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riscv: Mark some global variables __ro_after_init

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All of these are never modified after init, so they can be
__ro_after_init.

Signed-off-by: Jisheng Zhang <jszhang@kernel.org>
Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>
This commit is contained in:
Jisheng Zhang 2021-03-30 02:22:51 +08:00 committed by Palmer Dabbelt
parent 1987501b11
commit de31ea4a11
No known key found for this signature in database
GPG Key ID: 2E1319F35FBB1889
5 changed files with 12 additions and 12 deletions
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8
arch/riscv/kernel/sbi.c
View File

@ -11,14 +11,14 @@
#include <asm/smp.h>
/* default SBI version is 0.1 */
unsigned long sbi_spec_version = SBI_SPEC_VERSION_DEFAULT;
unsigned long sbi_spec_version __ro_after_init = SBI_SPEC_VERSION_DEFAULT;
EXPORT_SYMBOL(sbi_spec_version);
static void (*__sbi_set_timer)(uint64_t stime);
static int (*__sbi_send_ipi)(const unsigned long *hart_mask);
static void (*__sbi_set_timer)(uint64_t stime) __ro_after_init;
static int (*__sbi_send_ipi)(const unsigned long *hart_mask) __ro_after_init;
static int (*__sbi_rfence)(int fid, const unsigned long *hart_mask,
unsigned long start, unsigned long size,
unsigned long arg4, unsigned long arg5);
unsigned long arg4, unsigned long arg5) __ro_after_init;
struct sbiret sbi_ecall(int ext, int fid, unsigned long arg0,
unsigned long arg1, unsigned long arg2,

4
arch/riscv/kernel/smp.c
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@ -32,7 +32,7 @@ enum ipi_message_type {
IPI_MAX
};
unsigned long __cpuid_to_hartid_map[NR_CPUS] = {
unsigned long __cpuid_to_hartid_map[NR_CPUS] __ro_after_init = {
[0 ... NR_CPUS-1] = INVALID_HARTID
};
@ -87,7 +87,7 @@ static void ipi_stop(void)
wait_for_interrupt();
}
static struct riscv_ipi_ops *ipi_ops;
static struct riscv_ipi_ops *ipi_ops __ro_after_init;
void riscv_set_ipi_ops(struct riscv_ipi_ops *ops)
{

2
arch/riscv/kernel/time.c
View File

@ -10,7 +10,7 @@
#include <asm/sbi.h>
#include <asm/processor.h>
unsigned long riscv_timebase;
unsigned long riscv_timebase __ro_after_init;
EXPORT_SYMBOL_GPL(riscv_timebase);
void __init time_init(void)

4
arch/riscv/kernel/vdso.c
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@ -20,8 +20,8 @@
extern char vdso_start[], vdso_end[];
static unsigned int vdso_pages;
static struct page **vdso_pagelist;
static unsigned int vdso_pages __ro_after_init;
static struct page **vdso_pagelist __ro_after_init;
/*
* The vDSO data page.

6
arch/riscv/mm/init.c
View File

@ -162,17 +162,17 @@ void __init setup_bootmem(void)
}
#ifdef CONFIG_MMU
static struct pt_alloc_ops pt_ops;
static struct pt_alloc_ops pt_ops __ro_after_init;
/* Offset between linear mapping virtual address and kernel load address */
unsigned long va_pa_offset;
unsigned long va_pa_offset __ro_after_init;
EXPORT_SYMBOL(va_pa_offset);
#ifdef CONFIG_64BIT
/* Offset between kernel mapping virtual address and kernel load address */
unsigned long va_kernel_pa_offset;
EXPORT_SYMBOL(va_kernel_pa_offset);
#endif
unsigned long pfn_base;
unsigned long pfn_base __ro_after_init;
EXPORT_SYMBOL(pfn_base);
pgd_t swapper_pg_dir[PTRS_PER_PGD] __page_aligned_bss;