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[141.146.126.78]) by mx.google.com with ESMTPS id w17-v6si289389eda.448.2018.07.01.19.04.33 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Sun, 01 Jul 2018 19:04:33 -0700 (PDT) Received-SPF: pass (google.com: domain of pasha.tatashin@oracle.com designates 141.146.126.78 as permitted sender) client-ip=141.146.126.78; Authentication-Results: mx.google.com; dkim=pass header.i=@oracle.com header.s=corp-2017-10-26 header.b=JPgZlT1a; spf=pass (google.com: domain of pasha.tatashin@oracle.com designates 141.146.126.78 as permitted sender) smtp.mailfrom=pasha.tatashin@oracle.com; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=oracle.com Received: from pps.filterd (aserp2120.oracle.com [127.0.0.1]) by aserp2120.oracle.com (8.16.0.22/8.16.0.22) with SMTP id w6224RtS109813; Mon, 2 Jul 2018 02:04:27 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=oracle.com; h=from : to : subject : date : message-id : in-reply-to : references; s=corp-2017-10-26; bh=1EW9fjpFyjO72om7gM1gX4zz7TnoCgqETDNxWoh7Ang=; b=JPgZlT1ak3oQsK6K3c1kKZuajJ7yDeAHHliG0u0mcoWG4agCluHsQTtPLZkynTCJKHzu CxfhddBaYY8jMjLB+OPpdn8fv17DbHlAi49JzpnEIGzeDtCTvLEy+dD5LJfLl8ccqoc2 4iiqDUdpl4BlkYKKPm7KKRMigHQt0ga4bQ9Au/A5Hgec40UOprp4PMKnEsJZ+O8RSSRc DLEPBEyksj4mg07AyHs0hPJG4gFwInghNvHq4G0GMTwc4TAc+AzgRWWcYQlCzGZZUe8s tRLVdKWNsNDFavPc0EQgsWjdSzgBu+0yjmfVIMMOUv7Wct92PESInItaW/LIHr4meAqr wg== Received: from userv0022.oracle.com (userv0022.oracle.com [156.151.31.74]) by aserp2120.oracle.com with ESMTP id 2jx1tntj2b-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Mon, 02 Jul 2018 02:04:27 +0000 Received: from aserv0121.oracle.com (aserv0121.oracle.com [141.146.126.235]) by userv0022.oracle.com (8.14.4/8.14.4) with ESMTP id w6224Qdl028080 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Mon, 2 Jul 2018 02:04:26 GMT Received: from abhmp0017.oracle.com (abhmp0017.oracle.com [141.146.116.23]) by aserv0121.oracle.com (8.14.4/8.13.8) with ESMTP id w6224PPh000396; Mon, 2 Jul 2018 02:04:25 GMT Received: from localhost.localdomain (/73.69.118.222) by default (Oracle Beehive Gateway v4.0) with ESMTP ; Sun, 01 Jul 2018 19:04:25 -0700 From: Pavel Tatashin To: steven.sistare@oracle.com, daniel.m.jordan@oracle.com, linux-kernel@vger.kernel.org, akpm@linux-foundation.org, kirill.shutemov@linux.intel.com, mhocko@suse.com, linux-mm@kvack.org, dan.j.williams@intel.com, jack@suse.cz, jglisse@redhat.com, jrdr.linux@gmail.com, bhe@redhat.com, gregkh@linuxfoundation.org, vbabka@suse.cz, richard.weiyang@gmail.com, dave.hansen@intel.com, rientjes@google.com, mingo@kernel.org, osalvador@techadventures.net, pasha.tatashin@oracle.com Subject: [PATCH v3 2/2] mm/sparse: start using sparse_init_nid(), and remove old code Date: Sun, 1 Jul 2018 22:04:17 -0400 Message-Id: <20180702020417.21281-3-pasha.tatashin@oracle.com> X-Mailer: git-send-email 2.18.0 In-Reply-To: <20180702020417.21281-1-pasha.tatashin@oracle.com> References: <20180702020417.21281-1-pasha.tatashin@oracle.com> X-Proofpoint-Virus-Version: vendor=nai engine=5900 definitions=8941 signatures=668704 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 suspectscore=2 malwarescore=0 phishscore=0 bulkscore=0 spamscore=0 mlxscore=0 mlxlogscore=999 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1806210000 definitions=main-1807020023 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: X-Virus-Scanned: ClamAV using ClamSMTP Change sprase_init() to only find the pnum ranges that belong to a specific node and call sprase_init_nid() for that range from sparse_init(). Delete all