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

[Zhang, Qiang]

________________________________________
发件人: Jonathan Rajotte-Julien <jonathan.rajotte-julien at 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 at 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

Hi 

Can repeat this problem?
Is the problem related to compilation tools？

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 at efficios.com>
> 发送时间: 2021年1月6日 23:03
> 收件人: Zhang, Qiang
> 抄送: lttng-dev-owner at 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