mirror of
https://github.com/torvalds/linux.git
synced 2024-11-19 02:21:47 +00:00
45880f7b7b
The function override_function_with_return() is defined separately for each architecture and every architecture's definition is almost same with each other. E.g. x86 and powerpc both define function in its own asm/error-injection.h header and override_function_with_return() has the same definition, the only difference is that x86 defines an extra function just_return_func() but it is specific for x86 and is only used by x86's override_function_with_return(), so don't need to export this function. This patch consolidates override_function_with_return() definition into asm-generic/error-injection.h header, thus all architectures can use the common definition. As result, the architecture specific headers are removed; the include/linux/error-injection.h header also changes to include asm-generic/error-injection.h header rather than architecture header, furthermore, it includes linux/compiler.h for successful compilation. Reviewed-by: Masami Hiramatsu <mhiramat@kernel.org> Signed-off-by: Leo Yan <leo.yan@linaro.org> Signed-off-by: Will Deacon <will@kernel.org>
43 lines
1.2 KiB
C
43 lines
1.2 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
#ifndef _ASM_GENERIC_ERROR_INJECTION_H
|
|
#define _ASM_GENERIC_ERROR_INJECTION_H
|
|
|
|
#if defined(__KERNEL__) && !defined(__ASSEMBLY__)
|
|
enum {
|
|
EI_ETYPE_NONE, /* Dummy value for undefined case */
|
|
EI_ETYPE_NULL, /* Return NULL if failure */
|
|
EI_ETYPE_ERRNO, /* Return -ERRNO if failure */
|
|
EI_ETYPE_ERRNO_NULL, /* Return -ERRNO or NULL if failure */
|
|
EI_ETYPE_TRUE, /* Return true if failure */
|
|
};
|
|
|
|
struct error_injection_entry {
|
|
unsigned long addr;
|
|
int etype;
|
|
};
|
|
|
|
struct pt_regs;
|
|
|
|
#ifdef CONFIG_FUNCTION_ERROR_INJECTION
|
|
/*
|
|
* Whitelist ganerating macro. Specify functions which can be
|
|
* error-injectable using this macro.
|
|
*/
|
|
#define ALLOW_ERROR_INJECTION(fname, _etype) \
|
|
static struct error_injection_entry __used \
|
|
__attribute__((__section__("_error_injection_whitelist"))) \
|
|
_eil_addr_##fname = { \
|
|
.addr = (unsigned long)fname, \
|
|
.etype = EI_ETYPE_##_etype, \
|
|
};
|
|
|
|
void override_function_with_return(struct pt_regs *regs);
|
|
#else
|
|
#define ALLOW_ERROR_INJECTION(fname, _etype)
|
|
|
|
static inline void override_function_with_return(struct pt_regs *regs) { }
|
|
#endif
|
|
#endif
|
|
|
|
#endif /* _ASM_GENERIC_ERROR_INJECTION_H */
|