From: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com> To: linux-mm@kvack.org Cc: Andrew Morton <akpm@linux-foundation.org>, Mel Gorman <mel@csn.ul.ie>, Hugh Dickins <hughd@google.com>, KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>, Andi Kleen <andi@firstfloor.org>, Hillf Danton <dhillf@gmail.com>, Michal Hocko <mhocko@suse.cz>, linux-kernel@vger.kernel.org Subject: [PATCH 05/10] migrate: add hugepage migration code to migrate_pages() Date: Fri, 22 Mar 2013 16:23:50 -0400 [thread overview] Message-ID: <1363983835-20184-6-git-send-email-n-horiguchi@ah.jp.nec.com> (raw) In-Reply-To: <1363983835-20184-1-git-send-email-n-horiguchi@ah.jp.nec.com> This patch extends check_range() to handle vma with VM_HUGETLB set. We will be able to migrate hugepage with migrate_pages(2) after applying the enablement patch which comes later in this series. Note that for larger hugepages (covered by pud entries, 1GB for x86_64 for example), we simply skip it now. ChangeLog v2: - remove unnecessary extern - fix page table lock in check_hugetlb_pmd_range - updated description and renamed patch title Signed-off-by: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com> --- include/linux/hugetlb.h | 2 ++ mm/hugetlb.c | 10 ++++++++++ mm/mempolicy.c | 46 ++++++++++++++++++++++++++++++++++------------ 3 files changed, 46 insertions(+), 12 deletions(-) diff --git v3.9-rc3.orig/include/linux/hugetlb.h v3.9-rc3/include/linux/hugetlb.h index baa0aa0..3c62b82 100644 --- v3.9-rc3.orig/include/linux/hugetlb.h +++ v3.9-rc3/include/linux/hugetlb.h @@ -68,6 +68,7 @@ void hugetlb_unreserve_pages(struct inode *inode, long offset, long freed); int dequeue_hwpoisoned_huge_page(struct page *page); void putback_active_hugepage(struct page *page); void putback_active_hugepages(struct list_head *l); +void migrate_hugepage_add(struct page *page, struct list_head *list); void copy_huge_page(struct page *dst, struct page *src); extern unsigned long hugepages_treat_as_movable; @@ -132,6 +133,7 @@ static inline int dequeue_hwpoisoned_huge_page(struct page *page) #define putback_active_hugepage(p) 0 #define putback_active_hugepages(l) 0 +#define migrate_hugepage_add(p, l) 0 static inline void copy_huge_page(struct page *dst, struct page *src) { } diff --git v3.9-rc3.orig/mm/hugetlb.c v3.9-rc3/mm/hugetlb.c index a787c44..99ef969 100644 --- v3.9-rc3.orig/mm/hugetlb.c +++ v3.9-rc3/mm/hugetlb.c @@ -3201,3 +3201,13 @@ void putback_active_hugepages(struct list_head *l) list_for_each_entry_safe(page, page2, l, lru) putback_active_hugepage(page); } + +void migrate_hugepage_add(struct page *page, struct list_head *list) +{ + VM_BUG_ON(!PageHead(page)); + get_page(page); + spin_lock(&hugetlb_lock); + list_move_tail(&page->lru, list); + spin_unlock(&hugetlb_lock); + return; +} diff --git v3.9-rc3.orig/mm/mempolicy.c v3.9-rc3/mm/mempolicy.c