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[209.132.180.67]) by mx.google.com with ESMTP id f2-v6si4985423pgg.552.2018.09.06.04.05.02; Thu, 06 Sep 2018 04:05:18 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728094AbeIFNaf (ORCPT + 99 others); Thu, 6 Sep 2018 09:30:35 -0400 Received: from mx2.suse.de ([195.135.220.15]:42092 "EHLO mx1.suse.de" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1727838AbeIFNaf (ORCPT ); Thu, 6 Sep 2018 09:30:35 -0400 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.220.254]) by mx1.suse.de (Postfix) with ESMTP id 87B5DACE1; Thu, 6 Sep 2018 08:56:07 +0000 (UTC) Date: Thu, 6 Sep 2018 10:56:07 +0200 From: Michal Hocko To: Mike Rapoport Cc: linux-mm@kvack.org, Andrew Morton , "David S. Miller" , Greg Kroah-Hartman , Ingo Molnar , Michael Ellerman , Paul Burton , Thomas Gleixner , Tony Luck , linux-ia64@vger.kernel.org, linux-mips@linux-mips.org, linuxppc-dev@lists.ozlabs.org, sparclinux@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [RFC PATCH 22/29] mm: nobootmem: remove bootmem allocation APIs Message-ID: <20180906085607.GG14951@dhcp22.suse.cz> References: <1536163184-26356-1-git-send-email-rppt@linux.vnet.ibm.com> <1536163184-26356-23-git-send-email-rppt@linux.vnet.ibm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1536163184-26356-23-git-send-email-rppt@linux.vnet.ibm.com> User-Agent: Mutt/1.10.1 (2018-07-13) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed 05-09-18 18:59:37, Mike Rapoport wrote: > The bootmem compatibility APIs are not used and can be removed. > > Signed-off-by: Mike Rapoport I am happy to see this finally go Acked-by: Michal Hocko > --- > include/linux/bootmem.h | 47 ---------- > mm/nobootmem.c | 224 ------------------------------------------------ > 2 files changed, 271 deletions(-) > > diff --git a/include/linux/bootmem.h b/include/linux/bootmem.h > index c97c105..73f1272 100644 > --- a/include/linux/bootmem.h > +++ b/include/linux/bootmem.h > @@ -36,33 +36,6 @@ extern void free_bootmem_node(pg_data_t *pgdat, > extern void free_bootmem(unsigned long physaddr, unsigned long size); > extern void free_bootmem_late(unsigned long physaddr, unsigned long size); > > -extern void *__alloc_bootmem(unsigned long size, > - unsigned long align, > - unsigned long goal); > -extern void *__alloc_bootmem_nopanic(unsigned long size, > - unsigned long align, > - unsigned long goal) __malloc; > -extern void *__alloc_bootmem_node(pg_data_t *pgdat, > - unsigned long size, > - unsigned long align, > - unsigned long goal) __malloc; > -void *__alloc_bootmem_node_high(pg_data_t *pgdat, > - unsigned long size, > - unsigned long align, > - unsigned long goal) __malloc; > -extern void *__alloc_bootmem_node_nopanic(pg_data_t *pgdat, > - unsigned long size, > - unsigned long align, > - unsigned long goal) __malloc; > -void *___alloc_bootmem_node_nopanic(pg_data_t *pgdat, > - unsigned long size, > - unsigned long align, > - unsigned long goal, > - unsigned long limit) __malloc; > -extern void *__alloc_bootmem_low(unsigned long size, > - unsigned long align, > - unsigned long goal) __malloc; > - > /* We are using top down, so it is safe to use 0 here */ > #define BOOTMEM_LOW_LIMIT 0 > > @@ -70,26 +43,6 @@ extern void *__alloc_bootmem_low(unsigned long size, > #define ARCH_LOW_ADDRESS_LIMIT 0xffffffffUL > #endif > > -#define alloc_bootmem(x) \ > - __alloc_bootmem(x, SMP_CACHE_BYTES, BOOTMEM_LOW_LIMIT) > -#define alloc_bootmem_align(x, align) \ > - __alloc_bootmem(x, align, BOOTMEM_LOW_LIMIT) > -#define alloc_bootmem_pages(x) \ > - __alloc_bootmem(x, PAGE_SIZE, BOOTMEM_LOW_LIMIT) > -#define alloc_bootmem_pages_nopanic(x) \ > - __alloc_bootmem_nopanic(x, PAGE_SIZE, BOOTMEM_LOW_LIMIT) > -#define