From: Guenter Roeck <linux@roeck-us.net>
To: Thomas Gleixner <tglx@linutronix.de>
Cc: LKML <linux-kernel@vger.kernel.org>,
Peter Zijlstra <peterz@infradead.org>,
Ingo Molnar <mingo@kernel.org>,
Juri Lelli <juri.lelli@redhat.com>,
Steven Rostedt <rostedt@goodmis.org>,
Daniel Bristot de Oliveira <bristot@redhat.com>,
Will Deacon <will@kernel.org>, Waiman Long <longman@redhat.com>,
Boqun Feng <boqun.feng@gmail.com>,
Sebastian Andrzej Siewior <bigeasy@linutronix.de>,
Davidlohr Bueso <dave@stgolabs.net>,
Mike Galbraith <efault@gmx.de>
Subject: Re: [patch V5 41/72] locking/ww_mutex: Gather mutex_waiter initialization
Date: Thu, 19 Aug 2021 09:54:09 -0700 [thread overview]
Message-ID: <20210819165409.GA2335652@roeck-us.net> (raw)
In-Reply-To: <20210815211304.281927514@linutronix.de>
Hi,
On Sun, Aug 15, 2021 at 11:28:39PM +0200, Thomas Gleixner wrote:
> From: Peter Zijlstra <peterz@infradead.org>
>
> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
> ---
This patch causes a large number of crashes with various architectures
if mutex debugging is enabled. Reverting it fixes the problem.
Example and bisect log attached.
Guenter
---
Crash:
[ 8.013526] 8<--- cut here ---
[ 8.013762] Unable to handle kernel NULL pointer dereference at virtual address 00000508
[ 8.013934] pgd = (ptrval)
[ 8.014146] [00000508] *pgd=00000000
[ 8.014552] Internal error: Oops: 5 [#1] ARM
[ 8.014879] CPU: 0 PID: 41 Comm: kworker/u2:1 Not tainted 5.14.0-rc6-next-20210819 #1
[ 8.015077] Hardware name: Generic DT based system
[ 8.015353] Workqueue: test-ww_mutex stress_inorder_work
[ 8.015598] PC is at __ww_mutex_check_waiters+0x5c/0xf0
[ 8.015696] LR is at lock_is_held_type+0xcc/0x1a0
[ 8.015777] pc : [<80155f8c>] lr : [<80b27fec>] psr: 20000113
[ 8.015873] sp : 81b6bd98 ip : 81b6bd60 fp : 81b6bdb4
[ 8.015951] r10: 81b6a000 r9 : 81b6be7c r8 : 00000000
[ 8.016032] r7 : 82411170 r6 : 82411198 r5 : 81b6be7c r4 : 81ae9e60
[ 8.016127] r3 : 00000001 r2 : 00000000 r1 : 00000500 r0 : 00000001
[ 8.016262] Flags: nzCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment none
[ 8.016380] Control: 00093177 Table: 40004000 DAC: 00000053
[ 8.016491] Register r0 information: non-paged memory
[ 8.016712] Register r1 information: non-paged memory
[ 8.016793] Register r2 information: NULL pointer
[ 8.016870] Register r3 information: non-paged memory
[ 8.016956] Register r4 information: non-slab/vmalloc memory
[ 8.017102] Register r5 information: non-slab/vmalloc memory
[ 8.017189] Register r6 information: slab kmalloc-512k start 82400000 pointer offset 70040 size 524288
[ 8.017566] Register r7 information: slab kmalloc-512k start 82400000 pointer offset 70000 size 524288
[ 8.017727] Register r8 information: NULL pointer
[ 8.017804] Register r9 information: non-slab/vmalloc memory
[ 8.017891] Register r10 information: non-slab/vmalloc memory
[ 8.017977] Register r11 information: non-slab/vmalloc memory
[ 8.018062] Register r12 information: non-slab/vmalloc memory
[ 8.018157] Process kworker/u2:1 (pid: 41, stack limit = 0x(ptrval))
[ 8.018323] Stack: (0x81b6bd98 to 0x81b6c000)
