From: "Ahmed S. Darwish" <a.darwish@linutronix.de> To: Peter Zijlstra <peterz@infradead.org>, Ingo Molnar <mingo@redhat.com>, Will Deacon <will@kernel.org> Cc: Thomas Gleixner <tglx@linutronix.de>, "Paul E. McKenney" <paulmck@kernel.org>, "Sebastian A. Siewior" <bigeasy@linutronix.de>, Steven Rostedt <rostedt@goodmis.org>, LKML <linux-kernel@vger.kernel.org>, "Ahmed S. Darwish" <a.darwish@linutronix.de> Subject: [PATCH v4 04/24] seqlock: Reorder seqcount_t and seqlock_t API definitions Date: Mon, 20 Jul 2020 17:55:10 +0200 Message-ID: <20200720155530.1173732-5-a.darwish@linutronix.de> (raw) In-Reply-To: <20200720155530.1173732-1-a.darwish@linutronix.de> The seqlock.h seqcount_t and seqlock_t API definitions are presented in the chronological order of their development rather than the order that makes most sense to readers. This makes it hard to follow and understand the header file code. Group and reorder all of the exported seqlock.h functions according to their function. First, group together the seqcount_t standard read path functions: - __read_seqcount_begin() - raw_read_seqcount_begin() - read_seqcount_begin() since each function is implemented exactly in terms of the one above it. Then, group the special-case seqcount_t readers on their own as: - raw_read_seqcount() - raw_seqcount_begin() since the only difference between the two functions is that the second one masks the sequence counter LSB while the first one does not. Note that raw_seqcount_begin() can actually be implemented in terms of raw_read_seqcount(), which will be done in a follow-up commit. Then, group the seqcount_t write path functions, instead of injecting unrelated seqcount_t latch functions between them, and order them as: - raw_write_seqcount_begin() - raw_write_seqcount_end() - write_seqcount_begin_nested() - write_seqcount_begin() - write_seqcount_end() - raw_write_seqcount_barrier() - write_seqcount_invalidate() which is the expected natural order. This also isolates the seqcount_t latch functions into their own area, at the end of the sequence counters section, and before jumping to the next one: sequential locks (seqlock_t). Do a similar grouping and reordering for seqlock_t "locking" readers vs. the "conditionally locking or lockless" ones. No implementation code was changed in any of the reordering above. Signed-off-by: Ahmed S. Darwish <a.darwish@linutronix.de> --- include/linux/seqlock.h | 174 ++++++++++++++++++++-------------------- 1 file changed, 86 insertions(+), 88 deletions(-) diff --git a/include/linux/seqlock.h b/include/linux/seqlock.h index d724b5e5408d..4c1456008d89 100644 --- a/include/linux/seqlock.h +++ b/include/linux/seqlock.h @@ -128,23 +128,6 @@ static inline unsigned __read_seqcount_begin(const seqcount_t *s) return ret; } -/** - * raw_read_seqcount - Read the raw seqcount - * @s: pointer to seqcount_t - * Returns: count to be passed to read_seqcount_retry - * - * raw_read_seqcount opens a read critical section of the given - * seqcount without any lockdep checking and without checking or - * masking the LSB. Calling code is responsible for handling that. - */ -static inline unsigned raw_read_seqcount(const seqcount_t *s) -{ - unsigned ret = READ_ONCE(s->sequence); - smp_rmb(); - kcsan_atomic_next(KCSAN_SEQLOCK_REGION_MAX); - return ret; -} - /** * raw_read_seqcount_begin - start seq-read critical section w/o lockdep * @s: pointer to seqcount_t @@ -176,6 +159,23 @@ static inline unsigned read_seqcount_begin(const seqcount_t *s) return raw_read_seqcount_begin(s); } +/** + * raw_read_seqcount - Read the raw seqcount + * @s: pointer to seqcount_t + * Returns: count to be passed to read_seqcount_retry + * + * raw_read_seqcount opens a read critical section of the given + * seqcount without any lockdep checking and without checking or + * masking the LSB. Calling code is responsible for handling that. + */ +static inline unsigned raw_read_seqcount(const seqcount_t *s) +{ + unsigned ret = READ_ONCE(s->sequence); + smp_rmb(); + kcsan_atomic_next(KCSAN_SEQLOCK_REGION_MAX); + return ret; +} + /** * raw_seqcount_begin - begin a seq-read critical section * @s: pointer to seqcount_t @@ -234,8 +234,6 @@ static inline int read_seqcount_retry(const seqcount_t *s, unsigned start) return __read_seqcount_retry(s, start); } - - static inline void raw_write_seqcount_begin(seqcount_t *s) { kcsan_nestable_atomic_begin(); @@ -250,6 +248,23 @@ static inline void raw_write_seqcount_end(seqcount_t *s) kcsan_nestable_atomic_end(); } +static inline void write_seqcount_begin_nested(seqcount_t *s, int subclass) +{ + raw_write_seqcount_begin(s); + seqcount_acquire(&s->dep_map, subclass, 0, _RET_IP_); +} + +static inline void write_seqcount_begin(seqcount_t *s) +{ + write_seqcount_begin_nested(s, 0); +} + +static inline void write_seqcount_end(seqcount_t *s) +{ + seqcount_release(&s->dep_map, _RET_IP_); + raw_write_seqcount_end(s); +} + /** * raw_write_seqcount_barrier - do a seq write barrier * @s: pointer to seqcount_t @@ -300,6 +315,21 @@ static inline void raw_write_seqcount_barrier(seqcount_t *s) kcsan_nestable_atomic_end(); } +/** + * write_seqcount_invalidate - invalidate in-progress read-side seq operations + * @s: pointer to seqcount_t + * + * After write_seqcount_invalidate, no read-side seq operations will complete + * successfully and see data older than this. + */ +static inline void write_seqcount_invalidate(seqcount_t *s) +{ + smp_wmb(); + kcsan_nestable_atomic_begin(); + s->sequence+=2; + kcsan_nestable_atomic_end(); +} + static inline int raw_read_seqcount_latch(seqcount_t *s) { /* Pairs with the first smp_wmb() in raw_write_seqcount_latch() */ @@ -395,38 +425,6 @@ static inline void raw_write_seqcount_latch(seqcount_t *s) smp_wmb(); /* increment "sequence" before following stores */ } -static inline void write_seqcount_begin_nested(seqcount_t *s, int subclass) -{ - raw_write_seqcount_begin(s); - seqcount_acquire(&s->dep_map, subclass, 0, _RET_IP_); -} - -static inline void write_seqcount_begin(seqcount_t *s) -{ - write_seqcount_begin_nested(s, 0); -} - -static inline void write_seqcount_end(seqcount_t *s) -{ - seqcount_release(&s->dep_map, _RET_IP_); - raw_write_seqcount_end(s); -} - -/** - * write_seqcount_invalidate - invalidate in-progress read-side seq operations - * @s: pointer to seqcount_t - * - * After write_seqcount_invalidate, no read-side seq operations will complete - * successfully and see data older than this. - */ -static inline void