Subject: [merged] memblock-mem_hotplug-introduce-memblock_hotplug-flag-to-mark-hotpluggable-regions.patch removed from -mm tree To: tangchen@xxxxxxxxxxxxxx,gong.chen@xxxxxxxxxxxxxxx,hannes@xxxxxxxxxxx,hpa@xxxxxxxxx,imtangchen@xxxxxxxxx,isimatu.yasuaki@xxxxxxxxxxxxxx,izumi.taku@xxxxxxxxxxxxxx,jiang.liu@xxxxxxxxxx,laijs@xxxxxxxxxxxxxx,lenb@xxxxxxxxxx,liwanp@xxxxxxxxxxxxxxxxxx,lwoodman@xxxxxxxxxx,mgorman@xxxxxxx,mina86@xxxxxxxxxx,minchan@xxxxxxxxxx,mingo@xxxxxxx,prarit@xxxxxxxxxx,riel@xxxxxxxxxx,rjw@xxxxxxx,tglx@xxxxxxxxxxxxx,tj@xxxxxxxxxx,toshi.kani@xxxxxx,trenn@xxxxxxx,vasilis.liaskovitis@xxxxxxxxxxxxxxxx,wency@xxxxxxxxxxxxxx,yinghai@xxxxxxxxxx,zhangyanfei@xxxxxxxxxxxxxx,mm-commits@xxxxxxxxxxxxxxx From: akpm@xxxxxxxxxxxxxxxxxxxx Date: Wed, 22 Jan 2014 12:13:02 -0800 The patch titled Subject: memblock, mem_hotplug: introduce MEMBLOCK_HOTPLUG flag to mark hotpluggable regions has been removed from the -mm tree. Its filename was memblock-mem_hotplug-introduce-memblock_hotplug-flag-to-mark-hotpluggable-regions.patch This patch was dropped because it was merged into mainline or a subsystem tree ------------------------------------------------------ From: Tang Chen <tangchen@xxxxxxxxxxxxxx> Subject: memblock, mem_hotplug: introduce MEMBLOCK_HOTPLUG flag to mark hotpluggable regions In find_hotpluggable_memory, once we find out a memory region which is hotpluggable, we want to mark them in memblock.memory. So that we could control memblock allocator not to allocte hotpluggable memory for the kernel later. To achieve this goal, we introduce MEMBLOCK_HOTPLUG flag to indicate the hotpluggable memory regions in memblock and a function memblock_mark_hotplug() to mark hotpluggable memory if we find one. [akpm@xxxxxxxxxxxxxxxxxxxx: coding-style fixes] Signed-off-by: Tang Chen <tangchen@xxxxxxxxxxxxxx> Reviewed-by: Zhang Yanfei <zhangyanfei@xxxxxxxxxxxxxx> Cc: "H. Peter Anvin" <hpa@xxxxxxxxx> Cc: "Rafael J . Wysocki" <rjw@xxxxxxx> Cc: Chen Tang <imtangchen@xxxxxxxxx> Cc: Gong Chen <gong.chen@xxxxxxxxxxxxxxx> Cc: Ingo Molnar <mingo@xxxxxxx> Cc: Jiang Liu <jiang.liu@xxxxxxxxxx> Cc: Johannes Weiner <hannes@xxxxxxxxxxx> Cc: Lai Jiangshan <laijs@xxxxxxxxxxxxxx> Cc: Larry Woodman <lwoodman@xxxxxxxxxx> Cc: Len Brown <lenb@xxxxxxxxxx> Cc: Liu Jiang <jiang.liu@xxxxxxxxxx> Cc: Mel Gorman <mgorman@xxxxxxx> Cc: Michal Nazarewicz <mina86@xxxxxxxxxx> Cc: Minchan Kim <minchan@xxxxxxxxxx> Cc: Prarit Bhargava <prarit@xxxxxxxxxx> Cc: Rik van Riel <riel@xxxxxxxxxx> Cc: Taku Izumi <izumi.taku@xxxxxxxxxxxxxx> Cc: Tejun Heo <tj@xxxxxxxxxx> Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx> Cc: Thomas Renninger <trenn@xxxxxxx> Cc: Toshi Kani <toshi.kani@xxxxxx> Cc: Vasilis Liaskovitis <vasilis.liaskovitis@xxxxxxxxxxxxxxxx> Cc: Wanpeng Li <liwanp@xxxxxxxxxxxxxxxxxx> Cc: Wen Congyang <wency@xxxxxxxxxxxxxx> Cc: Yasuaki Ishimatsu <isimatu.yasuaki@xxxxxxxxxxxxxx> Cc: Yinghai Lu <yinghai@xxxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- include/linux/memblock.h | 17 +++++++++++ mm/memblock.c | 53 +++++++++++++++++++++++++++++++++++++ 2 files changed, 70 insertions(+) diff -puN include/linux/memblock.h~memblock-mem_hotplug-introduce-memblock_hotplug-flag-to-mark-hotpluggable-regions include/linux/memblock.h --- a/include/linux/memblock.h~memblock-mem_hotplug-introduce-memblock_hotplug-flag-to-mark-hotpluggable-regions +++ a/include/linux/memblock.h @@ -19,6 +19,9 @@ #define INIT_MEMBLOCK_REGIONS 128 +/* Definition of memblock flags. */ +#define MEMBLOCK_HOTPLUG 0x1 /* hotpluggable region */ + struct