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| author | SeongJae Park <sj38.park@gmail.com> | 2017-05-13 01:46:38 +0300 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2017-05-13 01:57:15 +0300 |
| commit | 835152a25949dd5561819c2e3fcc4b2dd27f3e1e (patch) | |
| tree | 018d3d942d62afc4a772793caa6a571046b86331 | |
| parent | 05384213436ab690c46d9dfec706b80ef8d671ab (diff) | |
| download | linux-835152a25949dd5561819c2e3fcc4b2dd27f3e1e.tar.xz | |
mm/khugepaged: add missed tracepoint for collapse_huge_page_swapin
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/20170507101813.30187-1-sj38.park@gmail.com
Signed-off-by: SeongJae Park <sj38.park@gmail.com>
Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| -rw-r--r-- | mm/khugepaged.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/mm/khugepaged.c b/mm/khugepaged.c index 7cb9c88bb4a3..d1943e54ba95 100644 --- a/mm/khugepaged.c +++ b/mm/khugepaged.c @@ -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); |