tree: https://kernel.googlesource.com/pub/scm/linux/kernel/git/paulmck/linux-rcu.git dev.2019.07.31a head: 71cf692f482ff45802352cf85a8880035fca9e52 commit: ca9c8c15d1dbfadb846a267e0bb88f1e2aee882a [56/123] idle: Prevent late-arriving interrupts from disrupting offline config: x86_64-randconfig-e002-201931 (attached as .config) compiler: gcc-7 (Debian 7.4.0-10) 7.4.0 reproduce: git checkout ca9c8c15d1dbfadb846a267e0bb88f1e2aee882a # save the attached .config to linux build tree make ARCH=x86_64
If you fix the issue, kindly add following tag
Reported-by: kbuild test robot <l...@intel.com>
All errors (new ones prefixed by >>):
arch/x86//xen/smp_pv.c: In function 'xen_pv_play_dead':
>> arch/x86//xen/smp_pv.c:437:2: error: implicit declaration of function
>> 'tick_nohz_idle_stop_tick_protected'; did you mean
>> 'tick_nohz_idle_stop_tick'? [-Werror=implicit-function-declaration]
tick_nohz_idle_stop_tick_protected();
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
tick_nohz_idle_stop_tick
cc1: some warnings being treated as errors
vim +437 arch/x86//xen/smp_pv.c
83b96794e0ea97 Vitaly Kuznetsov 2017-03-14 424
8cb6de390096b2 Vitaly Kuznetsov 2017-03-14 425 static void
xen_pv_play_dead(void) /* used only with HOTPLUG_CPU */
83b96794e0ea97 Vitaly Kuznetsov 2017-03-14 426 {
83b96794e0ea97 Vitaly Kuznetsov 2017-03-14 427 play_dead_common();
83b96794e0ea97 Vitaly Kuznetsov 2017-03-14 428
HYPERVISOR_vcpu_op(VCPUOP_down, xen_vcpu_nr(smp_processor_id()), NULL);
83b96794e0ea97 Vitaly Kuznetsov 2017-03-14 429 cpu_bringup();
83b96794e0ea97 Vitaly Kuznetsov 2017-03-14 430 /*
83b96794e0ea97 Vitaly Kuznetsov 2017-03-14 431 * commit 4b0c0f294
(tick: Cleanup NOHZ per cpu data on cpu down)
83b96794e0ea97 Vitaly Kuznetsov 2017-03-14 432 * clears certain data
that the cpu_idle loop (which called us
83b96794e0ea97 Vitaly Kuznetsov 2017-03-14 433 * and that we return
from) expects. The only way to get that
83b96794e0ea97 Vitaly Kuznetsov 2017-03-14 434 * data back is to call:
83b96794e0ea97 Vitaly Kuznetsov 2017-03-14 435 */
83b96794e0ea97 Vitaly Kuznetsov 2017-03-14 436 tick_nohz_idle_enter();
0e7767687fdabf Rafael J. Wysocki 2018-04-05 @437
tick_nohz_idle_stop_tick_protected();
83b96794e0ea97 Vitaly Kuznetsov 2017-03-14 438
c185ddec54657c Juergen Gross 2017-07-05 439
cpuhp_online_idle(CPUHP_AP_ONLINE_IDLE);
83b96794e0ea97 Vitaly Kuznetsov 2017-03-14 440 }
83b96794e0ea97 Vitaly Kuznetsov 2017-03-14 441
:::::: The code at line 437 was first introduced by commit
:::::: 0e7767687fdabfc58d5046e7488632bf2ecd4d0c time: tick-sched: Reorganize
idle tick management code
:::::: TO: Rafael J. Wysocki <rafael.j.wyso...@intel.com>
:::::: CC: Rafael J. Wysocki <rafael.j.wyso...@intel.com>
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.config.gz
Description: application/gzip
