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SubjectRe: x86/mshyperv: Remove unneeded includes from mshyperv.h
Hi Thomas,

[auto build test ERROR on tip/auto-latest]
[also build test ERROR on v4.12-rc6 next-20170623]
[cannot apply to tip/x86/core]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]

url: https://github.com/0day-ci/linux/commits/Thomas-Gleixner/x86-mshyperv-Remove-unneeded-includes-from-mshyperv-h/20170624-121055
config: i386-randconfig-b0-06241558 (attached as .config)
compiler: gcc-5 (Debian 5.4.1-2) 5.4.1 20160904
reproduce:
# save the attached .config to linux build tree
make ARCH=i386

All errors (new ones prefixed by >>):

In file included from arch/x86/hyperv/hv_init.c:23:0:
arch/x86/include/asm/mshyperv.h: In function 'vmbus_signal_eom':
>> arch/x86/include/asm/mshyperv.h:115:6: error: implicit declaration of function 'cmpxchg' [-Werror=implicit-function-declaration]
if (cmpxchg(&msg->header.message_type, old_msg_type,
^
Cyclomatic Complexity 1 arch/x86/include/asm/mshyperv.h:generate_guest_id
Cyclomatic Complexity 1 arch/x86/include/asm/paravirt.h:paravirt_read_msr
Cyclomatic Complexity 1 arch/x86/hyperv/hv_init.c:read_hv_clock_msr
Cyclomatic Complexity 1 arch/x86/include/asm/paravirt.h:paravirt_write_msr
Cyclomatic Complexity 1 arch/x86/include/asm/paravirt.h:wrmsrl
Cyclomatic Complexity 1 include/linux/clocksource.h:clocksource_register_hz
Cyclomatic Complexity 1 arch/x86/include/asm/io.h:virt_to_phys
Cyclomatic Complexity 4 arch/x86/hyperv/hv_init.c:hyperv_init
Cyclomatic Complexity 1 arch/x86/hyperv/hv_init.c:hyperv_cleanup
Cyclomatic Complexity 4 arch/x86/hyperv/hv_init.c:hv_do_hypercall
Cyclomatic Complexity 2 arch/x86/hyperv/hv_init.c:hyperv_report_panic
Cyclomatic Complexity 2 arch/x86/hyperv/hv_init.c:hv_is_hypercall_page_setup
cc1: some warnings being treated as errors
--
In file included from arch/x86//hyperv/hv_init.c:23:0:
arch/x86/include/asm/mshyperv.h: In function 'vmbus_signal_eom':
>> arch/x86/include/asm/mshyperv.h:115:6: error: implicit declaration of function 'cmpxchg' [-Werror=implicit-function-declaration]
if (cmpxchg(&msg->header.message_type, old_msg_type,
^
Cyclomatic Complexity 1 arch/x86/include/asm/mshyperv.h:generate_guest_id
Cyclomatic Complexity 1 arch/x86/include/asm/paravirt.h:paravirt_read_msr
Cyclomatic Complexity 1 arch/x86//hyperv/hv_init.c:read_hv_clock_msr
Cyclomatic Complexity 1 arch/x86/include/asm/paravirt.h:paravirt_write_msr
Cyclomatic Complexity 1 arch/x86/include/asm/paravirt.h:wrmsrl
Cyclomatic Complexity 1 include/linux/clocksource.h:clocksource_register_hz
Cyclomatic Complexity 1 arch/x86/include/asm/io.h:virt_to_phys
Cyclomatic Complexity 4 arch/x86//hyperv/hv_init.c:hyperv_init
Cyclomatic Complexity 1 arch/x86//hyperv/hv_init.c:hyperv_cleanup
Cyclomatic Complexity 4 arch/x86//hyperv/hv_init.c:hv_do_hypercall
Cyclomatic Complexity 2 arch/x86//hyperv/hv_init.c:hyperv_report_panic
Cyclomatic Complexity 2 arch/x86//hyperv/hv_init.c:hv_is_hypercall_page_setup
cc1: some warnings being treated as errors

vim +/cmpxchg +115 arch/x86/include/asm/mshyperv.h

e810e48c K. Y. Srinivasan 2017-01-19 109 * In case we blindly write msg->header.message_type we're going
e810e48c K. Y. Srinivasan 2017-01-19 110 * to lose it. We can still lose a message of the same type but
e810e48c K. Y. Srinivasan 2017-01-19 111 * we count on the fact that there can only be one
e810e48c K. Y. Srinivasan 2017-01-19 112 * CHANNELMSG_UNLOAD_RESPONSE and we don't care about other messages
e810e48c K. Y. Srinivasan 2017-01-19 113 * on crash.
e810e48c K. Y. Srinivasan 2017-01-19 114 */
e810e48c K. Y. Srinivasan 2017-01-19 @115 if (cmpxchg(&msg->header.message_type, old_msg_type,
e810e48c K. Y. Srinivasan 2017-01-19 116 HVMSG_NONE) != old_msg_type)
e810e48c K. Y. Srinivasan 2017-01-19 117 return;
e810e48c K. Y. Srinivasan 2017-01-19 118

:::::: The code at line 115 was first introduced by commit
:::::: e810e48c0c9a1a1ebb90cfe966bce6dc80ce08e7 Drivers: hv: vmbus: Move the code to signal end of message

:::::: TO: K. Y. Srinivasan <kys@microsoft.com>
:::::: CC: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
0-DAY kernel test infrastructure Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all Intel Corporation
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