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

[Suzuki K Poulose]

On 15/11/2022 23:52, Besar Wicaksono wrote:
> > -----Original Message-----
> > From: Stephen Rothwell <sfr@xxxxxxxxxxxxxxxx>
> > Sent: Tuesday, November 15, 2022 4:04 PM
> > To: Catalin Marinas <catalin.marinas@xxxxxxx>; Will Deacon
> > <will@xxxxxxxxxx>
> > Cc: Besar Wicaksono <bwicaksono@xxxxxxxxxx>; Linux Kernel Mailing List
> > <linux-kernel@xxxxxxxxxxxxxxx>; Linux Next Mailing List <linux-
> > next@xxxxxxxxxxxxxxx>
> > 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.

Please make this dependent on ARM64. That should resolve the failure.
As such the helper is available with ARM64 && ACPI.

Suzuki

> 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