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| author | Gabriel Krisman Bertazi <[email protected]> | 2022-04-28 23:16:11 -0700 |
|---|---|---|
| committer | akpm <[email protected]> | 2022-04-28 23:16:11 -0700 |
| commit | 9f3265db6ae87de27a5e382410b8eb9af53b161e (patch) | |
| tree | bdd1c2018c2e3a511cdb89c52a6ab749351e7197 /tools/perf/scripts/python/flamegraph.py | |
| parent | 642bc52aed9c99e8c9c9cfb6781f77719717a36c (diff) | |
selftests: vm: add test for Soft-Dirty PTE bit
This introduces three tests:
1) Sanity check soft dirty basic semantics: allocate area, clean,
dirty, check if the SD bit is flipped.
2) Check VMA reuse: validate the VM_SOFTDIRTY usage
3) Check soft-dirty on huge pages
This was motivated by Will Deacon's fix commit 912efa17e512 ("mm: proc:
Invalidate TLB after clearing soft-dirty page state"). I was tracking the
same issue that he fixed, and this test would have caught it.
Link: https://lkml.kernel.org/r/[email protected]
Signed-off-by: Gabriel Krisman Bertazi <[email protected]>
Signed-off-by: Muhammad Usama Anjum <[email protected]>
Co-developed-by: Muhammad Usama Anjum <[email protected]>
Cc: Will Deacon <[email protected]>
Cc: Shuah Khan <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Diffstat (limited to 'tools/perf/scripts/python/flamegraph.py')
0 files changed, 0 insertions, 0 deletions