linux-kernel - Re: [External] Re: [PATCH v3 3/3] arm64/ftrace: Make function graph use ftrace directly

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Message-ID: <69edba11-6d15-b80a-5840-86834101f76d@bytedance.com>
Date:   Thu, 7 Apr 2022 10:26:53 +0800
From:   Chengming Zhou <zhouchengming@...edance.com>
To:     mark.rutland@....com
Cc:     Steven Rostedt <rostedt@...dmis.org>, mingo@...hat.com,
        tglx@...utronix.de, catalin.marinas@....com, will@...nel.org,
        dave.hansen@...ux.intel.com, broonie@...nel.org, x86@...nel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        songmuchun@...edance.com, qirui.001@...edance.com
Subject: Re: [External] Re: [PATCH v3 3/3] arm64/ftrace: Make function graph
 use ftrace directly

On 2022/3/22 22:49, Steven Rostedt wrote:
> On Tue, 22 Mar 2022 22:14:11 +0800
> Chengming Zhou <zhouchengming@...edance.com> wrote:
> 
>>> You deleted ftrace_graph_caller above from entry-ftrace.S, if we can get
>>> here with some options, wouldn't that break the build?  
>>
>> The above ftrace_graph_caller deleted is only for CONFIG_DYNAMIC_FTRACE_WITH_REGS,
>> and I tried using a low gcc version that doesn't select HAVE_DYNAMIC_FTRACE_WITH_REGS,
>> it can build success.
> 
> OK, I didn't look too deep into this.
> 
> I don't have an issue with this patch, but it needs to go through the arm64
> tree.

Hi Mark, would you mind picking this up for arm64 tree?

Thanks.

> 
> -- Steve