write_seqcount_invalidate(seqcount_t *s) -{ - smp_wmb(); - kcsan_nestable_atomic_begin(); - s->sequence+=2; - kcsan_nestable_atomic_end(); -} - /* * Sequential locks (seqlock_t) * @@ -555,6 +553,43 @@ static inline void read_sequnlock_excl(seqlock_t *sl) spin_unlock(&sl->lock); } +static inline void read_seqlock_excl_bh(seqlock_t *sl) +{ + spin_lock_bh(&sl->lock); +} + +static inline void read_sequnlock_excl_bh(seqlock_t *sl) +{ + spin_unlock_bh(&sl->lock); +} + +static inline void read_seqlock_excl_irq(seqlock_t *sl) +{ + spin_lock_irq(&sl->lock); +} + +static inline void read_sequnlock_excl_irq(seqlock_t *sl) +{ + spin_unlock_irq(&sl->lock); +} + +static inline unsigned long __read_seqlock_excl_irqsave(seqlock_t *sl) +{ + unsigned long flags; + + spin_lock_irqsave(&sl->lock, flags); + return flags; +} + +#define read_seqlock_excl_irqsave(lock, flags) \ + do { flags = __read_seqlock_excl_irqsave(lock); } while (0) + +static inline void +read_sequnlock_excl_irqrestore(seqlock_t *sl, unsigned long flags) +{ + spin_unlock_irqrestore(&sl->lock, flags); +} + /** * read_seqbegin_or_lock - begin a sequence number check or locking block * @lock: sequence lock @@ -584,43 +619,6 @@ static inline void done_seqretry(seqlock_t *lock, int seq) read_sequnlock_excl(lock); } -static inline void read_seqlock_excl_bh(seqlock_t *sl) -{ - spin_lock_bh(&sl->lock); -} - -static inline void read_sequnlock_excl_bh(seqlock_t *sl) -{ - spin_unlock_bh(&sl->lock); -} - -static inline void read_seqlock_excl_irq(seqlock_t *sl) -{ - spin_lock_irq(&sl->lock); -} - -static inline void read_sequnlock_excl_irq(seqlock_t *sl) -{ - spin_unlock_irq(&sl->lock); -} - -static inline unsigned long __read_seqlock_excl_irqsave(seqlock_t *sl) -{ - unsigned long flags; - - spin_lock_irqsave(&sl->lock, flags); - return flags; -} - -#define read_seqlock_excl_irqsave(lock, flags) \ - do { flags = __read_seqlock_excl_irqsave(lock); } while (0) - -static inline void -read_sequnlock_excl_irqrestore(seqlock_t *sl, unsigned long flags) -{ - spin_unlock_irqrestore(&sl->lock, flags); -} - static inline unsigned long read_seqbegin_or_lock_irqsave(seqlock_t *lock, int *seq) { -- 2.20.1
next prev parent reply index Thread overview: 258+ messages / expand[flat|nested] mbox.gz Atom feed top 2020-05-19 21:45 [PATCH v1 00/25] seqlock: Extend seqcount API with associated locks Ahmed S. Darwish 2020-05-19 21:45 ` [PATCH v1 01/25] net: core: device_rename: Use rwsem instead of a seqcount Ahmed S. Darwish 2020-05-19 22:01 ` Stephen Hemminger 2020-05-19 22:23 ` Thomas Gleixner 2020-05-19 23:11 ` Stephen Hemminger 2020-05-19 23:42 ` Thomas Gleixner 2020-05-20 0:06 ` Stephen Hemminger 2020-05-20 1:55 ` Thomas Gleixner 2020-05-20 2:57 ` David Miller 2020-05-20 3:18 ` Eric Dumazet 2020-05-20 4:36 ` Stephen Hemminger 2020-05-20 19:37 ` Thomas Gleixner 2020-05-20 21:36 ` Stephen Hemminger 2020-05-20 2:01 ` Eric Dumazet 2020-05-20 6:42 ` Ahmed S. Darwish 2020-05-20 12:51 ` Eric Dumazet 2020-06-03 14:33 ` Ahmed S. Darwish 2020-05-20 14:37 ` Dan Carpenter 2020-05-25 16:22 ` Ahmed S. Darwish 2020-05-19 21:45 ` [PATCH v1 02/25] mm/swap: Don't abuse the seqcount latching API Ahmed S. Darwish 2020-05-20 12:22 ` Konstantin Khlebnikov 2020-05-20 13:05 ` Peter