[ 8.018530] bd80: 82411170 82411174
[ 8.018726] bda0: 81b9c121 81b9c120 81b6be34 81b6bdb8 80b2d950 80155f3c 00000001 81b6be98
[ 8.018918] bdc0: 8016677c 81a80000 00000fb9 00000fff 81b6be04 81b6bde0 824111a4 80b27f2c
[ 8.019105] bde0: 8016677c c72ed19c 00000000 00000002 0000032e 00000000 81b6be34 81b6be08
[ 8.019287] be00: 8014c0dc c72ed19c 81b6be34 81b6be7c 82411170 8016677c 82400000 81a80000
[ 8.019469] be20: 00000fb9 00000fff 81b6be54 81b6be38 80b2ecfc 80b2cf4c 00000000 00000fb9
[ 8.019651] be40: 000005d7 82400000 81b6bee4 81b6be58 8016677c 80b2ecc4 00000001 00000000
[ 8.019832] be60: 8013431c 81b6be70 80164664 8013431c 81b6a000 81b201c0 00000000 81b9c120
[ 8.020018] be80: 00000566 00000fba 00010000 00000000 8101dcd0 00000000 8101dcd4 8156588c
[ 8.020200] bea0: 00000000 80e53ba4 81000000 0000146d 000004b5 c72ed19c 81807c00 81b201c0
[ 8.020382] bec0: 81b266e0 00000001 81807c00 81849500 810d4d84 81807c00 81b6bf44 81b6bee8
[ 8.020563] bee0: 8013431c 80166634 00000001 00000000 80134270 81807c00 81849535 00000000
[ 8.020745] bf00: 8170b310 81566124 00000000 80de0964 00000000 c72ed19c 80b32d94 81b266e0
[ 8.020934] bf20: 81807c00 81b266f8 81807c38 00000088 81b6a000 81807c00 81b6bf74 81b6bf48
[ 8.021117] bf40: 80134808 801340a4 00000000 81b340e0 81b6a000 819c9f80 801347ac 81b266e0
[ 8.021298] bf60: 00000000 818d1e6c 81b6bfac 81b6bf78 8013c5e4 801347b8 ffffe000 819c9fc4
[ 8.021478] bf80: 81b6bfac 81b340e0 8013c48c 00000000 00000000 00000000 00000000 00000000
[ 8.021658] bfa0: 00000000 81b6bfb0 80100118 8013c498 00000000 00000000 00000000 00000000
[ 8.021839] bfc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
[ 8.022019] bfe0: 00000000 00000000 00000000 00000000 00000013 00000000 00000000 00000000
[ 8.022185] Backtrace:
[ 8.022367] [<80155f30>] (__ww_mutex_check_waiters) from [<80b2d950>] (__ww_mutex_lock.constprop.0+0xa10/0xe4c)
[ 8.022609] r7:81b9c120 r6:81b9c121 r5:82411174 r4:82411170
[ 8.022721] [<80b2cf40>] (__ww_mutex_lock.constprop.0) from [<80b2ecfc>] (ww_mutex_lock+0x44/0xbc)
[ 8.022863] r10:00000fff r9:00000fb9 r8:81a80000 r7:82400000 r6:8016677c r5:82411170
[ 8.022968] r4:81b6be7c
[ 8.023010] [<80b2ecb8>] (ww_mutex_lock) from [<8016677c>] (stress_inorder_work+0x154/0x39c)
[ 8.023135] r7:82400000 r6:000005d7 r5:00000fb9 r4:00000000
[ 8.023228] [<80166628>] (stress_inorder_work) from [<8013431c>] (process_one_work+0x284/0x714)
[ 8.023374] r10:81807c00 r9:810d4d84 r8:81849500 r7:81807c00 r6:00000001 r5:81b266e0
[ 8.023489] r4:81b201c0
[ 8.023536] [<80134098>] (process_one_work) from [<80134808>] (worker_thread+0x5c/0x550)
[ 8.023672] r10:81807c00 r9:81b6a000 r8:00000088 r7:81807c38 r6:81b266f8 r5:81807c00
[ 8.023787] r4:81b266e0
[ 8.023837] [<801347ac>] (worker_thread) from [<8013c5e4>] (kthread+0x158/0x180)
[ 8.023965] r10:818d1e6c r9:00000000 r8:81b266e0 r7:801347ac r6:819c9f80 r5:81b6a000
[ 8.024080] r4:81b340e0 r3:00000000
[ 8.024140] [<8013c48c>] (kthread) from [<80100118>] (ret_from_fork+0x14/0x3c)
[ 8.024280] Exception stack(0x81b6bfb0 to 0x81b6bff8)
[ 8.024417] bfa0: 00000000 00000000 00000000 00000000
