* [mips-sjhill:mips-for-linux-next 22/28] arch/mips/kernel/smp-cps.c:446:8: error: implicit declaration of function 'cpu_report_death'
@ 2017-04-11 15:13 kbuild test robot
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From: kbuild test robot @ 2017-04-11 15:13 UTC (permalink / raw)
To: Marcin Nowakowski; +Cc: kbuild-all, linux-mips, Ralf Baechle
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tree: git://git.linux-mips.org/pub/scm/sjhill/linux-sjhill.git mips-for-linux-next
head: fc048e96ed2825cfa8b71d40cfdef842b8ea59d6
commit: d0f801e14727763aadf85618917c77759fec6f81 [22/28] MIPS: Use common outgoing-CPU-notification code
config: mips-64r6el_defconfig (attached as .config)
compiler: mips64el-linux-gnuabi64-gcc (Debian 6.1.1-9) 6.1.1 20160705
reproduce:
wget https://raw.githubusercontent.com/01org/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
git checkout d0f801e14727763aadf85618917c77759fec6f81
# save the attached .config to linux build tree
make.cross ARCH=mips
All errors (new ones prefixed by >>):
arch/mips/kernel/smp-cps.c: In function 'play_dead':
>> arch/mips/kernel/smp-cps.c:446:8: error: implicit declaration of function 'cpu_report_death' [-Werror=implicit-function-declaration]
(void)cpu_report_death();
^~~~~~~~~~~~~~~~
arch/mips/kernel/smp-cps.c: In function 'cps_cpu_die':
>> arch/mips/kernel/smp-cps.c:495:7: error: implicit declaration of function 'cpu_wait_death' [-Werror=implicit-function-declaration]
if (!cpu_wait_death(cpu, 5)) {
^~~~~~~~~~~~~~
cc1: all warnings being treated as errors
vim +/cpu_report_death +446 arch/mips/kernel/smp-cps.c
440 cpu_death = CPU_DEATH_HALT;
441 break;
442 }
443 }
444
445 /* This CPU has chosen its way out */
> 446 (void)cpu_report_death();
447
448 if (cpu_death == CPU_DEATH_HALT) {
449 vpe_id = cpu_vpe_id(&cpu_data[cpu]);
450
451 pr_debug("Halting core %d VP%d\n", core, vpe_id);
452 if (cpu_has_mipsmt) {
453 /* Halt this TC */
454 write_c0_tchalt(TCHALT_H);
455 instruction_hazard();
456 } else if (cpu_has_vp) {
457 write_cpc_cl_vp_stop(1 << vpe_id);
458
459 /* Ensure that the VP_STOP register is written */
460 wmb();
461 }
462 } else {
463 pr_debug("Gating power to core %d\n", core);
464 /* Power down the core */
465 cps_pm_enter_state(CPS_PM_POWER_GATED);
466 }
467
468 /* This should never be reached */
469 panic("Failed to offline CPU %u", cpu);
470 }
471
472 static void wait_for_sibling_halt(void *ptr_cpu)
473 {
474 unsigned cpu = (unsigned long)ptr_cpu;
475 unsigned vpe_id = cpu_vpe_id(&cpu_data[cpu]);
476 unsigned halted;
477 unsigned long flags;
478
479 do {
480 local_irq_save(flags);
481 settc(vpe_id);
482 halted = read_tc_c0_tchalt();
483 local_irq_restore(flags);
484 } while (!(halted & TCHALT_H));
485 }
486
487 static void cps_cpu_die(unsigned int cpu)
488 {
489 unsigned core = cpu_data[cpu].core;
490 unsigned int vpe_id = cpu_vpe_id(&cpu_data[cpu]);
491 unsigned stat;
492 int err;
493
494 /* Wait for the cpu to choose its way out */
> 495 if (!cpu_wait_death(cpu, 5)) {
496 pr_err("CPU%u: didn't offline\n", cpu);
497 return;
498 }
---
0-DAY kernel test infrastructure Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all Intel Corporation
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2017-04-11 15:13 [mips-sjhill:mips-for-linux-next 22/28] arch/mips/kernel/smp-cps.c:446:8: error: implicit declaration of function 'cpu_report_death' kbuild test robot
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