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mm/khugepaged: add missed tracepoint for collapse_huge_page_swapin

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One return case of `__collapse_huge_page_swapin()` does not invoke
tracepoint while every other return case does.  This commit adds a
tracepoint invocation for the case.

Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: SeongJae Park <[email protected]>
Cc: Kirill A. Shutemov <[email protected]>
Cc: Johannes Weiner <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
SeongJae Park 2017-05-12 15:46:38 -07:00 • committed by Linus Torvalds
commit 835152a259
1 changed files with 3 additions and 1 deletions
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4
mm/khugepaged.c
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@ -907,8 +907,10 @@ static bool __collapse_huge_page_swapin(struct mm_struct *mm,
return false;
}
/* check if the pmd is still valid */
if (mm_find_pmd(mm, address) != pmd)
if (mm_find_pmd(mm, address) != pmd) {
trace_mm_collapse_huge_page_swapin(mm, swapped_in, referenced, 0);
return false;
}
}
if (ret & VM_FAULT_ERROR) {
trace_mm_collapse_huge_page_swapin(mm, swapped_in, referenced, 0);