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* [peterz-queue:WIP.x86/iopl 3/9] arch/x86/kernel/cpu/common.c:1886:6: error: implicit declaration of function 'is_uv_system'
@ 2019-11-07 10:35 kbuild test robot
  0 siblings, 0 replies; only message in thread
From: kbuild test robot @ 2019-11-07 10:35 UTC (permalink / raw)
  To: kbuild-all

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tree:   https://git.kernel.org/pub/scm/linux/kernel/git/peterz/queue.git WIP.x86/iopl
head:   90691cbd79871ddb1f457caed527ec9aada0c2ae
commit: e8d8b8bbdd5563540bbb597ed09d40b71dfdad02 [3/9] x86/cpu: Unify cpu_init()
config: i386-randconfig-a003-201944 (attached as .config)
compiler: gcc-5 (Ubuntu 5.5.0-12ubuntu1) 5.5.0 20171010
reproduce:
        git checkout e8d8b8bbdd5563540bbb597ed09d40b71dfdad02
        # save the attached .config to linux build tree
        make ARCH=i386 

If you fix the issue, kindly add following tag
Reported-by: kbuild test robot <lkp@intel.com>

All errors (new ones prefixed by >>):

   arch/x86/kernel/cpu/common.c: In function 'cpu_init':
>> arch/x86/kernel/cpu/common.c:1886:6: error: implicit declaration of function 'is_uv_system' [-Werror=implicit-function-declaration]
     if (is_uv_system())
         ^
>> arch/x86/kernel/cpu/common.c:1887:3: error: implicit declaration of function 'uv_cpu_init' [-Werror=implicit-function-declaration]
      uv_cpu_init();
      ^
   cc1: some warnings being treated as errors

