| Message ID | 1493887815-6070-5-git-send-email-wei.w.wang@intel.com |
|---|---|
| State | New |
| Headers | show |
Hi Wei, [auto build test WARNING on linus/master] [also build test WARNING on v4.11 next-20170504] [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/Wei-Wang/Extend-virtio-balloon-for-fast-de-inflating-fast-live-migration/20170505-052958 reproduce: make htmldocs All warnings (new ones prefixed by >>): WARNING: convert(1) not found, for SVG to PDF conversion install ImageMagick (https://www.imagemagick.org) arch/x86/include/asm/uaccess_32.h:1: warning: no structured comments found >> mm/page_alloc.c:4663: warning: No description found for parameter 'zone' >> mm/page_alloc.c:4663: warning: No description found for parameter 'order' >> mm/page_alloc.c:4663: warning: No description found for parameter 'migratetype' >> mm/page_alloc.c:4663: warning: No description found for parameter 'page' include/net/cfg80211.h:1738: warning: No description found for parameter 'report_results' include/net/cfg80211.h:1738: warning: Excess struct/union/enum/typedef member 'results_wk' description in 'cfg80211_sched_scan_request' include/net/cfg80211.h:1738: warning: No description found for parameter 'report_results' include/net/cfg80211.h:1738: warning: Excess struct/union/enum/typedef member 'results_wk' description in 'cfg80211_sched_scan_request' include/net/cfg80211.h:1738: warning: No description found for parameter 'report_results' include/net/cfg80211.h:1738: warning: Excess struct/union/enum/typedef member 'results_wk' description in 'cfg80211_sched_scan_request' include/net/cfg80211.h:1738: warning: No description found for parameter 'report_results' include/net/cfg80211.h:1738: warning: Excess struct/union/enum/typedef member 'results_wk' description in 'cfg80211_sched_scan_request' include/net/cfg80211.h:1738: warning: No description found for parameter 'report_results' include/net/cfg80211.h:1738: warning: Excess struct/union/enum/typedef member 'results_wk' description in 'cfg80211_sched_scan_request' include/net/cfg80211.h:1738: warning: No description found for parameter 'report_results' include/net/cfg80211.h:1738: warning: Excess struct/union/enum/typedef member 'results_wk' description in 'cfg80211_sched_scan_request' include/net/cfg80211.h:1738: warning: No description found for parameter 'report_results' include/net/cfg80211.h:1738: warning: Excess struct/union/enum/typedef member 'results_wk' description in 'cfg80211_sched_scan_request' include/net/cfg80211.h:1738: warning: No description found for parameter 'report_results' include/net/cfg80211.h:1738: warning: Excess struct/union/enum/typedef member 'results_wk' description in 'cfg80211_sched_scan_request' include/net/cfg80211.h:1738: warning: No description found for parameter 'report_results' include/net/cfg80211.h:1738: warning: Excess struct/union/enum/typedef member 'results_wk' description in 'cfg80211_sched_scan_request' include/net/cfg80211.h:1738: warning: No description found for parameter 'report_results' include/net/cfg80211.h:1738: warning: Excess struct/union/enum/typedef member 'results_wk' description in 'cfg80211_sched_scan_request' include/net/cfg80211.h:1738: warning: No description found for parameter 'report_results' include/net/cfg80211.h:1738: warning: Excess struct/union/enum/typedef member 'results_wk' description in 'cfg80211_sched_scan_request' include/net/cfg80211.h:1738: warning: No description found for parameter 'report_results' include/net/cfg80211.h:1738: warning: Excess struct/union/enum/typedef member 'results_wk' description in 'cfg80211_sched_scan_request' include/net/cfg80211.h:1738: warning: No description found for parameter 'report_results' include/net/cfg80211.h:1738: warning: Excess struct/union/enum/typedef member 'results_wk' description in 'cfg80211_sched_scan_request' include/net/cfg80211.h:1738: warning: No description found for parameter 'report_results' include/net/cfg80211.h:1738: warning: Excess struct/union/enum/typedef member 'results_wk' description in 'cfg80211_sched_scan_request' include/net/cfg80211.h:1738: warning: No description found for parameter 'report_results' include/net/cfg80211.h:1738: warning: Excess struct/union/enum/typedef member 'results_wk' description in 'cfg80211_sched_scan_request' include/net/cfg80211.h:1738: warning: No description found for