[ammarfaizi2-block:tglx/devel/depthtracking 9/45] arch/x86/include/asm/linkage.h:47:5: warning: "CONFIG_FUNCTION_ALIGNMENT" is not defined, evaluates to 0

From: kernel test robot
Date: Wed Jul 20 2022 - 18:21:14 EST

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tree: https://github.com/ammarfaizi2/linux-block tglx/devel/depthtracking
head: 714d29e3e7e3faac27142424ae2533163ddd3a46
commit: 0f16b390911e1b97d5e93a76427880ebb6a8bed6 [9/45] x86/asm: Ensure function alignment
config: um-i386_defconfig (https://download.01.org/0day-ci/archive/20220721/202207210600.RqM29G9b-lkp@xxxxxxxxx/config)
compiler: gcc-11 (Debian 11.3.0-3) 11.3.0
reproduce (this is a W=1 build):
# https://github.com/ammarfaizi2/linux-block/commit/0f16b390911e1b97d5e93a76427880ebb6a8bed6
git remote add ammarfaizi2-block https://github.com/ammarfaizi2/linux-block
git fetch --no-tags ammarfaizi2-block tglx/devel/depthtracking
git checkout 0f16b390911e1b97d5e93a76427880ebb6a8bed6
# save the config file
mkdir build_dir && cp config build_dir/.config
make W=1 O=build_dir ARCH=um SUBARCH=i386 prepare

If you fix the issue, kindly add following tag where applicable
Reported-by: kernel test robot <lkp@xxxxxxxxx>

All warnings (new ones prefixed by >>):