[ 8.024614] bfc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
[ 8.024797] bfe0: 00000000 00000000 00000000 00000000 00000013 00000000
[ 8.024937] r10:00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:8013c48c
[ 8.025068] r4:81b340e0
[ 8.025290] Code: 0a000015 e1d530be e3530000 0a00000d (e5913008)
[ 8.025869] ---[ end trace 4289e0554fe769f0 ]---
[ 8.026116] Kernel panic - not syncing: Fatal exception
---
bisect log:
# bad: [33e65b1f975cd2814fc0ea9617250fc4c1d7a553] Add linux-next specific files for 20210819
# good: [7c60610d476766e128cc4284bb6349732cbd6606] Linux 5.14-rc6
git bisect start 'HEAD' 'v5.14-rc6'
# good: [9350441ab026f2bb3760b33604c6961f91ee109e] Merge remote-tracking branch 'crypto/master'
git bisect good 9350441ab026f2bb3760b33604c6961f91ee109e
# good: [1f676083dea89f0f9fa898eeffa0dc39d22570fd] Merge remote-tracking branch 'spi/for-next'
git bisect good 1f676083dea89f0f9fa898eeffa0dc39d22570fd
# bad: [81ecf5c642ca990d8ad0c9540b9eee2f2dbba951] Merge remote-tracking branch 'staging/staging-next'
git bisect bad 81ecf5c642ca990d8ad0c9540b9eee2f2dbba951
# bad: [c3811532d39d915de6bc28957a90ce8eebf0da71] Merge remote-tracking branch 'usb/usb-next'
git bisect bad c3811532d39d915de6bc28957a90ce8eebf0da71
# bad: [4ee4149259cdcd1f835a860e5a7140e0b27826db] Merge remote-tracking branch 'rcu/rcu/next'
git bisect bad 4ee4149259cdcd1f835a860e5a7140e0b27826db
# bad: [a27fdfde0570b552d0ba088938c6cf5833e5dbe1] Merge branch 'locking/core'
git bisect bad a27fdfde0570b552d0ba088938c6cf5833e5dbe1
# good: [747ea3fa46d5c1c692433fdbc946e1c386a733b2] Merge branch 'perf/core'
git bisect good 747ea3fa46d5c1c692433fdbc946e1c386a733b2
# bad: [c0afb0ffc06e6b4e492a3b711f1fb32074f9949c] locking/ww_mutex: Gather mutex_waiter initialization
git bisect bad c0afb0ffc06e6b4e492a3b711f1fb32074f9949c
# good: [709e0b62869f625afd18edd79f190c38cb39dfb2] locking/rtmutex: Switch to from cmpxchg_*() to try_cmpxchg_*()
git bisect good 709e0b62869f625afd18edd79f190c38cb39dfb2
# good: [cbcebf5bd3d056d7a0ae332118888d867ac346c0] locking/lockdep: Reduce header dependencies in <linux/debug_locks.h>
git bisect good cbcebf5bd3d056d7a0ae332118888d867ac346c0
# good: [8282947f67345246b4a6344dbceb07484d3d4dad] locking/rwlock: Provide RT variant
git bisect good 8282947f67345246b4a6344dbceb07484d3d4dad
# good: [43d2d52d704e025518d35c3079fcbff744623166] locking/mutex: Move the 'struct mutex_waiter' definition from <linux/mutex.h> to the internal header
git bisect good 43d2d52d704e025518d35c3079fcbff744623166
# good: [ebf4c55c1ddbabaea120fe8d48ce25b4f5da93a1] locking/mutex: Make mutex::wait_lock raw
git bisect good ebf4c55c1ddbabaea120fe8d48ce25b4f5da93a1
# good: [cf702eddcd03dca3184947170930bf284aea27e9] locking/ww_mutex: Simplify lockdep annotations
git bisect good cf702eddcd03dca3184947170930bf284aea27e9
# first bad commit: [c0afb0ffc06e6b4e492a3b711f1fb32074f9949c] locking/ww_mutex: Gather mutex_waiter initialization
next prev parent reply other threads:[~2021-08-19 16:54 UTC|newest]
