On Wed, Mar 31, 2021 at 10:00 PM Jisheng Zhang
<jszhang3@xxxxxxxxxxxxxxxx> wrote:
>
> From: Jisheng Zhang <jszhang@xxxxxxxxxx>
>
> They are not needed after booting, so mark them as __init to move them
> to the __init section.
>
> Signed-off-by: Jisheng Zhang <jszhang@xxxxxxxxxx>
> ---
> arch/riscv/kernel/traps.c | 2 +-
> arch/riscv/mm/init.c | 6 +++---
> arch/riscv/mm/kasan_init.c | 6 +++---
> arch/riscv/mm/ptdump.c | 2 +-
> 4 files changed, 8 insertions(+), 8 deletions(-)
>
> diff --git a/arch/riscv/kernel/traps.c b/arch/riscv/kernel/traps.c
> index 1357abf79570..07fdded10c21 100644
> --- a/arch/riscv/kernel/traps.c
> +++ b/arch/riscv/kernel/traps.c
> @@ -197,6 +197,6 @@ int is_valid_bugaddr(unsigned long pc)
> #endif /* CONFIG_GENERIC_BUG */
>
> /* stvec & scratch is already set from head.S */
> -void trap_init(void)
> +void __init trap_init(void)
> {
> }
The trap_init() is unused currently so you can drop this change
and remove trap_init() as a separate patch.
> diff --git a/arch/riscv/mm/init.c b/arch/riscv/mm/init.c
> index 067583ab1bd7..76bf2de8aa59 100644
> --- a/arch/riscv/mm/init.c
> +++ b/arch/riscv/mm/init.c
> @@ -57,7 +57,7 @@ static void __init zone_sizes_init(void)
> free_area_init(max_zone_pfns);
> }
>
> -static void setup_zero_page(void)
> +static void __init setup_zero_page(void)
> {
> memset((void *)empty_zero_page, 0, PAGE_SIZE);
> }
> @@ -75,7 +75,7 @@ static inline void print_mlm(char *name, unsigned long b, unsigned long t)
> (((t) - (b)) >> 20));
> }
>
> -static void print_vm_layout(void)
> +static void __init print_vm_layout(void)
> {
> pr_notice("Virtual kernel memory layout:\n");
> print_mlk("fixmap", (unsigned long)FIXADDR_START,
> @@ -557,7 +557,7 @@ static inline void setup_vm_final(void)
> #endif /* CONFIG_MMU */
>
> #ifdef CONFIG_STRICT_KERNEL_RWX
> -void protect_kernel_text_data(void)
> +void __init protect_kernel_text_data(void)
> {
> unsigned long text_start = (unsigned long)_start;
> unsigned long init_text_start = (unsigned long)__init_text_begin;
> diff --git a/arch/riscv/mm/kasan_init.c b/arch/riscv/mm/kasan_init.c
> index 4f85c6d0ddf8..e1d041ac1534 100644
> --- a/arch/riscv/mm/kasan_init.c
> +++ b/arch/riscv/mm/kasan_init.c
> @@ -60,7 +60,7 @@ asmlinkage void __init kasan_early_init(void)
> local_flush_tlb_all();
> }
>
> -static void kasan_populate_pte(pmd_t *pmd, unsigned long vaddr, unsigned long end)
> +static void __init kasan_populate_pte(pmd_t *pmd, unsigned long vaddr, unsigned long end)
> {
> phys_addr_t phys_addr;
> pte_t *ptep, *base_pte;
> @@ -82,7 +82,7 @@ static void kasan_populate_pte(pmd_t *pmd, unsigned long vaddr, unsigned long en
> set_pmd(pmd, pfn_pmd(PFN_DOWN(__pa(base_pte)), PAGE_TABLE));
> }
>
> -static void kasan_populate_pmd(pgd_t *pgd, unsigned long vaddr, unsigned long end)
> +static void __init kasan_populate_pmd(pgd_t *pgd, unsigned long vaddr, unsigned long end)
> {
> phys_addr_t phys_addr;
> pmd_t *pmdp, *base_pmd;
> @@ -117,7 +117,7 @@ static void kasan_populate_pmd(pgd_t *pgd, unsigned long vaddr, unsigned long en
> set_pgd(pgd, pfn_pgd(PFN_DOWN(__pa(base_pmd)), PAGE_TABLE));
> }
>
> -static void kasan_populate_pgd(unsigned long vaddr, unsigned long end)
> +static void __init kasan_populate_pgd(unsigned long vaddr, unsigned long end)
> {
> phys_addr_t phys_addr;
> pgd_t *pgdp = pgd_offset_k(vaddr);
> diff --git a/arch/riscv/mm/ptdump.c b/arch/riscv/mm/ptdump.c
> index ace74dec7492..3b7b6e4d025e 100644
> --- a/arch/riscv/mm/ptdump.c
> +++ b/arch/riscv/mm/ptdump.c
> @@ -331,7 +331,7 @@ static int ptdump_show(struct seq_file *m, void *v)
>
> DEFINE_SHOW_ATTRIBUTE(ptdump);
>
> -static int ptdump_init(void)
> +static int __init ptdump_init(void)
> {
> unsigned int i, j;
>
> --
> 2.31.0
>
>
>
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Apart from above, looks good to me.
Reviewed-by: Anup Patel <anup@xxxxxxxxxxxxxx>
Regards,
Anup
