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authorMarco Elver <elver@google.com>2020-06-16 15:36:24 +0300
committerPaul E. McKenney <paulmck@kernel.org>2020-06-29 22:04:48 +0300
commit7e766560e6e2c1cf2782f00e63c31564e4c9f0fe (patch)
treefb95456a7519cd011f39be32880cb0d9bce2d314 /kernel/kcsan
parentacfa087ccf2d2eff46186477f53e4c3ffbdb033d (diff)
downloadlinux-7e766560e6e2c1cf2782f00e63c31564e4c9f0fe.tar.xz
kcsan: Remove existing special atomic rules
Remove existing special atomic rules from kcsan_is_atomic_special() because they are no longer needed. Since we rely on the compiler emitting instrumentation distinguishing volatile accesses, the rules have become redundant. Let's keep kcsan_is_atomic_special() around, so that we have an obvious place to add special rules should the need arise in future. Signed-off-by: Marco Elver <elver@google.com> Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
Diffstat (limited to 'kernel/kcsan')
-rw-r--r--kernel/kcsan/atomic.h6
1 files changed, 2 insertions, 4 deletions
diff --git a/kernel/kcsan/atomic.h b/kernel/kcsan/atomic.h
index be9e625227f3..75fe701f4127 100644
--- a/kernel/kcsan/atomic.h
+++ b/kernel/kcsan/atomic.h
@@ -3,8 +3,7 @@
#ifndef _KERNEL_KCSAN_ATOMIC_H
#define _KERNEL_KCSAN_ATOMIC_H
-#include <linux/jiffies.h>
-#include <linux/sched.h>
+#include <linux/types.h>
/*
* Special rules for certain memory where concurrent conflicting accesses are
@@ -13,8 +12,7 @@
*/
static bool kcsan_is_atomic_special(const volatile void *ptr)
{
- /* volatile globals that have been observed in data races. */
- return ptr == &jiffies || ptr == &current->state;
+ return false;
}
#endif /* _KERNEL_KCSAN_ATOMIC_H */