm CPU you are compiling against? The more details the >more we can
> >help here.
> >
> >Please provide the .config file for the kernel (via pastebin please) and >the
>
>  Hello
>
>  Attached is the kernel configuration file
>  and compiler configuration file.
>
>  bsp is xilinx-zynq (arm32, armv7),  v5.10 kernel have delete
>  'CONFIG_OPTIMIZE_INLINING'  config option.
>
>  Cheers
>
> >compiler used. Mathieu Desnoyers (CompuDJ) might have a lead >regarding cmpxchg
> >and __bad_cmpxchg linker error trick used by the implementation and >the
> >optimized inlining config option (CONFIG_OPTIMIZE_INLINING).
> >
> >These should help us validate this lead.
>
> >
> >Cheers
> >
> >On Thu, Jan 07, 2021 at 01:20:54AM +0000, Zhang, Qiang wrote:
> >
> >
> > ________________________________________
> > 发件人: Jonathan Rajotte-Julien <jonathan.rajotte-julien@efficios.com>
> > 发送时间: 2021年1月6日 23:03
> > 收件人: Zhang, Qiang
> > 抄送: lttng-dev-owner@lists.lttng.org
> > 主题: Re: help modpost: "__bad_cmpxchg"
> >
> > [Please note this e-mail is from an EXTERNAL e-mail address]
> >
> > >Hi,
> > >
> > >What the kernel version are you compiling against?
> >
> >
> >    kernel version 5.10.2
> >    lttng-modules master branch commit :
> >    61e631e93e512b636ea6d52796bcce1c485a551b
> >
> >     Cheers
> >
> > >
> > >Cheers
> > >
> > >On Wed, Jan 06, 2021 at 05:20:06AM +0000, Zhang, Qiang wrote:
> > >
> > >
> > > The following error occurred when I compiled lttng modules under armv7 architecture
> > >
> > > ERROR: modpost: "__bad_cmpxchg" [/buildarea1/OnDemand_CI_Build_World/build_dir/12251727-build_world/xilinx-zynq-standard-std-OE/build/tmp-glibc/work/xilinx_zynq-wrs-linux-gnueabi/lttng-modules/2.12.3+gitAUTOINC+61e631e93e-r0/git/src/lttng-counter-client-percpu-64-modular.ko] undefined!
> > >
> > > ERROR: modpost: "__bad_cmpxchg" [/buildarea1/OnDemand_CI_Build_World/build_dir/12251727-build_world/xilinx-zynq-standard-std-OE/build/tmp-glibc/work/xilinx_zynq-wrs-linux-gnueabi/lttng-modules/2.12.3+gitAUTOINC+61e631e93e-r0/git/src/lttng-counter-client-percpu-32-modular.ko] undefined!
> > >
> > > I find  under the condition of
> > >
> > > COUNTER_SIZE_32_BIT,  cmpxchg_local  function trigger error in counter-api.h file.
> > >
> > > is cmpxchg_local is support in amv7?
> >
> > --
> > Jonathan Rajotte-Julien
> > EfficiOS
>
> --
> Jonathan Rajotte-Julien
> EfficiOS


> ./arm-wrs-linux-gnueabi-gcc -v
> Using built-in specs.
> COLLECT_GCC=./arm-wrs-linux-gnueabi-gcc
> COLLECT_LTO_WRAPPER=/buildarea1/qzhang2/jira/LINCD-3904/build/tmp-glibc/work/armv7at2hf-neon-wrs-linux-gnueabi/libgcc/10.2.0-r0/recipe-sysroot-native/usr/bin/arm-wrs-linux-gnueabi/../../libexec/arm-wrs-linux-gnueabi/gcc/arm-wrs-linux-gnueabi/10.2.0/lto-wrapper
> Target: arm-wrs-linux-gnueabi
> Configured with: ../../../../../../work-shared/gcc-10.2.0-r0/gcc-10.2.0/configure --build=x86_64-linux --host=x86_64-linux --target=arm-wrs-linux-gnueabi --prefix=/host-native/usr --exec_prefix=/host-native/usr --bindir=/host-native/usr/bin/arm-wrs-linux-gnueabi --sbindir=/host-native/usr/bin/arm-wrs-linux-gnueabi --libexecdir=/host-native/usr/libexec/arm-wrs-linux-gnueabi --datadir=/host-native/usr/share --sysconfdir=/host-native/etc --sharedstatedir=/host-native/com --localstatedir=/host-native/var --libdir=/host-native/usr/lib/arm-wrs-linux-gnueabi --includedir=/host-native/usr/include --oldincludedir=/host-native/usr/include --infodir=/host-native/usr/share/info --mandir=/host-native/usr/share/man --disable-silent-rules --disable-dependency-tracking --with-libtool-sysroot=/host-native --enable-clocale=generic --with-gnu-ld --enable-shared --enable-languages=c,c++ --enable-threads=posix --disable-multilib --enable-default-pie --enable-c99 --enable-long-long --enable-symvers=gnu --enable-libstdcxx-pch --program-prefix=arm-wrs-linux-gnueabi- --without-local-prefix --disable-install-libiberty --disable-libssp --enable-libitm --enable-lto --disable-bootstrap --with-system-zlib --with-linker-hash-style=sysv --enable-linker-build-id --with-ppl=no --with-cloog=no --enable-checking=release --enable-cheaders=c_global --without-isl --with-gxx-include-dir=/not/exist/usr/include/c++/10.2.0 --with-sysroot=/not/exist --with-build-sysroot=/host --enable-poison-system-directories --with-system-zlib --disable-nls --with-glibc-version=2.28 --enable-initfini-array
> Thread model: posix
> Supported LTO compression algorithms: zlib
> gcc version 10.2.0 (GCC)
>


--
Jonathan Rajotte-Julien
EfficiOS
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