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Searched refs:seqlock (Results 1 – 17 of 17) sorted by relevance

/Linux-v6.1/Documentation/RCU/
DarrayRCU.rst46 have not been used with RCU. Rik van Riel recommends using seqlock in
51 Why is it so important that updates be rare when using seqlock?
160 Why is it so important that updates be rare when using seqlock?
163 using seqlock is that frequent updates can livelock readers.
164 One way to avoid this problem is to assign a seqlock for
DRTFP.txt2613 RCU, and seqlock.
/Linux-v6.1/Documentation/locking/
Dindex.rst17 seqlock
Dseqlock.rst239 .. kernel-doc:: include/linux/seqlock.h
/Linux-v6.1/Documentation/translations/zh_CN/locking/
Dindex.rst28 * seqlock
/Linux-v6.1/include/drm/
Ddrm_vblank.h111 seqlock_t seqlock; member
/Linux-v6.1/include/net/
Dsch_generic.h125 spinlock_t seqlock; member
160 return spin_is_locked(&qdisc->seqlock); in qdisc_is_running()
187 if (spin_trylock(&qdisc->seqlock)) in qdisc_run_begin()
202 return spin_trylock(&qdisc->seqlock); in qdisc_run_begin()
210 spin_unlock(&qdisc->seqlock); in qdisc_run_end()
/Linux-v6.1/drivers/gpu/drm/
Ddrm_vblank.c179 write_seqlock(&vblank->seqlock); in store_vblank()
182 write_sequnlock(&vblank->seqlock); in store_vblank()
544 seqlock_init(&vblank->seqlock); in drm_vblank_init()
948 seq = read_seqbegin(&vblank->seqlock); in drm_vblank_count_and_time()
951 } while (read_seqretry(&vblank->seqlock, seq)); in drm_vblank_count_and_time()
/Linux-v6.1/Documentation/filesystems/
Dpath-lookup.txt94 These members are also protected by d_seq seqlock, although this offers
120 dentry. So a seqlock is used to detect when a rename has occurred, and so the
172 rename seqlock is also used to cover this race in much the same way, by
184 dentry seqlock (d_seq) is used to take a "coherent snapshot" of what the dentry
301 * Have a per-dentry seqlock to protect the dentry name, parent, and inode,
313 * If seqlock verification fails anywhere along the path, do a full restart
Dpath-lookup.rst234 ``rename_lock`` is a seqlock that is updated whenever any dentry is
340 ``mount_lock`` is a global seqlock, a bit like ``rename_lock``. It can be used to
345 the value in the seqlock is read, then the code finds the mount that
353 a little more care is needed. In this case the seqlock (which
700 samples the status of a seqlock using ``read_seqcount_begin()`` or a
706 RCU-walk accesses two different fields in a seqlock-protected
733 We already met the ``mount_lock`` seqlock when REF-walk used it to
763 the per-dentry ``d_seq`` seqlock, and stores the sequence number in the
/Linux-v6.1/net/sched/
Dsch_generic.c965 spin_lock_init(&sch->seqlock); in qdisc_alloc()
966 lockdep_set_class(&sch->seqlock, in qdisc_alloc()
1282 spin_lock_bh(&qdisc->seqlock); in dev_reset_queue()
1291 spin_unlock_bh(&qdisc->seqlock); in dev_reset_queue()
/Linux-v6.1/fs/nfs/
Dnfs4proc.c1666 write_seqlock(&state->seqlock); in nfs_clear_open_stateid()
1670 write_sequnlock(&state->seqlock); in nfs_clear_open_stateid()
1678 __must_hold(&state->seqlock) in nfs_set_open_stateid_locked()
1702 write_sequnlock(&state->seqlock); in nfs_set_open_stateid_locked()
1717 write_seqlock(&state->seqlock); in nfs_set_open_stateid_locked()
1742 write_seqlock(&state->seqlock); in nfs_state_set_open_stateid()
1755 write_sequnlock(&state->seqlock); in nfs_state_set_open_stateid()
1774 write_seqlock(&state->seqlock); in nfs_state_set_delegation()
1777 write_sequnlock(&state->seqlock); in nfs_state_set_delegation()
1782 write_seqlock(&state->seqlock); in nfs_state_clear_delegation()
[all …]
Dnfs4_fs.h189 seqlock_t seqlock; /* Protects the stateid/open_stateid */ member
Dnfs4state.c675 seqlock_init(&state->seqlock); in nfs4_alloc_open_state()
1027 seq = read_seqbegin(&state->seqlock); in nfs4_copy_open_stateid()
1033 } while (read_seqretry(&state->seqlock, seq)); in nfs4_copy_open_stateid()
/Linux-v6.1/tools/memory-model/Documentation/
Dsimple.txt151 Additional information may be found in include/linux/seqlock.h.
/Linux-v6.1/tools/perf/
Ddesign.txt322 __u32 lock; /* seqlock for synchronization */
/Linux-v6.1/
DMAINTAINERS11976 F: include/linux/seqlock.h