From: Nick Desaulniers Date: Tue, 8 Aug 2023 16:35:00 +0000 (-0700) Subject: riscv: mm: fix 2 instances of -Wmissing-variable-declarations X-Git-Tag: v6.6.7~2147^2~10 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=d2402048bc8a206a56fde4bc41dd01336c7b5a21;p=platform%2Fkernel%2Flinux-starfive.git riscv: mm: fix 2 instances of -Wmissing-variable-declarations I'm looking to enable -Wmissing-variable-declarations behind W=1. 0day bot spotted the following instance in ARCH=riscv builds: arch/riscv/mm/init.c:276:7: warning: no previous extern declaration for non-static variable 'trampoline_pg_dir' [-Wmissing-variable-declarations] 276 | pgd_t trampoline_pg_dir[PTRS_PER_PGD] __page_aligned_bss; | ^ arch/riscv/mm/init.c:276:1: note: declare 'static' if the variable is not intended to be used outside of this translation unit 276 | pgd_t trampoline_pg_dir[PTRS_PER_PGD] __page_aligned_bss; | ^ arch/riscv/mm/init.c:279:7: warning: no previous extern declaration for non-static variable 'early_pg_dir' [-Wmissing-variable-declarations] 279 | pgd_t early_pg_dir[PTRS_PER_PGD] __initdata __aligned(PAGE_SIZE); | ^ arch/riscv/mm/init.c:279:1: note: declare 'static' if the variable is not intended to be used outside of this translation unit 279 | pgd_t early_pg_dir[PTRS_PER_PGD] __initdata __aligned(PAGE_SIZE); | ^ These symbols are referenced by more than one translation unit, so make sure they're both declared and include the correct header for their declarations. Finally, sort the list of includes to help keep them tidy. Reported-by: kernel test robot Closes: https://lore.kernel.org/llvm/202308081000.tTL1ElTr-lkp@intel.com/ Signed-off-by: Nick Desaulniers Link: https://lore.kernel.org/r/20230808-riscv_static-v2-1-2a1e2d2c7a4f@google.com Cc: stable@vger.kernel.org Signed-off-by: Palmer Dabbelt --- diff --git a/arch/riscv/include/asm/pgtable.h b/arch/riscv/include/asm/pgtable.h index 75970ee..b5680c9 100644 --- a/arch/riscv/include/asm/pgtable.h +++ b/arch/riscv/include/asm/pgtable.h @@ -188,6 +188,8 @@ extern struct pt_alloc_ops pt_ops __initdata; #define PAGE_KERNEL_IO __pgprot(_PAGE_IOREMAP) extern pgd_t swapper_pg_dir[]; +extern pgd_t trampoline_pg_dir[]; +extern pgd_t early_pg_dir[]; #ifdef CONFIG_TRANSPARENT_HUGEPAGE static inline int pmd_present(pmd_t pmd) diff --git a/arch/riscv/mm/init.c b/arch/riscv/mm/init.c index ad845c3..e4c35ac2 100644 --- a/arch/riscv/mm/init.c +++ b/arch/riscv/mm/init.c @@ -26,12 +26,13 @@ #include #include -#include -#include -#include #include -#include #include +#include +#include +#include +#include +#include #include "../kernel/head.h" diff --git a/arch/riscv/mm/kasan_init.c b/arch/riscv/mm/kasan_init.c index 8fc0efc..a01bc15 100644 --- a/arch/riscv/mm/kasan_init.c +++ b/arch/riscv/mm/kasan_init.c @@ -22,7 +22,6 @@ * region is not and then we have to go down to the PUD level. */ -extern pgd_t early_pg_dir[PTRS_PER_PGD]; pgd_t tmp_pg_dir[PTRS_PER_PGD] __page_aligned_bss; p4d_t tmp_p4d[PTRS_PER_P4D] __page_aligned_bss; pud_t tmp_pud[PTRS_PER_PUD] __page_aligned_bss;