From: Alexey Dobriyan <adobriyan@xxxxxxxxx> Subject: mm: make free_reserved_area() return "const char *" and propagate through down the call stack. Link: http://lkml.kernel.org/r/20181124091411.GC10969@avx2 Signed-off-by: Alexey Dobriyan <adobriyan@xxxxxxxxx> Reviewed-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- --- a/arch/x86/include/asm/processor.h~mm-make-free_reserved_area-return-const-char +++ a/arch/x86/include/asm/processor.h @@ -967,7 +967,7 @@ static inline uint32_t hypervisor_cpuid_ } extern unsigned long arch_align_stack(unsigned long sp); -extern void free_init_pages(char *what, unsigned long begin, unsigned long end); +void free_init_pages(const char *what, unsigned long begin, unsigned long end); extern void free_kernel_image_pages(void *begin, void *end); void default_idle(void); --- a/arch/x86/mm/init.c~mm-make-free_reserved_area-return-const-char +++ a/arch/x86/mm/init.c @@ -742,7 +742,7 @@ int devmem_is_allowed(unsigned long page return 1; } -void free_init_pages(char *what, unsigned long begin, unsigned long end) +void free_init_pages(const char *what, unsigned long begin, unsigned long end) { unsigned long begin_aligned, end_aligned; --- a/include/linux/mm.h~mm-make-free_reserved_area-return-const-char +++ a/include/linux/mm.h @@ -2108,7 +2108,7 @@ extern void free_initmem(void); * Return pages freed into the buddy system. */ extern unsigned long free_reserved_area(void *start, void *end, - int poison, char *s); + int poison, const char *s); #ifdef CONFIG_HIGHMEM /* --- a/mm/page_alloc.c~mm-make-free_reserved_area-return-const-char +++ a/mm/page_alloc.c @@ -7193,7 +7193,7 @@ void adjust_managed_page_count(struct pa } EXPORT_SYMBOL(adjust_managed_page_count); -unsigned long free_reserved_area(void *start, void *end, int poison, char *s) +unsigned long free_reserved_area(void *start, void *end, int poison, const char *s) { void *pos; unsigned long pages = 0; _