In file included from include/linux/linkage.h:8,
from include/linux/printk.h:8,
from include/asm-generic/bug.h:22,
from ./arch/um/include/generated/asm/bug.h:1,
from include/linux/bug.h:5,
from include/linux/page-flags.h:10,
from kernel/bounds.c:10:
>> arch/x86/include/asm/linkage.h:47:5: warning: "CONFIG_FUNCTION_ALIGNMENT" is not defined, evaluates to 0 [-Wundef]
47 | #if CONFIG_FUNCTION_ALIGNMENT == 16
| ^~~~~~~~~~~~~~~~~~~~~~~~~
--
In file included from include/linux/linkage.h:8,
from include/linux/printk.h:8,
from include/asm-generic/bug.h:22,
from ./arch/um/include/generated/asm/bug.h:1,
from include/linux/bug.h:5,
from include/linux/thread_info.h:13,
from include/asm-generic/current.h:5,
from ./arch/um/include/generated/asm/current.h:1,
from include/linux/sched.h:12,
from arch/x86/um/shared/sysdep/kernel-offsets.h:3,
from arch/um/kernel/asm-offsets.c:1:
>> arch/x86/include/asm/linkage.h:47:5: warning: "CONFIG_FUNCTION_ALIGNMENT" is not defined, evaluates to 0 [-Wundef]
47 | #if CONFIG_FUNCTION_ALIGNMENT == 16
| ^~~~~~~~~~~~~~~~~~~~~~~~~
In file included from arch/um/kernel/asm-offsets.c:1:
arch/x86/um/shared/sysdep/kernel-offsets.h:9:6: warning: no previous prototype for 'foo' [-Wmissing-prototypes]
9 | void foo(void)
| ^~~
--
In file included from include/linux/linkage.h:8,
from include/linux/kernel.h:17,
from include/linux/cpumask.h:10,
from arch/um/kernel/irq.c:10:
>> arch/x86/include/asm/linkage.h:47:5: warning: "CONFIG_FUNCTION_ALIGNMENT" is not defined, evaluates to 0 [-Wundef]
47 | #if CONFIG_FUNCTION_ALIGNMENT == 16
| ^~~~~~~~~~~~~~~~~~~~~~~~~
arch/um/kernel/irq.c:646:13: warning: no previous prototype for 'init_IRQ' [-Wmissing-prototypes]
646 | void __init init_IRQ(void)
| ^~~~~~~~
--
In file included from include/linux/linkage.h:8,
from include/linux/kernel.h:17,
from include/linux/cpumask.h:10,
from include/linux/mm_types_task.h:14,
from include/linux/mm_types.h:5,
from include/linux/buildid.h:5,
from include/linux/module.h:14,
from arch/um/kernel/mem.c:7:
>> arch/x86/include/asm/linkage.h:47:5: warning: "CONFIG_FUNCTION_ALIGNMENT" is not defined, evaluates to 0 [-Wundef]
47 | #if CONFIG_FUNCTION_ALIGNMENT == 16
| ^~~~~~~~~~~~~~~~~~~~~~~~~
arch/um/kernel/mem.c:183:8: warning: no previous prototype for 'pgd_alloc' [-Wmissing-prototypes]
183 | pgd_t *pgd_alloc(struct mm_struct *mm)
| ^~~~~~~~~
arch/um/kernel/mem.c:196:7: warning: no previous prototype for 'uml_kmalloc' [-Wmissing-prototypes]
196 | void *uml_kmalloc(int size, int flags)
| ^~~~~~~~~~~
--
In file included from include/linux/linkage.h:8,
from include/linux/printk.h:8,
from include/asm-generic/bug.h:22,
from ./arch/um/include/generated/asm/bug.h:1,
from include/linux/bug.h:5,
from include/linux/mmdebug.h:5,
from include/linux/percpu.h:5,
from include/linux/context_tracking_state.h:5,
from include/linux/hardirq.h:5,
from arch/um/kernel/process.c:11:
>> arch/x86/include/asm/linkage.h:47:5: warning: "CONFIG_FUNCTION_ALIGNMENT" is not defined, evaluates to 0 [-Wundef]
47 | #if CONFIG_FUNCTION_ALIGNMENT == 16
| ^~~~~~~~~~~~~~~~~~~~~~~~~
arch/um/kernel/process.c:50:5: warning: no previous prototype for 'pid_to_processor_id' [-Wmissing-prototypes]
50 | int pid_to_processor_id(int pid)
| ^~~~~~~~~~~~~~~~~~~
arch/um/kernel/process.c:86:7: warning: no previous prototype for '__switch_to' [-Wmissing-prototypes]
86 | void *__switch_to(struct task_struct *from, struct task_struct *to)
| ^~~~~~~~~~~
arch/um/kernel/process.c: In function 'new_thread_handler':