Thread overview: 160+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-08-15 21:27 [patch V5 00/72] locking, sched: The PREEMPT-RT locking infrastructure Thomas Gleixner
2021-08-15 21:27 ` [patch V5 01/72] locking/local_lock: Add missing owner initialization Thomas Gleixner
2021-08-17 20:14 ` [tip: locking/core] " tip-bot2 for Thomas Gleixner
2021-08-15 21:27 ` [patch V5 02/72] locking/rtmutex: Set proper wait context for lockdep Thomas Gleixner
2021-08-17 20:14 ` [tip: locking/core] " tip-bot2 for Thomas Gleixner
2021-08-15 21:27 ` [patch V5 03/72] sched: Split out the wakeup state check Thomas Gleixner
2021-08-17 20:14 ` [tip: locking/core] sched/wakeup: Split out the wakeup ->__state check tip-bot2 for Thomas Gleixner
2021-08-15 21:27 ` [patch V5 04/72] sched: Introduce TASK_RTLOCK_WAIT Thomas Gleixner
2021-08-17 20:14 ` [tip: locking/core] sched/wakeup: Introduce the TASK_RTLOCK_WAIT state bit tip-bot2 for Thomas Gleixner
2021-08-15 21:27 ` [patch V5 05/72] sched: Reorganize current::__state helpers Thomas Gleixner
2021-08-17 20:14 ` [tip: locking/core] sched/wakeup: Reorganize the " tip-bot2 for Thomas Gleixner
2021-08-15 21:27 ` [patch V5 06/72] sched: Prepare for RT sleeping spin/rwlocks Thomas Gleixner
2021-08-17 20:14 ` [tip: locking/core] sched/wakeup: " tip-bot2 for Thomas Gleixner
2021-08-15 21:27 ` [patch V5 07/72] sched: Rework the __schedule() preempt argument Thomas Gleixner
2021-08-17 20:14 ` [tip: locking/core] sched/core: " tip-bot2 for Thomas Gleixner
2021-08-15 21:27 ` [patch V5 08/72] sched: Provide schedule point for RT locks Thomas Gleixner
2021-08-17 20:14 ` [tip: locking/core] sched/core: Provide a scheduling " tip-bot2 for Thomas Gleixner
2021-08-15 21:27 ` [patch V5 09/72] sched/wake_q: Provide WAKE_Q_HEAD_INITIALIZER Thomas Gleixner
2021-08-17 20:14 ` [tip: locking/core] sched/wake_q: Provide WAKE_Q_HEAD_INITIALIZER() tip-bot2 for Thomas Gleixner
2021-08-15 21:27 ` [patch V5 10/72] media/atomisp: Use lockdep instead of *mutex_is_locked() Thomas Gleixner
2021-08-17 20:14 ` [tip: locking/core] " tip-bot2 for Peter Zijlstra
2021-08-15 21:27 ` [patch V5 11/72] rtmutex: Remove rt_mutex_is_locked() Thomas Gleixner
2021-08-17 20:14 ` [tip: locking/core] locking/rtmutex: " tip-bot2 for Peter Zijlstra
2021-08-15 21:27 ` [patch V5 12/72] rtmutex: Convert macros to inlines Thomas Gleixner
2021-08-17 20:14 ` [tip: locking/core] locking/rtmutex: " tip-bot2 for Sebastian Andrzej Siewior
2021-08-15 21:27 ` [patch V5 13/72] rtmutex: Switch to try_cmpxchg() Thomas Gleixner
2021-08-17 20:14 ` [tip: locking/core] locking/rtmutex: Switch to from cmpxchg_*() to try_cmpxchg_*() tip-bot2 for Thomas Gleixner
2021-08-15 21:27 ` [patch V5 14/72] rtmutex: Split API and implementation Thomas Gleixner
2021-08-17 20:14 ` [tip: locking/core] locking/rtmutex: Split API from implementation tip-bot2 for Thomas Gleixner
2021-08-15 21:27 ` [patch V5 15/72] rtmutex: Split out the inner parts of struct rtmutex Thomas Gleixner
2021-08-17 20:14 ` [tip: locking/core] locking/rtmutex: Split out the inner parts of 'struct rtmutex' tip-bot2 for Peter Zijlstra
