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| author | Zach O'Keefe <zokeefe@google.com> | 2022-09-22 15:40:40 -0700 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2022-10-03 14:03:33 -0700 |
| commit | d41fd2016ed07a630da2817b76c98eeab7931e1e (patch) | |
| tree | fba8325fdafac5396ea10e321165ce5f24cd61fe /mm | |
| parent | 34488399fa08faaf664743fa54b271eb6f9e1321 (diff) | |
| download | linux-stable-d41fd2016ed07a630da2817b76c98eeab7931e1e.tar.gz linux-stable-d41fd2016ed07a630da2817b76c98eeab7931e1e.tar.bz2 linux-stable-d41fd2016ed07a630da2817b76c98eeab7931e1e.zip | |
mm/khugepaged: add tracepoint to hpage_collapse_scan_file()
Add huge_memory:trace_mm_khugepaged_scan_file tracepoint to
hpage_collapse_scan_file() analogously to hpage_collapse_scan_pmd().
While this change is targeted at debugging MADV_COLLAPSE pathway, the
"mm_khugepaged" prefix is retained for symmetry with
huge_memory:trace_mm_khugepaged_scan_pmd, which retains it's legacy name
to prevent changing kernel ABI as much as possible.
Link: https://lkml.kernel.org/r/20220907144521.3115321-5-zokeefe@google.com
Link: https://lkml.kernel.org/r/20220922224046.1143204-5-zokeefe@google.com
Signed-off-by: Zach O'Keefe <zokeefe@google.com>
Reviewed-by: Yang Shi <shy828301@gmail.com>
Cc: Axel Rasmussen <axelrasmussen@google.com>
Cc: Chris Kennelly <ckennelly@google.com>
Cc: David Hildenbrand <david@redhat.com>
Cc: David Rientjes <rientjes@google.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: James Houghton <jthoughton@google.com>
Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Miaohe Lin <linmiaohe@huawei.com>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Pasha Tatashin <pasha.tatashin@soleen.com>
Cc: Peter Xu <peterx@redhat.com>
Cc: Rongwei Wang <rongwei.wang@linux.alibaba.com>
Cc: SeongJae Park <sj@kernel.org>
Cc: Song Liu <songliubraving@fb.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'mm')
| -rw-r--r-- | mm/khugepaged.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/mm/khugepaged.c b/mm/khugepaged.c index 3bd6e2a74163..c7699fabf302 100644 --- a/mm/khugepaged.c +++ b/mm/khugepaged.c @@ -2157,7 +2157,8 @@ static int hpage_collapse_scan_file(struct mm_struct *mm, unsigned long addr, } } - /* TODO: tracepoints */ + trace_mm_khugepaged_scan_file(mm, page, file->f_path.dentry->d_iname, + present, swap, result); return result; } #else |