From: Boqun Feng <boqun.feng@gmail.com>
To: rcu@vger.kernel.org
Cc: Lai Jiangshan <jiangshanlai@gmail.com>,
"Paul E. McKenney" <paulmck@kernel.org>,
Josh Triplett <josh@joshtriplett.org>,
Steven Rostedt <rostedt@goodmis.org>,
Mathieu Desnoyers <mathieu.desnoyers@efficios.com>,
Frederic Weisbecker <frederic@kernel.org>,
Neeraj Upadhyay <neeraj.upadhyay@kernel.org>,
Joel Fernandes <joel@joelfernandes.org>,
Boqun Feng <boqun.feng@gmail.com>,
Uladzislau Rezki <urezki@gmail.com>,
Zqiang <qiang.zhang1211@gmail.com>,
Davidlohr Bueso <dave@stgolabs.net>,
Shuah Khan <shuah@kernel.org>,
linux-kernel@vger.kernel.org, linux-kselftest@vger.kernel.org,
bpf@vger.kernel.org, Alexei Starovoitov <ast@kernel.org>,
Andrii Nakryiko <andrii@kernel.org>,
Peter Zijlstra <peterz@infradead.org>,
Kent Overstreet <kent.overstreet@linux.dev>
Subject: [PATCH rcu 12/20] srcu: Move SRCU Tree/Tiny definitions from srcu.h
Date: Sun, 23 Feb 2025 18:22:06 -0800 [thread overview]
Message-ID: <20250224022214.12037-13-boqun.feng@gmail.com> (raw)
In-Reply-To: <20250224022214.12037-1-boqun.feng@gmail.com>
From: "Paul E. McKenney" <paulmck@kernel.org>
There are a couple of definitions under "#ifdef CONFIG_TINY_SRCU"
in include/linux/srcu.h. There is no point in them being there,
so this commit moves them to include/linux/srcutiny.h and
include/linux/srcutree.c, thus eliminating that #ifdef.
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
Cc: Alexei Starovoitov <ast@kernel.org>
Cc: Andrii Nakryiko <andrii@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Kent Overstreet <kent.overstreet@linux.dev>
Cc: <bpf@vger.kernel.org>
Signed-off-by: Boqun Feng <boqun.feng@gmail.com>
---
include/linux/srcu.h | 10 +---------
include/linux/srcutiny.h | 3 +++
include/linux/srcutree.h | 1 +
3 files changed, 5 insertions(+), 9 deletions(-)
diff --git a/include/linux/srcu.h b/include/linux/srcu.h
index 505f5bdce444..2bd0e24e9b55 100644
--- a/include/linux/srcu.h
+++ b/include/linux/srcu.h
@@ -52,6 +52,7 @@ int init_srcu_struct(struct srcu_struct *ssp);
#define SRCU_READ_FLAVOR_SLOWGP SRCU_READ_FLAVOR_LITE
// Flavors requiring synchronize_rcu()
// instead of smp_mb().
+void __srcu_read_unlock(struct srcu_struct *ssp, int idx) __releases(ssp);
#ifdef CONFIG_TINY_SRCU
#include <linux/srcutiny.h>
@@ -64,15 +65,6 @@ int init_srcu_struct(struct srcu_struct *ssp);
void call_srcu(struct srcu_struct *ssp, struct rcu_head *head,
void (*func)(struct rcu_head *head));
void cleanup_srcu_struct(struct srcu_struct *ssp);
-int __srcu_read_lock(struct srcu_struct *ssp) __acquires(ssp);
-void __srcu_read_unlock(struct srcu_struct *ssp, int idx) __releases(ssp);
-#ifdef CONFIG_TINY_SRCU
-#define __srcu_read_lock_lite __srcu_read_lock
-#define __srcu_read_unlock_lite __srcu_read_unlock
-#else // #ifdef CONFIG_TINY_SRCU
-int __srcu_read_lock_lite(struct srcu_struct *ssp) __acquires(ssp);
-void __srcu_read_unlock_lite(struct srcu_struct *ssp, int idx) __releases(ssp);
-#endif // #else // #ifdef CONFIG_TINY_SRCU
void synchronize_srcu(struct srcu_struct *ssp);
#define SRCU_GET_STATE_COMPLETED 0x1
diff --git a/include/linux/srcutiny.h b/include/linux/srcutiny.h
index b347bde1aac2..a6194f7a7e34 100644
--- a/include/linux/srcutiny.h
