How to compile linux kernel for P4080 with no SMP (just one cpu)

paramahansapolo — Thu, 05 Jan 2017 08:05:54 GMT

Hello,

I'm trying to compile the linux kernel (SDK 2.0) with no SMP support, since I intended to run it just on one CPU.

I disabled CONFIG_SMP in menuconfig, after that compilation fails with the following error message

CC arch/powerpc/sysdev/fsl_rcpm.o
CC arch/powerpc/sysdev/fsl_lbc.o
/home/ppolo/Workspace/QorIQ-SDK-V2.0-20160527-yocto/build_p4080ds/tmp/work-shared/p4080ds/kernel-source/arch/powerpc/sysdev/fsl_rcpm.c: In function 'rcpm_v1_irq_mask':
/home/ppolo/Workspace/QorIQ-SDK-V2.0-20160527-yocto/build_p4080ds/tmp/work-shared/p4080ds/kernel-source/arch/powerpc/sysdev/fsl_rcpm.c:32:2: error: implicit declaration of function 'get_hard_smp_processor_id' [-Werror=implicit-function-declaration]
int hw_cpu = get_hard_smp_processor_id(cpu);
^
cc1: all warnings being treated as errors
make[3]: *** [arch/powerpc/sysdev/fsl_rcpm.o] Error 1
make[3]: *** Waiting for unfinished jobs....
make[2]: *** [arch/powerpc/sysdev] Error 2
make[1]: *** [sub-make] Error 2
make: *** [__sub-make] Error 2
ERROR: oe_runmake failed
ERROR: Function failed: do_compile (log file is located at /home/ppolo/Workspace/QorIQ-SDK-V2.0-20160527-yocto/build_p4080ds/tmp/work/p4080ds-fsl-linux/linux-qoriq/4.1-r0/temp/log.do_compile.16729)

Does anybody knows what other step has to be taken in order to compile the linux kernel with no SMP support?

Many thank in advance,

-Paramahansa

Re: How to compile linux kernel for P4080 with no SMP (just one cpu)

Pavel — Thu, 12 Jan 2017 02:07:18 GMT

Yes, it is not possible. This BSP provides kernel generation minimum for two cores.

Have a great day,
Pavel Chubakov

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topic How to compile linux kernel for P4080 with no SMP (just one cpu) in P-Series

How to compile linux kernel for P4080 with no SMP (just one cpu)

Re: How to compile linux kernel for P4080 with no SMP (just one cpu)