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1/* SPDX-License-Identifier: GPL-2.0 */
2#ifndef _ASM_GENERIC_ERROR_INJECTION_H
3#define _ASM_GENERIC_ERROR_INJECTION_H
4
5#if defined(__KERNEL__) && !defined(__ASSEMBLY__)
6enum {
7 EI_ETYPE_NONE, /* Dummy value for undefined case */
8 EI_ETYPE_NULL, /* Return NULL if failure */
9 EI_ETYPE_ERRNO, /* Return -ERRNO if failure */
10 EI_ETYPE_ERRNO_NULL, /* Return -ERRNO or NULL if failure */
11};
12
13struct error_injection_entry {
14 unsigned long addr;
15 int etype;
16};
17
18#ifdef CONFIG_FUNCTION_ERROR_INJECTION
19/*
20 * Whitelist ganerating macro. Specify functions which can be
21 * error-injectable using this macro.
22 */
23#define ALLOW_ERROR_INJECTION(fname, _etype) \
24static struct error_injection_entry __used \
25 __attribute__((__section__("_error_injection_whitelist"))) \
26 _eil_addr_##fname = { \
27 .addr = (unsigned long)fname, \
28 .etype = EI_ETYPE_##_etype, \
29 };
30#else
31#define ALLOW_ERROR_INJECTION(fname, _etype)
32#endif
33#endif
34
35#endif /* _ASM_GENERIC_ERROR_INJECTION_H */