From: Zqiang <qiang.zhang@linux.dev>
To: paulmck@kernel.org, frederic@kernel.org,
neeraj.upadhyay@kernel.org, joelagnelf@nvidia.com,
urezki@gmail.com, boqun@kernel.org
Cc: qiang.zhang@linux.dev, rcu@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [PATCH v2] doc: Update recent RCU/SRCU API additions to whatisRCU.rst
Date: Mon, 19 Oct 2026 20:22:09 +0800 [thread overview]
Message-ID: <20261019122209.15604-2-qiang.zhang@linux.dev> (raw)
In-Reply-To: <20261019122209.15604-1-qiang.zhang@linux.dev>
The following commit introduces some new RCU/SRCU APIs:
Commit 'd3f52f53a562 ("srcu: Create an SRCU-fast-updown API")'
Commit 'dab06d6f9379 ("srcutree: Add an atomic Tree SRCU")'
Commit 'cacadb630375 ("srcu: Add guards for notrace variants of SRCU-fast readers")'
Commit 'fa8a2d55139f ("srcu: Add lock guard for srcu_fast_updown flavor")'
Commit '954c0d741299 ("srcu: Add guards for SRCU-fast readers")'
This commit therefore update thems and some missing RCU related APIs
to whatisRCU.rst.
Signed-off-by: Zqiang <qiang.zhang@linux.dev>
---
Documentation/RCU/whatisRCU.rst | 24 +++++++++++++++++++++---
1 file changed, 21 insertions(+), 3 deletions(-)
diff --git a/Documentation/RCU/whatisRCU.rst b/Documentation/RCU/whatisRCU.rst
index e6767baff2d3..fe9dc3948690 100644
--- a/Documentation/RCU/whatisRCU.rst
+++ b/Documentation/RCU/whatisRCU.rst
@@ -1084,8 +1084,9 @@ RCU::
rcu_dereference call_rcu
rcu_dereference_check call_rcu_hurry
rcu_dereference_protected kfree_rcu
- rcu_read_lock_held kvfree_rcu
- rcu_read_lock_any_held kfree_rcu_mightsleep
+ rcu_dereference_all kvfree_rcu
+ rcu_read_lock_held kfree_rcu_mightsleep
+ rcu_read_lock_any_held kvfree_rcu_mightsleep
rcu_pointer_handoff cond_synchronize_rcu
unrcu_pointer cond_synchronize_rcu_full
cond_synchronize_rcu_expedited
@@ -1209,13 +1210,23 @@ SRCU::
srcu_read_lock_nmisafe start_poll_synchronize_srcu
srcu_read_unlock_nmisafe start_poll_synchronize_srcu_expedited
srcu_read_lock_notrace poll_state_synchronize_srcu
- srcu_read_unlock_notrace
+ srcu_read_unlock_notrace synchronize_srcu_atomic
srcu_down_read
srcu_up_read
srcu_down_read_fast
srcu_up_read_fast
+ srcu_read_lock_fast_updown
+ srcu_read_unlock_fast_updown
+ srcu_read_lock_atomic
+ srcu_read_unlock_atomic
guard(srcu)()
+ guard(srcu_fast)()
+ guard(srcu_fast_notrace)()
+ guard(srcu_fast_updown)()
scoped_guard(srcu)
+ scoped_guard(srcu_fast)
+ scoped_guard(srcu_fast_notrace)
+ scoped_guard(srcu_fast_updown)
srcu_read_lock_held
srcu_dereference
srcu_dereference_check
@@ -1229,9 +1240,16 @@ SRCU: Initialization/cleanup/ordering::
DEFINE_STATIC_SRCU
DEFINE_SRCU_FAST // for srcu_read_lock_fast() and friends
DEFINE_STATIC_SRCU_FAST // for srcu_read_lock_fast() and friends
+ DEFINE_SRCU_FAST_UPDOWN // for srcu_read_lock_fast_updown() and friends
+ DEFINE_STATIC_SRCU_FAST_UPDOWN // for srcu_read_lock_fast_updown() and friends
+ DEFINE_SRCU_ATOMIC // for srcu_read_lock_atomic() and friends
+ DEFINE_STATIC_SRCU_ATOMIC // for srcu_read_lock_atomic() and friends
init_srcu_struct
init_srcu_struct_fast
+ init_srcu_struct_fast_updown
+ init_srcu_struct_atomic
cleanup_srcu_struct
+ smp_mb__after_srcu_read_lock
smp_mb__after_srcu_read_unlock
All: lockdep-checked RCU utility APIs::
--
2.17.1
next prev parent reply other threads:[~2026-10-19 12:22 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-10-19 12:22 [PATCH v2] rcu-tasks: Avoid alloc_percpu() failure in rcu_tasks_rude_wait_gp() Zqiang
2026-10-19 12:22 ` Zqiang [this message]
2026-10-19 15:12 ` [PATCH v2] doc: Update recent RCU/SRCU API additions to whatisRCU.rst Bradley Morgan
2026-10-19 16:44 ` Paul E. McKenney
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