* [PATCH v2, part1 03/29] mm/ARM: use common help functions to free reserved pages [not found] <1362896833-21104-1-git-send-email-jiang.liu@huawei.com> @ 2013-03-10 6:26 ` Jiang Liu 2013-04-04 15:47 ` Arnd Bergmann 0 siblings, 1 reply; 3+ messages in thread From: Jiang Liu @ 2013-03-10 6:26 UTC (permalink / raw) To: linux-arm-kernel Use common help functions to free reserved pages. Signed-off-by: Jiang Liu <jiang.liu@huawei.com> Cc: Russell King <linux@arm.linux.org.uk> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Will Deacon <will.deacon@arm.com> Cc: linux-arm-kernel at lists.infradead.org Cc: linux-kernel at vger.kernel.org --- arch/arm/mm/init.c | 48 ++++++++++++++++-------------------------------- arch/arm64/mm/init.c | 26 ++------------------------ 2 files changed, 18 insertions(+), 56 deletions(-) diff --git a/arch/arm/mm/init.c b/arch/arm/mm/init.c index ad722f1..40a5bc2 100644 --- a/arch/arm/mm/init.c +++ b/arch/arm/mm/init.c @@ -424,24 +424,6 @@ void __init bootmem_init(void) max_pfn = max_high - PHYS_PFN_OFFSET; } -static inline int free_area(unsigned long pfn, unsigned long end, char *s) -{ - unsigned int pages = 0, size = (end - pfn) << (PAGE_SHIFT - 10); - - for (; pfn < end; pfn++) { - struct page *page = pfn_to_page(pfn); - ClearPageReserved(page); - init_page_count(page); - __free_page(page); - pages++; - } - - if (size && s) - printk(KERN_INFO "Freeing %s memory: %dK\n", s, size); - - return pages; -} - /* * Poison init memory with an undefined instruction (ARM) or a branch to an * undefined instruction (Thumb). @@ -534,6 +516,16 @@ static void __init free_unused_memmap(struct meminfo *mi) #endif } +#ifdef CONFIG_HIGHMEM +static inline void free_area_high(unsigned long pfn, unsigned long end) +{ + for (; pfn < end; pfn++) { + __free_reserved_page(pfn_to_page(pfn)); + totalhigh_pages++; + } +} +#endif + static void __init free_highpages(void) { #ifdef CONFIG_HIGHMEM @@ -569,8 +561,7 @@ static void __init free_highpages(void) if (res_end > end) res_end = end; if (res_start != start) - totalhigh_pages += free_area(start, res_start, - NULL); + free_area_high(start, res_start); start = res_end; if (start == end) break; @@ -578,7 +569,7 @@ static void __init free_highpages(void) /* And now free anything which remains */ if (start < end) - totalhigh_pages += free_area(start, end, NULL); + free_area_high(start, end); } totalram_pages += totalhigh_pages; #endif @@ -609,8 +600,7 @@ void __init mem_init(void) #ifdef CONFIG_SA1111 /* now that our DMA memory is actually so designated, we can free it */ - totalram_pages += free_area(PHYS_PFN_OFFSET, - __phys_to_pfn(__pa(swapper_pg_dir)), NULL); + free_reserved_area(__va(PHYS_PFN_OFFSET), swapper_pg_dir, 0, NULL); #endif free_highpages(); @@ -738,16 +728,12 @@ void free_initmem(void) extern char __tcm_start, __tcm_end; poison_init_mem(&__tcm_start, &__tcm_end - &__tcm_start); - totalram_pages += free_area(__phys_to_pfn(__pa(&__tcm_start)), - __phys_to_pfn(__pa(&__tcm_end)), - "TCM link"); + free_reserved_area(&__tcm_start, &__tcm_end, 0, "TCM link"); #endif poison_init_mem(__init_begin, __init_end - __init_begin); if (!machine_is_integrator() && !machine_is_cintegrator()) - totalram_pages += free_area(__phys_to_pfn(__pa(__init_begin)), - __phys_to_pfn(__pa(__init_end)), - "init"); + free_initmem_default(0); } #ifdef CONFIG_BLK_DEV_INITRD @@ -758,9 +744,7 @@ void free_initrd_mem(unsigned long start, unsigned long end) { if (!keep_initrd) { poison_init_mem((void *)start, PAGE_ALIGN(end) - start); - totalram_pages += free_area(__phys_to_pfn(__pa(start)), - __phys_to_pfn(__pa(end)), - "initrd"); + free_reserved_area(start, end, 0, "initrd"); } } diff --git a/arch/arm64/mm/init.c b/arch/arm64/mm/init.c index 800aac3..f497ca7 