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git.proxmox.com Git - mirror_ubuntu-jammy-kernel.git/blob - kernel/kcsan/atomic.h
1 /* SPDX-License-Identifier: GPL-2.0 */
3 #ifndef _KERNEL_KCSAN_ATOMIC_H
4 #define _KERNEL_KCSAN_ATOMIC_H
6 #include <linux/jiffies.h>
7 #include <linux/sched.h>
10 * Special rules for certain memory where concurrent conflicting accesses are
11 * common, however, the current convention is to not mark them; returns true if
12 * access to @ptr should be considered atomic. Called from slow-path.
14 static bool kcsan_is_atomic_special(const volatile void *ptr
)
16 /* volatile globals that have been observed in data races. */
17 return ptr
== &jiffies
|| ptr
== ¤t
->state
;
20 #endif /* _KERNEL_KCSAN_ATOMIC_H */