alloc_bootmem_node(pgdat, x) \ > - __alloc_bootmem_node(pgdat, x, SMP_CACHE_BYTES, BOOTMEM_LOW_LIMIT) > -#define alloc_bootmem_node_nopanic(pgdat, x) \ > - __alloc_bootmem_node_nopanic(pgdat, x, SMP_CACHE_BYTES, BOOTMEM_LOW_LIMIT) > -#define alloc_bootmem_pages_node(pgdat, x) \ > - __alloc_bootmem_node(pgdat, x, PAGE_SIZE, BOOTMEM_LOW_LIMIT) > - > -#define alloc_bootmem_low(x) \ > - __alloc_bootmem_low(x, SMP_CACHE_BYTES, 0) > -#define alloc_bootmem_low_pages(x) \ > - __alloc_bootmem_low(x, PAGE_SIZE, 0) > - > /* FIXME: use MEMBLOCK_ALLOC_* variants here */ > #define BOOTMEM_ALLOC_ACCESSIBLE 0 > #define BOOTMEM_ALLOC_ANYWHERE (~(phys_addr_t)0) > diff --git a/mm/nobootmem.c b/mm/nobootmem.c > index 44ce7de..bc38e56 100644 > --- a/mm/nobootmem.c > +++ b/mm/nobootmem.c > @@ -33,41 +33,6 @@ unsigned long min_low_pfn; > unsigned long max_pfn; > unsigned long long max_possible_pfn; > > -static void * __init __alloc_memory_core_early(int nid, u64 size, u64 align, > - u64 goal, u64 limit) > -{ > - void *ptr; > - u64 addr; > - enum memblock_flags flags = choose_memblock_flags(); > - > - if (limit > memblock.current_limit) > - limit = memblock.current_limit; > - > -again: > - addr = memblock_find_in_range_node(size, align, goal, limit, nid, > - flags); > - if (!addr && (flags & MEMBLOCK_MIRROR)) { > - flags &= ~MEMBLOCK_MIRROR; > - pr_warn("Could not allocate %pap bytes of mirrored memory\n", > - &size); > - goto again; > - } > - if (!addr) > - return NULL; > - > - if (memblock_reserve(addr, size)) > - return NULL; > - > - ptr = phys_to_virt(addr); > - memset(ptr, 0, size); > - /* > - * The min_count is set to 0 so that bootmem allocated blocks > - * are never reported as leaks. > - */ > - kmemleak_alloc(ptr, size, 0, 0); > - return ptr; > -} > - > /** > * free_bootmem_late - free bootmem pages directly to page allocator > * @addr: starting address of the range > @@ -215,192 +180,3 @@ void __init free_bootmem(unsigned long addr, unsigned long size) > { > memblock_free(addr, size); > } > - > -static void * __init ___alloc_bootmem_nopanic(unsigned long size, > - unsigned long align, > - unsigned long goal, > - unsigned long limit) > -{ > - void *ptr; > - > - if (WARN_ON_ONCE(slab_is_available())) > - return kzalloc(size, GFP_NOWAIT); > - > -restart: > - > - ptr = __alloc_memory_core_early(NUMA_NO_NODE, size, align, goal, limit); > - > - if (ptr) > - return ptr; > - > - if (goal != 0) { > - goal = 0; > - goto restart; > - } > - > - return NULL; > -} > - > -/** > - * __alloc_bootmem_nopanic - allocate boot memory without panicking > - * @size: size of the request in bytes > - * @align: alignment of the region > - * @goal: preferred starting address of the region > - * > - * The goal is dropped if it can not be satisfied and the allocation will > - * fall back to memory below @goal. > - * > - * Allocation may happen on any node in the system. > - * > - * Return: address of the allocated region or %NULL on failure. > - */ > -void * __init __alloc_bootmem_nopanic(unsigned long size, unsigned long align, > - unsigned long goal) > -{ > - unsigned long limit = -1UL; > - > - return ___alloc_bootmem_nopanic(size, align, goal, limit); > -} > - > -static void * __init ___alloc_bootmem(unsigned long size, unsigned long align, > - unsigned long goal, unsigned long limit) > -{ > - void *mem = ___alloc_bootmem_nopanic(size, align, goal, limit); > - > - if (mem) > - return mem; > - /* > - * Whoops, we cannot satisfy the allocation request. > - */ > - pr_alert("bootmem alloc of %lu bytes failed!