100644 --- a/arch/arm64/mm/init.c +++ b/arch/arm64/mm/init.c @@ -197,24 +197,6 @@ void __init bootmem_init(void) max_pfn = max_low_pfn = max; } -static inline int free_area(unsigned long pfn, unsigned long end, char *s) -{ - unsigned int pages = 0, size = (end - pfn) << (PAGE_SHIFT - 10); - - for (; pfn < end; pfn++) { - struct page *page = pfn_to_page(pfn); - ClearPageReserved(page); - init_page_count(page); - __free_page(page); - pages++; - } - - if (size && s) - pr_info("Freeing %s memory: %dK\n", s, size); - - return pages; -} - /* * Poison init memory with an undefined instruction (0x0). */ @@ -405,9 +387,7 @@ void __init mem_init(void) void free_initmem(void) { poison_init_mem(__init_begin, __init_end - __init_begin); - totalram_pages += free_area(__phys_to_pfn(__pa(__init_begin)), - __phys_to_pfn(__pa(__init_end)), - "init"); + free_initmem_default(0); } #ifdef CONFIG_BLK_DEV_INITRD @@ -418,9 +398,7 @@ void free_initrd_mem(unsigned long start, unsigned long end) { if (!keep_initrd) { poison_init_mem((void *)start, PAGE_ALIGN(end) - start); - totalram_pages += free_area(__phys_to_pfn(__pa(start)), - __phys_to_pfn(__pa(end)), - "initrd"); + free_reserved_area(start, end, 0, "initrd"); } } -- 1.7.9.5 ^ permalink raw reply related [flat|nested] 3+ messages in thread
* [PATCH v2, part1 03/29] mm/ARM: use common help functions to free reserved pages 2013-03-10 6:26 ` [PATCH v2, part1 03/29] mm/ARM: use common help functions to free reserved pages Jiang Liu @ 2013-04-04 15:47 ` Arnd Bergmann 2013-04-06 14:07 ` Jiang Liu 0 siblings, 1 reply; 3+ messages in thread From: Arnd Bergmann @ 2013-04-04 15:47 UTC (permalink / raw) To: linux-arm-kernel On Sunday 10 March 2013, Jiang Liu wrote: > Use common help functions to free reserved pages. > > Signed-off-by: Jiang Liu <jiang.liu@huawei.com> > Cc: Russell King <linux@arm.linux.org.uk> > Cc: Catalin Marinas <catalin.marinas@arm.com> > Cc: Will Deacon <will.deacon@arm.com> > Cc: linux-arm-kernel at lists.infradead.org > Cc: linux-kernel at vger.kernel.org Hello Jiang Liu, I'm getting a few new build warnings from this patch in linux-next, can you please have a look what's going on here? > @@ -609,8 +600,7 @@ void __init mem_init(void) > > #ifdef CONFIG_SA1111 > /* now that our DMA memory is actually so designated, we can free it */ > - totalram_pages += free_area(PHYS_PFN_OFFSET, > - __phys_to_pfn(__pa(swapper_pg_dir)), NULL); > + free_reserved_area(__va(PHYS_PFN_OFFSET), swapper_pg_dir, 0, NULL); > #endif Using neponset_defconfig: arch/arm/mm/init.c: In function 'mem_init': arch/arm/mm/init.c:603:2: warning: passing argument 1 of 'free_reserved_area' makes integer from pointer without a cast [enabled by default] free_reserved_area(__va(PHYS_PFN_OFFSET), swapper_pg_dir, 0, NULL); ^ In file included from include/linux/mman.h:4:0, from arch/arm/mm/init.c:15: include/linux/mm.h:1301:22: note: expected 'long unsigned int' but argument is of type 'void *' extern unsigned long free_reserved_area(unsigned long start, unsigned long end, ^ > @@ -738,16 +728,12 @@ void free_initmem(void) > extern char __tcm_start, __tcm_end; > > poison_init_mem(&__tcm_start, &__tcm_end - &__tcm_start); > - totalram_pages += free_area(__phys_to_pfn(__pa(&__tcm_start)), > - __phys_to_pfn(__pa(&__tcm_end)), > - "TCM link"); > + free_reserved_area(&__tcm_start, &__tcm_end, 0, "TCM link"); > #endif Using one of {realview,s3c6400,u300}_defconfig: /git/arm-soc/arch/arm/mm/init.c: In function 'free_initmem': /git/arm-soc/arch/arm/mm/init.c:731:2: warning: passing argument 1 of 'free_reserved_area' makes integer from pointer without a cast [enabled by default] free_reserved_area(&__tcm_start, &__tcm_end, 0, "TCM link"); ^ In file included from /git/arm-soc/include/linux/mman.h:4:0, from /git/arm-soc/arch/arm/mm/init.c:15: /git/arm-soc/include/linux/mm.h:1301:22: note: expected 'long unsigned int' but argument is of type 'char *' extern unsigned long free_reserved_area(unsigned long start, unsigned long end, ^ Arnd ^ permalink raw reply [flat|nested] 3+ messages in thread