the code that became obsolete with this change. Signed-off-by: Pavel Tatashin Reviewed-by: Oscar Salvador --- include/linux/mm.h | 5 - mm/sparse-vmemmap.c | 39 -------- mm/sparse.c | 220 ++++---------------------------------------- 3 files changed, 17 insertions(+), 247 deletions(-) diff --git a/include/linux/mm.h b/include/linux/mm.h index 85530fdfb1f2..a7438be90658 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -2646,11 +2646,6 @@ extern int randomize_va_space; const char * arch_vma_name(struct vm_area_struct *vma); void print_vma_addr(char *prefix, unsigned long rip); -void sparse_mem_maps_populate_node(struct page **map_map, - unsigned long pnum_begin, - unsigned long pnum_end, - unsigned long map_count, - int nodeid); struct page * sparse_populate_node(unsigned long pnum_begin, unsigned long pnum_end, unsigned long map_count, diff --git a/mm/sparse-vmemmap.c b/mm/sparse-vmemmap.c index b3e325962306..4edc877cfe82 100644 --- a/mm/sparse-vmemmap.c +++ b/mm/sparse-vmemmap.c @@ -273,45 +273,6 @@ struct page * __meminit sparse_mem_map_populate(unsigned long pnum, int nid, return map; } -void __init sparse_mem_maps_populate_node(struct page **map_map, - unsigned long pnum_begin, - unsigned long pnum_end, - unsigned long map_count, int nodeid) -{ - unsigned long pnum; - unsigned long size = sizeof(struct page) * PAGES_PER_SECTION; - void *vmemmap_buf_start; - int nr_consumed_maps = 0; - - size = ALIGN(size, PMD_SIZE); - vmemmap_buf_start = __earlyonly_bootmem_alloc(nodeid, size * map_count, - PMD_SIZE, __pa(MAX_DMA_ADDRESS)); - - if (vmemmap_buf_start) { - vmemmap_buf = vmemmap_buf_start; - vmemmap_buf_end = vmemmap_buf_start + size * map_count; - } - - for (pnum = pnum_begin; pnum < pnum_end; pnum++) { - if (!present_section_nr(pnum)) - continue; - - map_map[nr_consumed_maps] = sparse_mem_map_populate(pnum, nodeid, NULL); - if (map_map[nr_consumed_maps++]) - continue; - pr_err("%s: sparsemem memory map backing failed some memory will not be available\n", - __func__); - } - - if (vmemmap_buf_start) { - /* need to free left buf */ - memblock_free_early(__pa(vmemmap_buf), - vmemmap_buf_end - vmemmap_buf); - vmemmap_buf = NULL; - vmemmap_buf_end = NULL; - } -} - struct page * __init sparse_populate_node(unsigned long pnum_begin, unsigned long pnum_end, unsigned long map_count, diff --git a/mm/sparse.c b/mm/sparse.c index c18d92b8ab9b..f6da0b07947b 100644 --- a/mm/sparse.c +++ b/mm/sparse.c @@ -200,11 +200,10 @@ static inline int next_present_section_nr(int section_nr) (section_nr <= __highest_present_section_nr)); \ section_nr = next_present_section_nr(section_nr)) -/* - * Record how many memory sections are marked as present - * during system bootup. - */ -static int __initdata nr_present_sections; +static inline unsigned long first_present_section_nr(void) +{ + return next_present_section_nr(-1); +} /* Record a memory area against a node. */ void __init memory_present(int nid, unsigned long start, unsigned long end) @@ -235,7 +234,6 @@ void __init memory_present(int nid, unsigned long start, unsigned long end) ms->section_mem_map = sparse_encode_early_nid(nid) | SECTION_IS_ONLINE; section_mark_present(ms); - nr_present_sections++; } } } @@ -377,34 +375,6 @@ static void __init check_usemap_section_nr(int nid, unsigned long *usemap) } #endif /* CONFIG_MEMORY_HOTREMOVE */ -static void __init sparse_early_usemaps_alloc_node(void *data, - unsigned long pnum_begin, - unsigned long pnum_end, - unsigned long usemap_count, int nodeid) -{ - void *usemap; - unsigned long pnum; - unsigned long **usemap_map = (unsigned long **)data; - int size = usemap_size(); - int nr_consumed_maps = 0; - - usemap = sparse_early_usemaps_alloc_pgdat_section(NODE_DATA(nodeid), - size * usemap_count); - if (!usemap) { - pr_warn("%s: allocation failed\n", __func__); - return; - } - - for (pnum = pnum_begin; pnum < pnum_end; pnum++) { - if (!present_section_nr(pnum)) - continue; - usemap_map[nr_consumed_maps] = usemap; - usemap += size; - check_usemap_section_nr(nodeid, usemap_map[nr_consumed_maps]); - nr_consumed_maps++; - } -} - #ifndef CONFIG_SPARSEMEM_VMEMMAP struct page __init *sparse_mem_map_populate(unsigned long pnum, int nid, struct vmem_altmap *altmap) @@ -418,44 +388,6 @@ struct page __init *sparse_mem_map_populate(unsigned long pnum, int nid, BOOTMEM_ALLOC_ACCESSIBLE, nid); return map; } -void __init sparse_mem_maps_populate_node(struct page **map_map, - unsigned long pnum_begin, - unsigned long pnum_end, - unsigned long map_count, int nodeid) -{ - void *map; - unsigned long pnum; - unsigned long size = sizeof(struct page) * PAGES_PER_SECTION; - int nr_consumed_maps; - - size = PAGE_ALIGN(size); - map = memblock_virt_alloc_try_nid_raw(size * map_count, - PAGE_SIZE, __pa(MAX_DMA_ADDRESS), - BOOTMEM_ALLOC_ACCESSIBLE, nodeid); - if (map) { - nr_consumed_maps = 0; - for (pnum = pnum_begin; pnum < pnum_end; pnum++) { - if (!present_section_nr(pnum)) - continue; - map_map[nr_consumed_maps] = map; - map += size; - nr_consumed_maps++; - } - return; - } - - /* fallback */ - nr_consumed_maps = 0; - for (pnum = pnum_begin; pnum < pnum_end; pnum++) { - if (!present_section_nr(pnum)) - continue; - map_map[nr_consumed_maps] = sparse_mem_map_populate(pnum, nodeid, NULL); - if (map_map[nr_consumed_maps++]) - continue; - pr_err("%s: sparsemem memory map backing failed some memory will not be available\n", - __func__); - } -} static unsigned long section_map_size(void) { @@ -495,73 +427,15 @@ struct page * __init sparse_populate_node_section(struct page *map_base, } #endif /* !CONFIG_SPARSEMEM_VMEMMAP */ -static void __init sparse_early_mem_maps_alloc_node(void *data, - unsigned long pnum_begin, - unsigned long pnum_end, - unsigned long map_count, int nodeid) -{ - struct page **map_map = (struct page **)data; - sparse_mem_maps_populate_node(map_map, pnum_begin, pnum_end, - map_count, nodeid); -} - void __weak __meminit vmemmap_populate_print_last(void) { } -/** - * alloc_usemap_and_memmap - memory alloction for pageblock flags and vmemmap - * @map: usemap_map for pageblock flags or mmap_map for vmemmap - * @unit_size: size of map unit - */ -static void __init alloc_usemap_and_memmap(void (*alloc_func) - (void *, unsigned long, unsigned long, - unsigned long, int), void *data, - int data_unit_size) -{ - unsigned long pnum; - unsigned long map_count; - int nodeid_begin = 0; - unsigned long pnum_begin = 0; - - for_each_present_section_nr(0, pnum) { - struct mem_section *ms; - - ms = __nr_to_section(pnum); - nodeid_begin = sparse_early_nid(ms); - pnum_begin = pnum; - break; - } - map_count = 1; - for_each_present_section_nr(pnum_begin + 1, pnum) { - struct mem_section *ms; - int nodeid; - - ms = __nr_to_section(pnum); - nodeid = sparse_early_nid(ms); - if (nodeid == nodeid_begin) { - map_count++; - continue; - } - /* ok, we need to take cake of from pnum_begin to pnum - 1*/ - alloc_func(data, pnum_begin, pnum, - map_count, nodeid_begin); - /* new start, update count etc*/ - nodeid_begin = nodeid; - pnum_begin = pnum; - data += map_count * data_unit_size; - map_count = 1; - } - /* ok, last chunk */ - alloc_func(data, pnum_begin, __highest_present_section_nr+1, - map_count, nodeid_begin); -} - /* * Initialize