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| author |  Qing Zhang <zhangqing@loongson.cn>
| 2023-05-01 17:19:52 +0800 |
|---|---|---|
| committer |  Huacai Chen <chenhuacai@loongson.cn>
| 2023-05-01 17:19:52 +0800 |
| commit | 6fbff14a638293dcd0550cac2921f308ef6abe0e (patch) | |
| tree | 4612a1a5f0f7752d7059be85959b788ae6c276ef /arch/loongarch | |
| parent | LoongArch: Add support for function error injection (diff) | |
| download | linux-6fbff14a638293dcd0550cac2921f308ef6abe0e.tar.gz linux-6fbff14a638293dcd0550cac2921f308ef6abe0e.tar.bz2 linux-6fbff14a638293dcd0550cac2921f308ef6abe0e.zip | |
LoongArch: ftrace: Abstract DYNAMIC_FTRACE_WITH_ARGS accesses
Add new ftrace_regs_{get,set}_*() helpers which can be used to manipulate
ftrace_regs. When CONFIG_HAVE_DYNAMIC_FTRACE_WITH_ARGS=y, these can always
be used on any ftrace_regs, and when CONFIG_HAVE_DYNAMIC_FTRACE_WITH_ARGS
=n these can be used when regs are available.
Signed-off-by: Qing Zhang <zhangqing@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
Diffstat (limited to 'arch/loongarch')
| -rw-r--r-- | arch/loongarch/include/asm/ftrace.h | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/arch/loongarch/include/asm/ftrace.h b/arch/loongarch/include/asm/ftrace.h index 3418d32d4fc7..aa5c57b5f333 100644 --- a/arch/loongarch/include/asm/ftrace.h +++ b/arch/loongarch/include/asm/ftrace.h @@ -54,6 +54,31 @@ static __always_inline struct pt_regs *arch_ftrace_get_regs(struct ftrace_regs * return &fregs->regs; } +static __always_inline unsigned long +ftrace_regs_get_instruction_pointer(struct ftrace_regs *fregs) +{ + return instruction_pointer(&fregs->regs); +} + +static __always_inline void +ftrace_regs_set_instruction_pointer(struct ftrace_regs *fregs, unsigned long ip) +{ + regs_set_return_value(&fregs->regs, ip); +} + +#define ftrace_regs_get_argument(fregs, n) \ + regs_get_kernel_argument(&(fregs)->regs, n) +#define ftrace_regs_get_stack_pointer(fregs) \ + kernel_stack_pointer(&(fregs)->regs) +#define ftrace_regs_return_value(fregs) \ + regs_return_value(&(fregs)->regs) +#define ftrace_regs_set_return_value(fregs, ret) \ + regs_set_return_value(&(fregs)->regs, ret) +#define ftrace_override_function_with_return(fregs) \ + override_function_with_return(&(fregs)->regs) +#define ftrace_regs_query_register_offset(name) \ + regs_query_register_offset(name) + #define ftrace_graph_func ftrace_graph_func void ftrace_graph_func(unsigned long ip, unsigned long parent_ip, struct ftrace_ops *op, struct ftrace_regs *fregs); |