index 7431001..b9e323e 100644 --- v3.9-rc3.orig/mm/mempolicy.c +++ v3.9-rc3/mm/mempolicy.c @@ -512,6 +512,27 @@ static int check_pte_range(struct vm_area_struct *vma, pmd_t *pmd, return addr != end; } +static void check_hugetlb_pmd_range(struct vm_area_struct *vma, pmd_t *pmd, + const nodemask_t *nodes, unsigned long flags, + void *private) +{ +#ifdef CONFIG_HUGETLB_PAGE + int nid; + struct page *page; + + spin_lock(&vma->vm_mm->page_table_lock); + page = pte_page(huge_ptep_get((pte_t *)pmd)); + nid = page_to_nid(page); + if (node_isset(nid, *nodes) != !!(flags & MPOL_MF_INVERT) + && ((flags & MPOL_MF_MOVE && page_mapcount(page) == 1) + || flags & MPOL_MF_MOVE_ALL)) + migrate_hugepage_add(page, private); + spin_unlock(&vma->vm_mm->page_table_lock); +#else + BUG(); +#endif +} + static inline int check_pmd_range(struct vm_area_struct *vma, pud_t *pud, unsigned long addr, unsigned long end, const nodemask_t *nodes, unsigned long flags, @@ -523,6 +544,11 @@ static inline int check_pmd_range(struct vm_area_struct *vma, pud_t *pud, pmd = pmd_offset(pud, addr); do { next = pmd_addr_end(addr, end); + if (pmd_huge(*pmd) && is_vm_hugetlb_page(vma)) { + check_hugetlb_pmd_range(vma, pmd, nodes, + flags, private); + continue; + } split_huge_page_pmd(vma, addr, pmd); if (pmd_none_or_trans_huge_or_clear_bad(pmd)) continue; @@ -544,6 +570,8 @@ static inline int check_pud_range(struct vm_area_struct *vma, pgd_t *pgd, pud = pud_offset(pgd, addr); do { next = pud_addr_end(addr, end); + if (pud_huge(*pud) && is_vm_hugetlb_page(vma)) + continue; if (pud_none_or_clear_bad(pud)) continue; if (check_pmd_range(vma, pud, addr, next, nodes, @@ -635,9 +663,6 @@ check_range(struct mm_struct *mm, unsigned long start, unsigned long end, return ERR_PTR(-EFAULT); } - if (is_vm_hugetlb_page(vma)) - goto next; - if (flags & MPOL_MF_LAZY) { change_prot_numa(vma, start, endvma); goto next; @@ -986,7 +1011,11 @@ static void migrate_page_add(struct page *page, struct list_head *pagelist, static struct page *new_node_page(struct page *page, unsigned long node, int **x) { - return alloc_pages_exact_node(node, GFP_HIGHUSER_MOVABLE, 0); + if (PageHuge(page)) + return alloc_huge_page_node(page_hstate(compound_head(page)), + node); + else + return alloc_pages_exact_node(node, GFP_HIGHUSER_MOVABLE, 0); } /* @@ -998,7 +1027,6 @@ static int migrate_to_node(struct mm_struct *mm, int source, int dest, { nodemask_t nmask; LIST_HEAD(pagelist); - int err = 0; nodes_clear(nmask); node_set(source, nmask); @@ -1012,14 +1040,8 @@ static int migrate_to_node(struct mm_struct *mm, int source, int dest, check_range(mm, mm->mmap->vm_start, mm->task_size, &nmask, flags | MPOL_MF_DISCONTIG_OK, &pagelist); - if (!list_empty(&pagelist)) { - err = migrate_pages(&pagelist, new_node_page, dest, + return migrate_movable_pages(&pagelist, new_node_page, dest, MIGRATE_SYNC, MR_SYSCALL); - if (err) - putback_lru_pages(&pagelist); - } - - return err; } /* -- 1.7.11.7
