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SubjectRE: linux-next: build failure after merge of the arm64 tree
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> -----Original Message-----
> From: Stephen Rothwell <sfr@canb.auug.org.au>
> Sent: Tuesday, November 15, 2022 4:04 PM
> To: Catalin Marinas <catalin.marinas@arm.com>; Will Deacon
> <will@kernel.org>
> Cc: Besar Wicaksono <bwicaksono@nvidia.com>; Linux Kernel Mailing List
> <linux-kernel@vger.kernel.org>; Linux Next Mailing List <linux-
> next@vger.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

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