On 21 Sep 2014 21:40, "Alex Shi" alex.shi@linaro.org wrote:

I am going to cherry pick d34a3ebd8d25cf691a94fae66a957a480cf46430 into

lsk/v3.10/topic/android-fixed branch

and merge it into lsk-anroid branch to fix the build failure issue. Any

objections for this?

None from me.

/arch/arm64/kernel/ptrace.c:1112:3: error: implicit declaration of

function 'regs_return_value' [-Werror=implicit-function-declaration]

Regards! Alex

=============== commit d34a3ebd8d25cf691a94fae66a957a480cf46430 Author: AKASHI Takahiro takahiro.akashi@linaro.org Date: Wed Apr 30 10:51:31 2014 +0100

arm64: Add regs_return_value() in syscall.h

This macro, regs_return_value, is used mainly for audit to record

system

call's results, but may also be used in test_kprobes.c.

Acked-by: Will Deacon <will.deacon@arm.com>
Acked-by: Richard Guy Briggs <rgb@redhat.com>
Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>

diff --git a/arch/arm64/include/asm/ptrace.h

b/arch/arm64/include/asm/ptrace.h

index c7ba261..a429b59 100644 --- a/arch/arm64/include/asm/ptrace.h +++ b/arch/arm64/include/asm/ptrace.h @@ -135,6 +135,11 @@ struct pt_regs { #define user_stack_pointer(regs) \ (!compat_user_mode(regs)) ? ((regs)->sp) : ((regs)->compat_sp)

+static inline unsigned long regs_return_value(struct pt_regs *regs) +{

•   return regs->regs[0];
  

+}

/*

• Are the current registers suitable for user mode? (used to maintain
• security in signal handlers)

-- Thanks Alex