[PATCH v3 00/20] seqlock: Extend seqcount API with associated locks

Ahmed S. Darwish
2020-06-30T05:44:58Z

Hi,

This is v3 of the seqlock patch series:

[PATCH v1 00/25] seqlock: Extend seqcount API with associated locks
https://lore.kernel.org/lkml/20200519214547.352050-1-a.darwish@linutronix.de

[PATCH v2 00/18]
https://lore.kernel.org/lkml/20200608005729.1874024-1-a.darwish@linutronix.de

It's based over:

git://git.kernel.org/pub/scm/linux/kernel/git/peterz/queue.git locking/core

to get Peter's lockdep irqstate tracking series below, which untangles
mainline seqlock.h<=>sched.h 'current->' task_struct circular dependency:

https://lkml.kernel.org/r/linuxppc-dev/20200623083645.277342609@infradead.org

Changelog-v3:

- Re-add lockdep non-preemptibility checks on seqcount_t write paths.
They were removed from v2 due to the circular dependencies mentioned.

- Slight rebase over the new v5.8-rc1 KCSAN seqlock.h changes

- Collect seqcount_t call-sites acked-by tags

Thanks,

8<--------------

Ahmed S. Darwish (20):
Documentation: locking: Describe seqlock design and usage
seqlock: Properly format kernel-doc code samples
seqlock: Add missing kernel-doc annotations
lockdep: Add preemption enabled/disabled assertion APIs
seqlock: lockdep assert non-preemptibility on seqcount_t write
seqlock: Extend seqcount API with associated locks
dma-buf: Remove custom seqcount lockdep class key
dma-buf: Use sequence counter with associated wound/wait mutex
sched: tasks: Use sequence counter with associated spinlock
netfilter: conntrack: Use sequence counter with associated spinlock
netfilter: nft_set_rbtree: Use sequence counter with associated rwlock
xfrm: policy: Use sequence counters with associated lock
timekeeping: Use sequence counter with associated raw spinlock
vfs: Use sequence counter with associated spinlock
raid5: Use sequence counter with associated spinlock
iocost: Use sequence counter with associated spinlock
NFSv4: Use sequence counter with associated spinlock
userfaultfd: Use sequence counter with associated spinlock
kvm/eventfd: Use sequence counter with associated spinlock
hrtimer: Use sequence counter with associated raw spinlock

Documentation/locking/index.rst | 1 +
Documentation/locking/seqlock.rst | 242 +++++
MAINTAINERS | 2 +-
block/blk-iocost.c | 5 +-
drivers/dma-buf/dma-resv.c | 15 +-
.../gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c | 2 -
drivers/md/raid5.c | 2 +-
drivers/md/raid5.h | 2 +-
fs/dcache.c | 2 +-
fs/fs_struct.c | 4 +-
fs/nfs/nfs4_fs.h | 2 +-
fs/nfs/nfs4state.c | 2 +-
fs/userfaultfd.c | 4 +-
include/linux/dcache.h | 2 +-
include/linux/dma-resv.h | 4 +-
include/linux/fs_struct.h | 2 +-
include/linux/hrtimer.h | 2 +-
include/linux/kvm_irqfd.h | 2 +-
include/linux/lockdep.h | 18 +
include/linux/sched.h | 2 +-
include/linux/seqlock.h | 872 ++++++++++++++----
include/linux/seqlock_types_internal.h | 186 ++++
include/net/netfilter/nf_conntrack.h | 2 +-
init/init_task.c | 3 +-
kernel/fork.c | 2 +-
kernel/time/hrtimer.c | 13 +-
kernel/time/timekeeping.c | 19 +-
lib/Kconfig.debug | 1 +
net/netfilter/nf_conntrack_core.c | 5 +-
net/netfilter/nft_set_rbtree.c | 4 +-
net/xfrm/xfrm_policy.c | 10 +-
virt/kvm/eventfd.c | 2 +-
32 files changed, 1211 insertions(+), 225 deletions(-)
create mode 100644 Documentation/locking/seqlock.rst
create mode 100644 include/linux/seqlock_types_internal.h

base-commit: 997e89fa345e9006f311cf9f9c8fd9f7d96c240f
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2.20.1