arch/um/kernel/process.c:121:28: warning: variable 'n' set but not used [-Wunused-but-set-variable]
121 | int (*fn)(void *), n;
| ^
arch/um/kernel/process.c: At top level:
arch/um/kernel/process.c:139:6: warning: no previous prototype for 'fork_handler' [-Wmissing-prototypes]
139 | void fork_handler(void)
| ^~~~~~~~~~~~
arch/um/kernel/process.c:216:6: warning: no previous prototype for 'arch_cpu_idle' [-Wmissing-prototypes]
216 | void arch_cpu_idle(void)
| ^~~~~~~~~~~~~
arch/um/kernel/process.c:253:5: warning: no previous prototype for 'copy_to_user_proc' [-Wmissing-prototypes]
253 | int copy_to_user_proc(void __user *to, void *from, int size)
| ^~~~~~~~~~~~~~~~~
arch/um/kernel/process.c:263:5: warning: no previous prototype for 'clear_user_proc' [-Wmissing-prototypes]
263 | int clear_user_proc(void __user *buf, int size)
| ^~~~~~~~~~~~~~~
arch/um/kernel/process.c:316:12: warning: no previous prototype for 'make_proc_sysemu' [-Wmissing-prototypes]
316 | int __init make_proc_sysemu(void)
| ^~~~~~~~~~~~~~~~
arch/um/kernel/process.c:356:15: warning: no previous prototype for 'arch_align_stack' [-Wmissing-prototypes]
356 | unsigned long arch_align_stack(unsigned long sp)
| ^~~~~~~~~~~~~~~~
--
In file included from include/linux/linkage.h:8,
from include/linux/preempt.h:10,
from include/linux/rcupdate.h:27,
from include/linux/rculist.h:11,
from include/linux/sched/signal.h:5,
from arch/um/kernel/reboot.c:6:
>> arch/x86/include/asm/linkage.h:47:5: warning: "CONFIG_FUNCTION_ALIGNMENT" is not defined, evaluates to 0 [-Wundef]
47 | #if CONFIG_FUNCTION_ALIGNMENT == 16
| ^~~~~~~~~~~~~~~~~~~~~~~~~
arch/um/kernel/reboot.c:45:6: warning: no previous prototype for 'machine_restart' [-Wmissing-prototypes]
45 | void machine_restart(char * __unused)
| ^~~~~~~~~~~~~~~
arch/um/kernel/reboot.c:51:6: warning: no previous prototype for 'machine_power_off' [-Wmissing-prototypes]
51 | void machine_power_off(void)
| ^~~~~~~~~~~~~~~~~
arch/um/kernel/reboot.c:57:6: warning: no previous prototype for 'machine_halt' [-Wmissing-prototypes]
57 | void machine_halt(void)
| ^~~~~~~~~~~~
--
In file included from include/linux/linkage.h:8,
from include/linux/printk.h:8,
from include/asm-generic/bug.h:22,
from ./arch/um/include/generated/asm/bug.h:1,
from include/linux/ktime.h:26,
from include/linux/timer.h:6,
from include/linux/clocksource.h:17,
from include/linux/clockchips.h:14,
from arch/um/kernel/time.c:10:
>> arch/x86/include/asm/linkage.h:47:5: warning: "CONFIG_FUNCTION_ALIGNMENT" is not defined, evaluates to 0 [-Wundef]
47 | #if CONFIG_FUNCTION_ALIGNMENT == 16
| ^~~~~~~~~~~~~~~~~~~~~~~~~
arch/um/kernel/time.c:778:13: warning: no previous prototype for 'time_init' [-Wmissing-prototypes]
778 | void __init time_init(void)
| ^~~~~~~~~
--
In file included from include/linux/linkage.h:8,
from include/linux/printk.h:8,
from include/asm-generic/bug.h:22,
from ./arch/um/include/generated/asm/bug.h:1,
from include/linux/bug.h:5,
from include/linux/mmdebug.h:5,
from include/linux/mm.h:6,
from arch/um/kernel/tlb.c:6:
>> arch/x86/include/asm/linkage.h:47:5: warning: "CONFIG_FUNCTION_ALIGNMENT" is not defined, evaluates to 0 [-Wundef]
47 | #if CONFIG_FUNCTION_ALIGNMENT == 16
| ^~~~~~~~~~~~~~~~~~~~~~~~~
arch/um/kernel/tlb.c:317:6: warning: no previous prototype for 'fix_range_common' [-Wmissing-prototypes]
317 | void fix_range_common(struct mm_struct *mm, unsigned long start_addr,
| ^~~~~~~~~~~~~~~~