Zijlstra 2020-05-22 14:57 ` Peter Zijlstra 2020-05-22 15:17 ` Sebastian A. Siewior 2020-05-22 16:23 ` Peter Zijlstra 2020-05-25 15:24 ` Ahmed S. Darwish 2020-05-25 15:45 ` Peter Zijlstra 2020-05-25 16:10 ` John Ogness 2020-09-10 15:08 ` [tip: locking/core] mm/swap: Do not abuse the seqcount_t " tip-bot2 for Ahmed S. Darwish 2020-05-19 21:45 ` [PATCH v1 03/25] net: phy: fixed_phy: Remove unused seqcount Ahmed S. Darwish 2020-05-19 21:45 ` [PATCH v1 04/25] block: nr_sects_write(): Disable preemption on seqcount write Ahmed S. Darwish 2020-05-22 16:39 ` Peter Zijlstra 2020-05-25 9:56 ` Ahmed S. Darwish [not found] ` <20200522001237.A00E8206BE@mail.kernel.org> 2020-05-25 10:12 ` Ahmed S. Darwish 2020-05-19 21:45 ` [PATCH v1 05/25] u64_stats: Document writer non-preemptibility requirement Ahmed S. Darwish 2020-05-19 21:45 ` [PATCH v1 06/25] dma-buf: Remove custom seqcount lockdep class key Ahmed S. Darwish 2020-05-19 21:45 ` [PATCH v1 07/25] lockdep: Add preemption disabled assertion API Ahmed S. Darwish 2020-05-22 17:55 ` Peter Zijlstra 2020-05-23 14:59 ` Sebastian A. Siewior 2020-05-23 22:41 ` Peter Zijlstra 2020-05-24 10:50 ` Sebastian A. Siewior 2020-05-25 10:22 ` Peter Zijlstra 2020-05-26 0:52 ` Ahmed S. Darwish 2020-05-26 8:13 ` Peter Zijlstra 2020-05-26 9:45 ` Ahmed S. Darwish 2020-06-03 15:30 ` Ahmed S. Darwish 2020-05-19 21:45 ` [PATCH v1 08/25] seqlock: lockdep assert non-preemptibility on seqcount_t write Ahmed S. Darwish 2020-05-19 21:45 ` [PATCH v1 09/25] Documentation: locking: Describe seqlock design and usage Ahmed S. Darwish 2020-05-22 18:01 ` Peter Zijlstra 2020-05-22 22:24 ` Steven Rostedt 2020-05-25 10:50 ` Ahmed S. Darwish 2020-05-25 11:02 ` Ahmed S. Darwish 2020-05-19 21:45 ` [PATCH v1 10/25] seqlock: Add RST directives to kernel-doc code samples and notes Ahmed S. Darwish 2020-05-22 18:02 ` Peter Zijlstra 2020-05-22 18:03 ` Peter Zijlstra 2020-05-22 18:26 ` Thomas Gleixner 2020-05-22 18:32 ` Peter Zijlstra 2020-05-25 9:36 ` Ahmed S. Darwish 2020-05-25 13:44 ` Peter Zijlstra 2020-05-25 14:07 ` Peter Zijlstra 2020-05-19 21:45 ` [PATCH v1 11/25] seqlock: Add missing kernel-doc annotations Ahmed S. Darwish 2020-05-19 21:45 ` [PATCH v1 12/25] seqlock: Extend seqcount API with associated locks Ahmed S. Darwish 2020-05-19 21:45 ` [PATCH v1 13/25] dma-buf: Use sequence counter with associated wound/wait mutex Ahmed S. Darwish 2020-05-20 10:48 ` Christian König 2020-05-21 0:09 ` Ahmed S. Darwish 2020-05-21 13:20 ` Christian König 2020-05-19 21:45 ` [PATCH v1 14/25] sched: tasks: Use sequence counter with associated spinlock Ahmed S. Darwish 2020-05-19 21:45 ` [PATCH v1 15/25] netfilter: conntrack: " Ahmed S. Darwish 2020-05-19 21:45 ` [PATCH v1 16/25] netfilter: nft_set_rbtree: Use sequence counter with associated rwlock Ahmed S. Darwish 2020-05-19 21:45 ` [PATCH v1 17/25] xfrm: policy: Use sequence counters with associated lock Ahmed S. Darwish 2020-05-19 21:45 ` [PATCH v1 18/25] timekeeping: Use sequence counter with associated raw spinlock Ahmed S. Darwish 2020-05-19 21:45 ` [PATCH v1 19/25] vfs: Use sequence counter with associated spinlock Ahmed S. Darwish 2020-05-19 21:45 ` [PATCH v1 20/25] raid5: " Ahmed S. Darwish 2020-05-19 21:45 ` [PATCH v1 21/25] iocost: " Ahmed S. Darwish 2020-05-19 21:45 ` [PATCH v1 22/25] NFSv4: " Ahmed S. Darwish 2020-05-19 21:45 ` [PATCH v1 23/25] userfaultfd: " Ahmed S. Darwish 2020-05-19 21:45 ` [PATCH v1 24/25] kvm/eventfd: " Ahmed S. Darwish 2020-05-19 21:45 ` [PATCH v1 25/25] hrtimer: Use sequence counter with associated raw spinlock Ahmed S. Darwish 2020-06-08 0:57 ` [PATCH v2 00/18] seqlock: Extend seqcount API with associated locks Ahmed S. Darwish 2020-06-08 0:57 ` [PATCH v2 01/18] Documentation: locking: Describe seqlock design and usage Ahmed S. Darwish 2020-06-08 0:57 ` [PATCH v2 02/18] seqlock: Properly format kernel-doc code samples Ahmed S. Darwish 2020-06-08 0:57 ` [PATCH v2 03/18] seqlock: Add missing kernel-doc annotations Ahmed S. Darwish 2020-06-08 0:57 ` [PATCH v2 04/18] seqlock: Extend seqcount API with associated locks Ahmed S. Darwish 2020-06-08 0:57 ` [PATCH v2 05/18] dma-buf: Remove custom seqcount lockdep class key Ahmed S. Darwish 2020-06-08 0:57 ` [PATCH v2 06/18] dma-buf: Use sequence counter with associated wound/wait mutex Ahmed S. Darwish 2020-06-08 14:32 ` Daniel Vetter 2020-06-08 0:57 ` [PATCH v2 07/18] sched: tasks: Use sequence counter with associated spinlock Ahmed S. Darwish 2020-06-08 0:57 ` [PATCH v2 08/18] netfilter: conntrack: " Ahmed S. Darwish 2020-06-08 0:57 ` [PATCH v2 09/18] netfilter: nft_set_rbtree: Use sequence counter with associated rwlock Ahmed S. Darwish 2020-06-08 0:57 ` [PATCH v2 10/18] xfrm: policy: Use sequence counters with associated lock Ahmed S. Darwish 2020-06-08 0:57 ` [PATCH v2 11/18] timekeeping: Use sequence counter with associated raw spinlock Ahmed S. Darwish 2020-06-08 0:57 ` [PATCH v2 12/18] vfs: Use sequence counter with associated spinlock Ahmed S. Darwish 2020-06-08 0:57 ` [PATCH v2 13/18] raid5: " Ahmed S. Darwish 2020-06-08 0:57 ` [PATCH v2 14/18] iocost: " Ahmed S. Darwish 2020-06-08 0:57 ` [PATCH v2 15/18] NFSv4: " Ahmed S. Darwish 2020-06-08 0:57 ` [PATCH v2 16/18] userfaultfd: " Ahmed S. Darwish 2020-06-08 0:57 ` [PATCH v2 17/18] kvm/eventfd: " Ahmed S. Darwish 2020-06-08 12:57 ` Paolo Bonzini 2020-06-08 0:57 ` [PATCH v2 18/18] hrtimer: Use sequence counter with associated raw spinlock Ahmed S. Darwish 2020-06-30 5:44 ` [PATCH v3 00/20] seqlock: Extend seqcount API with associated locks Ahmed S. Darwish 2020-06-30 5:44 ` [PATCH v3 01/20] Documentation: locking: Describe seqlock design and usage Ahmed S. Darwish 2020-07-06 21:04 ` Peter Zijlstra 2020-07-06 21:12 ` Jonathan Corbet 2020-07-06 21:16 ` Peter Zijlstra 2020-07-07 10:12 ` Ahmed S. Darwish 2020-07-07 12:47 ` Peter Zijlstra 2020-06-30 5:44 ` [PATCH v3 02/20] seqlock: Properly format kernel-doc code samples Ahmed S. Darwish 2020-06-30 5:44 ` [PATCH v3 03/20] seqlock: Add missing kernel-doc annotations Ahmed S. Darwish 2020-06-30 5:44 ` [PATCH v3 04/20] lockdep: Add preemption enabled/disabled assertion APIs Ahmed S. Darwish 2020-07-06 20:50 ` Peter Zijlstra 2020-07-07 7:34 ` Sebastian A. Siewior 2020-06-30 5:44 ` [PATCH v3 05/20] seqlock: lockdep assert non-preemptibility on seqcount_t write Ahmed S. Darwish 2020-06-30 5:44 ` [PATCH v3 06/20] seqlock: Extend seqcount API with associated locks Ahmed S. Darwish 2020-07-06 21:21 ` Peter Zijlstra 2020-07-07 8:40 ` Ahmed