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| author | Boqun Feng <boqun.feng@gmail.com> | 2020-11-02 06:37:42 +0100 |
|---|---|---|
| committer | Peter Zijlstra <peterz@infradead.org> | 2020-12-03 11:20:50 +0100 |
| commit | e04ce676e7aa490dcf5df880592e3db5e842a9bc (patch) | |
| tree | ff5ed969437455675e570795708e4e0357eab7c2 /init | |
| parent | lockdep/selftests: Fix PROVE_RAW_LOCK_NESTING (diff) | |
| download | linux-e04ce676e7aa490dcf5df880592e3db5e842a9bc.tar.xz linux-e04ce676e7aa490dcf5df880592e3db5e842a9bc.zip | |
lockdep/selftest: Add spin_nest_lock test
Add a self test case to test the behavior for the following case:
lock(A);
lock_nest_lock(C1, A);
lock(B);
lock_nest_lock(C2, A);
This is a reproducer for a problem[1] reported by Chris Wilson, and is
helpful to prevent this.
[1]: https://lore.kernel.org/lkml/160390684819.31966.12048967113267928793@build.alporthouse.com/
Signed-off-by: Boqun Feng <boqun.feng@gmail.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lkml.kernel.org/r/20201102053743.450459-2-boqun.feng@gmail.com
Diffstat (limited to 'init')
0 files changed, 0 insertions, 0 deletions