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RE: [PATCH] arm: Fix backtrace generation when IPI is masked

From "Hillf Danton" <hillf.zj@alibaba-inc.com>
Newsgroups linux.kernel
Subject RE: [PATCH] arm: Fix backtrace generation when IPI is masked
Date 2015-09-15 10:30 +0200
Message-ID <q8TMK-7Ks-17@gated-at.bofh.it> (permalink)
References <q8SGZ-6ef-11@gated-at.bofh.it> <q8SGZ-6ef-9@gated-at.bofh.it> <q8TD4-7zq-23@gated-at.bofh.it>
Organization linux.* mail to news gateway

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> > Better if dump_stack() is added in a separate patch, given that
> > it is not mentioned in commit message.
> 
> Adding dump_stack() is mentioned in passing ("Some small changes to the
> generic code are required to support this.") but you're right that the
> reason for the change is not explicitly called out.
> 
> I can certainly respin as two patches but perhaps its better just to
> improve the commit message. Something like:
> 
>  > This can be fixed by detecting that the calling context cannot be
>  > preempted and issuing the backtrace directly in this case. Issuing
>  > directly leaves us without any pt_regs to pass to nmi_cpu_backtrace().
>  > Modify the generic code to call dump_stack() when its argument is
>  > NULL.
> 
Looks nice!

thanks
Hillf

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RE: [PATCH] arm: Fix backtrace generation when IPI is masked "Hillf Danton" <hillf.zj@alibaba-inc.com> - 2015-09-15 09:20 +0200
  Re: [PATCH] arm: Fix backtrace generation when IPI is masked Daniel Thompson <daniel.thompson@linaro.org> - 2015-09-15 10:20 +0200
    RE: [PATCH] arm: Fix backtrace generation when IPI is masked "Hillf Danton" <hillf.zj@alibaba-inc.com> - 2015-09-15 10:30 +0200

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