Linux RCU subsystem development
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From: "Paul E. McKenney" <paulmck@kernel.org>
To: rcu@vger.kernel.org
Cc: linux-kernel@vger.kernel.org, kernel-team@meta.com,
	rostedt@goodmis.org, "Paul E. McKenney" <paulmck@kernel.org>
Subject: [PATCH rcu 17/17] srcu: Fix srcu_read_unlock_{lite,nmisafe}() kernel-doc
Date: Thu, 16 Jan 2025 12:21:12 -0800	[thread overview]
Message-ID: <20250116202112.3783327-17-paulmck@kernel.org> (raw)
In-Reply-To: <826c8527-d6ba-46c5-bb89-4625750cbeed@paulmck-laptop>

The srcu_read_unlock_lite() and srcu_read_unlock_nmisafe() both say that
their idx parameters must come from srcu_read_lock().  This would be bad,
because a given srcu_struct structure may be used only with one flavor of
SRCU reader.  This commit therefore updates the srcu_read_unlock_lite()
kernel-doc header to say that its idx parameter must be obtained
from srcu_read_lock_lite() and the srcu_read_unlock_nmisafe()
kernel-doc header to say that its idx parameter must be obtained from
srcu_read_lock_nmisafe().

Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
---
 include/linux/srcu.h | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/include/linux/srcu.h b/include/linux/srcu.h
index 63bddc3014238..a0df80baaccf3 100644
--- a/include/linux/srcu.h
+++ b/include/linux/srcu.h
@@ -402,7 +402,7 @@ static inline void srcu_read_unlock_fast(struct srcu_struct *ssp, struct srcu_ct
 /**
  * srcu_read_unlock_lite - unregister a old reader from an SRCU-protected structure.
  * @ssp: srcu_struct in which to unregister the old reader.
- * @idx: return value from corresponding srcu_read_lock().
+ * @idx: return value from corresponding srcu_read_lock_lite().
  *
  * Exit a light-weight SRCU read-side critical section.
  */
@@ -418,7 +418,7 @@ static inline void srcu_read_unlock_lite(struct srcu_struct *ssp, int idx)
 /**
  * srcu_read_unlock_nmisafe - unregister a old reader from an SRCU-protected structure.
  * @ssp: srcu_struct in which to unregister the old reader.
- * @idx: return value from corresponding srcu_read_lock().
+ * @idx: return value from corresponding srcu_read_lock_nmisafe().
  *
  * Exit an SRCU read-side critical section, but in an NMI-safe manner.
  */
-- 
2.40.1


  parent reply	other threads:[~2025-01-16 20:21 UTC|newest]

