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Message-ID: <20231222111649.7802e7d7@canb.auug.org.au>
Date: Fri, 22 Dec 2023 11:16:49 +1100
From: Stephen Rothwell <sfr@...b.auug.org.au>
To: Andrew Morton <akpm@...ux-foundation.org>
Cc: Arnd Bergmann <arnd@...db.de>, Linux Kernel Mailing List
<linux-kernel@...r.kernel.org>, Linux Next Mailing List
<linux-next@...r.kernel.org>
Subject: Re: linux-next: build failure after merge of the mm tree
Hi all,
On Mon, 27 Nov 2023 14:44:18 +1100 Stephen Rothwell <sfr@...b.auug.org.au> wrote:
>
> After merging the mm tree, today's linux-next build (sparc64 defconfig)
> failed like this:
>
> arch/sparc/vdso/vclock_gettime.c:254:1: warning: no previous prototype for '__vdso_clock_gettime' [-Wmissing-prototypes]
> 254 | __vdso_clock_gettime(clockid_t clock, struct __kernel_old_timespec *ts)
> | ^~~~~~~~~~~~~~~~~~~~
> arch/sparc/vdso/vclock_gettime.c:282:1: warning: no previous prototype for '__vdso_clock_gettime_stick' [-Wmissing-prototypes]
> 282 | __vdso_clock_gettime_stick(clockid_t clock, struct __kernel_old_timespec *ts)
> | ^~~~~~~~~~~~~~~~~~~~~~~~~~
> arch/sparc/vdso/vclock_gettime.c:307:1: warning: no previous prototype for '__vdso_gettimeofday' [-Wmissing-prototypes]
> 307 | __vdso_gettimeofday(struct __kernel_old_timeval *tv, struct timezone *tz)
> | ^~~~~~~~~~~~~~~~~~~
> arch/sparc/vdso/vclock_gettime.c:343:1: warning: no previous prototype for '__vdso_gettimeofday_stick' [-Wmissing-prototypes]
> 343 | __vdso_gettimeofday_stick(struct __kernel_old_timeval *tv, struct timezone *tz)
> | ^~~~~~~~~~~~~~~~~~~~~~~~~
> arch/sparc/vdso/vma.c:246:12: warning: no previous prototype for 'init_vdso_image' [-Wmissing-prototypes]
> 246 | int __init init_vdso_image(const struct vdso_image *image,
> | ^~~~~~~~~~~~~~~
> arch/sparc/prom/p1275.c:52:6: warning: no previous prototype for 'prom_cif_init' [-Wmissing-prototypes]
> 52 | void prom_cif_init(void *cif_handler, void *cif_stack)
> | ^~~~~~~~~~~~~
> In file included from arch/sparc/vdso/vdso32/vclock_gettime.c:22:
> arch/sparc/vdso/vdso32/../vclock_gettime.c:254:1: warning: no previous prototype for '__vdso_clock_gettime' [-Wmissing-prototypes]
> 254 | __vdso_clock_gettime(clockid_t clock, struct __kernel_old_timespec *ts)
> | ^~~~~~~~~~~~~~~~~~~~
> arch/sparc/vdso/vdso32/../vclock_gettime.c:282:1: warning: no previous prototype for '__vdso_clock_gettime_stick' [-Wmissing-prototypes]
> 282 | __vdso_clock_gettime_stick(clockid_t clock, struct __kernel_old_timespec *ts)
> | ^~~~~~~~~~~~~~~~~~~~~~~~~~
> arch/sparc/vdso/vdso32/../vclock_gettime.c:307:1: warning: no previous prototype for '__vdso_gettimeofday' [-Wmissing-prototypes]
> 307 | __vdso_gettimeofday(struct __kernel_old_timeval *tv, struct timezone *tz)
> | ^~~~~~~~~~~~~~~~~~~
> arch/sparc/vdso/vdso32/../vclock_gettime.c:343:1: warning: no previous prototype for '__vdso_gettimeofday_stick' [-Wmissing-prototypes]
> 343 | __vdso_gettimeofday_stick(struct __kernel_old_timeval *tv, struct timezone *tz)
> | ^~~~~~~~~~~~~~~~~~~~~~~~~
> arch/sparc/prom/misc_64.c:165:5: warning: no previous prototype for 'prom_get_mmu_ihandle' [-Wmissing-prototypes]
> 165 | int prom_get_mmu_ihandle(void)
> | ^~~~~~~~~~~~~~~~~~~~
> arch/sparc/kernel/traps_64.c:253:6: error: no previous prototype for 'is_no_fault_exception' [-Werror=missing-prototypes]
> 253 | bool is_no_fault_exception(struct pt_regs *regs)
> | ^~~~~~~~~~~~~~~~~~~~~
> arch/sparc/kernel/traps_64.c:2035:6: error: no previous prototype for 'do_mcd_err' [-Werror=missing-prototypes]
> 2035 | void do_mcd_err(struct pt_regs *regs, struct sun4v_error_entry ent)
> | ^~~~~~~~~~
> arch/sparc/kernel/traps_64.c:2153:6: error: no previous prototype for 'sun4v_nonresum_error_user_handled' [-Werror=missing-prototypes]
> 2153 | bool sun4v_nonresum_error_user_handled(struct pt_regs *regs,
> | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> cc1: all warnings being treated as errors
> arch/sparc/mm/init_64.c:2644:6: error: no previous prototype for 'vmemmap_free' [-Werror=missing-prototypes]
> 2644 | void vmemmap_free(unsigned long start, unsigned long end,
> | ^~~~~~~~~~~~
> cc1: all warnings being treated as errors
>
> Caused by commit
>
> c6345dfa6e3e ("Makefile.extrawarn: turn on missing-prototypes globally")
>
> I applied the following hack for today.
