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b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
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2 | #ifndef _LINUX_PERF_REGS_H |
3 | #define _LINUX_PERF_REGS_H | |
4 | ||
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5 | #include <linux/sched/task_stack.h> |
6 | ||
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7 | struct perf_regs { |
8 | __u64 abi; | |
9 | struct pt_regs *regs; | |
10 | }; | |
11 | ||
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12 | #ifdef CONFIG_HAVE_PERF_REGS |
13 | #include <asm/perf_regs.h> | |
14 | u64 perf_reg_value(struct pt_regs *regs, int idx); | |
15 | int perf_reg_validate(u64 mask); | |
4018994f | 16 | u64 perf_reg_abi(struct task_struct *task); |
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17 | void perf_get_regs_user(struct perf_regs *regs_user, |
18 | struct pt_regs *regs, | |
19 | struct pt_regs *regs_user_copy); | |
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20 | #else |
21 | static inline u64 perf_reg_value(struct pt_regs *regs, int idx) | |
22 | { | |
23 | return 0; | |
24 | } | |
25 | ||
26 | static inline int perf_reg_validate(u64 mask) | |
27 | { | |
28 | return mask ? -ENOSYS : 0; | |
29 | } | |
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30 | |
31 | static inline u64 perf_reg_abi(struct task_struct *task) | |
32 | { | |
33 | return PERF_SAMPLE_REGS_ABI_NONE; | |
34 | } | |
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35 | |
36 | static inline void perf_get_regs_user(struct perf_regs *regs_user, | |
37 | struct pt_regs *regs, | |
38 | struct pt_regs *regs_user_copy) | |
39 | { | |
40 | regs_user->regs = task_pt_regs(current); | |
41 | regs_user->abi = perf_reg_abi(current); | |
42 | } | |
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43 | #endif /* CONFIG_HAVE_PERF_REGS */ |
44 | #endif /* _LINUX_PERF_REGS_H */ |