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Violators will be prosecuted; (version=TLSv1/SSLv3 cipher=AES256-GCM-SHA384 bits=256/256) Wed, 5 Sep 2018 16:59:51 +0100 Received: from d06av21.portsmouth.uk.ibm.com (d06av21.portsmouth.uk.ibm.com [9.149.105.232]) by b06cxnps4075.portsmouth.uk.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id w85FxoXL42860708 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=FAIL); Wed, 5 Sep 2018 15:59:51 GMT Received: from d06av21.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 612D65206D; Wed, 5 Sep 2018 18:59:43 +0100 (BST) Received: from rapoport-lnx (unknown [9.148.8.92]) by d06av21.portsmouth.uk.ibm.com (Postfix) with ESMTPS id 4584F52050; Wed, 5 Sep 2018 18:59:41 +0100 (BST) Received: by rapoport-lnx (sSMTP sendmail emulation); Wed, 05 Sep 2018 18:59:48 +0300 From: Mike Rapoport To: linux-mm@kvack.org Cc: Andrew Morton , "David S. Miller" , Greg Kroah-Hartman , Ingo Molnar , Michael Ellerman , Michal Hocko , 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, Mike Rapoport Subject: [RFC PATCH 01/29] mips: switch to NO_BOOTMEM Date: Wed, 5 Sep 2018 18:59:16 +0300 X-Mailer: git-send-email 2.7.4 In-Reply-To: <1536163184-26356-1-git-send-email-rppt@linux.vnet.ibm.com> References: <1536163184-26356-1-git-send-email-rppt@linux.vnet.ibm.com> X-TM-AS-GCONF: 00 x-cbid: 18090515-4275-0000-0000-000002B5BD07 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 18090515-4276-0000-0000-000037BED7B1 Message-Id: <1536163184-26356-2-git-send-email-rppt@linux.vnet.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:,, definitions=2018-09-05_09:,, signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 malwarescore=0 suspectscore=3 phishscore=0 bulkscore=0 spamscore=0 clxscore=1015 lowpriorityscore=0 mlxscore=0 impostorscore=0 mlxlogscore=999 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1807170000 definitions=main-1809050164 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 MIPS already has memblock support and all the memory is already registered with it. This patch replaces bootmem memory reservations with memblock ones and removes the bootmem initialization. Signed-off-by: Mike Rapoport --- arch/mips/Kconfig | 1 + arch/mips/kernel/setup.c | 91 ++++++---------------------------- arch/mips/loongson64/loongson-3/numa.c | 34 ++++++------- arch/mips/sgi-ip27/ip27-memory.c | 11 ++-- 4 files changed, 35 insertions(+), 102 deletions(-) diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig index 1a119fd..f744d25 100644 --- a/arch/mips/Kconfig +++ b/arch/mips/Kconfig @@ -78,6 +78,7 @@ config MIPS select RTC_LIB if !MACH_LOONGSON64 select SYSCTL_EXCEPTION_TRACE select VIRT_TO_BUS + select NO_BOOTMEM menu "Machine selection" diff --git a/arch/mips/kernel/setup.c b/arch/mips/kernel/setup.c index 32fc11d..08f8251 100644 --- a/arch/mips/kernel/setup.c +++ b/arch/mips/kernel/setup.c @@ -333,7 +333,7 @@ static void __init finalize_initrd(void) maybe_bswap_initrd(); - reserve_bootmem(__pa(initrd_start), size, BOOTMEM_DEFAULT); + memblock_reserve(__pa(initrd_start), size); initrd_below_start_ok = 1; pr_info("Initial ramdisk at: 0x%lx (%lu bytes)\n", @@ -370,20 +370,10 @@ static void __init bootmem_init(void) #else /* !CONFIG_SGI_IP27 */ -static unsigned long __init bootmap_bytes(unsigned long pages) -{ - unsigned long bytes = DIV_ROUND_UP(pages, 8); - - return ALIGN(bytes, sizeof(long)); -} - static void __init bootmem_init(void) { unsigned long reserved_end; - unsigned long mapstart = ~0UL; - unsigned long bootmap_size; phys_addr_t ramstart = PHYS_ADDR_MAX; - bool bootmap_valid = false; int i; /* @@ -395,6 +385,8 @@ static void __init bootmem_init(void) init_initrd(); reserved_end = (unsigned long) PFN_UP(__pa_symbol(&_end)); + memblock_reserve(PHYS_OFFSET, reserved_end << PAGE_SHIFT); + /* * max_low_pfn is not a number of pages. The number of pages * of the system is given by 'max_low_pfn - min_low_pfn'. @@ -442,9 +434,6 @@ static void __init bootmem_init(void) if (initrd_end && end <= (unsigned long)PFN_UP(__pa(initrd_end))) continue; #endif - if (start >= mapstart) - continue; - mapstart = max(reserved_end, start); } if (min_low_pfn >= max_low_pfn) @@ -456,9 +445,11 @@ static void __init bootmem_init(void) /* * Reserve any memory between the start of RAM and PHYS_OFFSET */ - if (ramstart > PHYS_OFFSET) + if (ramstart > PHYS_OFFSET) { add_memory_region(PHYS_OFFSET, ramstart - PHYS_OFFSET, BOOT_MEM_RESERVED); + memblock_reserve(PHYS_OFFSET, ramstart - PHYS_OFFSET); + } if (min_low_pfn > ARCH_PFN_OFFSET) { pr_info("Wasting %lu bytes for tracking %lu unused pages\n", @@ -483,52 +474,6 @@ static void __init bootmem_init(void) max_low_pfn = PFN_DOWN(HIGHMEM_START); } -#ifdef CONFIG_BLK_DEV_INITRD - /* - * mapstart should be after initrd_end - */ - if (initrd_end) - mapstart = max(mapstart, (unsigned long)PFN_UP(__pa(initrd_end))); -#endif - - /* - * check that mapstart doesn't overlap with any of - * memory regions that have been reserved through eg. DTB - */ - bootmap_size = bootmap_bytes(max_low_pfn - min_low_pfn); - - bootmap_valid = memory_region_available(PFN_PHYS(mapstart), - bootmap_size); - for (i = 0; i < boot_mem_map.nr_map && !bootmap_valid; i++) { - unsigned long mapstart_addr; - - switch (boot_mem_map.map[i].type) { - case BOOT_MEM_RESERVED: - mapstart_addr = PFN_ALIGN(boot_mem_map.map[i].addr + - boot_mem_map.map[i].size); - if (PHYS_PFN(mapstart_addr) < mapstart) - break; - - bootmap_valid = memory_region_available(mapstart_addr, - bootmap_size); - if (bootmap_valid) - mapstart = PHYS_PFN(mapstart_addr); - break; - default: - break; - } - } - - if (!bootmap_valid) - panic("No memory area to place a bootmap bitmap"); - - /* - * Initialize the boot-time allocator with low memory only. - */ - if (bootmap_size != init_bootmem_node(NODE_DATA(0), mapstart, - min_low_pfn, max_low_pfn)) - panic("Unexpected memory size required for bootmap"); - for (i = 0; i < boot_mem_map.nr_map; i++) { unsigned long start, end; @@ -577,9 +522,9 @@ static void __init bootmem_init(void) default: /* Not usable memory */ if (start > min_low_pfn && end < max_low_pfn) - reserve_bootmem(boot_mem_map.map[i].addr, - boot_mem_map.map[i].size, - BOOTMEM_DEFAULT); + memblock_reserve(boot_mem_map.map[i].addr, + boot_mem_map.map[i].size); + continue; } @@ -602,15 +547,9 @@ static void __init bootmem_init(void) size = end - start; /* Register lowmem ranges */ - free_bootmem(PFN_PHYS(start), size << PAGE_SHIFT); memory_present(0, start, end); } - /* - * Reserve the bootmap memory. - */ - reserve_bootmem(PFN_PHYS(mapstart), bootmap_size, BOOTMEM_DEFAULT); - #ifdef CONFIG_RELOCATABLE /* * The kernel reserves all memory below its _end symbol as bootmem, @@ -638,6 +577,8 @@ static void __init bootmem_init(void) * Reserve initrd memory if needed. */ finalize_initrd(); + + memblock_set_bottom_up(true); } #endif /* CONFIG_SGI_IP27 */ @@ -911,17 +852,15 @@ static void __init arch_mem_init(char **cmdline_p) if (setup_elfcorehdr && setup_elfcorehdr_size) { printk(KERN_INFO "kdump reserved memory at %lx-%lx\n", setup_elfcorehdr, setup_elfcorehdr_size); - reserve_bootmem(setup_elfcorehdr, setup_elfcorehdr_size, - BOOTMEM_DEFAULT); + memblock_reserve(setup_elfcorehdr, setup_elfcorehdr_size); } #endif mips_parse_crashkernel(); #ifdef CONFIG_KEXEC if (crashk_res.start != crashk_res.end) - reserve_bootmem(crashk_res.start, - crashk_res.end - crashk_res.start + 1, - BOOTMEM_DEFAULT); + memblock_reserve(crashk_res.start, + crashk_res.end - crashk_res.start + 1); #endif device_tree_init(); sparse_init(); @@ -931,7 +870,7 @@ static void __init arch_mem_init(char **cmdline_p) /* Tell bootmem about cma reserved memblock section */ for_each_memblock(reserved, reg) if (reg->size != 