linux-kernel - Re: [PATCH] arm64: add HAVE_LATENCYTOP_SUPPORT config

Open Source and information security mailing list archives

Date:	Mon, 14 Dec 2015 14:02:18 -0800
From:	"Shi, Yang" <yang.shi@...aro.org>
To:	Heiko Carstens <heiko.carstens@...ibm.com>,
	Will Deacon <will.deacon@....com>
Cc:	Catalin Marinas <catalin.marinas@....com>,
	yalin wang <yalin.wang2010@...il.com>,
	linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH] arm64: add HAVE_LATENCYTOP_SUPPORT config

Hi folks,

I tried to enable latencytop for arm64 and came across this discussion, 
so any plan about when this will get merged into mainline? 4.5 merge window?

Thanks,
Yang

On 11/10/2015 3:34 AM, Heiko Carstens wrote:
>> From: Will Deacon <will.deacon@....com>
>> Date: Tue, 10 Nov 2015 11:10:04 +0000
>> Subject: [PATCH] Kconfig: remove HAVE_LATENCYTOP_SUPPORT
>>
>> As illustrated by a3afe70b83fd ("[S390] latencytop s390 support."),
>> HAVE_LATENCYTOP_SUPPORT is defined by an architecture to advertise an
>> implementation of save_stack_trace_tsk.
>>
>> However, as of 9212ddb5eada ("stacktrace: provide save_stack_trace_tsk()
>> weak alias") a dummy implementation is provided if STACKTRACE=y.
>> Given that LATENCYTOP already depends on STACKTRACE_SUPPORT and selects
>> STACKTRACE, we can remove HAVE_LATENCYTOP_SUPPORT altogether.
>>
>> Signed-off-by: Will Deacon <will.deacon@....com>
>> ---
>>   arch/arc/Kconfig        | 3 ---
>>   arch/arm/Kconfig        | 5 -----
>>   arch/metag/Kconfig      | 3 ---
>>   arch/microblaze/Kconfig | 3 ---
>>   arch/parisc/Kconfig     | 3 ---
>>   arch/powerpc/Kconfig    | 3 ---
>>   arch/s390/Kconfig       | 3 ---
>>   arch/sh/Kconfig         | 3 ---
>>   arch/sparc/Kconfig      | 4 ----
>>   arch/unicore32/Kconfig  | 3 ---
>>   arch/x86/Kconfig        | 3 ---
>>   lib/Kconfig.debug       | 1 -
>>   12 files changed, 37 deletions(-)
>
> Acked-by: Heiko Carstens <heiko.carstens@...ibm.com>
>
>
> _______________________________________________
> linux-arm-kernel mailing list
> linux-arm-kernel@...ts.infradead.org
> http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
>

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