* [PATCH v2, part1 03/29] mm/ARM: use common help functions to free reserved pages 2013-04-04 15:47 ` Arnd Bergmann @ 2013-04-06 14:07 ` Jiang Liu 0 siblings, 0 replies; 3+ messages in thread From: Jiang Liu @ 2013-04-06 14:07 UTC (permalink / raw) To: linux-arm-kernel Hi Arnd, Missed some type casts for ARM. Could you please help check the patch at http://marc.info/?l=linux-mm&m=136525654717201&w=2? Thanks! Gerry On 04/04/2013 11:47 PM, Arnd Bergmann wrote: > On Sunday 10 March 2013, Jiang Liu wrote: >> Use common help functions to free reserved pages. >> >> Signed-off-by: Jiang Liu <jiang.liu@huawei.com> >> Cc: Russell King <linux@arm.linux.org.uk> >> Cc: Catalin Marinas <catalin.marinas@arm.com> >> Cc: Will Deacon <will.deacon@arm.com> >> Cc: linux-arm-kernel at lists.infradead.org >> Cc: linux-kernel at vger.kernel.org > > Hello Jiang Liu, > > I'm getting a few new build warnings from this patch in linux-next, can you please > have a look what's going on here? > >> @@ -609,8 +600,7 @@ void __init mem_init(void) >> >> #ifdef CONFIG_SA1111 >> /* now that our DMA memory is actually so designated, we can free it */ >> - totalram_pages += free_area(PHYS_PFN_OFFSET, >> - __phys_to_pfn(__pa(swapper_pg_dir)), NULL); >> + free_reserved_area(__va(PHYS_PFN_OFFSET), swapper_pg_dir, 0, NULL); >> #endif > > Using neponset_defconfig: > > arch/arm/mm/init.c: In function 'mem_init': > arch/arm/mm/init.c:603:2: warning: passing argument 1 of 'free_reserved_area' makes integer from pointer without a cast [enabled by default] > free_reserved_area(__va(PHYS_PFN_OFFSET), swapper_pg_dir, 0, NULL); > ^ > In file included from include/linux/mman.h:4:0, > from arch/arm/mm/init.c:15: > include/linux/mm.h:1301:22: note: expected 'long unsigned int' but argument is of type 'void *' > extern unsigned long free_reserved_area(unsigned long start, unsigned long end, > ^ > >> @@ -738,16 +728,12 @@ void free_initmem(void) >> extern char __tcm_start, __tcm_end; >> >> poison_init_mem(&__tcm_start, &__tcm_end - &__tcm_start); >> - totalram_pages += free_area(__phys_to_pfn(__pa(&__tcm_start)), >> - __phys_to_pfn(__pa(&__tcm_end)), >> - "TCM link"); >> + free_reserved_area(&__tcm_start, &__tcm_end, 0, "TCM link"); >> #endif > > Using one of {realview,s3c6400,u300}_defconfig: > > /git/arm-soc/arch/arm/mm/init.c: In function 'free_initmem': > /git/arm-soc/arch/arm/mm/init.c:731:2: warning: passing argument 1 of 'free_reserved_area' makes integer from pointer without a cast [enabled by default] > free_reserved_area(&__tcm_start, &__tcm_end, 0, "TCM link"); > ^ > In file included from /git/arm-soc/include/linux/mman.h:4:0, > from /git/arm-soc/arch/arm/mm/init.c:15: > /git/arm-soc/include/linux/mm.h:1301:22: note: expected 'long unsigned int' but argument is of type 'char *' > extern unsigned long free_reserved_area(unsigned long start, unsigned long end, > ^ > > Arnd > -- > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in > the body of a message to majordomo at vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html > Please read the FAQ at http://www.tux.org/lkml/ > ^ permalink raw reply [flat|nested] 3+ messages in thread
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2013-03-10 6:26 ` [PATCH v2, part1 03/29] mm/ARM: use common help functions to free reserved pages Jiang Liu
2013-04-04 15:47 ` Arnd Bergmann
2013-04-06 14:07 ` Jiang Liu
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