Re: [PATCH 10/15] memblock: make memblock_debug and related functionality private

Baoquan He
2020-07-30T01:54:43Z

On 07/28/20 at 08:11am, Mike Rapoport wrote:
> From: Mike Rapoport <rppt@linux.ibm.com>
>
> The only user of memblock_dbg() outside memblock was s390 setup code and it
> is converted to use pr_debug() instead.
> This allows to stop exposing memblock_debug and memblock_dbg() to the rest
> of the kernel.
>
> Signed-off-by: Mike Rapoport <rppt@linux.ibm.com>
> ---
> arch/s390/kernel/setup.c | 4 ++--
> include/linux/memblock.h | 12 +-----------
> mm/memblock.c | 13 +++++++++++--
> 3 files changed, 14 insertions(+), 15 deletions(-)

Nice clean up.

Reviewed-by: Baoquan He <bhe@redhat.com>

>
> diff --git a/arch/s390/kernel/setup.c b/arch/s390/kernel/setup.c
> index 07aa15ba43b3..8b284cf6e199 100644
> --- a/arch/s390/kernel/setup.c
> +++ b/arch/s390/kernel/setup.c
> @@ -776,8 +776,8 @@ static void __init memblock_add_mem_detect_info(void)
> unsigned long start, end;
> int i;
>
> - memblock_dbg("physmem info source: %s (%hhd)\n",
> - get_mem_info_source(), mem_detect.info_source);
> + pr_debug("physmem info source: %s (%hhd)\n",
> + get_mem_info_source(), mem_detect.info_source);
> /* keep memblock lists close to the kernel */
> memblock_set_bottom_up(true);
> for_each_mem_detect_block(i, &start, &end) {
> diff --git a/include/linux/memblock.h b/include/linux/memblock.h
> index 220b5f0dad42..e6a23b3db696 100644
> --- a/include/linux/memblock.h
> +++ b/include/linux/memblock.h
> @@ -90,7 +90,6 @@ struct memblock {
> };
>
> extern struct memblock memblock;
> -extern int memblock_debug;
>
> #ifndef CONFIG_ARCH_KEEP_MEMBLOCK
> #define __init_memblock __meminit
> @@ -102,9 +101,6 @@ void memblock_discard(void);
> static inline void memblock_discard(void) {}
> #endif
>
> -#define memblock_dbg(fmt, ...) \
> - if (memblock_debug) printk(KERN_INFO pr_fmt(fmt), ##__VA_ARGS__)
> -
> phys_addr_t memblock_find_in_range(phys_addr_t start, phys_addr_t end,
> phys_addr_t size, phys_addr_t align);
> void memblock_allow_resize(void);
> @@ -456,13 +452,7 @@ bool memblock_is_region_memory(phys_addr_t base, phys_addr_t size);
> bool memblock_is_reserved(phys_addr_t addr);
> bool memblock_is_region_reserved(phys_addr_t base, phys_addr_t size);
>
> -extern void __memblock_dump_all(void);
> -
> -static inline void memblock_dump_all(void)
> -{
> - if (memblock_debug)
> - __memblock_dump_all();
> -}
> +void memblock_dump_all(void);
>
> /**
> * memblock_set_current_limit - Set the current allocation limit to allow
> diff --git a/mm/memblock.c b/mm/memblock.c
> index a5b9b3df81fc..824938849f6d 100644
> --- a/mm/memblock.c
> +++ b/mm/memblock.c
> @@ -134,7 +134,10 @@ struct memblock memblock __initdata_memblock = {
> i < memblock_type->cnt; \
> i++, rgn = &memblock_type->regions[i])
>
> -int memblock_debug __initdata_memblock;
> +#define memblock_dbg(fmt, ...) \
> + if (memblock_debug) printk(KERN_INFO pr_fmt(fmt), ##__VA_ARGS__)
> +
> +static int memblock_debug __initdata_memblock;
> static bool system_has_some_mirror __initdata_memblock = false;
> static int memblock_can_resize __initdata_memblock;
> static int memblock_memory_in_slab __initdata_memblock = 0;
> @@ -1919,7 +1922,7 @@ static void __init_memblock memblock_dump(struct memblock_type *type)
> }
> }
>
> -void __init_memblock __memblock_dump_all(void)
> +static void __init_memblock __memblock_dump_all(void)
> {
> pr_info("MEMBLOCK configuration:\n");
> pr_info(" memory size = %pa reserved size = %pa\n",
> @@ -1933,6 +1936,12 @@ void __init_memblock __memblock_dump_all(void)
> #endif
> }
>
> +void __init_memblock memblock_dump_all(void)
> +{
> + if (memblock_debug)
> + __memblock_dump_all();
> +}
> +
> void __init memblock_allow_resize(void)
> {
> memblock_can_resize = 1;
> --
> 2.26.2