+++ b/include/linux/srcutiny.h
@@ -71,6 +71,9 @@ static inline int __srcu_read_lock(struct srcu_struct *ssp)
return idx;
}
+#define __srcu_read_lock_lite __srcu_read_lock
+#define __srcu_read_unlock_lite __srcu_read_unlock
+
static inline void synchronize_srcu_expedited(struct srcu_struct *ssp)
{
synchronize_srcu(ssp);
diff --git a/include/linux/srcutree.h b/include/linux/srcutree.h
index 55fa400624bb..ef3065c0cadc 100644
--- a/include/linux/srcutree.h
+++ b/include/linux/srcutree.h
@@ -207,6 +207,7 @@ struct srcu_struct {
#define DEFINE_SRCU(name) __DEFINE_SRCU(name, /* not static */)
#define DEFINE_STATIC_SRCU(name) __DEFINE_SRCU(name, static)
+int __srcu_read_lock(struct srcu_struct *ssp) __acquires(ssp);
void synchronize_srcu_expedited(struct srcu_struct *ssp);
void srcu_barrier(struct srcu_struct *ssp);
void srcu_torture_stats_print(struct srcu_struct *ssp, char *tt, char *tf);
--
2.39.5 (Apple Git-154)
next prev parent reply other threads:[~2025-02-24 2:22 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-02-24 2:21 [PATCH rcu 00/20] SRCU changes for v6.15 Boqun Feng
2025-02-24 2:21 ` [PATCH rcu 01/20] srcu: Make Tiny SRCU able to operate in preemptible kernels Boqun Feng
2025-02-24 2:21 ` [PATCH rcu 02/20] srcu: Define SRCU_READ_FLAVOR_ALL in terms of symbols Boqun Feng
2025-02-24 2:21 ` [PATCH rcu 03/20] srcu: Use ->srcu_gp_seq for rcutorture reader batch Boqun Feng
2025-02-24 2:21 ` [PATCH rcu 04/20] srcu: Pull ->srcu_{un,}lock_count into a new srcu_ctr structure Boqun Feng
2025-02-24 2:21 ` [PATCH rcu 05/20] srcu: Make SRCU readers use ->srcu_ctrs for counter selection Boqun Feng
2025-02-24 2:22 ` [PATCH rcu 06/20] srcu: Make Tree SRCU updates independent of ->srcu_idx Boqun Feng
2025-02-24 2:22 ` [PATCH rcu 07/20] srcu: Force synchronization for srcu_get_delay() Boqun Feng
2025-02-24 2:22 ` [PATCH rcu 08/20] srcu: Rename srcu_check_read_flavor_lite() to srcu_check_read_flavor_force() Boqun Feng
2025-02-24 2:22 ` [PATCH rcu 09/20] srcu: Add SRCU_READ_FLAVOR_SLOWGP to flag need for synchronize_rcu() Boqun Feng
2025-02-24 2:22 ` [PATCH rcu 10/20] srcu: Pull pointer-to-integer conversion into __srcu_ptr_to_ctr() Boqun Feng
2025-02-24 2:22 ` [PATCH rcu 11/20] srcu: Pull integer-to-pointer conversion into __srcu_ctr_to_ptr() Boqun Feng
2025-02-24 2:22 ` Boqun Feng [this message]
2025-02-24 2:22 ` [PATCH rcu 13/20] srcu: Add SRCU-fast readers Boqun Feng
2025-02-24 2:22 ` [PATCH rcu 14/20] rcutorture: Add ability to test srcu_read_{,un}lock_fast() Boqun Feng
2025-02-24 2:22 ` [PATCH rcu 15/20] refscale: Add srcu_read_lock_fast() support using "srcu-fast" Boqun Feng
2025-02-24 2:22 ` [PATCH rcu 16/20] rcutorture: Make scenario SRCU-P use srcu_read_lock_fast() Boqun Feng
2025-02-24 2:22 ` [PATCH rcu 17/20] srcu: Fix srcu_read_unlock_{lite,nmisafe}() kernel-doc Boqun Feng
2025-02-24 2:22 ` [PATCH rcu 18/20] srcu: Document that srcu_{read_lock,down_read}() can share srcu_struct Boqun Feng
2025-02-24 2:22 ` [PATCH rcu 19/20] srcu: Add srcu_down_read_fast() and srcu_up_read_fast() Boqun Feng
2025-02-24 2:22 ` [PATCH rcu 20/20] srcu: Make SRCU-fast also be NMI-safe Boqun Feng
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