memblock_region { phys_addr_t base; phys_addr_t size; @@ -60,6 +63,8 @@ int memblock_remove(phys_addr_t base, ph int memblock_free(phys_addr_t base, phys_addr_t size); int memblock_reserve(phys_addr_t base, phys_addr_t size); void memblock_trim_memory(phys_addr_t align); +int memblock_mark_hotplug(phys_addr_t base, phys_addr_t size); +int memblock_clear_hotplug(phys_addr_t base, phys_addr_t size); #ifdef CONFIG_HAVE_MEMBLOCK_NODE_MAP int memblock_search_pfn_nid(unsigned long pfn, unsigned long *start_pfn, @@ -122,6 +127,18 @@ void __next_free_mem_range_rev(u64 *idx, i != (u64)ULLONG_MAX; \ __next_free_mem_range_rev(&i, nid, p_start, p_end, p_nid)) +static inline void memblock_set_region_flags(struct memblock_region *r, + unsigned long flags) +{ + r->flags |= flags; +} + +static inline void memblock_clear_region_flags(struct memblock_region *r, + unsigned long flags) +{ + r->flags &= ~flags; +} + #ifdef CONFIG_HAVE_MEMBLOCK_NODE_MAP int memblock_set_node(phys_addr_t base, phys_addr_t size, int nid); diff -puN mm/memblock.c~memblock-mem_hotplug-introduce-memblock_hotplug-flag-to-mark-hotpluggable-regions mm/memblock.c --- a/mm/memblock.c~memblock-mem_hotplug-introduce-memblock_hotplug-flag-to-mark-hotpluggable-regions +++ a/mm/memblock.c @@ -683,6 +683,59 @@ int __init_memblock memblock_reserve(phy } /** + * memblock_mark_hotplug - Mark hotpluggable memory with flag MEMBLOCK_HOTPLUG. + * @base: the base phys addr of the region + * @size: the size of the region + * + * This function isolates region [@base, @base + @size), and mark it with flag + * MEMBLOCK_HOTPLUG. + * + * Return 0 on succees, -errno on failure. + */ +int __init_memblock memblock_mark_hotplug(phys_addr_t base, phys_addr_t size) +{ + struct memblock_type *type = &memblock.memory; + int i, ret, start_rgn, end_rgn; + + ret = memblock_isolate_range(type, base, size, &start_rgn, &end_rgn); + if (ret) + return ret; + + for (i = start_rgn; i < end_rgn; i++) + memblock_set_region_flags(&type->regions[i], MEMBLOCK_HOTPLUG); + + memblock_merge_regions(type); + return 0; +} + +/** + * memblock_clear_hotplug - Clear flag MEMBLOCK_HOTPLUG for a specified region. + * @base: the base phys addr of the region + * @size: the size of the region + * + * This function isolates region [@base, @base + @size), and clear flag + * MEMBLOCK_HOTPLUG for the isolated regions. + * + * Return 0 on succees, -errno on failure. + */ +int __init_memblock memblock_clear_hotplug(phys_addr_t base, phys_addr_t size) +{ + struct memblock_type *type = &memblock.memory; + int i, ret, start_rgn, end_rgn; + + ret = memblock_isolate_range(type, base, size, &start_rgn, &end_rgn); + if (ret) + return ret; + + for (i = start_rgn; i < end_rgn; i++) + memblock_clear_region_flags(&type->regions[i], + MEMBLOCK_HOTPLUG); + + memblock_merge_regions(type); + return 0; +} + +/** * __next_free_mem_range - next function for for_each_free_mem_range() * @idx: pointer to u64 loop variable * @nid: node selector, %MAX_NUMNODES for all nodes _ Patches currently in -mm which might be from tangchen@xxxxxxxxxxxxxx are origin.patch mm-nobootmemc-add-return-value-check-in-__alloc_memory_core_early.patch mm-free-memblockmemory-in-free_all_bootmem.patch mm-free-memblockmemory-in-free_all_bootmem-fix.patch mm-nobootmem-free_all_bootmem-again.patch mm-memory_hotplugc-move-register_memory_resource-out-of-the-lock_memory_hotplug.patch linux-next.patch -- To unsubscribe from this list: send the line "unsubscribe mm-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html