\n", size); > - panic("Out of memory"); > - return NULL; > -} > - > -/** > - * __alloc_bootmem - allocate boot memory > - * @size: size of the request in bytes > - * @align: alignment of the region > - * @goal: preferred starting address of the region > - * > - * The goal is dropped if it can not be satisfied and the allocation will > - * fall back to memory below @goal. > - * > - * Allocation may happen on any node in the system. > - * > - * The function panics if the request can not be satisfied. > - * > - * Return: address of the allocated region. > - */ > -void * __init __alloc_bootmem(unsigned long size, unsigned long align, > - unsigned long goal) > -{ > - unsigned long limit = -1UL; > - > - return ___alloc_bootmem(size, align, goal, limit); > -} > - > -void * __init ___alloc_bootmem_node_nopanic(pg_data_t *pgdat, > - unsigned long size, > - unsigned long align, > - unsigned long goal, > - unsigned long limit) > -{ > - void *ptr; > - > -again: > - ptr = __alloc_memory_core_early(pgdat->node_id, size, align, > - goal, limit); > - if (ptr) > - return ptr; > - > - ptr = __alloc_memory_core_early(NUMA_NO_NODE, size, align, > - goal, limit); > - if (ptr) > - return ptr; > - > - if (goal) { > - goal = 0; > - goto again; > - } > - > - return NULL; > -} > - > -void * __init __alloc_bootmem_node_nopanic(pg_data_t *pgdat, unsigned long size, > - unsigned long align, unsigned long goal) > -{ > - if (WARN_ON_ONCE(slab_is_available())) > - return kzalloc_node(size, GFP_NOWAIT, pgdat->node_id); > - > - return ___alloc_bootmem_node_nopanic(pgdat, size, align, goal, 0); > -} > - > -static void * __init ___alloc_bootmem_node(pg_data_t *pgdat, unsigned long size, > - unsigned long align, unsigned long goal, > - unsigned long limit) > -{ > - void *ptr; > - > - ptr = ___alloc_bootmem_node_nopanic(pgdat, size, align, goal, limit); > - if (ptr) > - return ptr; > - > - pr_alert("bootmem alloc of %lu bytes failed!\n", size); > - panic("Out of memory"); > - return NULL; > -} > - > -/** > - * __alloc_bootmem_node - allocate boot memory from a specific node > - * @pgdat: node to allocate from > - * @size: size of the request in bytes > - * @align: alignment of the region > - * @goal: preferred starting address of the region > - * > - * The goal is dropped if it can not be satisfied and the allocation will > - * fall back to memory below @goal. > - * > - * Allocation may fall back to any node in the system if the specified node > - * can not hold the requested memory. > - * > - * The function panics if the request can not be satisfied. > - * > - * Return: address of the allocated region. > - */ > -void * __init __alloc_bootmem_node(pg_data_t *pgdat, unsigned long size, > - unsigned long align, unsigned long goal) > -{ > - if (WARN_ON_ONCE(slab_is_available())) > - return kzalloc_node(size, GFP_NOWAIT, pgdat->node_id); > - > - return ___alloc_bootmem_node(pgdat, size, align, goal, 0); > -} > - > -void * __init __alloc_bootmem_node_high(pg_data_t *pgdat, unsigned long size, > - unsigned long align, unsigned long goal) > -{ > - return __alloc_bootmem_node(pgdat, size, align, goal); > -} > - > - > -/** > - * __alloc_bootmem_low - allocate low boot memory > - * @size: size of the request in bytes > - * @align: alignment of the region > - * @goal: preferred starting address of the region > - * > - * The goal is dropped if it can not be satisfied and the allocation will > - * fall back to memory below @goal. > - * > - * Allocation may happen on any node in the system. > - * > - * The function panics if the request can not be satisfied. > - * > - * Return: address of the allocated region. > - */ > -void * __init __alloc_bootmem_low(unsigned long size, unsigned long align, > - unsigned long goal) > -{ > - return ___alloc_bootmem(size, align, goal, ARCH_LOW_ADDRESS_LIMIT); > -} > -- > 2.7.4 > -- Michal Hocko SUSE Labs