Chris Wilson
50675a1f15
locking/lockdep: Fix overflow in presentation of average lock-time ...
[ Upstream commit a7ef9b28aa8d72a1656fa6f0a01bbd1493886317 ]
Though the number of lock-acquisitions is tracked as unsigned long, this
is passed as the divisor to div_s64() which interprets it as a s32,
giving nonsense values with more than 2 billion acquisitons. E.g.
acquisitions holdtime-min holdtime-max holdtime-total holdtime-avg
-------------------------------------------------------------------------
2350439395 0.07 353.38 649647067.36 0.-32
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: https://lore.kernel.org/r/20200725185110.11588-1-chris@chris-wilson.co.uk
Signed-off-by: Sasha Levin <sashal@kernel.org>
2020-09-03 11:21:18 +02:00
locking/lockdep: Avoid recursion in lockdep_count_{for,back}ward_deps()
2020-04-24 07:58:49 +02:00
lockdep: Limit static allocations if PROVE_LOCKING_SMALL is defined
2016-11-18 11:33:19 -08:00
locking/lockdep: Fix overflow in presentation of average lock-time
2020-09-03 11:21:18 +02:00
locktorture: Print ratio of acquisitions, not failures
2020-04-24 07:59:15 +02:00
locking/lglock: Remove lglock implementation
2016-09-22 15:25:56 +02:00
locking/mcs: Fix mcs_spin_lock() ordering
2016-02-29 10:02:41 +01:00
locking: avoid passing around 'thread_info' in mutex debugging code
2016-06-23 12:11:17 -07:00
Merge branch 'locking-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2016-07-25 12:41:29 -07:00
locking: avoid passing around 'thread_info' in mutex debugging code
2016-06-23 12:11:17 -07:00
Merge branch 'locking-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2016-07-25 12:41:29 -07:00
locking/osq_lock: Fix osq_lock queue corruption
2018-09-19 22:47:11 +02:00
locking/percpu-rwsem: Optimize readers and reduce global impact
2016-08-10 14:34:01 +02:00
locking/atomic, arch/qrwlock: Employ atomic_fetch_add_acquire()
2016-06-16 10:48:34 +02:00
locking/qspinlock, x86: Provide liveness guarantee
2018-12-21 14:11:34 +01:00
locking/qspinlock: Remove duplicate clear_pending() function from PV code
2018-12-21 14:11:34 +01:00
locking/pvstat: Separate wait_again and spurious wakeup stats
2016-08-10 14:16:02 +02:00
rtmutex: Cleanup deadlock detector debug logic
2014-06-21 22:05:30 +02:00
rtmutex: Cleanup deadlock detector debug logic
2014-06-21 22:05:30 +02:00
futex,rt_mutex: Restructure rt_mutex_finish_proxy_lock()
2019-03-13 14:05:01 -07:00
rtmutex: Cleanup deadlock detector debug logic
2014-06-21 22:05:30 +02:00
futex,rt_mutex: Restructure rt_mutex_finish_proxy_lock()
2019-03-13 14:05:01 -07:00
locking/rwsem-spinlock: Fix EINTR branch in __down_write_common()
2017-07-15 12:16:15 +02:00
locking/rwsem: Prevent decrement of reader count before increment
2019-05-21 18:48:55 +02:00
locking/rwsem: Add reader-owned state to the owner field
2016-06-08 15:16:59 +02:00
locking/rwsem: Protect all writes to owner by WRITE_ONCE()
2016-06-08 15:16:59 +02:00
locking/semaphore: Resolve some shadow warnings
2014-09-04 07:17:24 +02:00
spinlock: Add spin_lock_bh_nested()
2015-01-03 14:32:57 -05:00
locking/spinlock/debug: Fix various data races
2020-01-12 11:24:20 +01:00
50675a1f15