parameter 'report_results' include/net/cfg80211.h:1738: warning: Excess struct/union/enum/typedef member 'results_wk' description in 'cfg80211_sched_scan_request' include/net/cfg80211.h:1738: warning: No description found for parameter 'report_results' include/net/cfg80211.h:1738: warning: Excess struct/union/enum/typedef member 'results_wk' description in 'cfg80211_sched_scan_request' include/net/cfg80211.h:1738: warning: No description found for parameter 'report_results' include/net/cfg80211.h:1738: warning: Excess struct/union/enum/typedef member 'results_wk' description in 'cfg80211_sched_scan_request' include/net/cfg80211.h:1738: warning: No description found for parameter 'report_results' include/net/cfg80211.h:1738: warning: Excess struct/union/enum/typedef member 'results_wk' description in 'cfg80211_sched_scan_request' include/net/cfg80211.h:1738: warning: No description found for parameter 'report_results' include/net/cfg80211.h:1738: warning: Excess struct/union/enum/typedef member 'results_wk' description in 'cfg80211_sched_scan_request' include/net/cfg80211.h:1738: warning: No description found for parameter 'report_results' include/net/cfg80211.h:1738: warning: Excess struct/union/enum/typedef member 'results_wk' description in 'cfg80211_sched_scan_request' include/net/cfg80211.h:1738: warning: No description found for parameter 'report_results' include/net/cfg80211.h:1738: warning: Excess struct/union/enum/typedef member 'results_wk' description in 'cfg80211_sched_scan_request' include/net/cfg80211.h:1738: warning: No description found for parameter 'report_results' include/net/cfg80211.h:1738: warning: Excess struct/union/enum/typedef member 'results_wk' description in 'cfg80211_sched_scan_request' include/net/cfg80211.h:1738: warning: No description found for parameter 'report_results' include/net/cfg80211.h:1738: warning: Excess struct/union/enum/typedef member 'results_wk' description in 'cfg80211_sched_scan_request' include/net/cfg80211.h:1738: warning: No description found for parameter 'report_results' include/net/cfg80211.h:1738: warning: Excess struct/union/enum/typedef member 'results_wk' description in 'cfg80211_sched_scan_request' include/net/cfg80211.h:1738: warning: No description found for parameter 'report_results' include/net/cfg80211.h:1738: warning: Excess struct/union/enum/typedef member 'results_wk' description in 'cfg80211_sched_scan_request' include/net/cfg80211.h:1738: warning: No description found for parameter 'report_results' include/net/cfg80211.h:1738: warning: Excess struct/union/enum/typedef member 'results_wk' description in 'cfg80211_sched_scan_request' include/net/cfg80211.h:1738: warning: No description found for parameter 'report_results' include/net/cfg80211.h:1738: warning: Excess struct/union/enum/typedef member 'results_wk' description in 'cfg80211_sched_scan_request' include/net/cfg80211.h:1738: warning: No description found for parameter 'report_results' include/net/cfg80211.h:1738: warning: Excess struct/union/enum/typedef member 'results_wk' description in 'cfg80211_sched_scan_request' include/net/cfg80211.h:1738: warning: No description found for parameter 'report_results' include/net/cfg80211.h:1738: warning: Excess struct/union/enum/typedef member 'results_wk' description in 'cfg80211_sched_scan_request' include/net/cfg80211.h:1738: warning: No description found for parameter 'report_results' include/net/cfg80211.h:1738: warning: Excess struct/union/enum/typedef member 'results_wk' description in 'cfg80211_sched_scan_request' include/net/cfg80211.h:1738: warning: No description found for parameter 'report_results' include/net/cfg80211.h:1738: warning: Excess struct/union/enum/typedef member 'results_wk' description in 'cfg80211_sched_scan_request' include/net/cfg80211.h:1738: warning: No description found for parameter 'report_results' include/net/cfg80211.h:1738: warning: Excess struct/union/enum/typedef member 'results_wk' description in 'cfg80211_sched_scan_request' include/net/cfg80211.h:1738: warning: No description found for parameter 'report_results' include/net/cfg80211.h:1738: warning: Excess struct/union/enum/typedef member 'results_wk' description in 'cfg80211_sched_scan_request' include/net/cfg80211.h:1738: warning: No description found for parameter 'report_results' include/net/cfg80211.h:1738: warning: Excess