/* * linux/mm/page_isolation.c */ #include #include #include #include "internal.h" static inline struct page * __first_valid_page(unsigned long pfn, unsigned long nr_pages) { int i; for (i = 0; i < nr_pages; i++) if (pfn_valid_within(pfn + i)) break; if (unlikely(i == nr_pages)) return NULL; return pfn_to_page(pfn + i); } /* * start_isolate_page_range() -- make page-allocation-type of range of pages * to be MIGRATE_ISOLATE. * @start_pfn: The lower PFN of the range to be isolated. * @end_pfn: The upper PFN of the range to be isolated. * * Making page-allocation-type to be MIGRATE_ISOLATE means free pages in * the range will never be allocated. Any free pages and pages freed in the * future will not be allocated again. * * start_pfn/end_pfn must be aligned to pageblock_order. * Returns 0 on success and -EBUSY if any part of range cannot be isolated. */ int start_isolate_page_range(unsigned long start_pfn, unsigned long end_pfn) { unsigned long pfn; unsigned long undo_pfn; struct page *page; BUG_ON((start_pfn) & (pageblock_nr_pages - 1)); BUG_ON((end_pfn) & (pageblock_nr_pages - 1)); for (pfn = start_pfn; pfn < end_pfn; pfn += pageblock_nr_pages) { page = __first_valid_page(pfn, pageblock_nr_pages); if (page && set_migratetype_isolate(page)) { undo_pfn = pfn; goto undo; } } return 0; undo: for (pfn = start_pfn; pfn < undo_pfn; pfn += pageblock_nr_pages) unset_migratetype_isolate(pfn_to_page(pfn)); return -EBUSY; } /* * Make isolated pages available again. */ int undo_isolate_page_range(unsigned long start_pfn, unsigned long end_pfn) { unsigned long pfn; struct page *page; BUG_ON((start_pfn) & (pageblock_nr_pages - 1)); BUG_ON((end_pfn) & (pageblock_nr_pages - 1)); for (pfn = start_pfn; pfn < end_pfn; pfn += pageblock_nr_pages) { page = __first_valid_page(pfn, pageblock_nr_pages); if (!page || get_pageblock_migratetype(page) != MIGRATE_ISOLATE) continue; unset_migratetype_isolate(page); } return 0; } /* * Test all pages in the range is free(means isolated) or not. * all pages in [start_pfn...end_pfn) must be in the same zone. * zone->lock must be held before call this. * * Returns 1 if all pages in the range is isolated. */ static int __test_page_isolated_in_pageblock(unsigned long pfn, unsigned long end_pfn) { struct page *page; while (pfn < end_pfn) { if (!pfn_valid_within(pfn)) { pfn++; continue; } page = pfn_to_page(pfn); if (PageBuddy(page)) pfn += 1 << page_order(page); else if (page_count(page) == 0 && page_private(page) == MIGRATE_ISOLATE) pfn += 1; else break; } if (pfn < end_pfn) return 0; return 1; } int test_pages_isolated(unsigned long start_pfn, unsigned long end_pfn) { unsigned long pfn, flags; struct page *page; struct zone *zone; int ret; /* * Note: pageblock_nr_page != MAX_ORDER. Then, chunks of free page * is not aligned to pageblock_nr_pages. * Then we just check pagetype fist. */ for (pfn = start_pfn; pfn < end_pfn; pfn += pageblock_nr_pages) { page = __first_valid_page(pfn, pageblock_nr_pages); if (page && get_pageblock_migratetype(page) != MIGRATE_ISOLATE) break; } page = __first_valid_page(start_pfn, end_pfn - start_pfn); if ((pfn < end_pfn) || !page) return -EBUSY; /* Check all pages are free or Marked as ISOLATED */ zone = page_zone(page); spin_lock_irqsave(&zone->lock, flags); ret = __test_page_isolated_in_pageblock(start_pfn, end_pfn); spin_unlock_irqrestore(&zone->lock, flags); return ret ? 0 : -EBUSY; } option value='CI/2022-04-23-binman-updates'>CI/2022-04-23-binman-updates mirror/u-boot.git
aboutsummaryrefslogtreecommitdiffstats
path: root/configs/usbarmory_defconfig
blob: a0cb3e93bbc98cf578dfa657881a18878ed68546 (plain) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23

CONFIG_ARM=y
CONFIG_ARCH_MX5=y
CONFIG_SYS_TEXT_BASE=0x77800000
CONFIG_TARGET_USBARMORY=y
CONFIG_ENV_SIZE=0x2000
CONFIG_ENV_OFFSET=0x60000
CONFIG_NR_DRAM_BANKS=1
# CONFIG_CMD_BMODE is not set
CONFIG_DISTRO_DEFAULTS=y
# CONFIG_USE_BOOTCOMMAND is not set
CONFIG_CMD_MEMTEST=y
CONFIG_CMD_FUSE=y
CONFIG_CMD_I2C=y
CONFIG_CMD_MMC=y
CONFIG_CMD_USB=y
# CONFIG_CMD_SETEXPR is not set
CONFIG_ENV_IS_IN_MMC=y
CONFIG_SYS_RELOC_GD_ENV_ADDR=y
CONFIG_FSL_ESDHC_IMX=y
CONFIG_MTD=y
CONFIG_USB=y
CONFIG_USB_EHCI_MX5=y
CONFIG_OF_LIBFDT=y
generated by cgit (git 2.34.1) at 2025-03-01 02:05:01 +0000