WARNING: multiple messages have this Message-ID (diff)
From: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com> To: linux-mm@kvack.org Cc: Andrew Morton <akpm@linux-foundation.org>, Mel Gorman <mel@csn.ul.ie>, Hugh Dickins <hughd@google.com>, KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>, Andi Kleen <andi@firstfloor.org>, Hillf Danton <dhillf@gmail.com>, Michal Hocko <mhocko@suse.cz>, linux-kernel@vger.kernel.org Subject: [PATCH 05/10] migrate: add hugepage migration code to migrate_pages() Date: Fri, 22 Mar 2013 16:23:50 -0400 [thread overview] Message-ID: <1363983835-20184-6-git-send-email-n-horiguchi@ah.jp.nec.com> (raw) In-Reply-To: <1363983835-20184-1-git-send-email-n-horiguchi@ah.jp.nec.com> This patch extends check_range() to handle vma with VM_HUGETLB set. We will be able to migrate hugepage with migrate_pages(2) after applying the enablement patch which comes later in this series. Note that for larger hugepages (covered by pud entries, 1GB for x86_64 for example), we simply skip it now. ChangeLog v2: - remove unnecessary extern - fix page table lock in check_hugetlb_pmd_range - updated description and renamed patch title Signed-off-by: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com> --- include/linux/hugetlb.h | 2 ++ mm/hugetlb.c | 10 ++++++++++ mm/mempolicy.c | 46 ++++++++++++++++++++++++++++++++++------------ 3 files changed, 46 insertions(+), 12 deletions(-) diff --git v3.9-rc3.orig/include/linux/hugetlb.h v3.9-rc3/include/linux/hugetlb.h index baa0aa0..3c62b82 100644 --- v3.9-rc3.orig/include/linux/hugetlb.h +++ v3.9-rc3/include/linux/hugetlb.h @@ -68,6 +68,7 @@ void hugetlb_unreserve_pages(struct inode *inode, long offset, long freed); int dequeue_hwpoisoned_huge_page(struct page *page); void putback_active_hugepage(struct page *page); void putback_active_hugepages(struct list_head *l); +void migrate_hugepage_add(struct page *page, struct list_head *list); void copy_huge_page(struct page *dst, struct page *src); extern unsigned long hugepages_treat_as_movable; @@ -132,6 +133,7 @@ static inline int dequeue_hwpoisoned_huge_page(struct page *page) #define putback_active_hugepage(p) 0 #define putback_active_hugepages(l) 0 +#define migrate_hugepage_add(p, l) 0 static inline void copy_huge_page(struct page *dst, struct page *src) { } diff --git v3.9-rc3.orig/mm/hugetlb.c v3.9-rc3/mm/hugetlb.c index a787c44..99ef969 100644 --- v3.9-rc3.orig/mm/hugetlb.c +++ v3.9-rc3/mm/hugetlb.c @@ -3201,3 +3201,13 @@ void putback_active_hugepages(struct list_head *l) list_for_each_entry_safe(page, page2, l, lru) putback_active_hugepage(page); } + +void migrate_hugepage_add(struct page *page, struct list_head *list) +{ + VM_BUG_ON(!PageHead(page)); + get_page(page); + spin_lock(&hugetlb_lock); + list_move_tail(&page->lru, list); + spin_unlock(&hugetlb_lock); + return; +} diff --git v3.9-rc3.orig/mm/mempolicy.c v3.9-rc3/mm/mempolicy.c index 7431001..b9e323e 100644 --- v3.9-rc3.orig/mm/mempolicy.c +++ v3.9-rc3/mm/mempolicy.c @@ -512,6 +512,27 @@ static int check_pte_range(struct vm_area_struct *vma, pmd_t *pmd, return addr != end; } +static void check_hugetlb_pmd_range(struct vm_area_struct *vma, pmd_t *pmd, + const nodemask_t *nodes, unsigned long flags, + void *private) +{ +#ifdef CONFIG_HUGETLB_PAGE + int nid; + struct page *page; + + spin_lock(&vma->vm_mm->page_table_lock); + page = pte_page(huge_ptep_get((pte_t *)pmd)); + nid = page_to_nid(page); + if (node_isset(nid, *nodes) != !!(flags & MPOL_MF_INVERT) + && ((flags & MPOL_MF_MOVE && page_mapcount(page) == 1) + || flags & MPOL_MF_MOVE_ALL)) + migrate_hugepage_add(page, private); + spin_unlock(&vma->vm_mm->page_table_lock); +#else + BUG(); +#endif +} + static inline int check_pmd_range(struct vm_area_struct *vma, pud_t *pud, unsigned long addr, unsigned long end, const nodemask_t *nodes, unsigned long flags, @@ -523,6 +544,11 @@ static inline int check_pmd_range(struct vm_area_struct *vma, pud_t *pud, pmd = pmd_offset(pud, addr); do { next = pmd_addr_end(addr, end); + if (pmd_huge(*pmd) && is_vm_hugetlb_page(vma)) { + check_hugetlb_pmd_range(vma, pmd, nodes, + flags, private); + continue; + } split_huge_page_pmd(vma, addr, pmd); if (pmd_none_or_trans_huge_or_clear_bad(pmd)) continue; @@ -544,6 +570,8 @@ static inline int check_pud_range(struct vm_area_struct *vma, pgd_t *pgd, pud = pud_offset(pgd, addr); do { next = pud_addr_end(addr, end); + if (pud_huge(*pud) && is_vm_hugetlb_page(vma)) + continue; if (pud_none_or_clear_bad(pud)) continue; if (check_pmd_range(vma, pud, addr, next, nodes, @@ -635,9 +663,6 @@ check_range(struct mm_struct *mm, unsigned long start, unsigned long end, return ERR_PTR(-EFAULT); } - if (is_vm_hugetlb_page(vma)) - goto next; - if (flags & MPOL_MF_LAZY) { change_prot_numa(vma, start, endvma); goto next; @@ -986,7 +1011,11 @@ static void migrate_page_add(struct page *page, struct list_head *pagelist, static struct page *new_node_page(struct page *page, unsigned long node, int **x) { - return alloc_pages_exact_node(node, GFP_HIGHUSER_MOVABLE, 0); + if (PageHuge(page)) + return alloc_huge_page_node(page_hstate(compound_head(page)), + node); + else + return alloc_pages_exact_node(node, GFP_HIGHUSER_MOVABLE, 0); } /* @@ -998,7 +1027,6 @@ static int migrate_to_node(struct mm_struct *mm, int source, int dest, { nodemask_t nmask; LIST_HEAD(pagelist); - int err = 0; nodes_clear(nmask); node_set(source, nmask); @@ -1012,14 +1040,8 @@ static int migrate_to_node(struct mm_struct *mm, int source, int dest, check_range(mm, mm->mmap->vm_start, mm->task_size, &nmask, flags | MPOL_MF_DISCONTIG_OK, &pagelist); - if (!list_empty(&pagelist)) { - err = migrate_pages(&pagelist, new_node_page, dest, + return migrate_movable_pages(&pagelist, new_node_page, dest, MIGRATE_SYNC, MR_SYSCALL); - if (err) - putback_lru_pages(&pagelist); - } - - return err; } /* -- 1.7.11.7 -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a>
