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author | Ebru Akagunduz <ebru.akagunduz@gmail.com> | 2016-07-26 15:26:46 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2016-07-26 16:19:19 -0700 |
commit | 0db501f7a34c11d3b964205e5b6d00692a648035 (patch) | |
tree | 1e0abb724957a37157af899319770086e10e1dc5 /include/trace/events | |
parent | 47f863ea220067f5c87096893876f44500fcc8c9 (diff) | |
download | op-kernel-dev-0db501f7a34c11d3b964205e5b6d00692a648035.zip op-kernel-dev-0db501f7a34c11d3b964205e5b6d00692a648035.tar.gz |
mm, thp: convert from optimistic swapin collapsing to conservative
To detect whether khugepaged swapin is worthwhile, this patch checks the
amount of young pages. There should be at least half of HPAGE_PMD_NR to
swapin.
Link: http://lkml.kernel.org/r/1468109451-1615-1-git-send-email-ebru.akagunduz@gmail.com
Signed-off-by: Ebru Akagunduz <ebru.akagunduz@gmail.com>
Suggested-by: Minchan Kim <minchan@kernel.org>
Acked-by: Rik van Riel <riel@redhat.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Cc: Cyrill Gorcunov <gorcunov@openvz.org>
Cc: Mel Gorman <mgorman@suse.de>
Cc: David Rientjes <rientjes@google.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Michal Hocko <mhocko@suse.cz>
Cc: Boaz Harrosh <boaz@plexistor.com>
Cc: Hillf Danton <hillf.zj@alibaba-inc.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/trace/events')
-rw-r--r-- | include/trace/events/huge_memory.h | 19 |
1 files changed, 11 insertions, 8 deletions
diff --git a/include/trace/events/huge_memory.h b/include/trace/events/huge_memory.h index 830d47d..04f58ac 100644 --- a/include/trace/events/huge_memory.h +++ b/include/trace/events/huge_memory.h @@ -13,7 +13,7 @@ EM( SCAN_EXCEED_NONE_PTE, "exceed_none_pte") \ EM( SCAN_PTE_NON_PRESENT, "pte_non_present") \ EM( SCAN_PAGE_RO, "no_writable_page") \ - EM( SCAN_NO_REFERENCED_PAGE, "no_referenced_page") \ + EM( SCAN_LACK_REFERENCED_PAGE, "lack_referenced_page") \ EM( SCAN_PAGE_NULL, "page_null") \ EM( SCAN_SCAN_ABORT, "scan_aborted") \ EM( SCAN_PAGE_COUNT, "not_suitable_page_count") \ @@ -47,7 +47,7 @@ SCAN_STATUS TRACE_EVENT(mm_khugepaged_scan_pmd, TP_PROTO(struct mm_struct *mm, struct page *page, bool writable, - bool referenced, int none_or_zero, int status, int unmapped), + int referenced, int none_or_zero, int status, int unmapped), TP_ARGS(mm, page, writable, referenced, none_or_zero, status, unmapped), @@ -55,7 +55,7 @@ TRACE_EVENT(mm_khugepaged_scan_pmd, __field(struct mm_struct *, mm) __field(unsigned long, pfn) __field(bool, writable) - __field(bool, referenced) + __field(int, referenced) __field(int, none_or_zero) __field(int, status) __field(int, unmapped) @@ -108,14 +108,14 @@ TRACE_EVENT(mm_collapse_huge_page, TRACE_EVENT(mm_collapse_huge_page_isolate, TP_PROTO(struct page *page, int none_or_zero, - bool referenced, bool writable, int status), + int referenced, bool writable, int status), TP_ARGS(page, none_or_zero, referenced, writable, status), TP_STRUCT__entry( __field(unsigned long, pfn) __field(int, none_or_zero) - __field(bool, referenced) + __field(int, referenced) __field(bool, writable) __field(int, status) ), @@ -138,25 +138,28 @@ TRACE_EVENT(mm_collapse_huge_page_isolate, TRACE_EVENT(mm_collapse_huge_page_swapin, - TP_PROTO(struct mm_struct *mm, int swapped_in, int ret), + TP_PROTO(struct mm_struct *mm, int swapped_in, int referenced, int ret), - TP_ARGS(mm, swapped_in, ret), + TP_ARGS(mm, swapped_in, referenced, ret), TP_STRUCT__entry( __field(struct mm_struct *, mm) __field(int, swapped_in) + __field(int, referenced) __field(int, ret) ), TP_fast_assign( __entry->mm = mm; __entry->swapped_in = swapped_in; + __entry->referenced = referenced; __entry->ret = ret; ), - TP_printk("mm=%p, swapped_in=%d, ret=%d", + TP_printk("mm=%p, swapped_in=%d, referenced=%d, ret=%d", __entry->mm, __entry->swapped_in, + __entry->referenced, __entry->ret) ); |