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From: John Stultz <jstultz@google.com>
To: LKML <linux-kernel@vger.kernel.org>
Cc: John Stultz <jstultz@google.com>,
	Peter Zijlstra <peterz@infradead.org>,
	Ingo Molnar <mingo@redhat.com>, Will Deacon <will@kernel.org>,
	Waiman Long <longman@redhat.com>,
	Boqun Feng <boqun.feng@gmail.com>,
	"Paul E . McKenney" <paulmck@kernel.org>,
	Joel Fernandes <joelaf@google.com>,
	Dietmar Eggemann <dietmar.eggemann@arm.com>,
	kernel-team@android.com
Subject: [PATCH 0/3] Fixes for test-ww_mutex stress test
Date: Fri, 22 Sep 2023 04:35:58 +0000	[thread overview]
Message-ID: <20230922043616.19282-1-jstultz@google.com> (raw)

As part of recent stabilizing of the proxy-execution series,
I've seen a number of issues from the test-ww_mutex module.

This test is great for shaking out problems in the patches, but
in some cases it seems the patch series has made it easier to
uncover problems in the test-ww_mutex stress tests.

So this patch series provides a few fixes that I've come up with
in testing with qemu using large cpu counts.

Feedback would be greatly appreciated!

thanks
-john

Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Will Deacon <will@kernel.org>
Cc: Waiman Long <longman@redhat.com>
Cc: Boqun Feng <boqun.feng@gmail.com>
Cc: "Paul E . McKenney" <paulmck@kernel.org>
Cc: Joel Fernandes <joelaf@google.com>
Cc: Dietmar Eggemann <dietmar.eggemann@arm.com>
Cc: kernel-team@android.com

John Stultz (3):
  test-ww_mutex: Use prng instead of rng to avoid hangs at bootup
  test-ww_mutex: Fix potential workqueue corruption
  test-ww_mutex: Make sure we bail out instead of livelock

 kernel/locking/test-ww_mutex.c | 48 ++++++++++++++++++++++++----------
 1 file changed, 34 insertions(+), 14 deletions(-)

-- 
2.42.0.515.g380fc7ccd1-goog


             reply	other threads:[~2023-09-22  4:36 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-09-22  4:35 John Stultz [this message]
2023-09-22  4:35 ` [PATCH 1/3] test-ww_mutex: Use prng instead of rng to avoid hangs at bootup John Stultz
2023-09-22  8:11   ` [tip: locking/core] locking/ww_mutex/test: " tip-bot2 for John Stultz
2023-09-22  4:36 ` [PATCH 2/3] test-ww_mutex: Fix potential workqueue corruption John Stultz
2023-09-22  8:11   ` [tip: locking/core] locking/ww_mutex/test: " tip-bot2 for John Stultz
2023-09-22  4:36 ` [PATCH 3/3] test-ww_mutex: Make sure we bail out instead of livelock John Stultz
2023-09-22  8:11   ` [tip: locking/core] locking/ww_mutex/test: " tip-bot2 for John Stultz

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