arch/um/kernel/tlb.c:579:6: warning: no previous prototype for 'flush_tlb_mm_range' [-Wmissing-prototypes]
579 | void flush_tlb_mm_range(struct mm_struct *mm, unsigned long start,
| ^~~~~~~~~~~~~~~~~~
arch/um/kernel/tlb.c:595:6: warning: no previous prototype for 'force_flush_all' [-Wmissing-prototypes]
595 | void force_flush_all(void)
| ^~~~~~~~~~~~~~~
--
In file included from include/linux/linkage.h:8,
from include/linux/printk.h:8,
from include/asm-generic/bug.h:22,
from ./arch/um/include/generated/asm/bug.h:1,
from include/linux/bug.h:5,
from include/linux/thread_info.h:13,
from include/asm-generic/current.h:5,
from ./arch/um/include/generated/asm/current.h:1,
from include/linux/sched.h:12,
from include/linux/delay.h:23,
from arch/um/kernel/um_arch.c:6:
>> arch/x86/include/asm/linkage.h:47:5: warning: "CONFIG_FUNCTION_ALIGNMENT" is not defined, evaluates to 0 [-Wundef]
47 | #if CONFIG_FUNCTION_ALIGNMENT == 16
| ^~~~~~~~~~~~~~~~~~~~~~~~~
arch/um/kernel/um_arch.c:402:19: warning: no previous prototype for 'read_initrd' [-Wmissing-prototypes]
402 | int __init __weak read_initrd(void)
| ^~~~~~~~~~~
arch/um/kernel/um_arch.c:421:13: warning: no previous prototype for 'check_bugs' [-Wmissing-prototypes]
421 | void __init check_bugs(void)
| ^~~~~~~~~~
arch/um/kernel/um_arch.c:443:7: warning: no previous prototype for 'text_poke' [-Wmissing-prototypes]
443 | void *text_poke(void *addr, const void *opcode, size_t len)
| ^~~~~~~~~
arch/um/kernel/um_arch.c:455:6: warning: no previous prototype for 'text_poke_sync' [-Wmissing-prototypes]
455 | void text_poke_sync(void)
| ^~~~~~~~~~~~~~
--
In file included from include/linux/linkage.h:8,
from include/linux/preempt.h:10,
from include/linux/spinlock.h:55,
from arch/um/kernel/kmsg_dump.c:3:
>> arch/x86/include/asm/linkage.h:47:5: warning: "CONFIG_FUNCTION_ALIGNMENT" is not defined, evaluates to 0 [-Wundef]
47 | #if CONFIG_FUNCTION_ALIGNMENT == 16
| ^~~~~~~~~~~~~~~~~~~~~~~~~
arch/um/kernel/kmsg_dump.c:54:12: warning: no previous prototype for 'kmsg_dumper_stdout_init' [-Wmissing-prototypes]
54 | int __init kmsg_dumper_stdout_init(void)
| ^~~~~~~~~~~~~~~~~~~~~~~
--
In file included from include/linux/linkage.h:8,
from include/linux/printk.h:8,
from include/asm-generic/bug.h:22,
from ./arch/um/include/generated/asm/bug.h:1,
from include/linux/bug.h:5,
from include/linux/mmdebug.h:5,
from include/linux/mm.h:6,
from arch/um/kernel/skas/mmu.c:7:
>> arch/x86/include/asm/linkage.h:47:5: warning: "CONFIG_FUNCTION_ALIGNMENT" is not defined, evaluates to 0 [-Wundef]
47 | #if CONFIG_FUNCTION_ALIGNMENT == 16
| ^~~~~~~~~~~~~~~~~~~~~~~~~
arch/um/kernel/skas/mmu.c:17:5: warning: no previous prototype for 'init_new_context' [-Wmissing-prototypes]
17 | int init_new_context(struct task_struct *task, struct mm_struct *mm)
| ^~~~~~~~~~~~~~~~
arch/um/kernel/skas/mmu.c:60:6: warning: no previous prototype for 'destroy_context' [-Wmissing-prototypes]
60 | void destroy_context(struct mm_struct *mm)
| ^~~~~~~~~~~~~~~
..

vim +/CONFIG_FUNCTION_ALIGNMENT +47 arch/x86/include/asm/linkage.h

46
> 47 #if CONFIG_FUNCTION_ALIGNMENT == 16
48 # define __FUNC_ALIGN .p2align 4, 0x90;
49 # define ASM_FUNC_ALIGN ".p2align 4, 0x90;"
50 # define SYM_F_ALIGN __FUNC_ALIGN
51 #else
52 # define ASM_FUNC_ALIGN ""
53 # define SYM_F_ALIGN SYM_A_ALIGN
54 #endif
55

--
0-DAY CI Kernel Test Service
https://01.org/lkp

Next message: Rob Herring: "Re: [PATCH 2/2] dt-bindings: PCI: mediatek-gen3: Add new clock name"
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