vim +/is_uv_system +1886 arch/x86/kernel/cpu/common.c

b2e2ba578e016a arch/x86/kernel/cpu/common.c  Chang S. Bae           2018-09-18  1809  
d2cbcc49e2bfd6 arch/i386/kernel/cpu/common.c Rusty Russell          2007-05-02  1810  /*
d2cbcc49e2bfd6 arch/i386/kernel/cpu/common.c Rusty Russell          2007-05-02  1811   * cpu_init() initializes state that is per-CPU. Some data is already
d2cbcc49e2bfd6 arch/i386/kernel/cpu/common.c Rusty Russell          2007-05-02  1812   * initialized (naturally) in the bootstrap process, such as the GDT
d2cbcc49e2bfd6 arch/i386/kernel/cpu/common.c Rusty Russell          2007-05-02  1813   * and IDT. We reload them nevertheless, this function acts as a
d2cbcc49e2bfd6 arch/i386/kernel/cpu/common.c Rusty Russell          2007-05-02  1814   * 'CPU state barrier', nothing should get across.
d2cbcc49e2bfd6 arch/i386/kernel/cpu/common.c Rusty Russell          2007-05-02  1815   */
148f9bb87745ed arch/x86/kernel/cpu/common.c  Paul Gortmaker         2013-06-18  1816  void cpu_init(void)
1ba76586f778be arch/x86/kernel/cpu/common.c  Yinghai Lu             2008-09-04  1817  {
e8d8b8bbdd5563 arch/x86/kernel/cpu/common.c  Thomas Gleixner        2019-10-25  1818  	struct tss_struct *tss = this_cpu_ptr(&cpu_tss_rw);
e8d8b8bbdd5563 arch/x86/kernel/cpu/common.c  Thomas Gleixner        2019-10-25  1819  	struct task_struct *cur = current;
f6ef73224a0f04 arch/x86/kernel/cpu/common.c  Thomas Gleixner        2019-04-14  1820  	int cpu = raw_smp_processor_id();
1ba76586f778be arch/x86/kernel/cpu/common.c  Yinghai Lu             2008-09-04  1821  
ce4b1b16502b18 arch/x86/kernel/cpu/common.c  Igor Mammedov          2014-06-20  1822  	wait_for_master_cpu(cpu);
ce4b1b16502b18 arch/x86/kernel/cpu/common.c  Igor Mammedov          2014-06-20  1823  
e8d8b8bbdd5563 arch/x86/kernel/cpu/common.c  Thomas Gleixner        2019-10-25  1824  	ucode_cpu_init(cpu);
0f3fa48a7eaf5d arch/x86/kernel/cpu/common.c  Ingo Molnar            2009-03-14  1825  
e7a22c1ebcc1ca arch/x86/kernel/cpu/common.c  Brian Gerst            2009-01-19  1826  #ifdef CONFIG_NUMA
27fd185f3d9e83 arch/x86/kernel/cpu/common.c  Fenghua Yu             2012-11-13  1827  	if (this_cpu_read(numa_node) == 0 &&
e534c7c5f8d6e9 arch/x86/kernel/cpu/common.c  Lee Schermerhorn       2010-05-26  1828  	    early_cpu_to_node(cpu) != NUMA_NO_NODE)
e534c7c5f8d6e9 arch/x86/kernel/cpu/common.c  Lee Schermerhorn       2010-05-26  1829  		set_numa_node(early_cpu_to_node(cpu));
e7a22c1ebcc1ca arch/x86/kernel/cpu/common.c  Brian Gerst            2009-01-19  1830  #endif
b2e2ba578e016a arch/x86/kernel/cpu/common.c  Chang S. Bae           2018-09-18  1831  	setup_getcpu(cpu);
1ba76586f778be arch/x86/kernel/cpu/common.c  Yinghai Lu             2008-09-04  1832  
2eaad1fddd7450 arch/x86/kernel/cpu/common.c  Mike Travis            2009-12-10  1833  	pr_debug("Initializing CPU#%d\n", cpu);
1ba76586f778be arch/x86/kernel/cpu/common.c  Yinghai Lu             2008-09-04  1834  
e8d8b8bbdd5563 arch/x86/kernel/cpu/common.c  Thomas Gleixner        2019-10-25  1835  	if (IS_ENABLED(CONFIG_X86_64) || cpu_feature_enabled(X86_FEATURE_VME) ||
e8d8b8bbdd5563 arch/x86/kernel/cpu/common.c  Thomas Gleixner        2019-10-25  1836  	    boot_cpu_has(X86_FEATURE_TSC) || boot_cpu_has(X86_FEATURE_DE))
