[linux-yocto] [PATCH] tracing/x86: Fix compilation failure when CONFIG_TRACE_IRQFLAGS is off

[He Zhe]

This is for all branches from 4.19 to 5.0.

Zhe

On 4/28/19 6:52 PM, zhe.he at windriver.com wrote:
> From: He Zhe <zhe.he at windriver.com>
>
> b470fb994ebd ("tracing/x86: Save CR2 before tracing irqsoff on error_entry")
> misses a "#ifdef".
>
> Signed-off-by: He Zhe <zhe.he at windriver.com>
> ---
>  arch/x86/entry/common.c | 2 ++
>  1 file changed, 2 insertions(+)
>
> diff --git a/arch/x86/entry/common.c b/arch/x86/entry/common.c
> index 48a0a59..56d54d30 100644
> --- a/arch/x86/entry/common.c
> +++ b/arch/x86/entry/common.c
> @@ -308,6 +308,7 @@ __visible void do_syscall_64(unsigned long nr, struct pt_regs *regs)
>  	syscall_return_slowpath(regs);
>  }
>  
> +#ifdef CONFIG_TRACE_IRQFLAGS
>  extern void trace_hardirqs_on_caller(unsigned long caller_addr);
>  __visible void trace_hardirqs_on_caller_cr2(unsigned long caller_addr)
>  {
> @@ -334,6 +335,7 @@ __visible void trace_hardirqs_off_caller_cr2(unsigned long caller_addr)
>  	exception_exit(prev_state);
>  }
>  #endif
> +#endif
>  
>  #if defined(CONFIG_X86_32) || defined(CONFIG_IA32_EMULATION)
>  /*