[to-be-updated] asm-generic-barrier-add-smp_cond_load_acquire_timeout.patch removed from -mm tree

[Andrew Morton <akpm@linux-foundation.org>]

The quilt patch titled
     Subject: asm-generic: barrier: add smp_cond_load_acquire_timeout()
has been removed from the -mm tree.  Its filename was
     asm-generic-barrier-add-smp_cond_load_acquire_timeout.patch

This patch was dropped because an updated version will be issued

------------------------------------------------------
From: Ankur Arora <ankur.a.arora@oracle.com>
Subject: asm-generic: barrier: add smp_cond_load_acquire_timeout()
Date: Wed, 8 Apr 2026 17:55:30 +0530

Add the acquire variant of smp_cond_load_relaxed_timeout().  This reuses
the relaxed variant, with additional LOAD->LOAD ordering.

Link: https://lore.kernel.org/20260408122538.3610871-7-ankur.a.arora@oracle.com
Signed-off-by: Ankur Arora <ankur.a.arora@oracle.com>
Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
Reviewed-by: Haris Okanovic <harisokn@amazon.com>
Tested-by: Haris Okanovic <harisokn@amazon.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Will Deacon <will@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Alexei Starovoitov <ast@kernel.org>
Cc: Bjorn Andersson <andersson@kernel.org>
Cc: Boqun Feng <boqun.feng@gmail.com>
Cc: Boqun Feng <boqun@kernel.org>
Cc: Christoph Lameter <cl@linux.com>
Cc: Daniel Lezcano <daniel.lezcano@linaro.org>
Cc: David Gow <davidgow@google.com>
Cc: Gary Guo <gary@garyguo.net>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Konrad Dybcio <konradybcio@kernel.org>
Cc: Kumar Kartikeya Dwivedi <memxor@gmail.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Rafael J. Wysocki (Intel) <rafael@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 include/asm-generic/barrier.h |   26 ++++++++++++++++++++++++++
 1 file changed, 26 insertions(+)

--- a/include/asm-generic/barrier.h~asm-generic-barrier-add-smp_cond_load_acquire_timeout
+++ a/include/asm-generic/barrier.h
@@ -342,6 +342,32 @@ do {									\
 })
 #endif
 
+/**
+ * smp_cond_load_acquire_timeout() - (Spin) wait for cond with ACQUIRE ordering
+ * until a timeout expires.
+ * @ptr: pointer to the variable to wait on.
+ * @cond_expr: boolean expression to wait for.
+ * @time_expr_ns: monotonic expression that evaluates to time in ns or,
+ *  on failure, returns a negative value.
+ * @timeout_ns: timeout value in ns
+ * (Both of the above are assumed to be compatible with s64.)
+ *
+ * Equivalent to using smp_cond_load_acquire() on the condition variable with
+ * a timeout.
+ */
+#ifndef smp_cond_load_acquire_timeout
+#define smp_cond_load_acquire_timeout(ptr, cond_expr,			\
+				      time_expr_ns, timeout_ns)		\
+({									\
+	__unqual_scalar_typeof(*ptr) _val;				\
+	_val = smp_cond_load_relaxed_timeout(ptr, cond_expr,		\
+					     time_expr_ns,		\
+					     timeout_ns);		\
+	smp_acquire__after_ctrl_dep();					\
+	(typeof(*ptr))_val;						\
+})
+#endif
+
 /*
  * pmem_wmb() ensures that all stores for which the modification
  * are written to persistent storage by preceding instructions have
_

Patches currently in -mm which might be from ankur.a.arora@oracle.com are

atomic-add-atomic_cond_read__timeout.patch
locking-atomic-scripts-build-atomic_long_cond_read__timeout.patch
bpf-rqspinlock-switch-check_timeout-to-a-clock-interface.patch
bpf-rqspinlock-use-smp_cond_load_acquire_timeout.patch
sched-add-need-resched-timed-wait-interface.patch
cpuidle-poll_state-wait-for-need-resched-via-tif_need_resched_relaxed_wait.patch
kunit-enable-testing-smp_cond_load_relaxed_timeout.patch
kunit-add-tests-for-smp_cond_load_relaxed_timeout.patch