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authorPeter Zijlstra <peterz@infradead.org>2013-10-07 11:29:20 +0100
committerIngo Molnar <mingo@kernel.org>2013-10-09 14:47:45 +0200
commit90572890d202527c366aa9489b32404e88a7c020 (patch)
tree0577f3b043e312f6d53e50105b236514f7df2455 /mm/memory.c
parente1dda8a797b59d7ec4b17e393152ec3273a552d5 (diff)
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mm: numa: Change page last {nid,pid} into {cpu,pid}
Change the per page last fault tracking to use cpu,pid instead of nid,pid. This will allow us to try and lookup the alternate task more easily. Note that even though it is the cpu that is store in the page flags that the mpol_misplaced decision is still based on the node. Signed-off-by: Peter Zijlstra <peterz@infradead.org> Signed-off-by: Mel Gorman <mgorman@suse.de> Reviewed-by: Rik van Riel <riel@redhat.com> Cc: Andrea Arcangeli <aarcange@redhat.com> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Srikar Dronamraju <srikar@linux.vnet.ibm.com> Link: http://lkml.kernel.org/r/1381141781-10992-43-git-send-email-mgorman@suse.de [ Fixed build failure on 32-bit systems. ] Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'mm/memory.c')
-rw-r--r--mm/memory.c16
1 files changed, 8 insertions, 8 deletions
diff --git a/mm/memory.c b/mm/memory.c
index cc7f20691c82..5162e6d0d652 100644
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -69,8 +69,8 @@
#include "internal.h"
-#ifdef LAST_NIDPID_NOT_IN_PAGE_FLAGS
-#warning Unfortunate NUMA and NUMA Balancing config, growing page-frame for last_nidpid.
+#ifdef LAST_CPUPID_NOT_IN_PAGE_FLAGS
+#warning Unfortunate NUMA and NUMA Balancing config, growing page-frame for last_cpupid.
#endif
#ifndef CONFIG_NEED_MULTIPLE_NODES
@@ -3536,7 +3536,7 @@ int do_numa_page(struct mm_struct *mm, struct vm_area_struct *vma,
struct page *page = NULL;
spinlock_t *ptl;
int page_nid = -1;
- int last_nidpid;
+ int last_cpupid;
int target_nid;
bool migrated = false;
@@ -3567,7 +3567,7 @@ int do_numa_page(struct mm_struct *mm, struct vm_area_struct *vma,
}
BUG_ON(is_zero_pfn(page_to_pfn(page)));
- last_nidpid = page_nidpid_last(page);
+ last_cpupid = page_cpupid_last(page);
page_nid = page_to_nid(page);
target_nid = numa_migrate_prep(page, vma, addr, page_nid);
pte_unmap_unlock(ptep, ptl);
@@ -3583,7 +3583,7 @@ int do_numa_page(struct mm_struct *mm, struct vm_area_struct *vma,
out:
if (page_nid != -1)
- task_numa_fault(last_nidpid, page_nid, 1, migrated);
+ task_numa_fault(last_cpupid, page_nid, 1, migrated);
return 0;
}
@@ -3598,7 +3598,7 @@ static int do_pmd_numa_page(struct mm_struct *mm, struct vm_area_struct *vma,
unsigned long offset;
spinlock_t *ptl;
bool numa = false;
- int last_nidpid;
+ int last_cpupid;
spin_lock(&mm->page_table_lock);
pmd = *pmdp;
@@ -3643,7 +3643,7 @@ static int do_pmd_numa_page(struct mm_struct *mm, struct vm_area_struct *vma,
if (unlikely(!page))
continue;
- last_nidpid = page_nidpid_last(page);
+ last_cpupid = page_cpupid_last(page);
page_nid = page_to_nid(page);
target_nid = numa_migrate_prep(page, vma, addr, page_nid);
pte_unmap_unlock(pte, ptl);
@@ -3656,7 +3656,7 @@ static int do_pmd_numa_page(struct mm_struct *mm, struct vm_area_struct *vma,
}
if (page_nid != -1)
- task_numa_fault(last_nidpid, page_nid, 1, migrated);
+ task_numa_fault(last_cpupid, page_nid, 1, migrated);
pte = pte_offset_map_lock(mm, pmdp, addr, &ptl);
}