>
> From: Stephen Rothwell <sfr@...b.auug.org.au>
> Date: Mon, 27 Nov 2023 14:18:45 +1100
> Subject: [PATCH] sparc: turn off Werror for now
>
> ---
> arch/sparc/kernel/Makefile | 2 +-
> arch/sparc/mm/Makefile | 2 +-
> 2 files changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/arch/sparc/kernel/Makefile b/arch/sparc/kernel/Makefile
> index 0984bb6f0f17..1ce4d5028c86 100644
> --- a/arch/sparc/kernel/Makefile
> +++ b/arch/sparc/kernel/Makefile
> @@ -5,7 +5,7 @@
> #
>
> asflags-y := -ansi
> -ccflags-y := -Werror
> +#ccflags-y := -Werror
>
> # Undefine sparc when processing vmlinux.lds - it is used
> # And teach CPP we are doing $(BITS) builds (for this case)
> diff --git a/arch/sparc/mm/Makefile b/arch/sparc/mm/Makefile
> index 871354aa3c00..a199484e131f 100644
> --- a/arch/sparc/mm/Makefile
> +++ b/arch/sparc/mm/Makefile
> @@ -3,7 +3,7 @@
> #
>
> asflags-y := -ansi
> -ccflags-y := -Werror
> +#ccflags-y := -Werror
>
> obj-$(CONFIG_SPARC64) += ultra.o tlb.o tsb.o
> obj-y += fault_$(BITS).o
> --
> 2.40.1
>
> After which I got these as well:
>
> arch/sparc/kernel/adi_64.c:124:21: warning: no previous prototype for 'find_tag_store' [-Wmissing-prototypes]
> 124 | tag_storage_desc_t *find_tag_store(struct mm_struct *mm,
> | ^~~~~~~~~~~~~~
> arch/sparc/kernel/adi_64.c:156:21: warning: no previous prototype for 'alloc_tag_store' [-Wmissing-prototypes]
> 156 | tag_storage_desc_t *alloc_tag_store(struct mm_struct *mm,
> | ^~~~~~~~~~~~~~~
> arch/sparc/kernel/adi_64.c:299:6: warning: no previous prototype for 'del_tag_store' [-Wmissing-prototypes]
> 299 | void del_tag_store(tag_storage_desc_t *tag_desc, struct mm_struct *mm)
> | ^~~~~~~~~~~~~
> arch/sparc/kernel/uprobes.c:237:17: warning: no previous prototype for 'uprobe_trap' [-Wmissing-prototypes]
> 237 | asmlinkage void uprobe_trap(struct pt_regs *regs,
> | ^~~~~~~~~~~
> arch/sparc/kernel/time_64.c:880:20: warning: no previous prototype for 'sched_clock' [-Wmissing-prototypes]
> 880 | unsigned long long sched_clock(void)
> | ^~~~~~~~~~~
> arch/sparc/kernel/pci_sun4v.c:259:15: warning: no previous prototype for 'dma_4v_iotsb_bind' [-Wmissing-prototypes]
> 259 | unsigned long dma_4v_iotsb_bind(unsigned long devhandle,
> | ^~~~~~~~~~~~~~~~~
> arch/sparc/kernel/setup_64.c:602:13: warning: no previous prototype for 'alloc_irqstack_bootmem' [-Wmissing-prototypes]
> 602 | void __init alloc_irqstack_bootmem(void)
> | ^~~~~~~~~~~~~~~~~~~~~~
>
> And these from the sparc (32) defconfig build:
>
> arch/sparc/lib/cmpdi2.c:6:11: error: no previous prototype for '__cmpdi2' [-Werror=missing-prototypes]
> 6 | word_type __cmpdi2(long long a, long long b)
> | ^~~~~~~~
> cc1: all warnings being treated as errors
> kernel/dma.c:70:5: warning: no previous prototype for 'request_dma' [-Wmissing-prototypes]
> 70 | int request_dma(unsigned int dmanr, const char * device_id)
> | ^~~~~~~~~~~
> kernel/dma.c:88:6: warning: no previous prototype for 'free_dma' [-Wmissing-prototypes]
> 88 | void free_dma(unsigned int dmanr)
> | ^~~~~~~~
>
> So I turned off -Werrror in the lib directory as well which added this:
>
> arch/sparc/lib/ucmpdi2.c:5:11: warning: no previous prototype for '__ucmpdi2' [-Wmissing-prototypes]
> 5 | word_type __ucmpdi2(unsigned long long a, unsigned long long b)
> | ^~~~~~~~~
Is anything being done about the above warnings?
--
Cheers,
Stephen Rothwell
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