2021-08-15 21:28 ` [patch V5 16/72] locking/rtmutex: Provide rt_mutex_slowlock_locked() Thomas Gleixner
2021-08-17 20:14 ` [tip: locking/core] " tip-bot2 for Thomas Gleixner
2021-08-15 21:28 ` [patch V5 17/72] rtmutex: Provide rt_mutex_base_is_locked() Thomas Gleixner
2021-08-17 20:14 ` [tip: locking/core] locking/rtmutex: " tip-bot2 for Thomas Gleixner
2021-08-15 21:28 ` [patch V5 18/72] locking: Add base code for RT rw_semaphore and rwlock Thomas Gleixner
2021-08-16 5:00 ` Davidlohr Bueso
2021-08-17 20:14 ` [tip: locking/core] locking/rt: " tip-bot2 for Thomas Gleixner
2021-08-15 21:28 ` [patch V5 19/72] locking/rwsem: Add rtmutex based R/W semaphore implementation Thomas Gleixner
2021-08-17 20:14 ` [tip: locking/core] " tip-bot2 for Thomas Gleixner
2021-08-15 21:28 ` [patch V5 20/72] locking/rtmutex: Add wake_state to rt_mutex_waiter Thomas Gleixner
2021-08-17 20:14 ` [tip: locking/core] " tip-bot2 for Thomas Gleixner
2021-08-15 21:28 ` [patch V5 21/72] locking/rtmutex: Provide rt_wake_q and helpers Thomas Gleixner
2021-08-17 20:14 ` [tip: locking/core] locking/rtmutex: Provide rt_wake_q_head " tip-bot2 for Thomas Gleixner
2021-08-15 21:28 ` [patch V5 22/72] locking/rtmutex: Use rt_mutex_wake_q_head Thomas Gleixner
2021-08-17 20:14 ` [tip: locking/core] " tip-bot2 for Thomas Gleixner
2021-08-15 21:28 ` [patch V5 23/72] locking/rtmutex: Prepare RT rt_mutex_wake_q for RT locks Thomas Gleixner
2021-08-17 20:14 ` [tip: locking/core] " tip-bot2 for Thomas Gleixner
2021-08-15 21:28 ` [patch V5 24/72] locking/rtmutex: Guard regular sleeping locks specific functions Thomas Gleixner
2021-08-17 20:14 ` [tip: locking/core] " tip-bot2 for Thomas Gleixner
2021-08-15 21:28 ` [patch V5 25/72] locking/spinlock: Split the lock types header Thomas Gleixner
2021-08-17 20:14 ` [tip: locking/core] locking/spinlock: Split the lock types header, and move the raw types into <linux/spinlock_types_raw.h> tip-bot2 for Thomas Gleixner
2021-08-15 21:28 ` [patch V5 26/72] locking/rtmutex: Prevent future include recursion hell Thomas Gleixner
2021-08-17 20:14 ` [tip: locking/core] " tip-bot2 for Sebastian Andrzej Siewior
2021-08-15 21:28 ` [patch V5 27/72] locking/lockdep: Reduce includes in debug_locks.h Thomas Gleixner
2021-08-17 20:14 ` [tip: locking/core] locking/lockdep: Reduce header dependencies in <linux/debug_locks.h> tip-bot2 for Sebastian Andrzej Siewior
2021-08-15 21:28 ` [patch V5 28/72] rbtree: Split out the rbtree type definitions Thomas Gleixner
2021-08-17 20:14 ` [tip: locking/core] rbtree: Split out the rbtree type definitions into <linux/rbtree_types.h> tip-bot2 for Sebastian Andrzej Siewior
2021-08-15 21:28 ` [patch V5 29/72] locking/rtmutex: Include only rbtree types Thomas Gleixner
2021-08-17 20:14 ` [tip: locking/core] locking/rtmutex: Reduce <linux/rtmutex.h> header dependencies, only include <linux/rbtree_types.h> tip-bot2 for Sebastian Andrzej Siewior
2021-08-15 21:28 ` [patch V5 30/72] locking/spinlock: Provide RT specific spinlock type Thomas Gleixner
2021-08-17 20:14 ` [tip: locking/core] locking/spinlock: Provide RT specific spinlock_t tip-bot2 for Thomas Gleixner
