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Date: Thu, 1 Mar 2018 00:31:42 +0100 (CET)
From: Thomas Gleixner <tglx@...utronix.de>
To: kbuild test robot <fengguang.wu@...el.com>
cc: Dou Liyang <douly.fnst@...fujitsu.com>, kbuild-all@...org,
linux-kernel@...r.kernel.org, tipbuild@...or.com,
Andy Shevchenko <andy.shevchenko@...il.com>
Subject: Re: [tip:x86/apic 1/2] arch/x86/kernel/apic/apic.c:1507:2: error:
'i' undeclared
Dou,
can you please look into that? I zapped the commits from x86/apic for now.
Thanks,
tglx
On Thu, 1 Mar 2018, kbuild test robot wrote:
> tree: https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git x86/apic
> head: ea5dfef5a890c9e6e47bdddfc23c4a4ba0c1bea1
> commit: 2066f4d67e7d9cbe44e451d782cdcc0a0d12e5d3 [1/2] x86/apic: Move pending intr check code into it's own function
> config: i386-randconfig-x004-201808 (attached as .config)
> compiler: gcc-7 (Debian 7.3.0-1) 7.3.0
> reproduce:
> git checkout 2066f4d67e7d9cbe44e451d782cdcc0a0d12e5d3
> # save the attached .config to linux build tree
> make ARCH=i386
>
> All errors (new ones prefixed by >>):
>
> arch/x86/kernel/apic/apic.c: In function 'setup_local_APIC':
> >> arch/x86/kernel/apic/apic.c:1507:2: error: 'i' undeclared (first use in this function)
> i = early_per_cpu(x86_cpu_to_logical_apicid, cpu);
> ^
> arch/x86/kernel/apic/apic.c:1507:2: note: each undeclared identifier is reported only once for each function it appears in
>
> vim +/i +1507 arch/x86/kernel/apic/apic.c
>
> 2066f4d6 arch/x86/kernel/apic/apic.c Dou Liyang 2018-02-26 1460
> 0e078e2f arch/x86/kernel/apic_64.c Thomas Gleixner 2008-01-30 1461 /**
> 0e078e2f arch/x86/kernel/apic_64.c Thomas Gleixner 2008-01-30 1462 * setup_local_APIC - setup the local APIC
> 0aa002fe arch/x86/kernel/apic/apic.c Tejun Heo 2010-12-09 1463 *
> 543113d2 arch/x86/kernel/apic/apic.c Dou Liyang 2017-02-07 1464 * Used to setup local APIC while initializing BSP or bringing up APs.
> 0aa002fe arch/x86/kernel/apic/apic.c Tejun Heo 2010-12-09 1465 * Always called with preemption disabled.
> 0e078e2f arch/x86/kernel/apic_64.c Thomas Gleixner 2008-01-30 1466 */
> b753a2b7 arch/x86/kernel/apic/apic.c Dou Liyang 2018-02-14 1467 static void setup_local_APIC(void)
> ^1da177e arch/x86_64/kernel/apic.c Linus Torvalds 2005-04-16 1468 {
> 0aa002fe arch/x86/kernel/apic/apic.c Tejun Heo 2010-12-09 1469 int cpu = smp_processor_id();
> 2066f4d6 arch/x86/kernel/apic/apic.c Dou Liyang 2018-02-26 1470 unsigned int value;
> ^1da177e arch/x86_64/kernel/apic.c Linus Torvalds 2005-04-16 1471
> f1182638 arch/x86/kernel/apic.c Jan Beulich 2009-01-14 1472 if (disable_apic) {
> 7167d08e arch/x86/kernel/apic/apic.c Henrik Kretzschmar 2011-02-22 1473 disable_ioapic_support();
> f1182638 arch/x86/kernel/apic.c Jan Beulich 2009-01-14 1474 return;
> f1182638 arch/x86/kernel/apic.c Jan Beulich 2009-01-14 1475 }