next prev parent reply other threads:[~2013-03-22 20:27 UTC|newest] Thread overview: 132+ messages / expand[flat|nested] mbox.gz Atom feed top 2013-03-22 20:23 [PATCH v2 0/10] extend hugepage migration Naoya Horiguchi 2013-03-22 20:23 ` Naoya Horiguchi 2013-03-22 20:23 ` [PATCH 01/10] migrate: add migrate_entry_wait_huge() Naoya Horiguchi 2013-03-22 20:23 ` Naoya Horiguchi 2013-03-23 15:55 ` Rik van Riel 2013-03-23 15:55 ` Rik van Riel 2013-03-25 10:13 ` Michal Hocko 2013-03-25 10:13 ` Michal Hocko 2013-03-26 4:25 ` Naoya Horiguchi 2013-03-26 4:25 ` Naoya Horiguchi 2013-04-05 20:33 ` KOSAKI Motohiro 2013-04-05 20:33 ` KOSAKI Motohiro 2013-04-08 20:00 ` Naoya Horiguchi 2013-04-08 20:00 ` Naoya Horiguchi 2013-04-05 20:33 ` KOSAKI Motohiro 2013-04-05 20:33 ` KOSAKI Motohiro 2013-03-22 20:23 ` [PATCH 02/10] migrate: make core migration code aware of hugepage Naoya Horiguchi 2013-03-22 20:23 ` Naoya Horiguchi 2013-03-25 10:57 ` Michal Hocko 2013-03-25 10:57 ` Michal Hocko 2013-03-26 4:33 ` Naoya Horiguchi 2013-03-26 4:33 ` Naoya Horiguchi 2013-03-26 8:49 ` Michal Hocko 2013-03-26 8:49 ` Michal Hocko 2013-04-05 20:41 ` KOSAKI Motohiro 2013-04-05 20:41 ` KOSAKI Motohiro 2013-03-22 20:23 ` [PATCH 03/10] soft-offline: use migrate_pages() instead of migrate_huge_page() Naoya Horiguchi 2013-03-22 20:23 ` Naoya Horiguchi 2013-03-25 12:31 ` Michal Hocko 2013-03-25 12:31 ` Michal Hocko 2013-03-26 4:34 ` Naoya Horiguchi 2013-03-26 4:34 ` Naoya Horiguchi 2013-03-26 9:49 ` Michal Hocko 2013-03-26 9:49 ` Michal Hocko 2013-03-26 20:35 ` Naoya Horiguchi 2013-03-26 20:35 ` Naoya Horiguchi 2013-03-27 13:00 ` Michal Hocko 2013-03-27 13:00 ` Michal Hocko 2013-04-05 21:11 ` KOSAKI Motohiro 2013-04-05 21:11 ` KOSAKI Motohiro 2013-03-26 11:29 ` Aneesh Kumar K.V 2013-03-26 11:29 ` Aneesh Kumar K.V 2013-03-27 13:52 ` Michal Hocko 2013-03-27 13:52 ` Michal Hocko 2013-03-27 19:19 ` Naoya Horiguchi 2013-03-27 19:19 ` Naoya Horiguchi 2013-03-28 8:53 ` Michal Hocko 2013-03-28 8:53 ` Michal Hocko 2013-03-29 5:26 ` Aneesh Kumar K.V 2013-03-29 5:26 ` Aneesh Kumar K.V 2013-03-29 9:36 ` Michal Hocko 2013-03-29 9:36 ` Michal Hocko 2013-04-01 5:13 ` Aneesh Kumar K.V 2013-04-01 5:13 ` Aneesh Kumar K.V 2013-04-02 9:45 ` Michal Hocko 2013-04-02 9:45 ` Michal Hocko 2013-03-22 20:23 ` [PATCH 04/10] migrate: clean up migrate_huge_page() Naoya Horiguchi 2013-03-22 20:23 ` Naoya Horiguchi 2013-04-05 21:13 ` KOSAKI Motohiro 2013-04-05 21:13 ` KOSAKI Motohiro 2013-03-22 20:23 ` Naoya Horiguchi [this message] 2013-03-22 20:23 ` [PATCH 05/10] migrate: add hugepage migration code to migrate_pages() Naoya Horiguchi 2013-03-25 13:04 ` Michal Hocko 2013-03-25 13:04 ` Michal Hocko 2013-03-26 5:13 ` Naoya Horiguchi 2013-03-26 5:13 ` Naoya Horiguchi 2013-03-26 8:55 ` Michal Hocko 2013-03-26 8:55 ` Michal Hocko 2013-04-05 21:17 ` KOSAKI Motohiro 2013-04-05 21:17 ` KOSAKI Motohiro 2013-04-08 20:21 ` Naoya Horiguchi 2013-04-08 20:21 ` Naoya Horiguchi 2013-03-22 20:23 ` [PATCH 06/10] migrate: add hugepage migration code to move_pages() Naoya Horiguchi 2013-03-22 20:23 ` Naoya Horiguchi 2013-03-25 13:36 ` Michal Hocko 2013-03-25 13:36 ` Michal Hocko 2013-03-26 7:06 ` Naoya Horiguchi 2013-03-26 7:06 ` Naoya Horiguchi 2013-03-26 10:02 ` Michal Hocko 2013-03-26 10:02 ` Michal Hocko 2013-03-26 20:37 ` Naoya Horiguchi 2013-03-26 20:37 ` Naoya Horiguchi 2013-03-22 20:23 ` [PATCH 07/10] mbind: add hugepage migration code to mbind() Naoya Horiguchi 2013-03-22 20:23 ` Naoya Horiguchi 2013-03-25 13:49 ` Michal Hocko 2013-03-25 13:49 ` Michal Hocko 2013-04-05 22:23 ` KOSAKI Motohiro 2013-04-05 22:23 ` KOSAKI Motohiro 2013-04-06 7:04 ` Michal Hocko 2013-04-06 7:04 ` Michal Hocko 2013-04-05 22:18 ` KOSAKI Motohiro 2013-04-05 22:18 ` KOSAKI Motohiro 2013-04-08 20:25 ` Naoya Horiguchi 2013-04-08 20:25 ` Naoya Horiguchi 2013-03-22 20:23 ` [PATCH 08/10] migrate: remove VM_HUGETLB from vma flag check in vma_migratable() Naoya Horiguchi 2013-03-22 20:23 ` Naoya Horiguchi 2013-03-22 20:23 ` [PATCH 09/10] memory-hotplug: enable memory hotplug to handle hugepage Naoya Horiguchi 2013-03-22 20:23 ` Naoya Horiguchi 2013-03-25 15:09 ` Michal Hocko 2013-03-25 15:09 ` Michal Hocko 2013-03-26 18:23 ` Naoya Horiguchi 2013-03-26 18:23 ` Naoya Horiguchi 2013-03-27 14:19 ` Michal Hocko 2013-03-27 14:19 ` Michal Hocko 2013-03-27 21:29 ` Naoya Horiguchi 2013-03-27 21:29 ` Naoya Horiguchi 2013-03-27 21:58 ` Naoya Horiguchi 2013-03-27 21:58 ` Naoya Horiguchi 2013-03-27 22:55 ` Michal Hocko 2013-03-27 22:55 ` Michal Hocko 2013-03-26 12:01 ` Aneesh Kumar K.V 2013-03-26 12:01 ` Aneesh Kumar K.V 2013-03-27 19:28 ` Naoya Horiguchi 2013-03-27 19:28 ` Naoya Horiguchi 2013-04-06 0:13 ` KOSAKI Motohiro 2013-04-06 0:13 ` KOSAKI Motohiro 2013-04-09 20:07 ` Naoya Horiguchi 2013-04-09 20:07 ` Naoya Horiguchi 2013-04-09 21:27 ` KOSAKI Motohiro 2013-04-09 21:27 ` KOSAKI Motohiro 2013-04-09 22:43 ` Naoya Horiguchi 2013-04-09 22:43 ` Naoya Horiguchi 2013-04-10 1:56 ` KOSAKI Motohiro 2013-04-10 1:56 ` KOSAKI Motohiro 2013-04-10 2:24 ` Naoya Horiguchi 2013-04-10 2:24 ` Naoya Horiguchi 2013-03-22 20:23 ` [PATCH 10/10] prepare to remove /proc/sys/vm/hugepages_treat_as_movable Naoya Horiguchi 2013-03-22 20:23 ` Naoya Horiguchi 2013-03-25 15:12 ` Michal Hocko 2013-03-25 15:12 ` Michal Hocko 2013-04-06 0:15 ` KOSAKI Motohiro 2013-04-06 0:15 ` KOSAKI Motohiro
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