linux-kernel - [PATCH] kcsan: Prefer '__no

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Message-Id: <20200602143633.104439-1-elver@google.com>
Date:   Tue,  2 Jun 2020 16:36:33 +0200
From:   Marco Elver <elver@...gle.com>
To:     elver@...gle.com
Cc:     paulmck@...nel.org, kasan-dev@...glegroups.com,
        linux-kernel@...r.kernel.org, Peter Zijlstra <peterz@...radead.org>
Subject: [PATCH] kcsan: Prefer '__no_kcsan inline' in test

Instead of __no_kcsan_or_inline, prefer '__no_kcsan inline' in test --
this is in case we decide to remove __no_kcsan_or_inline.

Suggested-by: Peter Zijlstra <peterz@...radead.org>
Signed-off-by: Marco Elver <elver@...gle.com>
---

Hi Paul,

This is to prepare eventual removal of __no_kcsan_or_inline, and avoid a
series that doesn't apply to anything other than -next (because some
bits are in -tip and the test only in -rcu; although this problem might
be solved in 2 weeks). This patch is to make sure in case the
__kcsan_or_inline series is based on -tip, integration in -next doesn't
cause problems.

This came up in
https://lkml.kernel.org/r/20200529185923.GO706495@hirez.programming.kicks-ass.net

Thanks,
-- Marco

---
 kernel/kcsan/kcsan-test.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/kernel/kcsan/kcsan-test.c b/kernel/kcsan/kcsan-test.c
index a8c11506dd2a..3af420ad6ee7 100644
--- a/kernel/kcsan/kcsan-test.c
+++ b/kernel/kcsan/kcsan-test.c
@@ -43,7 +43,7 @@ static struct {
 };
 
 /* Setup test checking loop. */
-static __no_kcsan_or_inline void
+static __no_kcsan inline void
 begin_test_checks(void (*func1)(void), void (*func2)(void))
 {
 	kcsan_disable_current();
@@ -60,7 +60,7 @@ begin_test_checks(void (*func1)(void), void (*func2)(void))
 }
 
 /* End test checking loop. */
-static __no_kcsan_or_inline bool
+static __no_kcsan inline bool
 end_test_checks(bool stop)
 {
 	if (!stop && time_before(jiffies, end_time)) {
-- 
2.27.0.rc2.251.g90737beb825-goog