linux-kernel - [PATCH 02/13] READ_ONCE: Undefine internal __READ_ONCE

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Date:   Fri,  8 Nov 2019 17:01:09 +0000
From:   Will Deacon <will@...nel.org>
To:     linux-kernel@...r.kernel.org
Cc:     Will Deacon <will@...nel.org>, Yunjae Lee <lyj7694@...il.com>,
        SeongJae Park <sj38.park@...il.com>,
        "Paul E. McKenney" <paulmck@...nel.org>,
        Josh Triplett <josh@...htriplett.org>,
        Matt Turner <mattst88@...il.com>,
        Ivan Kokshaysky <ink@...assic.park.msu.ru>,
        Richard Henderson <rth@...ddle.net>,
        Peter Zijlstra <peterz@...radead.org>,
        Alan Stern <stern@...land.harvard.edu>,
        Michael Ellerman <mpe@...erman.id.au>,
        "Michael S. Tsirkin" <mst@...hat.com>,
        Jason Wang <jasowang@...hat.com>,
        Arnd Bergmann <arnd@...db.de>, Joe Perches <joe@...ches.com>,
        Boqun Feng <boqun.feng@...il.com>, linux-alpha@...r.kernel.org,
        virtualization@...ts.linux-foundation.org
Subject: [PATCH 02/13] READ_ONCE: Undefine internal __READ_ONCE_SIZE macro after use

The '__READ_ONCE_SIZE()' macro is only used as part of building
'READ_ONCE()', so undefine it once we don't need it anymore.

Signed-off-by: Will Deacon <will@...nel.org>
---
 include/asm-generic/rwonce.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/include/asm-generic/rwonce.h b/include/asm-generic/rwonce.h
index d189455ae038..abf326634ecd 100644
--- a/include/asm-generic/rwonce.h
+++ b/include/asm-generic/rwonce.h
@@ -59,6 +59,8 @@ void __read_once_size_nocheck(const volatile void *p, void *res, int size)
 	__READ_ONCE_SIZE;
 }
 
+#undef __READ_ONCE_SIZE
+
 static __always_inline void __write_once_size(volatile void *p, void *res, int size)
 {
 	switch (size) {
-- 
2.24.0.rc1.363.gb1bccd3e3d-goog