1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef PERF_CACHELINE_H
3 #define PERF_CACHELINE_H
4
5 #include <linux/compiler.h>
6
7 int __pure cacheline_size(void);
8
9
10 /*
11 * Some architectures have 'Adjacent Cacheline Prefetch' feature,
12 * which performs like the cacheline size being doubled.
13 */
14 static inline u64 cl_address(u64 address, bool double_cl)
15 {
16 u64 size = cacheline_size();
17
18 if (double_cl)
19 size *= 2;
20
21 /* return the cacheline of the address */
22 return (address & ~(size - 1));
23 }
24
25 static inline u64 cl_offset(u64 address, bool double_cl)
26 {
27 u64 size = cacheline_size();
28
29 if (double_cl)
30 size *= 2;
31
32 /* return the offset inside cacheline */
33 return (address & (size - 1));
34 }
35
36 #endif // PERF_CACHELINE_H
37
Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.