S. Darwish 2020-07-07 13:04 ` Peter Zijlstra 2020-07-07 14:37 ` Peter Zijlstra 2020-07-08 9:12 ` Peter Zijlstra 2020-07-08 10:43 ` Ahmed S. Darwish 2020-07-08 10:33 ` Ahmed S. Darwish 2020-07-08 12:29 ` Peter Zijlstra 2020-07-08 14:13 ` Peter Zijlstra 2020-07-08 14:25 ` Peter Zijlstra 2020-07-08 15:09 ` Ahmed S. Darwish 2020-07-08 15:35 ` Peter Zijlstra 2020-07-08 15:58 ` Ahmed S. Darwish 2020-07-08 16:16 ` Peter Zijlstra 2020-07-08 16:18 ` Peter Zijlstra 2020-07-08 16:01 ` Peter Zijlstra 2020-06-30 5:44 ` [PATCH v3 07/20] dma-buf: Remove custom seqcount lockdep class key Ahmed S. Darwish 2020-06-30 5:44 ` [PATCH v3 08/20] dma-buf: Use sequence counter with associated wound/wait mutex Ahmed S. Darwish 2020-06-30 5:44 ` [PATCH v3 09/20] sched: tasks: Use sequence counter with associated spinlock Ahmed S. Darwish 2020-06-30 5:44 ` [PATCH v3 10/20] netfilter: conntrack: " Ahmed S. Darwish 2020-06-30 5:44 ` [PATCH v3 11/20] netfilter: nft_set_rbtree: Use sequence counter with associated rwlock Ahmed S. Darwish 2020-06-30 5:44 ` [PATCH v3 12/20] xfrm: policy: Use sequence counters with associated lock Ahmed S. Darwish 2020-06-30 5:44 ` [PATCH v3 13/20] timekeeping: Use sequence counter with associated raw spinlock Ahmed S. Darwish 2020-06-30 5:44 ` [PATCH v3 14/20] vfs: Use sequence counter with associated spinlock Ahmed S. Darwish 2020-06-30 5:44 ` [PATCH v3 15/20] raid5: " Ahmed S. Darwish 2020-06-30 5:44 ` [PATCH v3 16/20] iocost: " Ahmed S. Darwish 2020-06-30 7:11 ` Daniel Wagner 2020-06-30 5:44 ` [PATCH v3 17/20] NFSv4: " Ahmed S. Darwish 2020-06-30 5:44 ` [PATCH v3 18/20] userfaultfd: " Ahmed S. Darwish 2020-06-30 5:44 ` [PATCH v3 19/20] kvm/eventfd: " Ahmed S. Darwish 2020-06-30 5:44 ` [PATCH v3 20/20] hrtimer: Use sequence counter with associated raw spinlock Ahmed S. Darwish 2020-07-20 15:55 ` [PATCH v4 00/24] seqlock: Extend seqcount API with associated locks Ahmed S. Darwish 2020-07-20 15:55 ` [PATCH v4 01/24] Documentation: locking: Describe seqlock design and usage Ahmed S. Darwish 2020-07-21 1:35 ` Steven Rostedt 2020-07-21 1:37 ` Steven Rostedt 2020-07-21 5:34 ` Ahmed S. Darwish 2020-07-21 1:44 ` Steven Rostedt 2020-07-21 1:51 ` Steven Rostedt 2020-07-21 7:15 ` Ahmed S. Darwish 2020-07-29 14:33 ` [tip: locking/core] " tip-bot2 for Ahmed S. Darwish 2020-07-20 15:55 ` [PATCH v4 02/24] seqlock: Properly format kernel-doc code samples Ahmed S. Darwish 2020-07-29 14:33 ` [tip: locking/core] " tip-bot2 for Ahmed S. Darwish 2020-07-20 15:55 ` [PATCH v4 03/24] seqlock: seqcount_t latch: End read sections with read_seqcount_retry() Ahmed S. Darwish 2020-07-29 14:33 ` [tip: locking/core] " tip-bot2 for Ahmed S. Darwish 2020-07-20 15:55 ` Ahmed S. Darwish [this message] 2020-07-29 14:33 ` [tip: locking/core] seqlock: Reorder seqcount_t and seqlock_t API definitions tip-bot2 for Ahmed S. Darwish 2020-07-20 15:55 ` [PATCH v4 05/24] seqlock: Add kernel-doc for seqcount_t and seqlock_t APIs Ahmed S. Darwish 2020-07-29 14:33 ` [tip: locking/core] " tip-bot2 for Ahmed S. Darwish 2020-07-20 15:55 ` [PATCH v4 06/24] seqlock: Implement raw_seqcount_begin() in terms of raw_read_seqcount() Ahmed S. Darwish 2020-07-29 14:33 ` [tip: locking/core] " tip-bot2 for Ahmed S. Darwish 2020-07-20 15:55 ` [PATCH v4 07/24] lockdep: Add preemption enabled/disabled assertion APIs Ahmed S. Darwish 2020-07-29 14:33 ` [tip: locking/core] " tip-bot2 for Ahmed S. Darwish 2020-07-20 15:55 ` [PATCH v4 08/24] seqlock: lockdep assert non-preemptibility on seqcount_t write Ahmed S. Darwish 2020-07-29 14:33 ` [tip: locking/core] " tip-bot2 for Ahmed S. Darwish 2020-08-08 23:21 ` [PATCH v4 08/24] " Guenter Roeck 2020-08-08 23:23 ` Guenter Roeck 2020-08-09 18:42 ` Ahmed S. Darwish 2020-08-10 8:59 ` Greg KH 2020-08-10 9:48 ` peterz 2020-08-10 10:03 ` Greg KH 2020-08-10 9:54 ` [PATCH] Revert "seqlock: lockdep assert non-preemptibility on seqcount_t write" Ahmed S. Darwish 2020-08-10 10:05 ` Greg KH 2020-08-10 10:35 ` Ahmed S. Darwish 2020-08-10 14:10 ` Guenter Roeck 2020-08-18 22:51 ` Valdis Klētnieks 2020-08-19 0:56 ` Guenter Roeck 2020-08-19 7:00 ` Sebastian Andrzej Siewior 2020-08-19 7:34 ` Valdis Klētnieks 2020-08-19 16:15 ` Guenter Roeck 2020-08-10 19:55 ` [PATCH v4 08/24] seqlock: lockdep assert non-preemptibility on seqcount_t write Thomas Gleixner 2020-08-11 10:06 ` Greg KH 2020-07-20 15:55 ` [PATCH v4 09/24] seqlock: Extend seqcount API with associated locks Ahmed S. Darwish 2020-07-29 14:33 ` [tip: locking/core] " tip-bot2 for Ahmed S. Darwish 2020-07-20 15:55 ` [PATCH v4 10/24] seqlock: Align multi-line macros newline escapes at 72 columns Ahmed S. Darwish 2020-07-29 14:33 ` [tip: locking/core] " tip-bot2 for Ahmed S. Darwish 2020-07-20 15:55 ` [PATCH v4 11/24] dma-buf: Remove custom seqcount lockdep class key Ahmed S. Darwish 2020-07-29 14:33 ` [tip: locking/core] " tip-bot2 for Ahmed S. Darwish 2020-07-20 15:55 ` [PATCH v4 12/24] dma-buf: Use sequence counter with associated wound/wait mutex Ahmed S. Darwish 2020-07-29 14:33 ` [tip: locking/core] " tip-bot2 for Ahmed S. Darwish 2020-07-20 15:55 ` [PATCH v4 13/24] sched: tasks: Use sequence counter with associated spinlock Ahmed S. Darwish 2020-07-29 14:33 ` [tip: locking/core] " tip-bot2 for Ahmed S. Darwish 2020-07-20 15:55 ` [PATCH v4 14/24] netfilter: conntrack: " Ahmed S. Darwish 2020-07-29 14:33 ` [tip: locking/core] " tip-bot2 for Ahmed S. Darwish 2020-07-20 15:55 ` [PATCH v4 15/24] netfilter: nft_set_rbtree: Use sequence counter with associated rwlock Ahmed S. Darwish 2020-07-29 14:33 ` [tip: locking/core] " tip-bot2 for Ahmed S. Darwish 2020-07-20 15:55 ` [PATCH v4 16/24] xfrm: policy: Use sequence counters with associated lock Ahmed S. Darwish 2020-07-29 14:33 ` [tip: locking/core] " tip-bot2 for Ahmed S. Darwish 2020-07-20 15:55 ` [PATCH v4 17/24] timekeeping: Use sequence counter with associated raw spinlock Ahmed S. Darwish 2020-07-29 14:33 ` [tip: locking/core] " tip-bot2 for Ahmed S. Darwish 2020-07-20 15:55 ` [PATCH v4 18/24] vfs: Use sequence counter with associated spinlock Ahmed S. Darwish 2020-07-29 14:33 ` [tip: locking/core] " tip-bot2 for Ahmed S. Darwish 2020-07-20 15:55 ` [PATCH v4 19/24] raid5: " Ahmed S. Darwish 2020-07-22 6:40 ` Song Liu 2020-07-29 14:33 ` [tip: locking/core] " tip-bot2 for Ahmed S. Darwish 2020-07-20 15:55 ` [PATCH v4 20/24] iocost: " Ahmed S. Darwish 2020-07-29 14:33 ` [tip: locking/core] " tip-bot2 for Ahmed S. Darwish 2020-07-20 15:55 ` [PATCH v4 21/24] NFSv4: " Ahmed S. Darwish 