| page_alloc.c (6bb154504f8b496780ec53ec81aba957a12981fa) | page_alloc.c (a921444382b49cc7fdeca3fba3e278bc09484a27) |
|---|---|
| 1/* 2 * linux/mm/page_alloc.c 3 * 4 * Manages the free list, the system allocates free pages here. 5 * Note that kmalloc() lives in slab.c 6 * 7 * Copyright (C) 1991, 1992, 1993, 1994 Linus Torvalds 8 * Swap reorganised 29.12.95, Stephen Tweedie --- 3362 unchanged lines hidden (view full) --- 3371 */ 3372 local_nid = zone_to_nid(ac->preferred_zoneref->zone); 3373 if (zone_to_nid(zone) != local_nid) { 3374 alloc_flags &= ~ALLOC_NOFRAGMENT; 3375 goto retry; 3376 } 3377 } 3378 | 1/* 2 * linux/mm/page_alloc.c 3 * 4 * Manages the free list, the system allocates free pages here. 5 * Note that kmalloc() lives in slab.c 6 * 7 * Copyright (C) 1991, 1992, 1993, 1994 Linus Torvalds 8 * Swap reorganised 29.12.95, Stephen Tweedie --- 3362 unchanged lines hidden (view full) --- 3371 */ 3372 local_nid = zone_to_nid(ac->preferred_zoneref->zone); 3373 if (zone_to_nid(zone) != local_nid) { 3374 alloc_flags &= ~ALLOC_NOFRAGMENT; 3375 goto retry; 3376 } 3377 } 3378 |
| 3379 mark = zone->watermark[alloc_flags & ALLOC_WMARK_MASK]; | 3379 mark = wmark_pages(zone, alloc_flags & ALLOC_WMARK_MASK); |
| 3380 if (!zone_watermark_fast(zone, order, mark, 3381 ac_classzone_idx(ac), alloc_flags)) { 3382 int ret; 3383 3384#ifdef CONFIG_DEFERRED_STRUCT_PAGE_INIT 3385 /* 3386 * Watermark failed for this zone, but see if we can 3387 * grow this zone if it contains deferred pages. --- 1400 unchanged lines hidden (view full) --- 4788 unsigned long reclaimable; 4789 struct zone *zone; 4790 int lru; 4791 4792 for (lru = LRU_BASE; lru < NR_LRU_LISTS; lru++) 4793 pages[lru] = global_node_page_state(NR_LRU_BASE + lru); 4794 4795 for_each_zone(zone) | 3380 if (!zone_watermark_fast(zone, order, mark, 3381 ac_classzone_idx(ac), alloc_flags)) { 3382 int ret; 3383 3384#ifdef CONFIG_DEFERRED_STRUCT_PAGE_INIT 3385 /* 3386 * Watermark failed for this zone, but see if we can 3387 * grow this zone if it contains deferred pages. --- 1400 unchanged lines hidden (view full) --- 4788 unsigned long reclaimable; 4789 struct zone *zone; 4790 int lru; 4791 4792 for (lru = LRU_BASE; lru < NR_LRU_LISTS; lru++) 4793 pages[lru] = global_node_page_state(NR_LRU_BASE + lru); 4794 4795 for_each_zone(zone) |
| 4796 wmark_low += zone->watermark[WMARK_LOW]; | 4796 wmark_low += low_wmark_pages(zone); |
| 4797 4798 /* 4799 * Estimate the amount of memory available for userspace allocations, 4800 * without causing swapping. 4801 */ 4802 available = global_zone_page_state(NR_FREE_PAGES) - totalreserve_pages; 4803 4804 /* --- 2621 unchanged lines hidden (view full) --- 7426 * The WMARK_HIGH-WMARK_LOW and (WMARK_LOW-WMARK_MIN) 7427 * deltas control asynch page reclaim, and so should 7428 * not be capped for highmem. 7429 */ 7430 unsigned long min_pages; 7431 7432 min_pages = zone_managed_pages(zone) / 1024; 7433 min_pages = clamp(min_pages, SWAP_CLUSTER_MAX, 128UL); | 4797 4798 /* 4799 * Estimate the amount of memory available for userspace allocations, 4800 * without causing swapping. 4801 */ 4802 available = global_zone_page_state(NR_FREE_PAGES) - totalreserve_pages; 4803 4804 /* --- 2621 unchanged lines hidden (view full) --- 7426 * The WMARK_HIGH-WMARK_LOW and (WMARK_LOW-WMARK_MIN) 7427 * deltas control asynch page reclaim, and so should 7428 * not be capped for highmem. 7429 */ 7430 unsigned long min_pages; 7431 7432 min_pages = zone_managed_pages(zone) / 1024; 7433 min_pages = clamp(min_pages, SWAP_CLUSTER_MAX, 128UL); |
| 7434 zone->watermark[WMARK_MIN] = min_pages; | 7434 zone->_watermark[WMARK_MIN] = min_pages; |
| 7435 } else { 7436 /* 7437 * If it's a lowmem zone, reserve a number of pages 7438 * proportionate to the zone's size. 7439 */ | 7435 } else { 7436 /* 7437 * If it's a lowmem zone, reserve a number of pages 7438 * proportionate to the zone's size. 7439 */ |
| 7440 zone->watermark[WMARK_MIN] = tmp; | 7440 zone->_watermark[WMARK_MIN] = tmp; |
| 7441 } 7442 7443 /* 7444 * Set the kswapd watermarks distance according to the 7445 * scale factor in proportion to available memory, but 7446 * ensure a minimum size on small systems. 7447 */ 7448 tmp = max_t(u64, tmp >> 2, 7449 mult_frac(zone_managed_pages(zone), 7450 watermark_scale_factor, 10000)); 7451 | 7441 } 7442 7443 /* 7444 * Set the kswapd watermarks distance according to the 7445 * scale factor in proportion to available memory, but 7446 * ensure a minimum size on small systems. 7447 */ 7448 tmp = max_t(u64, tmp >> 2, 7449 mult_frac(zone_managed_pages(zone), 7450 watermark_scale_factor, 10000)); 7451 |
| 7452 zone->watermark[WMARK_LOW] = min_wmark_pages(zone) + tmp; 7453 zone->watermark[WMARK_HIGH] = min_wmark_pages(zone) + tmp * 2; | 7452 zone->_watermark[WMARK_LOW] = min_wmark_pages(zone) + tmp; 7453 zone->_watermark[WMARK_HIGH] = min_wmark_pages(zone) + tmp * 2; |
| 7454 7455 spin_unlock_irqrestore(&zone->lock, flags); 7456 } 7457 7458 /* update totalreserve_pages */ 7459 calculate_totalreserve_pages(); 7460} 7461 --- 858 unchanged lines hidden --- | 7454 7455 spin_unlock_irqrestore(&zone->lock, flags); 7456 } 7457 7458 /* update totalreserve_pages */ 7459 calculate_totalreserve_pages(); 7460} 7461 --- 858 unchanged lines hidden --- |