linux-kernel - [PATCH v4 tip/core/rcu 12/15] kcsan: Move kcsan_{disable,enable}

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Message-Id: <20200415183411.12368-12-paulmck@kernel.org>
Date:   Wed, 15 Apr 2020 11:34:08 -0700
From:   paulmck@...nel.org
To:     linux-kernel@...r.kernel.org, kasan-dev@...glegroups.com,
        kernel-team@...com, mingo@...nel.org
Cc:     elver@...gle.com, andreyknvl@...gle.com, glider@...gle.com,
        dvyukov@...gle.com, cai@....pw, boqun.feng@...il.com,
        "Paul E . McKenney" <paulmck@...nel.org>
Subject: [PATCH v4 tip/core/rcu 12/15] kcsan: Move kcsan_{disable,enable}_current() to kcsan-checks.h

From: Marco Elver <elver@...gle.com>

Both affect access checks, and should therefore be in kcsan-checks.h.
This is in preparation to use these in compiler.h.

Acked-by: Will Deacon <will@...nel.org>
Signed-off-by: Marco Elver <elver@...gle.com>
Signed-off-by: Paul E. McKenney <paulmck@...nel.org>
---
 include/linux/kcsan-checks.h | 16 ++++++++++++++++
 include/linux/kcsan.h        | 16 ----------------
 2 files changed, 16 insertions(+), 16 deletions(-)

diff --git a/include/linux/kcsan-checks.h b/include/linux/kcsan-checks.h
index 101df7f..ef95ddc 100644
--- a/include/linux/kcsan-checks.h
+++ b/include/linux/kcsan-checks.h
@@ -37,6 +37,20 @@
 void __kcsan_check_access(const volatile void *ptr, size_t size, int type);
 
 /**
+ * kcsan_disable_current - disable KCSAN for the current context
+ *
+ * Supports nesting.
+ */
+void kcsan_disable_current(void);
+
+/**
+ * kcsan_enable_current - re-enable KCSAN for the current context
+ *
+ * Supports nesting.
+ */
+void kcsan_enable_current(void);
+
+/**
  * kcsan_nestable_atomic_begin - begin nestable atomic region
  *
  * Accesses within the atomic region may appear to race with other accesses but
@@ -133,6 +147,8 @@ void kcsan_end_scoped_access(struct kcsan_scoped_access *sa);
 static inline void __kcsan_check_access(const volatile void *ptr, size_t size,
 					int type) { }
 
+static inline void kcsan_disable_current(void)		{ }
+static inline void kcsan_enable_current(void)		{ }
 static inline void kcsan_nestable_atomic_begin(void)	{ }
 static inline void kcsan_nestable_atomic_end(void)	{ }
 static inline void kcsan_flat_atomic_begin(void)	{ }
diff --git a/include/linux/kcsan.h b/include/linux/kcsan.h
index 17ae59e..53340d8 100644
--- a/include/linux/kcsan.h
+++ b/include/linux/kcsan.h
@@ -50,25 +50,9 @@ struct kcsan_ctx {
  */
 void kcsan_init(void);
 
-/**
- * kcsan_disable_current - disable KCSAN for the current context
- *
- * Supports nesting.
- */
-void kcsan_disable_current(void);
-
-/**
- * kcsan_enable_current - re-enable KCSAN for the current context
- *
- * Supports nesting.
- */
-void kcsan_enable_current(void);
-
 #else /* CONFIG_KCSAN */
 
 static inline void kcsan_init(void)			{ }
-static inline void kcsan_disable_current(void)		{ }
-static inline void kcsan_enable_current(void)		{ }
 
 #endif /* CONFIG_KCSAN */
 
-- 
2.9.5