From: Davidlohr Bueso <dave@stgolabs.net>
To: mingo@kernel.org, peterz@infradead.org, akpm@linux-foundation.org
Cc: jack@suse.cz, kirill.shutemov@linux.intel.com, mhocko@suse.com,
mgorman@techsingularity.net, dave@stgolabs.net,
linux-kernel@vger.kernel.org, Davidlohr Bueso <dbueso@suse.de>
Subject: [PATCH 2/5] locking/locktorture: Fix rwsem reader_delay
Date: Mon, 6 Mar 2017 21:03:27 -0800 [thread overview]
Message-ID: <1488863010-13028-3-git-send-email-dave@stgolabs.net> (raw)
In-Reply-To: <1488863010-13028-1-git-send-email-dave@stgolabs.net>
We should account for nreader threads, not writers in this
callback. Could even trigger a div by 0 if the user explicitly
disables writers.
Signed-off-by: Davidlohr Bueso <dbueso@suse.de>
---
kernel/locking/locktorture.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/kernel/locking/locktorture.c b/kernel/locking/locktorture.c
index f24582d4dad3..0ef5510f8742 100644
--- a/kernel/locking/locktorture.c
+++ b/kernel/locking/locktorture.c
@@ -570,7 +570,7 @@ static void torture_rwsem_read_delay(struct torture_random_state *trsp)
/* We want a long delay occasionally to force massive contention. */
if (!(torture_random(trsp) %
- (cxt.nrealwriters_stress * 2000 * longdelay_ms)))
+ (cxt.nrealreaders_stress * 2000 * longdelay_ms)))
mdelay(longdelay_ms * 2);
else
mdelay(longdelay_ms / 2);
--
2.6.6
next prev parent reply other threads:[~2017-03-07 7:10 UTC|newest]
Thread overview: 37+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-03-07 5:03 [PATCH 0/5] locking Introduce range reader/writer lock Davidlohr Bueso
2017-03-07 5:03 ` [PATCH 1/5] locking: " Davidlohr Bueso
2017-03-09 11:03 ` Jan Kara
2017-03-28 10:00 ` Laurent Dufour
2017-03-28 16:39 ` Davidlohr Bueso
2017-03-28 16:58 ` Kirill A. Shutemov
2017-03-29 8:38 ` Laurent Dufour
2017-03-29 15:31 ` Davidlohr Bueso
2017-03-29 15:40 ` Kirill A. Shutemov
2017-03-29 16:10 ` Davidlohr Bueso
2017-04-03 14:19 ` Laurent Dufour
2017-04-03 15:26 ` Davidlohr Bueso
2017-04-03 16:06 ` Jan Kara
2017-04-04 15:31 ` Davidlohr Bueso
2017-03-29 8:56 ` Peter Zijlstra
2017-03-29 15:12 ` Davidlohr Bueso
2017-03-29 8:59 ` Peter Zijlstra
2017-03-29 9:08 ` Peter Zijlstra
2017-03-29 15:05 ` Davidlohr Bueso
2017-03-29 9:11 ` Peter Zijlstra
2017-03-29 9:44 ` Peter Zijlstra
2017-03-29 10:35 ` Peter Zijlstra
2017-03-29 10:49 ` Peter Zijlstra
2017-03-29 15:14 ` Davidlohr Bueso
2017-03-30 14:56 ` Laurent Dufour
2017-03-30 17:13 ` Davidlohr Bueso
2017-03-07 5:03 ` Davidlohr Bueso [this message]
2017-03-07 5:03 ` [PATCH 3/5] locking/locktorture: Fix num reader/writer corner cases Davidlohr Bueso
2017-03-07 5:03 ` [PATCH 4/5] locking/locktorture: Support range rwlocks Davidlohr Bueso
2017-03-07 5:03 ` [PATCH 5/5] staging/lustre: Use generic range rwlock Davidlohr Bueso
2017-03-07 6:05 ` Oleg Drokin
2017-03-07 6:05 ` [lustre-devel] " Oleg Drokin
2017-03-08 15:02 ` Davidlohr Bueso
2017-03-09 8:56 ` kbuild test robot
2017-03-09 8:56 ` [lustre-devel] " kbuild test robot
2017-03-09 14:40 ` kbuild test robot
2017-03-09 14:40 ` [lustre-devel] " kbuild test robot
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