struct/union/enum/typedef member 'results_wk' description in 'cfg80211_sched_scan_request' include/net/cfg80211.h:1738: warning: No description found for parameter 'report_results' include/net/cfg80211.h:1738: warning: Excess struct/union/enum/typedef member 'results_wk' description in 'cfg80211_sched_scan_request' include/net/cfg80211.h:1738: warning: No description found for parameter 'report_results' include/net/cfg80211.h:1738: warning: Excess struct/union/enum/typedef member 'results_wk' description in 'cfg80211_sched_scan_request' include/net/cfg80211.h:1738: warning: No description found for parameter 'report_results' include/net/cfg80211.h:1738: warning: Excess struct/union/enum/typedef member 'results_wk' description in 'cfg80211_sched_scan_request' include/net/cfg80211.h:1738: warning: No description found for parameter 'report_results' include/net/cfg80211.h:1738: warning: Excess struct/union/enum/typedef member 'results_wk' description in 'cfg80211_sched_scan_request' include/net/cfg80211.h:1738: warning: No description found for parameter 'report_results' include/net/cfg80211.h:1738: warning: Excess struct/union/enum/typedef member 'results_wk' description in 'cfg80211_sched_scan_request' include/net/cfg80211.h:1738: warning: No description found for parameter 'report_results' include/net/cfg80211.h:1738: warning: Excess struct/union/enum/typedef member 'results_wk' description in 'cfg80211_sched_scan_request' include/net/cfg80211.h:1738: warning: No description found for parameter 'report_results' include/net/cfg80211.h:1738: warning: Excess struct/union/enum/typedef member 'results_wk' description in 'cfg80211_sched_scan_request' include/net/cfg80211.h:1738: warning: No description found for parameter 'report_results' include/net/cfg80211.h:1738: warning: Excess struct/union/enum/typedef member 'results_wk' description in 'cfg80211_sched_scan_request' include/net/cfg80211.h:1738: warning: No description found for parameter 'report_results' include/net/cfg80211.h:1738: warning: Excess struct/union/enum/typedef member 'results_wk' description in 'cfg80211_sched_scan_request' include/net/cfg80211.h:1738: warning: No description found for parameter 'report_results' include/net/cfg80211.h:1738: warning: Excess struct/union/enum/typedef member 'results_wk' description in 'cfg80211_sched_scan_request' include/net/cfg80211.h:1738: warning: No description found for parameter 'report_results' include/net/cfg80211.h:1738: warning: Excess struct/union/enum/typedef member 'results_wk' description in 'cfg80211_sched_scan_request' include/net/cfg80211.h:1738: warning: No description found for parameter 'report_results' include/net/cfg80211.h:1738: warning: Excess struct/union/enum/typedef member 'results_wk' description in 'cfg80211_sched_scan_request' include/net/cfg80211.h:1738: warning: No description found for parameter 'report_results' include/net/cfg80211.h:1738: warning: Excess struct/union/enum/typedef member 'results_wk' description in 'cfg80211_sched_scan_request' include/net/cfg80211.h:1738: warning: No description found for parameter 'report_results' include/net/cfg80211.h:1738: warning: Excess struct/union/enum/typedef member 'results_wk' description in 'cfg80211_sched_scan_request' include/net/cfg80211.h:1738: warning: No description found for parameter 'report_results' include/net/cfg80211.h:1738: warning: Excess struct/union/enum/typedef member 'results_wk' description in 'cfg80211_sched_scan_request' vim +/zone +4663 mm/page_alloc.c 4647 * Heuristically get a page block in the system that is unused. 4648 * It is possible that pages from the page block are used immediately after 4649 * report_unused_page_block() returns. It is the caller's responsibility 4650 * to either detect or prevent the use of such pages. 4651 * 4652 * The free list to check: zone->free_area[order].free_list[migratetype]. 4653 * 4654 * If the caller supplied page block (i.e. **page) is on the free list, offer 4655 * the next page block on the list to the caller. Otherwise, offer the first 4656 * page block on the list. 4657 * 4658 * Return 0 when a page block is found on the caller specified free list. 4659 */ 4660 int report_unused_page_block(struct zone *zone, unsigned int order, 4661 unsigned int migratetype, struct page **page) 4662 { > 4663 struct zone *this_zone; 4664 struct list_head *this_list; 4665 int ret = 0; 4666 unsigned long flags; 4667 4668 /* Sanity check */ 4669 if (zone == NULL || page == NULL || order >= MAX_ORDER || 4670 migratetype >= MIGRATE_TYPES) 4671 return -EINVAL; --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