2021-08-15 21:28 ` [patch V5 31/72] locking/spinlock: Provide RT variant header Thomas Gleixner
2021-08-17 20:14 ` [tip: locking/core] locking/spinlock: Provide RT variant header: <linux/spinlock_rt.h> tip-bot2 for Thomas Gleixner
2021-08-15 21:28 ` [patch V5 32/72] locking/rtmutex: Provide the spin/rwlock core lock function Thomas Gleixner
2021-08-17 20:14 ` [tip: locking/core] " tip-bot2 for Thomas Gleixner
2021-08-27 17:21 ` [patch V5 32/72] " Boqun Feng
2021-08-27 20:03 ` Thomas Gleixner
2021-08-15 21:28 ` [patch V5 33/72] locking/spinlock: Provide RT variant Thomas Gleixner
2021-08-17 20:14 ` [tip: locking/core] " tip-bot2 for Thomas Gleixner
2021-08-15 21:28 ` [patch V5 34/72] locking/rwlock: " Thomas Gleixner
2021-08-17 20:14 ` [tip: locking/core] " tip-bot2 for Thomas Gleixner
2021-09-11 2:59 ` [patch V5 34/72] " Xiaoming Ni
2021-09-13 6:28 ` Sebastian Andrzej Siewior
2021-08-15 21:28 ` [patch V5 35/72] locking/rtmutex: Squash !RT tasks to DEFAULT_PRIO Thomas Gleixner
2021-08-17 20:14 ` [tip: locking/core] " tip-bot2 for Peter Zijlstra
2021-08-15 21:28 ` [patch V5 36/72] locking/mutex: Consolidate core headers Thomas Gleixner
2021-08-17 20:14 ` [tip: locking/core] locking/mutex: Consolidate core headers, remove kernel/locking/mutex-debug.h tip-bot2 for Thomas Gleixner
2021-08-15 21:28 ` [patch V5 37/72] locking/mutex: Move waiter to core header Thomas Gleixner
2021-08-17 20:14 ` [tip: locking/core] locking/mutex: Move the 'struct mutex_waiter' definition from <linux/mutex.h> to the internal header tip-bot2 for Thomas Gleixner
2021-08-15 21:28 ` [patch V5 38/72] locking/ww_mutex: Move ww_mutex declarations into ww_mutex.h Thomas Gleixner
2021-08-17 20:14 ` [tip: locking/core] locking/ww_mutex: Move the ww_mutex definitions from <linux/mutex.h> into <linux/ww_mutex.h> tip-bot2 for Thomas Gleixner
2021-08-15 21:28 ` [patch V5 39/72] locking/mutex: Make mutex::wait_lock raw Thomas Gleixner
2021-08-17 20:14 ` [tip: locking/core] " tip-bot2 for Thomas Gleixner
2021-08-15 21:28 ` [patch V5 40/72] locking/ww_mutex: Simplify lockdep annotation Thomas Gleixner
2021-08-17 20:14 ` [tip: locking/core] locking/ww_mutex: Simplify lockdep annotations tip-bot2 for Peter Zijlstra
2021-08-15 21:28 ` [patch V5 41/72] locking/ww_mutex: Gather mutex_waiter initialization Thomas Gleixner
2021-08-17 20:14 ` [tip: locking/core] " tip-bot2 for Peter Zijlstra
2021-08-19 16:54 ` Guenter Roeck [this message]
2021-08-19 18:08 ` [PATCH] locking/ww_mutex: Initialize waiter.ww_ctx properly Sebastian Andrzej Siewior
2021-08-19 18:22 ` Peter Zijlstra
2021-08-19 18:32 ` Sebastian Andrzej Siewior
2021-08-19 17:51 ` [patch V5 41/72] locking/ww_mutex: Gather mutex_waiter initialization Sebastian Andrzej Siewior
2021-08-19 18:17 ` Peter Zijlstra
2021-08-19 18:28 ` Sebastian Andrzej Siewior
2021-08-19 19:30 ` [PATCH v2] locking/ww_mutex: Initialize waiter.ww_ctx properly Sebastian Andrzej Siewior
2021-08-20 10:20 ` [tip: locking/core] " tip-bot2 for Sebastian Andrzej Siewior
2021-08-15 21:28 ` [patch V5 42/72] locking/ww_mutex: Split up ww_mutex_unlock() Thomas Gleixner
