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SubjectRe: [PATCH v3 16/16] ARM: Remove custom IRQ stat accounting
Hi Marc,

I love your patch! Yet something to improve:

[auto build test ERROR on arm64/for-next/core]
[also build test ERROR on arm/for-next v5.9-rc3 next-20200828]
[cannot apply to tip/irq/core]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in]

base: for-next/core
config: arm-realview_defconfig (attached as .config)
compiler: arm-linux-gnueabi-gcc (GCC) 9.3.0
reproduce (this is a W=1 build):
wget -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# save the attached .config to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=arm

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <>

All errors (new ones prefixed by >>):

arch/arm/kernel/smp.c: In function 'show_ipi_list':
>> arch/arm/kernel/smp.c:537:27: error: implicit declaration of function 'kstat_irqs_cpu' [-Werror=implicit-function-declaration]
537 | seq_printf(p, "%10u ", kstat_irqs_cpu(irq, cpu));
| ^~~~~~~~~~~~~~
arch/arm/kernel/smp.c: At top level:
arch/arm/kernel/smp.c:559:6: warning: no previous prototype for 'arch_irq_work_raise' [-Wmissing-prototypes]
559 | void arch_irq_work_raise(void)
| ^~~~~~~~~~~~~~~~~~~
arch/arm/kernel/smp.c:774:6: warning: no previous prototype for 'panic_smp_self_stop' [-Wmissing-prototypes]
774 | void panic_smp_self_stop(void)
| ^~~~~~~~~~~~~~~~~~~
arch/arm/kernel/smp.c:786:5: warning: no previous prototype for 'setup_profiling_timer' [-Wmissing-prototypes]
786 | int setup_profiling_timer(unsigned int multiplier)
| ^~~~~~~~~~~~~~~~~~~~~
cc1: some warnings being treated as errors

git remote add linux-review
git fetch --no-tags linux-review Marc-Zyngier/arm-arm64-Turning-IPIs-into-normal-interrupts/20200901-225407
git checkout 780a93ca7a729bf2414f45d5322cc62f43ae4070
vim +/kstat_irqs_cpu +537 arch/arm/kernel/smp.c

528 void show_ipi_list(struct seq_file *p, int prec)
529 {
530 unsigned int cpu, i;
532 for (i = 0; i < NR_IPI; i++) {
533 unsigned int irq = irq_desc_get_irq(ipi_desc[i]);
534 seq_printf(p, "%*s%u: ", prec - 1, "IPI", i);
536 for_each_online_cpu(cpu)
> 537 seq_printf(p, "%10u ", kstat_irqs_cpu(irq, cpu));
539 seq_printf(p, " %s\n", ipi_types[i]);
540 }
541 }

0-DAY CI Kernel Test Service, Intel Corporation
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