On Fri, May 05, 2017 at 08:21:34AM +0800, kbuild test robot wrote: > Hi Wei, > > [auto build test WARNING on linus/master] > [also build test WARNING on v4.11 next-20170504] > [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/Wei-Wang/Extend-virtio-balloon-for-fast-de-inflating-fast-live-migration/20170505-052958 > reproduce: make htmldocs > > All warnings (new ones prefixed by >>): > > WARNING: convert(1) not found, for SVG to PDF conversion install ImageMagick (https://www.imagemagick.org) > arch/x86/include/asm/uaccess_32.h:1: warning: no structured comments found > >> mm/page_alloc.c:4663: warning: No description found for parameter 'zone' > >> mm/page_alloc.c:4663: warning: No description found for parameter 'order' > >> mm/page_alloc.c:4663: warning: No description found for parameter 'migratetype' > >> mm/page_alloc.c:4663: warning: No description found for parameter 'page' > include/net/cfg80211.h:1738: warning: No description found for parameter 'report_results' > include/net/cfg80211.h:1738: warning: Excess struct/union/enum/typedef member 'results_wk' description in 'cfg80211_sched_scan_request' > include/net/cfg80211.h:1738: warning: No description found for parameter 'report_results' > include/net/cfg80211.h:1738: warning: Excess struct/union/enum/typedef member 'results_wk' description in 'cfg80211_sched_scan_request' > include/net/cfg80211.h:1738: warning: No description found for parameter 'report_results' > include/net/cfg80211.h:1738: warning: Excess struct/union/enum/typedef member 'results_wk' description in 'cfg80211_sched_scan_request' > include/net/cfg80211.h:1738: warning: No description found for parameter 'report_results' > include/net/cfg80211.h:1738: warning: Excess struct/union/enum/typedef member 'results_wk' description in 'cfg80211_sched_scan_request' > include/net/cfg80211.h:1738: warning: No description found for parameter 'report_results' > include/net/cfg80211.h:1738: warning: Excess struct/union/enum/typedef member 'results_wk' description in 'cfg80211_sched_scan_request' > include/net/cfg80211.h:1738: warning: No description found for parameter 'report_results' > include/net/cfg80211.h:1738: warning: Excess struct/union/enum/typedef member 'results_wk' description in 'cfg80211_sched_scan_request' > include/net/cfg80211.h:1738: warning: No description found for parameter 'report_results' > include/net/cfg80211.h:1738: warning: Excess struct/union/enum/typedef member 'results_wk' description in 'cfg80211_sched_scan_request' > include/net/cfg80211.h:1738: warning: No description found for parameter 'report_results' > include/net/cfg80211.h:1738: warning: Excess struct/union/enum/typedef member 'results_wk' description in 'cfg80211_sched_scan_request' > include/net/cfg80211.h:1738: warning: No description found for parameter 'report_results' > include/net/cfg80211.h:1738: warning: Excess struct/union/enum/typedef member 'results_wk' description in 'cfg80211_sched_scan_request' > include/net/cfg80211.h:1738: warning: No description found for parameter 'report_results' > include/net/cfg80211.h:1738: warning: Excess struct/union/enum/typedef member 'results_wk' description in 'cfg80211_sched_scan_request' > include/net/cfg80211.h:1738: warning: No description found for parameter 'report_results' > include/net/cfg80211.h:1738: warning: Excess struct/union/enum/typedef member 'results_wk' description in 'cfg80211_sched_scan_request' > include/net/cfg80211.h:1738: warning: No description found for parameter 'report_results' > include/net/cfg80211.h:1738: warning: Excess struct/union/enum/typedef member 'results_wk' description in 'cfg80211_sched_scan_request' > include/net/cfg80211.h:1738: warning: No description found for parameter 'report_results' > include/net/cfg80211.h:1738: warning: Excess struct/union/enum/typedef member 'results_wk' description in 'cfg80211_sched_scan_request' > include/net/cfg80211.h:1738: warning: No description found for parameter 'report_results' > include/net/cfg80211.h:1738: warning: Excess struct/union/enum/typedef member 'results_wk' description in 'cfg80211_sched_scan_request' > include/net/cfg80211.h:1738: warning: No description found for parameter 'report_results' > include/net/cfg80211.h:1738: warning: Excess struct/union/enum/typedef member 'results_wk' description in 'cfg80211_sched_scan_request' > include/net/cfg80211.h:1738: warning: No description found for parameter 'report_results' > include/net/cfg80211.h:1738: warning: Excess struct/union/enum/typedef member 'results_wk' description in 'cfg80211_sched_scan_request' > include/net/cfg80211.h:1738: warning: No description found for parameter 'report_results' > include/net/cfg80211.h:1738: warning: Excess struct/union/enum/typedef member 'results_wk' description in 'cfg80211_sched_scan_request' > include/net/cfg80211.h:1738: warning: No description found for parameter 'report_results' > include/net/cfg80211.h:1738: warning: Excess struct/union/enum/typedef member 'results_wk' description in 'cfg80211_sched_scan_request' > include/net/cfg80211.h:1738: warning: No description found for parameter 'report_results' > include/net/cfg80211.h:1738: warning: Excess struct/union/enum/typedef member 'results_wk' description in 'cfg80211_sched_scan_request' > include/net/cfg80211.h:1738: warning: No description found for parameter 'report_results' > include/net/cfg80211.h:1738: warning: Excess struct/union/enum/typedef member 'results_wk' description in 'cfg80211_sched_scan_request' > include/net/cfg80211.h:1738: warning: No description found for parameter 'report_results' > include/net/cfg80211.h:1738: warning: Excess struct/union/enum/typedef member 'results_wk' description in 'cfg80211_sched_scan_request' > include/net/cfg80211.h:1738: warning: No description found for parameter 'report_results' > include/net/cfg80211.h:1738: warning: Excess struct/union/enum/typedef member 'results_wk' description in 'cfg80211_sched_scan_request' > include/net/cfg80211.h:1738: warning: No description found for parameter 'report_results' > include/net/cfg80211.h:1738: warning: Excess struct/union/enum/typedef member 'results_wk' description in 'cfg80211_sched_scan_request' > include/net/cfg80211.h:1738: warning: No description found for parameter 'report_results' > include/net/cfg80211.h:1738: warning: Excess struct/union/enum/typedef member 'results_wk' description in 'cfg80211_sched_scan_request' > include/net/cfg80211.h:1738: warning: No description found for parameter 'report_results' > include/net/cfg80211.h:1738: warning: Excess struct/union/enum/typedef member 'results_wk' description in 'cfg80211_sched_scan_request' > include/net/cfg80211.h:1738: warning: No description found for parameter 'report_results' > include/net/cfg80211.h:1738: warning: Excess struct/union/enum/typedef member 'results_wk' description in 'cfg80211_sched_scan_request' > include/net/cfg80211.h:1738: warning: No description found for parameter 'report_results' > include/net/cfg80211.h:1738: warning: Excess struct/union/enum/typedef member 'results_wk' description in 'cfg80211_sched_scan_request' > include/net/cfg80211.h:1738: warning: No description found for parameter 'report_results' > include/net/cfg80211.h:1738: warning: Excess struct/union/enum/typedef member 'results_wk' description in 'cfg80211_sched_scan_request' > include/net/cfg80211.h:1738: warning: No description found for parameter 'report_results' > include/net/cfg80211.h:1738: warning: Excess struct/union/enum/typedef member 'results_wk' description in 'cfg80211_sched_scan_request' > include/net/cfg80211.h:1738: warning: No description found for parameter 'report_results' > include/net/cfg80211.h:1738: warning: Excess struct/union/enum/typedef member 'results_wk' description in 'cfg80211_sched_scan_request' > include/net/cfg80211.h:1738: warning: No description found for parameter 'report_results' > include/net/cfg80211.h:1738: warning: Excess struct/union/enum/typedef member 'results_wk' description in 'cfg80211_sched_scan_request' > include/net/cfg80211.h:1738: warning: No description found for parameter 'report_results' > include/net/cfg80211.h:1738: warning: Excess struct/union/enum/typedef member 'results_wk' description in 'cfg80211_sched_scan_request' > include/net/cfg80211.h:1738: warning: No description found for parameter 'report_results' > include/net/cfg80211.h:1738: warning: Excess struct/union/enum/typedef member 'results_wk' description in 'cfg80211_sched_scan_request' > include/net/cfg80211.h:1738: warning: No description found for parameter 'report_results' > include/net/cfg80211.h:1738: warning: Excess struct/union/enum/typedef member 'results_wk' description in 'cfg80211_sched_scan_request' > include/net/cfg80211.h:1738: warning: No description found for parameter 'report_results' > include/net/cfg80211.h:1738: warning: Excess struct/union/enum/typedef member 'results_wk' description in 'cfg80211_sched_scan_request' > include/net/cfg80211.h:1738: warning: No description found for parameter 'report_results' > include/net/cfg80211.h:1738: warning: Excess struct/union/enum/typedef member 'results_wk' description in 'cfg80211_sched_scan_request' > include/net/cfg80211.h:1738: warning: No description found for parameter 'report_results' > include/net/cfg80211.h:1738: warning: Excess struct/union/enum/typedef member 'results_wk' description in 'cfg80211_sched_scan_request' > include/net/cfg80211.h:1738: warning: No description found for parameter 'report_results' > include/net/cfg80211.h:1738: warning: Excess struct/union/enum/typedef member 'results_wk' description in 'cfg80211_sched_scan_request' > include/net/cfg80211.h:1738: warning: No description found for parameter 'report_results' > include/net/cfg80211.h:1738: warning: Excess struct/union/enum/typedef member 'results_wk' description in 'cfg80211_sched_scan_request' > include/net/cfg80211.h:1738: warning: No description found for parameter 'report_results' > include/net/cfg80211.h:1738: warning: Excess struct/union/enum/typedef member 'results_wk' description in 'cfg80211_sched_scan_request' > include/net/cfg80211.h:1738: warning: No description found for parameter 'report_results' > include/net/cfg80211.h:1738: warning: Excess struct/union/enum/typedef member 'results_wk' description in 'cfg80211_sched_scan_request' > include/net/cfg80211.h:1738: warning: No description found for parameter 'report_results' > include/net/cfg80211.h:1738: warning: Excess struct/union/enum/typedef member 'results_wk' description in 'cfg80211_sched_scan_request' > include/net/cfg80211.h:1738: warning: No description found for parameter 'report_results' > include/net/cfg80211.h:1738: warning: Excess struct/union/enum/typedef member 'results_wk' description in 'cfg80211_sched_scan_request' > include/net/cfg80211.h:1738: warning: No description found for parameter 'report_results' > include/net/cfg80211.h:1738: warning: Excess struct/union/enum/typedef member 'results_wk' description in 'cfg80211_sched_scan_request' > include/net/cfg80211.h:1738: warning: No description found for parameter 'report_results' > include/net/cfg80211.h:1738: warning: Excess struct/union/enum/typedef member 'results_wk' description in 'cfg80211_sched_scan_request' > include/net/cfg80211.h:1738: warning: No description found for parameter 'report_results' > include/net/cfg80211.h:1738: warning: Excess struct/union/enum/typedef member 'results_wk' description in 'cfg80211_sched_scan_request' > include/net/cfg80211.h:1738: warning: No description found for parameter 'report_results' > include/net/cfg80211.h:1738: warning: Excess struct/union/enum/typedef member 'results_wk' description in 'cfg80211_sched_scan_request' > include/net/cfg80211.h:1738: warning: No description found for parameter 'report_results' > include/net/cfg80211.h:1738: warning: Excess struct/union/enum/typedef member 'results_wk' description in 'cfg80211_sched_scan_request' > include/net/cfg80211.h:1738: warning: No description found for parameter 'report_results' > include/net/cfg80211.h:1738: warning: Excess struct/union/enum/typedef member 'results_wk' description in 'cfg80211_sched_scan_request' > include/net/cfg80211.h:1738: warning: No description found for parameter 'report_results' > include/net/cfg80211.h:1738: warning: Excess struct/union/enum/typedef member 'results_wk' description in 'cfg80211_sched_scan_request' > > vim +/zone +4663 mm/page_alloc.c the issue is actually aboe this line: it is: /** which is reserved for kernel-doc. Either format properly for kernel-doc, or use simple /* to start comments. > 4647 * Heuristically get a page block in the system that is unused. > 4648 * It is possible that pages from the page block are used immediately after > 4649 * report_unused_page_block() returns. It is the caller's responsibility > 4650 * to either detect or prevent the use of such