2020-07-29 14:33 ` [tip: locking/core] " tip-bot2 for Ahmed S. Darwish 2020-07-20 15:55 ` [PATCH v4 22/24] userfaultfd: " Ahmed S. Darwish 2020-07-29 14:33 ` [tip: locking/core] " tip-bot2 for Ahmed S. Darwish 2020-07-20 15:55 ` [PATCH v4 23/24] kvm/eventfd: " Ahmed S. Darwish 2020-07-29 14:33 ` [tip: locking/core] " tip-bot2 for Ahmed S. Darwish 2020-07-20 15:55 ` [PATCH v4 24/24] hrtimer: Use sequence counter with associated raw spinlock Ahmed S. Darwish 2020-07-29 14:33 ` [tip: locking/core] " tip-bot2 for Ahmed S. Darwish 2020-07-20 16:49 ` [PATCH v4 00/24] seqlock: Extend seqcount API with associated locks Eric Biggers 2020-07-20 17:33 ` Ahmed S. Darwish 2020-08-27 11:40 ` [PATCH v1 0/8] seqlock: Introduce seqcount_latch_t Ahmed S. Darwish 2020-08-27 11:40 ` [PATCH v1 1/8] time/sched_clock: Use raw_read_seqcount_latch() during suspend Ahmed S. Darwish 2020-08-27 11:40 ` [PATCH v1 2/8] mm/swap: Do not abuse the seqcount_t latching API Ahmed S. Darwish 2020-08-27 11:40 ` [PATCH v1 3/8] seqlock: Introduce seqcount_latch_t Ahmed S. Darwish 2020-09-10 15:08 ` [tip: locking/core] " tip-bot2 for Ahmed S. Darwish 2020-08-27 11:40 ` [PATCH v1 4/8] time/sched_clock: Use seqcount_latch_t Ahmed S. Darwish 2020-09-10 15:08 ` [tip: locking/core] " tip-bot2 for Ahmed S. Darwish 2020-08-27 11:40 ` [PATCH v1 5/8] timekeeping: " Ahmed S. Darwish 2020-09-10 15:08 ` [tip: locking/core] " tip-bot2 for Ahmed S. Darwish 2020-08-27 11:40 ` [PATCH v1 6/8] x86/tsc: " Ahmed S. Darwish 2020-09-04 7:41 ` peterz 2020-09-04 8:03 ` peterz 2020-09-07 16:29 ` Ahmed S. Darwish 2020-09-07 17:30 ` peterz 2020-09-08 6:23 ` Ahmed S. Darwish 2020-09-10 15:08 ` [tip: locking/core] " tip-bot2 for Ahmed S. Darwish 2020-08-27 11:40 ` [PATCH v1 7/8] rbtree_latch: " Ahmed S. Darwish 2020-09-10 15:08 ` [tip: locking/core] " tip-bot2 for Ahmed S. Darwish 2020-08-27 11:40 ` [PATCH v1 8/8] seqlock: seqcount latch APIs: Only allow seqcount_latch_t Ahmed S. Darwish 2020-09-10 15:08 ` [tip: locking/core] " tip-bot2 for Ahmed S. Darwish 2020-08-28 1:07 ` [PATCH v1 0/5] seqlock: Introduce PREEMPT_RT support Ahmed S. Darwish 2020-08-28 1:07 ` [PATCH v1 1/5] seqlock: seqcount_LOCKTYPE_t: Standardize naming convention Ahmed S. Darwish 2020-08-28 8:18 ` peterz 2020-08-28 8:24 ` Ahmed S. Darwish 2020-08-28 1:07 ` [PATCH v1 2/5] seqlock: Use unique prefix for seqcount_t property accessors Ahmed S. Darwish 2020-08-28 8:27 ` peterz 2020-08-28 8:59 ` Ahmed S. Darwish 2020-08-28 1:07 ` [PATCH v1 3/5] seqlock: seqcount_t: Implement all read APIs as statement expressions Ahmed S. Darwish 2020-08-28 8:30 ` peterz 2020-08-28 8:37 ` Ahmed S. Darwish 2020-08-28 1:07 ` [PATCH v1 4/5] seqlock: seqcount_LOCKTYPE_t: Introduce PREEMPT_RT support Ahmed S. Darwish 2020-08-28 8:57 ` peterz 2020-08-28 8:59 ` peterz 2020-08-28 9:31 ` Ahmed S. Darwish 2020-08-28 14:36 ` Ahmed S. Darwish 2020-08-28 1:07 ` [PATCH v1 5/5] seqlock: PREEMPT_RT: Do not starve seqlock_t writers Ahmed S. Darwish 2020-09-04 6:52 ` [PATCH v1 0/5] seqlock: Introduce PREEMPT_RT support peterz 2020-09-04 7:30 ` Ahmed S. Darwish 2020-09-10 15:08 ` [tip: locking/core] seqlock: seqcount_LOCKNAME_t: " tip-bot2 for Ahmed S. Darwish
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