2021-08-17 20:14 ` [tip: locking/core] " tip-bot2 for Peter Zijlstra (Intel)
2021-08-15 21:28 ` [patch V5 43/72] locking/ww_mutex: Split W/W implementation logic Thomas Gleixner
2021-08-17 20:14 ` [tip: locking/core] locking/ww_mutex: Split out the W/W implementation logic into kernel/locking/ww_mutex.h tip-bot2 for Peter Zijlstra (Intel)
2021-08-15 21:28 ` [patch V5 44/72] locking/ww_mutex: Remove __sched annotation Thomas Gleixner
2021-08-17 20:14 ` [tip: locking/core] locking/ww_mutex: Remove the __sched annotation from ww_mutex APIs tip-bot2 for Peter Zijlstra
2021-08-15 21:28 ` [patch V5 45/72] locking/ww_mutex: Abstract waiter iteration Thomas Gleixner
2021-08-17 20:14 ` [tip: locking/core] locking/ww_mutex: Abstract out the " tip-bot2 for Peter Zijlstra
2021-08-15 21:28 ` [patch V5 46/72] locking/ww_mutex: Abstract waiter enqueueing Thomas Gleixner
2021-08-17 20:14 ` [tip: locking/core] locking/ww_mutex: Abstract out " tip-bot2 for Peter Zijlstra
2021-08-15 21:28 ` [patch V5 47/72] locking/ww_mutex: Abstract mutex accessors Thomas Gleixner
2021-08-17 20:14 ` [tip: locking/core] locking/ww_mutex: Abstract out " tip-bot2 for Peter Zijlstra
2021-08-15 21:28 ` [patch V5 48/72] locking/ww_mutex: Abstract mutex types Thomas Gleixner
2021-08-17 20:14 ` [tip: locking/core] locking/ww_mutex: Abstract out " tip-bot2 for Peter Zijlstra
2021-08-15 21:28 ` [patch V5 49/72] locking/ww_mutex: Abstract internal lock access Thomas Gleixner
2021-08-17 20:14 ` [tip: locking/core] locking/ww_mutex: Abstract out internal lock accesses tip-bot2 for Thomas Gleixner
2021-08-15 21:28 ` [patch V5 50/72] locking/ww_mutex: Implement rt_mutex accessors Thomas Gleixner
2021-08-17 20:14 ` [tip: locking/core] " tip-bot2 for Peter Zijlstra
2021-08-15 21:28 ` [patch V5 51/72] locking/ww_mutex: Add RT priority to W/W order Thomas Gleixner
2021-08-17 20:14 ` [tip: locking/core] " tip-bot2 for Peter Zijlstra
2021-08-15 21:28 ` [patch V5 52/72] locking/ww_mutex: Add rt_mutex based lock type and accessors Thomas Gleixner
2021-08-17 20:14 ` [tip: locking/core] " tip-bot2 for Peter Zijlstra
2021-08-15 21:28 ` [patch V5 53/72] locking/rtmutex: Extend the rtmutex core to support ww_mutex Thomas Gleixner
2021-08-17 20:14 ` [tip: locking/core] " tip-bot2 for Peter Zijlstra
2021-08-15 21:29 ` [patch V5 54/72] locking/ww_mutex: Implement rtmutex based ww_mutex API functions Thomas Gleixner
2021-08-17 20:14 ` [tip: locking/core] " tip-bot2 for Peter Zijlstra
2021-08-15 21:29 ` [patch V5 55/72] locking/rtmutex: Add mutex variant for RT Thomas Gleixner
2021-08-17 20:14 ` [tip: locking/core] " tip-bot2 for Thomas Gleixner
2021-08-15 21:29 ` [patch V5 56/72] lib/test_lockup: Adapt to changed variables Thomas Gleixner
2021-08-17 20:14 ` [tip: locking/core] " tip-bot2 for Sebastian Andrzej Siewior
2021-08-15 21:29 ` [patch V5 57/72] futex: Validate waiter correctly in futex_proxy_trylock_atomic() Thomas Gleixner
2021-08-17 20:14 ` [tip: locking/core] " tip-bot2 for Thomas Gleixner
2021-08-15 21:29 ` [patch V5 58/72] futex: Cleanup stale comments Thomas Gleixner
