On Mon, 15 May 2017 23:35:03 +0530
"Naveen N. Rao" <naveen.n....@linux.vnet.ibm.com> wrote:
> diff --git a/arch/powerpc/include/asm/kprobes.h 
> b/arch/powerpc/include/asm/kprobes.h
> index a83821f33ea3..b6960ef213ac 100644
> --- a/arch/powerpc/include/asm/kprobes.h
> +++ b/arch/powerpc/include/asm/kprobes.h
> @@ -61,6 +61,15 @@ extern kprobe_opcode_t optprobe_template_end[];
>  #define MAX_OPTINSN_SIZE     (optprobe_template_end - 
> optprobe_template_entry)
>  #define RELATIVEJUMP_SIZE    sizeof(kprobe_opcode_t) /* 4 bytes */
>  
> +/* Save upto 16 parameters along with the stack frame header */
> +#define MAX_STACK_SIZE               (STACK_FRAME_PARM_SAVE + (16 * 
> sizeof(unsigned long)))
> +#define MIN_STACK_SIZE(ADDR)                                        \
> +     (((MAX_STACK_SIZE) < (((unsigned long)current_thread_info()) + \
> +                           THREAD_SIZE - (unsigned long)(ADDR)))    \
> +      ? (MAX_STACK_SIZE)                                            \
> +      : (((unsigned long)current_thread_info()) +                   \
> +         THREAD_SIZE - (unsigned long)(ADDR)))

Could you add CUR_STACK_SIZE(addr) as x86 does instead of repeating similar 
code?

Thank you,


-- 
Masami Hiramatsu <mhira...@kernel.org>

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