linux-kernel - [PATCH v6 5/7] atomic: Add atomic_cond_read_*

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Message-Id: <20251016165646.430267-6-ankur.a.arora@oracle.com>
Date: Thu, 16 Oct 2025 09:56:44 -0700
From: Ankur Arora <ankur.a.arora@...cle.com>
To: linux-kernel@...r.kernel.org, linux-arch@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, bpf@...r.kernel.org
Cc: arnd@...db.de, catalin.marinas@....com, will@...nel.org,
        peterz@...radead.org, akpm@...ux-foundation.org, mark.rutland@....com,
        harisokn@...zon.com, cl@...two.org, ast@...nel.org, rafael@...nel.org,
        daniel.lezcano@...aro.org, memxor@...il.com, zhenglifeng1@...wei.com,
        xueshuai@...ux.alibaba.com, joao.m.martins@...cle.com,
        boris.ostrovsky@...cle.com, konrad.wilk@...cle.com
Subject: [PATCH v6 5/7] atomic: Add atomic_cond_read_*_timeout()

Add atomic_cond_read_*_timeout() and, atomic64_cond_read_*_timeout(),
to provide atomic load wrappers around the cond-load timeout interfaces.

Cc: Will Deacon <will@...nel.org>
Cc: Peter Zijlstra <peterz@...radead.org>
Cc: Boqun Feng <boqun.feng@...il.com>
Signed-off-by: Ankur Arora <ankur.a.arora@...cle.com>
---
 include/linux/atomic.h | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/include/linux/atomic.h b/include/linux/atomic.h
index 8dd57c3a99e9..b3f77a89e9e1 100644
--- a/include/linux/atomic.h
+++ b/include/linux/atomic.h
@@ -31,6 +31,14 @@
 #define atomic64_cond_read_acquire(v, c) smp_cond_load_acquire(&(v)->counter, (c))
 #define atomic64_cond_read_relaxed(v, c) smp_cond_load_relaxed(&(v)->counter, (c))
 
+#define atomic_cond_read_acquire_timeout(v, c, t) \
+	smp_cond_load_acquire_timeout(&(v)->counter, (c), (t))
+#define atomic_cond_read_relaxed_timeout(v, c, t) \
+	smp_cond_load_relaxed_timeout(&(v)->counter, (c), (t))
+
+#define atomic64_cond_read_acquire_timeout(v, c) smp_cond_load_acquire_timeout(&(v)->counter, (c))
+#define atomic64_cond_read_relaxed_timeout(v, c) smp_cond_load_relaxed_timeout(&(v)->counter, (c))
+
 /*
  * The idea here is to build acquire/release variants by adding explicit
  * barriers on top of the relaxed variant. In the case where the relaxed
-- 
2.43.5