2021-08-17 20:14 ` [tip: locking/core] futex: Clean up " tip-bot2 for Thomas Gleixner
2021-08-15 21:29 ` [patch V5 59/72] futex: Clarify futex_requeue() PI handling Thomas Gleixner
2021-08-17 20:14 ` [tip: locking/core] " tip-bot2 for Thomas Gleixner
2021-08-15 21:29 ` [patch V5 60/72] futex: Remove bogus condition for requeue PI Thomas Gleixner
2021-08-17 20:14 ` [tip: locking/core] " tip-bot2 for Thomas Gleixner
2021-08-15 21:29 ` [patch V5 61/72] futex: Correct the number of requeued waiters for PI Thomas Gleixner
2021-08-17 20:14 ` [tip: locking/core] " tip-bot2 for Thomas Gleixner
2021-08-15 21:29 ` [patch V5 62/72] futex: Restructure futex_requeue() Thomas Gleixner
2021-08-17 20:14 ` [tip: locking/core] " tip-bot2 for Thomas Gleixner
2021-08-15 21:29 ` [patch V5 63/72] futex: Clarify comment in futex_requeue() Thomas Gleixner
2021-08-17 20:14 ` [tip: locking/core] " tip-bot2 for Thomas Gleixner
2021-08-15 21:29 ` [patch V5 64/72] futex: Reorder sanity checks " Thomas Gleixner
2021-08-17 20:14 ` [tip: locking/core] " tip-bot2 for Thomas Gleixner
2021-08-15 21:29 ` [patch V5 65/72] futex: Simplify handle_early_requeue_pi_wakeup() Thomas Gleixner
2021-08-17 20:14 ` [tip: locking/core] " tip-bot2 for Thomas Gleixner
2021-08-15 21:29 ` [patch V5 66/72] futex: Prevent requeue_pi() lock nesting issue on RT Thomas Gleixner
2021-08-17 20:13 ` [tip: locking/core] " tip-bot2 for Thomas Gleixner
2021-08-15 21:29 ` [patch V5 67/72] rtmutex: Prevent lockdep false positive with PI futexes Thomas Gleixner
2021-08-17 20:13 ` [tip: locking/core] locking/rtmutex: " tip-bot2 for Thomas Gleixner
2021-08-15 21:29 ` [patch V5 68/72] preempt: Adjust PREEMPT_LOCK_OFFSET for RT Thomas Gleixner
2021-08-17 20:13 ` [tip: locking/core] " tip-bot2 for Thomas Gleixner
2021-08-15 21:29 ` [patch V5 69/72] locking/rtmutex: Implement equal priority lock stealing Thomas Gleixner
2021-08-17 20:13 ` [tip: locking/core] " tip-bot2 for Gregory Haskins
2021-08-15 21:29 ` [patch V5 70/72] locking/rtmutex: Add adaptive spinwait mechanism Thomas Gleixner
2021-08-17 20:13 ` [tip: locking/core] " tip-bot2 for Steven Rostedt
2021-08-15 21:29 ` [patch V5 71/72] locking/spinlock/rt: Prepare for RT local_lock Thomas Gleixner
2021-08-17 20:13 ` [tip: locking/core] " tip-bot2 for Thomas Gleixner
2021-08-15 21:29 ` [patch V5 72/72] locking/local_lock: Add PREEMPT_RT support Thomas Gleixner
2021-08-17 20:13 ` [tip: locking/core] " tip-bot2 for Thomas Gleixner
2021-08-16 9:21 ` [patch V5 00/72] locking, sched: The PREEMPT-RT locking infrastructure Sebastian Andrzej Siewior
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20210819165409.GA2335652@roeck-us.net \
--to=linux@roeck-us.net \
--cc=bigeasy@linutronix.de \
--cc=boqun.feng@gmail.com \
--cc=bristot@redhat.com \
--cc=dave@stgolabs.net \
--cc=efault@gmx.de \
--cc=juri.lelli@redhat.com \
--cc=linux-kernel@vger.kernel.org \
--cc=longman@redhat.com \
--cc=mingo@kernel.org \
--cc=peterz@infradead.org \
--cc=rostedt@goodmis.org \
--cc=tglx@linutronix.de \
--cc=will@kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.