From: Josh Poimboeuf <jpoimboe@kernel.org>
Date: Tue, 1 Apr 2025 04:26:46 +0000 (-0700)
Subject: rcu-tasks: Always inline rcu_irq_work_resched()
X-Git-Tag: v6.12.23~176
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=d80168db5e0c68426c67c7568e12b4b8a4550abf;p=thirdparty%2Fkernel%2Fstable.git

rcu-tasks: Always inline rcu_irq_work_resched()

[ Upstream commit 6309a5c43b0dc629851f25b2e5ef8beff61d08e5 ]

Thanks to CONFIG_DEBUG_SECTION_MISMATCH, empty functions can be
generated out of line.  rcu_irq_work_resched() can be called from
noinstr code, so make sure it's always inlined.

Fixes: 564506495ca9 ("rcu/context-tracking: Move deferred nocb resched to context tracking")
Reported-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Josh Poimboeuf <jpoimboe@kernel.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Cc: Frederic Weisbecker <frederic@kernel.org>
Cc: Paul E. McKenney <paulmck@kernel.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Link: https://lore.kernel.org/r/e84f15f013c07e4c410d972e75620c53b62c1b3e.1743481539.git.jpoimboe@kernel.org
Closes: https://lore.kernel.org/d1eca076-fdde-484a-b33e-70e0d167c36d@infradead.org
Signed-off-by: Sasha Levin <sashal@kernel.org>
---

diff --git a/include/linux/rcupdate.h b/include/linux/rcupdate.h
index 48e5c03df1dd8..bd69ddc102fbc 100644
--- a/include/linux/rcupdate.h
+++ b/include/linux/rcupdate.h
@@ -138,7 +138,7 @@ static inline void rcu_sysrq_end(void) { }
 #if defined(CONFIG_NO_HZ_FULL) && (!defined(CONFIG_GENERIC_ENTRY) || !defined(CONFIG_KVM_XFER_TO_GUEST_WORK))
 void rcu_irq_work_resched(void);
 #else
-static inline void rcu_irq_work_resched(void) { }
+static __always_inline void rcu_irq_work_resched(void) { }
 #endif
 
 #ifdef CONFIG_RCU_NOCB_CPU