linux-kernel - RE: linux-next: build failure after merge of the arm64 tree

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Date:   Tue, 15 Nov 2022 23:52:51 +0000
From:   Besar Wicaksono <bwicaksono@...dia.com>
To:     Stephen Rothwell <sfr@...b.auug.org.au>,
        Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will@...nel.org>
CC:     Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Linux Next Mailing List <linux-next@...r.kernel.org>,
        Suzuki Poulose <suzuki.poulose@....com>
Subject: RE: linux-next: build failure after merge of the arm64 tree



> -----Original Message-----
> From: Stephen Rothwell <sfr@...b.auug.org.au>
> Sent: Tuesday, November 15, 2022 4:04 PM
> To: Catalin Marinas <catalin.marinas@....com>; Will Deacon
> <will@...nel.org>
> Cc: Besar Wicaksono <bwicaksono@...dia.com>; Linux Kernel Mailing List
> <linux-kernel@...r.kernel.org>; Linux Next Mailing List <linux-
> next@...r.kernel.org>
> Subject: linux-next: build failure after merge of the arm64 tree
> 
> Hi all,
> 
> After merging the arm64 tree, today's linux-next build (x86_64
> allmodconfig) failed like this:
> 
> drivers/perf/arm_cspmu/arm_cspmu.c: In function 'arm_cspmu_get_cpus':
> drivers/perf/arm_cspmu/arm_cspmu.c:1114:29: error: implicit declaration of
> function 'get_acpi_id_for_cpu' [-Werror=implicit-function-declaration]
>  1114 |                             get_acpi_id_for_cpu(cpu)) {
>       |                             ^~~~~~~~~~~~~~~~~~~
> 

+CC Suzuki for awareness.

This function is used for searching CPU with matching ACPI Processor ID in PPTT.
I will check if adding PPTT dependency to arm_cspmu would resolve this issue.

Regards,
Besar

> Caused by commit
> 
>   e37dfd65731d ("perf: arm_cspmu: Add support for ARM CoreSight PMU
> driver")
> 
> I have used the arm64 tree from next-20221115 for today.
> 
> --
> Cheers,
> Stephen Rothwell