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locking: Reduce the number of locks in ww_mutex stress tests 

The stress test in test_ww_mutex_init() uses 4095 locks since
lockdep::reference has 12 bits, and since we are going to reduce it to
11 bits to support lock_sync(), and 2047 is still a reasonable number of
the max nesting level for locks, so adjust the test.

Reported-by: kernel test robot <oliver.sang@intel.com>
Link: https://lore.kernel.org/oe-lkp/202302011445.9d99dae2-oliver.sang@intel.com
Tested-by: Paul E. McKenney <paulmck@kernel.org>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Boqun Feng <boqun.feng@gmail.com>
This commit is contained in:
Boqun Feng 2023-03-12 12:04:48 -07:00
parent f0f44752f5
commit 60a1a64ec0
1 changed files with 1 additions and 1 deletions
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2
kernel/locking/test-ww_mutex.c
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@ -659,7 +659,7 @@ static int __init test_ww_mutex_init(void)
if (ret) if (ret)
return ret; return ret;
ret = stress(4095, hweight32(STRESS_ALL)*ncpus, STRESS_ALL); ret = stress(2047, hweight32(STRESS_ALL)*ncpus, STRESS_ALL);
if (ret) if (ret)
return ret; return ret;