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From:   Besar Wicaksono <bwicaksono@nvidia.com>
To:     Stephen Rothwell <sfr@canb.auug.org.au>,
        Catalin Marinas <catalin.marinas@arm.com>,
        Will Deacon <will@kernel.org>
CC:     Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
        Linux Next Mailing List <linux-next@vger.kernel.org>,
        Suzuki Poulose <suzuki.poulose@arm.com>
Subject: RE: linux-next: build failure after merge of the arm64 tree
Thread-Topic: linux-next: build failure after merge of the arm64 tree
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Date:   Tue, 15 Nov 2022 23:52:51 +0000
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References: <20221116090401.0cd5ccc7@canb.auug.org.au>
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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
>=20
> Hi all,
>=20
> After merging the arm64 tree, today's linux-next build (x86_64
> allmodconfig) failed like this:
>=20
> 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 o=
f
> function 'get_acpi_id_for_cpu' [-Werror=3Dimplicit-function-declaration]
>  1114 |                             get_acpi_id_for_cpu(cpu)) {
>       |                             ^~~~~~~~~~~~~~~~~~~
>=20

+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 issu=
e.

Regards,
Besar

> Caused by commit
>=20
>   e37dfd65731d ("perf: arm_cspmu: Add support for ARM CoreSight PMU
> driver")
>=20
> I have used the arm64 tree from next-20221115 for today.
>=20
> --
> Cheers,
> Stephen Rothwell