375074cc736ab1 arch/x86/kernel/cpu/common.c  Andy Lutomirski        2014-10-24  1837  		cr4_clear_bits(X86_CR4_VME|X86_CR4_PVI|X86_CR4_TSD|X86_CR4_DE);
1ba76586f778be arch/x86/kernel/cpu/common.c  Yinghai Lu             2008-09-04  1838  
1ba76586f778be arch/x86/kernel/cpu/common.c  Yinghai Lu             2008-09-04  1839  	/*
1ba76586f778be arch/x86/kernel/cpu/common.c  Yinghai Lu             2008-09-04  1840  	 * Initialize the per-CPU GDT with the boot GDT,
1ba76586f778be arch/x86/kernel/cpu/common.c  Yinghai Lu             2008-09-04  1841  	 * and set up the GDT descriptor:
1ba76586f778be arch/x86/kernel/cpu/common.c  Yinghai Lu             2008-09-04  1842  	 */
552be871e67ff5 arch/x86/kernel/cpu/common.c  Brian Gerst            2009-01-30  1843  	switch_to_new_gdt(cpu);
cf910e83ae2369 arch/x86/kernel/cpu/common.c  Seiji Aguchi           2013-06-20  1844  	load_current_idt();
1ba76586f778be arch/x86/kernel/cpu/common.c  Yinghai Lu             2008-09-04  1845  
e8d8b8bbdd5563 arch/x86/kernel/cpu/common.c  Thomas Gleixner        2019-10-25  1846  	if (IS_ENABLED(CONFIG_X86_64)) {
e8d8b8bbdd5563 arch/x86/kernel/cpu/common.c  Thomas Gleixner        2019-10-25  1847  		loadsegment(fs, 0);
e8d8b8bbdd5563 arch/x86/kernel/cpu/common.c  Thomas Gleixner        2019-10-25  1848  		memset(cur->thread.tls_array, 0, GDT_ENTRY_TLS_ENTRIES * 8);
1ba76586f778be arch/x86/kernel/cpu/common.c  Yinghai Lu             2008-09-04  1849  		syscall_init();
1ba76586f778be arch/x86/kernel/cpu/common.c  Yinghai Lu             2008-09-04  1850  
1ba76586f778be arch/x86/kernel/cpu/common.c  Yinghai Lu             2008-09-04  1851  		wrmsrl(MSR_FS_BASE, 0);
1ba76586f778be arch/x86/kernel/cpu/common.c  Yinghai Lu             2008-09-04  1852  		wrmsrl(MSR_KERNEL_GS_BASE, 0);
1ba76586f778be arch/x86/kernel/cpu/common.c  Yinghai Lu             2008-09-04  1853  		barrier();
1ba76586f778be arch/x86/kernel/cpu/common.c  Yinghai Lu             2008-09-04  1854  
659006bf3ae37a arch/x86/kernel/cpu/common.c  Thomas Gleixner        2015-01-15  1855  		x2apic_setup();
1ba76586f778be arch/x86/kernel/cpu/common.c  Yinghai Lu             2008-09-04  1856  	}
1ba76586f778be arch/x86/kernel/cpu/common.c  Yinghai Lu             2008-09-04  1857  
f1f1007644ffc8 arch/x86/kernel/cpu/common.c  Vegard Nossum          2017-02-27  1858  	mmgrab(&init_mm);
e8d8b8bbdd5563 arch/x86/kernel/cpu/common.c  Thomas Gleixner        2019-10-25  1859  	cur->active_mm = &init_mm;
e8d8b8bbdd5563 arch/x86/kernel/cpu/common.c  Thomas Gleixner        2019-10-25  1860  	BUG_ON(cur->mm);
72c0098d92cedb arch/x86/kernel/cpu/common.c  Andy Lutomirski        2017-09-06  1861  	initialize_tlbstate_and_flush();
e8d8b8bbdd5563 arch/x86/kernel/cpu/common.c  Thomas Gleixner        2019-10-25  1862  	enter_lazy_tlb(&init_mm, cur);
1ba76586f778be arch/x86/kernel/cpu/common.c  Yinghai Lu             2008-09-04  1863  
e8d8b8bbdd5563 arch/x86/kernel/cpu/common.c  Thomas Gleixner        2019-10-25  1864  	/* Initialize the TSS. */
e8d8b8bbdd5563 arch/x86/kernel/cpu/common.c  Thomas Gleixner        2019-10-25  1865  	tss_setup_ist(tss);
e8d8b8bbdd5563 arch/x86/kernel/cpu/common.c  Thomas Gleixner        2019-10-25  1866  	tss->x86_tss.io_bitmap_base = IO_BITMAP_OFFSET;