Thread overview: 47+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-01-16 20:21 [PATCH rcu 0/17] SRCU updates, including SRCU-fast Paul E. McKenney
2025-01-16 20:20 ` [PATCH rcu 01/17] srcu: Make Tiny SRCU able to operate in preemptible kernels Paul E. McKenney
2025-01-16 20:20 ` [PATCH rcu 02/17] srcu: Define SRCU_READ_FLAVOR_ALL in terms of symbols Paul E. McKenney
2025-01-16 20:20 ` [PATCH rcu 03/17] srcu: Use ->srcu_gp_seq for rcutorture reader batch Paul E. McKenney
2025-01-16 20:20 ` [PATCH rcu 04/17] srcu: Pull ->srcu_{un,}lock_count into a new srcu_ctr structure Paul E. McKenney
2025-01-16 20:21 ` [PATCH rcu 05/17] srcu: Make SRCU readers use ->srcu_ctrs for counter selection Paul E. McKenney
2025-01-16 20:21 ` [PATCH rcu 06/17] srcu: Make Tree SRCU updates independent of ->srcu_idx Paul E. McKenney
2025-01-16 20:21 ` [PATCH rcu 07/17] srcu: Force synchronization for srcu_get_delay() Paul E. McKenney
2025-01-16 20:21 ` [PATCH rcu 08/17] srcu: Rename srcu_check_read_flavor_lite() to srcu_check_read_flavor_force() Paul E. McKenney
2025-01-16 20:21 ` [PATCH rcu 09/17] srcu: Add SRCU_READ_FLAVOR_SLOWGP to flag need for synchronize_rcu() Paul E. McKenney
2025-01-16 20:21 ` [PATCH rcu 10/17] srcu: Pull pointer-to-integer conversion into __srcu_ptr_to_ctr() Paul E. McKenney
2025-01-16 20:21 ` [PATCH rcu 11/17] srcu: Pull integer-to-pointer conversion into __srcu_ctr_to_ptr() Paul E. McKenney
2025-01-16 20:21 ` [PATCH rcu 12/17] srcu: Move SRCU Tree/Tiny definitions from srcu.h Paul E. McKenney
2025-01-16 20:21 ` [PATCH rcu 13/17] srcu: Add SRCU-fast readers Paul E. McKenney
2025-01-16 21:00   ` Alexei Starovoitov
2025-01-16 21:38     ` Peter Zijlstra
2025-01-16 21:55     ` Paul E. McKenney
2025-01-16 22:58       ` Alexei Starovoitov
2025-01-16 21:52   ` Andrii Nakryiko
2025-01-16 22:54     ` Paul E. McKenney
2025-01-16 22:57       ` Andrii Nakryiko
2025-01-17  0:07         ` Paul E. McKenney
2025-01-16 20:21 ` [PATCH rcu 14/17] rcutorture: Add ability to test srcu_read_{,un}lock_fast() Paul E. McKenney
2025-01-16 20:21 ` [PATCH rcu 15/17] refscale: Add srcu_read_lock_fast() support using "srcu-fast" Paul E. McKenney
2025-01-16 20:21 ` [PATCH rcu 16/17] rcutorture: Make scenario SRCU-P use srcu_read_lock_fast() Paul E. McKenney
2025-01-16 20:21 ` Paul E. McKenney [this message]
2025-01-30 19:03 ` [PATCH rcu 0/17] SRCU updates, including SRCU-fast Paul E. McKenney
2025-01-30 19:02   ` [PATCH rcu v2] 01/20] srcu: Make Tiny SRCU able to operate in preemptible kernels Paul E. McKenney
2025-01-30 19:02   ` [PATCH rcu v2] 02/20] srcu: Define SRCU_READ_FLAVOR_ALL in terms of symbols Paul E. McKenney
2025-01-30 19:03   ` [PATCH rcu v2] 03/20] srcu: Use ->srcu_gp_seq for rcutorture reader batch Paul E. McKenney
2025-01-30 19:03   ` [PATCH rcu v2] 04/20] srcu: Pull ->srcu_{un,}lock_count into a new srcu_ctr structure Paul E. McKenney
2025-01-30 19:03   ` [PATCH rcu v2] 05/20] srcu: Make SRCU readers use ->srcu_ctrs for counter selection Paul E. McKenney
2025-01-30 19:03   ` [PATCH rcu v2] 06/20] srcu: Make Tree SRCU updates independent of ->srcu_idx Paul E. McKenney
2025-01-30 19:03   ` [PATCH rcu v2] 07/20] srcu: Force synchronization for srcu_get_delay() Paul E. McKenney
2025-01-30 19:03   ` [PATCH rcu v2] 08/20] srcu: Rename srcu_check_read_flavor_lite() to srcu_check_read_flavor_force() Paul E. McKenney
2025-01-30 19:03   ` [PATCH rcu v2] 09/20] srcu: Add SRCU_READ_FLAVOR_SLOWGP to flag need for synchronize_rcu() Paul E. McKenney
2025-01-30 19:03   ` [PATCH rcu v2] 10/20] srcu: Pull pointer-to-integer conversion into __srcu_ptr_to_ctr() Paul E. McKenney
2025-01-30 19:03   ` [PATCH rcu v2] 11/20] srcu: Pull integer-to-pointer conversion into __srcu_ctr_to_ptr() Paul E. McKenney
2025-01-30 19:03   ` [PATCH rcu v2] 12/20] srcu: Move SRCU Tree/Tiny definitions from srcu.h Paul E. McKenney
2025-01-30 19:03   ` [PATCH rcu v2] 13/20] srcu: Add SRCU-fast readers Paul E. McKenney
2025-01-30 19:03   ` [PATCH rcu v2] 14/20] rcutorture: Add ability to test srcu_read_{,un}lock_fast() Paul E. McKenney
2025-01-30 19:03   ` [PATCH rcu v2] 15/20] refscale: Add srcu_read_lock_fast() support using "srcu-fast" Paul E. McKenney
2025-01-30 19:03   ` [PATCH rcu v2] 16/20] rcutorture: Make scenario SRCU-P use srcu_read_lock_fast() Paul E. McKenney
2025-01-30 19:03   ` [PATCH rcu v2] 17/20] srcu: Fix srcu_read_unlock_{lite,nmisafe}() kernel-doc Paul E. McKenney
2025-01-30 19:03   ` [PATCH rcu v2] 18/20] srcu: Document that srcu_{read_lock,down_read}() can share srcu_struct Paul E. McKenney
2025-01-30 19:03   ` [PATCH rcu v2] 19/20] srcu: Add srcu_down_read_fast() and srcu_up_read_fast() Paul E. McKenney
2025-01-30 19:03   ` [PATCH rcu v2] 20/20] srcu: Make SRCU-fast also be NMI-safe Paul E. McKenney

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