Re: [RFC] perf uprobe: Skip prologue if program compiled without optimization

From	Ravi Bangoria <ravi.bangoria@linux.vnet.ibm.com>
Newsgroups	linux.kernel
Subject	Re: [RFC] perf uprobe: Skip prologue if program compiled without optimization
Date	2016-08-01 11:10 +0200
Message-ID	<s1hot-4kK-7@gated-at.bofh.it> (permalink)
References	<rZUDD-7vd-17@gated-at.bofh.it> <s0sP0-5mU-31@gated-at.bofh.it>
Organization	linux.* mail to news gateway

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On Saturday 30 July 2016 08:34 AM, Masami Hiramatsu wrote:
> On Thu, 28 Jul 2016 20:01:51 +0530
> Ravi Bangoria <ravi.bangoria@linux.vnet.ibm.com> wrote:
>
>> Function prologue prepares stack and registers before executing function
>> logic. When target program is compiled without optimization, function
>> parameter information is only valid after prologue. When we probe entrypc
>> of the function, and try to record function parameter, it contains
>> garbage value.
> Right! :)

Thanks Masami for review.

I've sent patch with changes you suggested. Please review it.

-Ravi

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[RFC] perf uprobe: Skip prologue if program compiled without optimization Ravi Bangoria <ravi.bangoria@linux.vnet.ibm.com> - 2016-07-28 16:40 +0200
  Re: [RFC] perf uprobe: Skip prologue if program compiled without  optimization Masami Hiramatsu <mhiramat@kernel.org> - 2016-07-30 05:10 +0200
    Re: [RFC] perf uprobe: Skip prologue if program compiled without  optimization Ravi Bangoria <ravi.bangoria@linux.vnet.ibm.com> - 2016-08-01 11:10 +0200

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