0) - reserve_bootmem(reg->base, reg->size, BOOTMEM_DEFAULT); + memblock_reserve(reg->base, reg->size); reserve_bootmem_region(__pa_symbol(&__nosave_begin), __pa_symbol(&__nosave_end)); /* Reserve for hibernation */ diff --git a/arch/mips/loongson64/loongson-3/numa.c b/arch/mips/loongson64/loongson-3/numa.c index 9717106..c1e6ec5 100644 --- a/arch/mips/loongson64/loongson-3/numa.c +++ b/arch/mips/loongson64/loongson-3/numa.c @@ -180,43 +180,39 @@ static void __init szmem(unsigned int node) static void __init node_mem_init(unsigned int node) { - unsigned long bootmap_size; unsigned long node_addrspace_offset; - unsigned long start_pfn, end_pfn, freepfn; + unsigned long start_pfn, end_pfn; node_addrspace_offset = nid_to_addroffset(node); pr_info("Node%d's addrspace_offset is 0x%lx\n", node, node_addrspace_offset); get_pfn_range_for_nid(node, &start_pfn, &end_pfn); - freepfn = start_pfn; - if (node == 0) - freepfn = PFN_UP(__pa_symbol(&_end)); /* kernel end address */ - pr_info("Node%d: start_pfn=0x%lx, end_pfn=0x%lx, freepfn=0x%lx\n", - node, start_pfn, end_pfn, freepfn); + pr_info("Node%d: start_pfn=0x%lx, end_pfn=0x%lx\n", + node, start_pfn, end_pfn); __node_data[node] = prealloc__node_data + node; - NODE_DATA(node)->bdata = &bootmem_node_data[node]; NODE_DATA(node)->node_start_pfn = start_pfn; NODE_DATA(node)->node_spanned_pages = end_pfn - start_pfn; - bootmap_size = init_bootmem_node(NODE_DATA(node), freepfn, - start_pfn, end_pfn); free_bootmem_with_active_regions(node, end_pfn); - if (node == 0) /* used by finalize_initrd() */ + + if (node == 0) { + /* kernel end address */ + unsigned long kernel_end_pfn = PFN_UP(__pa_symbol(&_end)); + + /* used by finalize_initrd() */ max_low_pfn = end_pfn; - /* This is reserved for the kernel and bdata->node_bootmem_map */ - reserve_bootmem_node(NODE_DATA(node), start_pfn << PAGE_SHIFT, - ((freepfn - start_pfn) << PAGE_SHIFT) + bootmap_size, - BOOTMEM_DEFAULT); + /* Reserve the kernel text/data/bss */ + memblock_reserve(start_pfn << PAGE_SHIFT, + ((kernel_end_pfn - start_pfn) << PAGE_SHIFT)); - if (node == 0 && node_end_pfn(0) >= (0xffffffff >> PAGE_SHIFT)) { /* Reserve 0xfe000000~0xffffffff for RS780E integrated GPU */ - reserve_bootmem_node(NODE_DATA(node), - (node_addrspace_offset | 0xfe000000), - 32 << 20, BOOTMEM_DEFAULT); + if (node_end_pfn(0) >= (0xffffffff >> PAGE_SHIFT)) + memblock_reserve((node_addrspace_offset | 0xfe000000), + 32 << 20); } sparse_memory_present_with_active_regions(node); diff --git a/arch/mips/sgi-ip27/ip27-memory.c b/arch/mips/sgi-ip27/ip27-memory.c index 59133d0a..6f7bef0 100644 --- a/arch/mips/sgi-ip27/ip27-memory.c +++ b/arch/mips/sgi-ip27/ip27-memory.c @@ -389,7 +389,6 @@ static void __init node_mem_init(cnodeid_t node) { unsigned long slot_firstpfn = slot_getbasepfn(node, 0); unsigned long slot_freepfn = node_getfirstfree(node); - unsigned long bootmap_size; unsigned long start_pfn, end_pfn; get_pfn_range_for_nid(node, &start_pfn, &end_pfn); @@ -400,7 +399,6 @@ static void __init node_mem_init(cnodeid_t node) __node_data[node] = __va(slot_freepfn << PAGE_SHIFT); memset(__node_data[node], 0, PAGE_SIZE); - NODE_DATA(node)->bdata = &bootmem_node_data[node]; NODE_DATA(node)->node_start_pfn = start_pfn; NODE_DATA(node)->node_spanned_pages = end_pfn - start_pfn; @@ -409,12 +407,11 @@ static void __init node_mem_init(cnodeid_t node) slot_freepfn += PFN_UP(sizeof(struct pglist_data) + sizeof(struct hub_data)); - bootmap_size = init_bootmem_node(NODE_DATA(node), slot_freepfn, - start_pfn, end_pfn); free_bootmem_with_active_regions(node, end_pfn); - reserve_bootmem_node(NODE_DATA(node), slot_firstpfn << PAGE_SHIFT, - ((slot_freepfn - slot_firstpfn) << PAGE_SHIFT) + bootmap_size, - BOOTMEM_DEFAULT); + + memblock_reserve(slot_firstpfn << PAGE_SHIFT, + ((slot_freepfn - slot_firstpfn) << PAGE_SHIFT)); + sparse_memory_present_with_active_regions(node); }