> f1182638 arch/x86/kernel/apic.c Jan Beulich 2009-01-14 1476
> 89c38c28 arch/x86/kernel/apic_64.c Cyrill Gorcunov 2008-08-24 1477 #ifdef CONFIG_X86_32
> 89c38c28 arch/x86/kernel/apic_64.c Cyrill Gorcunov 2008-08-24 1478 /* Pound the ESR really hard over the head with a big hammer - mbligh */
> 08125d3e arch/x86/kernel/apic.c Ingo Molnar 2009-01-28 1479 if (lapic_is_integrated() && apic->disable_esr) {
> 89c38c28 arch/x86/kernel/apic_64.c Cyrill Gorcunov 2008-08-24 1480 apic_write(APIC_ESR, 0);
> 89c38c28 arch/x86/kernel/apic_64.c Cyrill Gorcunov 2008-08-24 1481 apic_write(APIC_ESR, 0);
> 89c38c28 arch/x86/kernel/apic_64.c Cyrill Gorcunov 2008-08-24 1482 apic_write(APIC_ESR, 0);
> 89c38c28 arch/x86/kernel/apic_64.c Cyrill Gorcunov 2008-08-24 1483 apic_write(APIC_ESR, 0);
> 89c38c28 arch/x86/kernel/apic_64.c Cyrill Gorcunov 2008-08-24 1484 }
> 89c38c28 arch/x86/kernel/apic_64.c Cyrill Gorcunov 2008-08-24 1485 #endif
> cdd6c482 arch/x86/kernel/apic/apic.c Ingo Molnar 2009-09-21 1486 perf_events_lapic_init();
> 89c38c28 arch/x86/kernel/apic_64.c Cyrill Gorcunov 2008-08-24 1487
> ^1da177e arch/x86_64/kernel/apic.c Linus Torvalds 2005-04-16 1488 /*
> ^1da177e arch/x86_64/kernel/apic.c Linus Torvalds 2005-04-16 1489 * Double-check whether this APIC is really registered.
> ^1da177e arch/x86_64/kernel/apic.c Linus Torvalds 2005-04-16 1490 * This is meaningless in clustered apic mode, so we skip it.
> ^1da177e arch/x86_64/kernel/apic.c Linus Torvalds 2005-04-16 1491 */
> c2777f98 arch/x86/kernel/apic/apic.c Daniel Walker 2009-09-12 1492 BUG_ON(!apic->apic_id_registered());
> ^1da177e arch/x86_64/kernel/apic.c Linus Torvalds 2005-04-16 1493
> ^1da177e arch/x86_64/kernel/apic.c Linus Torvalds 2005-04-16 1494 /*
> ^1da177e arch/x86_64/kernel/apic.c Linus Torvalds 2005-04-16 1495 * Intel recommends to set DFR, LDR and TPR before enabling
> ^1da177e arch/x86_64/kernel/apic.c Linus Torvalds 2005-04-16 1496 * an APIC. See e.g. "AP-388 82489DX User's Manual" (Intel
> ^1da177e arch/x86_64/kernel/apic.c Linus Torvalds 2005-04-16 1497 * document number 292116). So here it goes...
> ^1da177e arch/x86_64/kernel/apic.c Linus Torvalds 2005-04-16 1498 */
> a5c43296 arch/x86/kernel/apic.c Ingo Molnar 2009-01-28 1499 apic->init_apic_ldr();
> ^1da177e arch/x86_64/kernel/apic.c Linus Torvalds 2005-04-16 1500
> 6f802c4b arch/x86/kernel/apic/apic.c Tejun Heo 2011-01-23 1501 #ifdef CONFIG_X86_32
> 6f802c4b arch/x86/kernel/apic/apic.c Tejun Heo 2011-01-23 1502 /*
> acb8bc09 arch/x86/kernel/apic/apic.c Tejun Heo 2011-01-23 1503 * APIC LDR is initialized. If logical_apicid mapping was
> acb8bc09 arch/x86/kernel/apic/apic.c Tejun Heo 2011-01-23 1504 * initialized during get_smp_config(), make sure it matches the
> acb8bc09 arch/x86/kernel/apic/apic.c Tejun Heo 2011-01-23 1505 * actual value.
