linux-kernel - Re: [PATCH v3 0/2] perf: arm64: Kernel support for Dwarf unwinding through SVE functions

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Message-ID: <c8f9d6d2-4397-3bbd-da97-865cca56d73a@arm.com>
Date:   Fri, 23 Sep 2022 13:43:20 +0100
From:   James Clark <james.clark@....com>
To:     Will Deacon <will@...nel.org>
Cc:     catalin.marinas@....com, kernel-team@...roid.com,
        linux-perf-users@...r.kernel.org, linux-kernel@...r.kernel.org,
        acme@...nel.org, john.garry@...wei.com,
        Jonathan Corbet <corbet@....net>, leo.yan@...aro.org,
        broonie@...nel.org, linux-doc@...r.kernel.org,
        Mark Rutland <mark.rutland@....com>,
        linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH v3 0/2] perf: arm64: Kernel support for Dwarf unwinding
 through SVE functions



On 23/09/2022 13:36, Will Deacon wrote:
> On Fri, Sep 23, 2022 at 10:32:15AM +0100, James Clark wrote:
>>
>>
>> On 22/09/2022 21:33, Will Deacon wrote:
>>> On Thu, 1 Sep 2022 14:26:56 +0100, James Clark wrote:
>>>> I'm resubmitting this with a few of the changes suggested by Will on V2.
>>>>
>>>> I haven't made any changes regarding the open questions about the
>>>> discoverability or saving the new reg and passing to output_sample()
>>>> because I think it's best to be consistent with the implementations on
>>>> other platforms first. I have explained in more detail on v2 [1].
>>>>
>>>> [...]
>>>
>>> Applied to will (for-next/perf), thanks!
>>>
>>> [1/2] perf: arm64: Add SVE vector granule register to user regs
>>>       https://git.kernel.org/will/c/cbb0c02caf4b
>>> [2/2] arm64/sve: Add Perf extensions documentation
>>>       https://git.kernel.org/will/c/1f2906d1e10a
>>>
>>> Cheers,
>>
>> Thanks Will. Sorry about the build, I will fix my config for next time.
> 
> No problem. For some reason, I was unable to repro the failure locally.
> Maybe it's a GCC thing?

For me I needed CONFIG_HEADERS_INSTALL and CONFIG_UAPI_HEADER_TEST to
reproduce it. I was already using gcc, so not sure if it's depends on
that or not.

> 
> Will