> -----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.
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