e8d8b8bbdd5563 arch/x86/kernel/cpu/common.c  Thomas Gleixner        2019-10-25  1867  	memset(tss->io_bitmap, 0xff, sizeof(tss->io_bitmap));
72f5e08dbba2d0 arch/x86/kernel/cpu/common.c  Andy Lutomirski        2017-12-04  1868  	set_tss_desc(cpu, &get_cpu_entry_area(cpu)->tss.x86_tss);
e8d8b8bbdd5563 arch/x86/kernel/cpu/common.c  Thomas Gleixner        2019-10-25  1869  
1ba76586f778be arch/x86/kernel/cpu/common.c  Yinghai Lu             2008-09-04  1870  	load_TR_desc();
e8d8b8bbdd5563 arch/x86/kernel/cpu/common.c  Thomas Gleixner        2019-10-25  1871  	/*
e8d8b8bbdd5563 arch/x86/kernel/cpu/common.c  Thomas Gleixner        2019-10-25  1872  	 * sp0 points to the entry trampoline stack regardless of what task
e8d8b8bbdd5563 arch/x86/kernel/cpu/common.c  Thomas Gleixner        2019-10-25  1873  	 * is running.
e8d8b8bbdd5563 arch/x86/kernel/cpu/common.c  Thomas Gleixner        2019-10-25  1874  	 */
4fe2d8b11a370a arch/x86/kernel/cpu/common.c  Dave Hansen            2017-12-04  1875  	load_sp0((unsigned long)(cpu_entry_stack(cpu) + 1));
20bb83443ea790 arch/x86/kernel/cpu/common.c  Andy Lutomirski        2017-11-02  1876  
37868fe113ff2b arch/x86/kernel/cpu/common.c  Andy Lutomirski        2015-07-30  1877  	load_mm_ldt(&init_mm);
1ba76586f778be arch/x86/kernel/cpu/common.c  Yinghai Lu             2008-09-04  1878  
9766cdbcb26038 arch/x86/kernel/cpu/common.c  Jaswinder Singh Rajput 2009-03-14  1879  	clear_all_debug_regs();
0bb9fef9134cf4 arch/x86/kernel/cpu/common.c  Jason Wessel           2010-05-20  1880  	dbg_restore_debug_regs();
1ba76586f778be arch/x86/kernel/cpu/common.c  Yinghai Lu             2008-09-04  1881  
e8d8b8bbdd5563 arch/x86/kernel/cpu/common.c  Thomas Gleixner        2019-10-25  1882  	gdt_setup_doublefault_tss(cpu);
e8d8b8bbdd5563 arch/x86/kernel/cpu/common.c  Thomas Gleixner        2019-10-25  1883  
21c4cd108a1b14 arch/x86/kernel/cpu/common.c  Ingo Molnar            2015-04-26  1884  	fpu__init_cpu();
1ba76586f778be arch/x86/kernel/cpu/common.c  Yinghai Lu             2008-09-04  1885  
1ba76586f778be arch/x86/kernel/cpu/common.c  Yinghai Lu             2008-09-04 @1886  	if (is_uv_system())
1ba76586f778be arch/x86/kernel/cpu/common.c  Yinghai Lu             2008-09-04 @1887  		uv_cpu_init();
69218e47994da6 arch/x86/kernel/cpu/common.c  Thomas Garnier         2017-03-14  1888  
69218e47994da6 arch/x86/kernel/cpu/common.c  Thomas Garnier         2017-03-14  1889  	load_fixmap_gdt(cpu);
1ba76586f778be arch/x86/kernel/cpu/common.c  Yinghai Lu             2008-09-04  1890  }
1ba76586f778be arch/x86/kernel/cpu/common.c  Yinghai Lu             2008-09-04  1891  

:::::: The code at line 1886 was first introduced by commit
:::::: 1ba76586f778be327e452180d8378e40ee70f066 x86: cpu/common*.c have same cpu_init(), with copying and #ifdef

:::::: TO: Yinghai Lu <yhlu.kernel@gmail.com>
:::::: CC: Ingo Molnar <mingo@elte.hu>

---
0-DAY kernel test infrastructure                 Open Source Technology Center
https://lists.01.org/hyperkitty/list/kbuild-all(a)lists.01.org Intel Corporation

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2019-11-07 10:35 [peterz-queue:WIP.x86/iopl 3/9] arch/x86/kernel/cpu/common.c:1886:6: error: implicit declaration of function 'is_uv_system' kbuild test robot

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