pages. > 4651 * > 4652 * The free list to check: zone->free_area[order].free_list[migratetype]. > 4653 * > 4654 * If the caller supplied page block (i.e. **page) is on the free list, offer > 4655 * the next page block on the list to the caller. Otherwise, offer the first > 4656 * page block on the list. > 4657 * > 4658 * Return 0 when a page block is found on the caller specified free list. > 4659 */ > 4660 int report_unused_page_block(struct zone *zone, unsigned int order, > 4661 unsigned int migratetype, struct page **page) > 4662 { > > 4663 struct zone *this_zone; > 4664 struct list_head *this_list; > 4665 int ret = 0; > 4666 unsigned long flags; > 4667 > 4668 /* Sanity check */ > 4669 if (zone == NULL || page == NULL || order >= MAX_ORDER || > 4670 migratetype >= MIGRATE_TYPES) > 4671 return -EINVAL; > > --- > 0-DAY kernel test infrastructure Open Source Technology Center > https://lists.01.org/pipermail/kbuild-all Intel Corporation
diff --git a/include/linux/mm.h b/include/linux/mm.h index 5d22e69..82361a6 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -1841,6 +1841,11 @@ extern void free_area_init_node(int nid, unsigned long * zones_size, unsigned long zone_start_pfn, unsigned long *zholes_size); extern void free_initmem(void); +#if IS_ENABLED(CONFIG_VIRTIO_BALLOON) +extern int report_unused_page_block(struct zone *zone, unsigned int order, + unsigned int migratetype, + struct page **page); +#endif /* * Free reserved pages within range [PAGE_ALIGN(start), end & PAGE_MASK) * into the buddy system. The freed pages will be poisoned with pattern diff --git a/mm/page_alloc.c b/mm/page_alloc.c index 2c25de4..e554ab8 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -4615,6 +4615,97 @@ void show_free_areas(unsigned int filter, nodemask_t *nodemask) show_swap_cache_info(); } +#if IS_ENABLED(CONFIG_VIRTIO_BALLOON) + +/** + * Heuristically get a page block in the system that is unused. + * It is possible that pages from the page block are used immediately after + * report_unused_page_block() returns. It is the caller's responsibility + * to either detect or prevent the use of such pages. + * + * The free list to check: zone->free_area[order].free_list[migratetype]. + * + * If the caller supplied page block (i.e. **page) is on the free list, offer + * the next page block on the list to the caller. Otherwise, offer the first + * page block on the list. + * + * Return 0 when a page block is found on the caller specified free list. + */ +int report_unused_page_block(struct zone *zone, unsigned int order, + unsigned int migratetype, struct page **page) +{ + struct zone *this_zone; + struct list_head *this_list; + int ret = 0; + unsigned long flags; + + /* Sanity check */ + if (zone == NULL || page == NULL || order >= MAX_ORDER || + migratetype >= MIGRATE_TYPES) + return -EINVAL; + + /* Zone validity check */ + for_each_populated_zone(this_zone) { + if (zone == this_zone) + break; + } + + /* Got a non-existent zone from the caller? */ + if (zone != this_zone) + return -EINVAL; + + spin_lock_irqsave(&this_zone->lock, flags); + + this_list = &zone->free_area[order].free_list[migratetype]; + if (list_empty(this_list)) { + *page = NULL; + ret = 1; + goto out; + } + + /* The caller is asking for the first free page block on the list */ + if ((*page) == NULL) { + *page = list_first_entry(this_list, struct page, lru); + ret = 0; + goto out; + } + + /** + * The page block passed from the caller is not on this free list + * anymore (e.g. a 1MB free page block has been split). In this case, + * offer the first page block on the free list that the caller is + * asking for. + */ + if (PageBuddy(*page) && order != page_order(*page)) { + *page = list_first_entry(this_list, struct page, lru); + ret = 0; + goto out; + } + + /** + * The page block passed from the caller has been the last page block + * on the list. + */ + if ((*page)->lru.next == this_list) { + *page = NULL; + ret = 1; + goto out; + } + + /** + * Finally, fall into the regular case: the page block passed from the + * caller is still on the free list. Offer the next one. + */ + *page = list_next_entry((*page), lru); + ret = 0; +out: + spin_unlock_irqrestore(&this_zone->lock, flags); + return ret; +} +EXPORT_SYMBOL(report_unused_page_block); + +#endif + static void zoneref_set_zone(struct zone *zone, struct zoneref *zoneref) { zoneref->zone = zone;