> 6f802c4b arch/x86/kernel/apic/apic.c Tejun Heo 2011-01-23 1506 */
> acb8bc09 arch/x86/kernel/apic/apic.c Tejun Heo 2011-01-23 @1507 i = early_per_cpu(x86_cpu_to_logical_apicid, cpu);
> acb8bc09 arch/x86/kernel/apic/apic.c Tejun Heo 2011-01-23 1508 WARN_ON(i != BAD_APICID && i != logical_smp_processor_id());
> acb8bc09 arch/x86/kernel/apic/apic.c Tejun Heo 2011-01-23 1509 /* always use the value from LDR */
> 6f802c4b arch/x86/kernel/apic/apic.c Tejun Heo 2011-01-23 1510 early_per_cpu(x86_cpu_to_logical_apicid, cpu) =
> 6f802c4b arch/x86/kernel/apic/apic.c Tejun Heo 2011-01-23 1511 logical_smp_processor_id();
> 6f802c4b arch/x86/kernel/apic/apic.c Tejun Heo 2011-01-23 1512 #endif
> 6f802c4b arch/x86/kernel/apic/apic.c Tejun Heo 2011-01-23 1513
> ^1da177e arch/x86_64/kernel/apic.c Linus Torvalds 2005-04-16 1514 /*
> ^1da177e arch/x86_64/kernel/apic.c Linus Torvalds 2005-04-16 1515 * Set Task Priority to 'accept all'. We never change this
> ^1da177e arch/x86_64/kernel/apic.c Linus Torvalds 2005-04-16 1516 * later on.
> ^1da177e arch/x86_64/kernel/apic.c Linus Torvalds 2005-04-16 1517 */
> ^1da177e arch/x86_64/kernel/apic.c Linus Torvalds 2005-04-16 1518 value = apic_read(APIC_TASKPRI);
> ^1da177e arch/x86_64/kernel/apic.c Linus Torvalds 2005-04-16 1519 value &= ~APIC_TPRI_MASK;
> 11a8e778 arch/x86_64/kernel/apic.c Andi Kleen 2006-01-11 1520 apic_write(APIC_TASKPRI, value);
> ^1da177e arch/x86_64/kernel/apic.c Linus Torvalds 2005-04-16 1521
> 2066f4d6 arch/x86/kernel/apic/apic.c Dou Liyang 2018-02-26 1522 apic_pending_intr_clear();
> da7ed9f9 arch/x86_64/kernel/apic.c Vivek Goyal 2006-03-25 1523
> da7ed9f9 arch/x86_64/kernel/apic.c Vivek Goyal 2006-03-25 1524 /*
> ^1da177e arch/x86_64/kernel/apic.c Linus Torvalds 2005-04-16 1525 * Now that we are all set up, enable the APIC
> ^1da177e arch/x86_64/kernel/apic.c Linus Torvalds 2005-04-16 1526 */
> ^1da177e arch/x86_64/kernel/apic.c Linus Torvalds 2005-04-16 1527 value = apic_read(APIC_SPIV);
> ^1da177e arch/x86_64/kernel/apic.c Linus Torvalds 2005-04-16 1528 value &= ~APIC_VECTOR_MASK;
> ^1da177e arch/x86_64/kernel/apic.c Linus Torvalds 2005-04-16 1529 /*
> ^1da177e arch/x86_64/kernel/apic.c Linus Torvalds 2005-04-16 1530 * Enable APIC
> ^1da177e arch/x86_64/kernel/apic.c Linus Torvalds 2005-04-16 1531 */
> ^1da177e arch/x86_64/kernel/apic.c Linus Torvalds 2005-04-16 1532 value |= APIC_SPIV_APIC_ENABLED;
> ^1da177e arch/x86_64/kernel/apic.c Linus Torvalds 2005-04-16 1533
>
> :::::: The code at line 1507 was first introduced by commit
> :::::: acb8bc09c6185e4d3d582d0076aaa6a89f19d8c5 x86: Add apic->x86_32_early_logical_apicid()
>
> :::::: TO: Tejun Heo <tj@...nel.org>
> :::::: CC: Ingo Molnar <mingo@...e.hu>
>
> ---
> 0-DAY kernel test infrastructure Open Source Technology Center
> https://lists.01.org/pipermail/kbuild-all Intel Corporation
>
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