Hi Pavel, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on mmotm/master] [also build test WARNING on next-20180209] [cannot apply to v4.15] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system] url: https://github.com/0day-ci/linux/commits/Pavel-Tatashin/mm-initialize-pages-on-demand-during-boot/20180210-125104 base: git://git.cmpxchg.org/linux-mmotm.git master config: i386-randconfig-x018-201805 (attached as .config) compiler: gcc-7 (Debian 7.3.0-1) 7.3.0 reproduce: # save the attached .config to linux build tree make ARCH=i386 All warnings (new ones prefixed by >>): In file included from include/asm-generic/bug.h:18:0, from arch/x86/include/asm/bug.h:82, from include/linux/bug.h:5, from include/linux/mmdebug.h:5, from include/linux/mm.h:9, from mm/page_alloc.c:18: mm/page_alloc.c: In function 'free_area_init_node': include/linux/kernel.h:792:16: warning: comparison of distinct pointer types lacks a cast (void) (&min1 == &min2); \ ^ include/linux/kernel.h:801:2: note: in expansion of macro '__min' __min(typeof(x), typeof(y), \ ^~~~~ >> mm/page_alloc.c:6357:29: note: in expansion of macro 'min' pgdat->static_init_pgcnt = min(PAGES_PER_SECTION, ^~~ vim +/min +6357 mm/page_alloc.c 6325 6326 void __paginginit free_area_init_node(int nid, unsigned long *zones_size, 6327 unsigned long node_start_pfn, unsigned long *zholes_size) 6328 { 6329 pg_data_t *pgdat = NODE_DATA(nid); 6330 unsigned long start_pfn = 0; 6331 unsigned long end_pfn = 0; 6332 6333 /* pg_data_t should be reset to zero when it's allocated */ 6334 WARN_ON(pgdat->nr_zones || pgdat->kswapd_classzone_idx); 6335 6336 pgdat->node_id = nid; 6337 pgdat->node_start_pfn = node_start_pfn; 6338 pgdat->per_cpu_nodestats = NULL; 6339 #ifdef CONFIG_HAVE_MEMBLOCK_NODE_MAP 6340 get_pfn_range_for_nid(nid, &start_pfn, &end_pfn); 6341 pr_info("Initmem setup node %d [mem %#018Lx-%#018Lx]\n", nid, 6342 (u64)start_pfn << PAGE_SHIFT, 6343 end_pfn ? ((u64)end_pfn << PAGE_SHIFT) - 1 : 0); 6344 #else 6345 start_pfn = node_start_pfn; 6346 #endif 6347 calculate_node_totalpages(pgdat, start_pfn, end_pfn, 6348 zones_size, zholes_size); 6349 6350 alloc_node_mem_map(pgdat); 6351 6352 #ifdef CONFIG_DEFERRED_STRUCT_PAGE_INIT 6353 /* 6354 * We start only with one section of pages, more pages are added as 6355 * needed until the rest of deferred pages are initialized. 6356 */ > 6357 pgdat->static_init_pgcnt = min(PAGES_PER_SECTION, 6358 pgdat->node_spanned_pages); 6359 pgdat->first_deferred_pfn = ULONG_MAX; 6360 #endif 6361 free_area_init_core(pgdat); 6362 } 6363 --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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