sparse on a specific node. The node spans [pnum_begin, pnum_end) * And number of present sections in this node is map_count. */ -void __init sparse_init_nid(int nid, unsigned long pnum_begin, +static void __init sparse_init_nid(int nid, unsigned long pnum_begin, unsigned long pnum_end, unsigned long map_count) { @@ -617,87 +491,27 @@ void __init sparse_init_nid(int nid, unsigned long pnum_begin, */ void __init sparse_init(void) { - unsigned long pnum; - struct page *map; - struct page **map_map; - unsigned long *usemap; - unsigned long **usemap_map; - int size, size2; - int nr_consumed_maps = 0; - - /* see include/linux/mmzone.h 'struct mem_section' definition */ - BUILD_BUG_ON(!is_power_of_2(sizeof(struct mem_section))); + unsigned long pnum_begin = first_present_section_nr(); + int nid_begin = sparse_early_nid(__nr_to_section(pnum_begin)); + unsigned long pnum_end, map_count = 1; /* Setup pageblock_order for HUGETLB_PAGE_SIZE_VARIABLE */ set_pageblock_order(); - /* - * map is using big page (aka 2M in x86 64 bit) - * usemap is less one page (aka 24 bytes) - * so alloc 2M (with 2M align) and 24 bytes in turn will - * make next 2M slip to one more 2M later. - * then in big system, the memory will have a lot of holes... - * here try to allocate 2M pages continuously. - * - * powerpc need to call sparse_init_one_section right after each - * sparse_early_mem_map_alloc, so allocate usemap_map at first. - */ - size = sizeof(unsigned long *) * nr_present_sections; - usemap_map = memblock_virt_alloc(size, 0); - if (!usemap_map) - panic("can not allocate usemap_map\n"); - alloc_usemap_and_memmap(sparse_early_usemaps_alloc_node, - (void *)usemap_map, - sizeof(usemap_map[0])); - - size2 = sizeof(struct page *) * nr_present_sections; - map_map = memblock_virt_alloc(size2, 0); - if (!map_map) - panic("can not allocate map_map\n"); - alloc_usemap_and_memmap(sparse_early_mem_maps_alloc_node, - (void *)map_map, - sizeof(map_map[0])); - - /* The numner of present sections stored in nr_present_sections - * are kept the same since mem sections are marked as present in - * memory_present(). In this for loop, we need check which sections - * failed to allocate memmap or usemap, then clear its - * ->section_mem_map accordingly. During this process, we need - * increase 'nr_consumed_maps' whether its allocation of memmap - * or usemap failed or not, so that after we handle the i-th - * memory section, can get memmap and usemap of (i+1)-th section - * correctly. */ - for_each_present_section_nr(0, pnum) { - struct mem_section *ms; - - if (nr_consumed_maps >= nr_present_sections) { - pr_err("nr_consumed_maps goes beyond nr_present_sections\n"); - break; - } - ms = __nr_to_section(pnum); - usemap = usemap_map[nr_consumed_maps]; - if (!usemap) { - ms->section_mem_map = 0; - nr_consumed_maps++; - continue; - } + for_each_present_section_nr(pnum_begin + 1, pnum_end) { + int nid = sparse_early_nid(__nr_to_section(pnum_end)); - map = map_map[nr_consumed_maps]; - if (!map) { - ms->section_mem_map = 0; - nr_consumed_maps++; + if (nid == nid_begin) { + map_count++; continue; } - - sparse_init_one_section(__nr_to_section(pnum), pnum, map, - usemap); - nr_consumed_maps++; + sparse_init_nid(nid_begin, pnum_begin, pnum_end, map_count); + nid_begin = nid; + pnum_begin = pnum_end; + map_count = 1; } - + sparse_init_nid(nid_begin, pnum_begin, pnum_end, map_count); vmemmap_populate_print_last(); - - memblock_free_early(__pa(map_map), size2); - memblock_free_early(__pa(usemap_map), size); } #ifdef CONFIG_MEMORY_HOTPLUG