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Date: Tue, 24 Mar 2015 19:50:18 +0100
From: Denys Vlasenko <dvlasenk@redhat.com>
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To: Ingo Molnar <mingo@kernel.org>
CC: Andy Lutomirski <luto@amacapital.net>,
        Linus Torvalds <torvalds@linux-foundation.org>,
        Steven Rostedt <rostedt@goodmis.org>, Borislav Petkov <bp@alien8.de>,
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        Alexei Starovoitov <ast@plumgrid.com>, Will Drewry <wad@chromium.org>,
        Kees Cook <keescook@chromium.org>, x86@kernel.org,
        linux-kernel@vger.kernel.org
Subject: Re: [PATCH] x86/asm/entry/64: Merge the field offset into the THREAD_INFO()
 macro
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On 03/24/2015 07:44 PM, Ingo Molnar wrote:
> From 11e2761ba0969466299b7109eba749d2292e8796 Mon Sep 17 00:00:00 2001
> From: Ingo Molnar <mingo@kernel.org>
> Date: Tue, 24 Mar 2015 19:18:41 +0100
> Subject: [PATCH] x86/asm/entry/64: Merge the field offset into the THREAD_INFO() macro
> 
> Before:
> 
>    TI_sysenter_return+THREAD_INFO(%rsp,3*8),%r10d
> 
> After:
> 
>    movl    THREAD_INFO(TI_sysenter_return, %rsp, 3*8), %r10d
> 
> to turn it into a clear thread_info accessor.

Good idea, I also wanted to do this.
I propose a more C-like order of arguments instead.
In C, field names are on the right: obj.field, ptr->field.

    THREAD_INFO(%rsp, 3*8, TI_field_name)

would suggest to the reader a pseudo-C construct:

    THREAD_INFO(sp, offset)->field_name