linux-kernel - Re: [PATCH 15/15] x86/headers: Remove <asm/sigcontext.h>

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Date:	Sat, 5 Sep 2015 15:11:08 +0300
From:	Mikko Rapeli <mikko.rapeli@....fi>
To:	Ingo Molnar <mingo@...nel.org>
Cc:	linux-kernel@...r.kernel.org,
	Andy Lutomirski <luto@...capital.net>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Denys Vlasenko <dvlasenk@...hat.com>,
	Brian Gerst <brgerst@...il.com>,
	Peter Zijlstra <peterz@...radead.org>,
	Borislav Petkov <bp@...en8.de>,
	"H. Peter Anvin" <hpa@...or.com>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Oleg Nesterov <oleg@...hat.com>,
	Thomas Gleixner <tglx@...utronix.de>
Subject: Re: [PATCH 15/15] x86/headers: Remove <asm/sigcontext.h>

On Sat, Sep 05, 2015 at 01:59:43PM +0200, Ingo Molnar wrote:
> 
> * Mikko Rapeli <mikko.rapeli@....fi> wrote:
> 
> > > diff --git a/arch/x86/include/uapi/asm/sigcontext32.h b/arch/x86/include/uapi/asm/sigcontext32.h
> > > index a92b0f0dc09e..8b870175befa 100644
> > > --- a/arch/x86/include/uapi/asm/sigcontext32.h
> > > +++ b/arch/x86/include/uapi/asm/sigcontext32.h
> > > @@ -3,6 +3,6 @@
> > >  
> > >  /* This is a legacy file - all the type definitions are in sigcontext.h: */
> > >  
> > > -#include <asm/sigcontext.h>
> > > +#include <uapi/asm/sigcontext.h>
> > 
> > This needs to be without uapi directory in path.
> 
> What do you mean?

There is not uapi in path in userspace so it fails to compile:

cc -Wall -c -nostdinc -I /usr/lib/gcc/i586-linux-gnu/5/include -I /usr/lib/gcc/i
586-linux-gnu/5/include-fixed -I . -I ../headers_compile_test_include -I ../head
ers_compile_test_include/i586-linux-gnu ./asm/sigcontext32.c
In file included from ./asm/sigcontext32.c:1:0:
./asm/sigcontext32.h:6:33: fatal error: uapi/asm/sigcontext.h: No such file or d
irectory
compilation terminated.
FAILED: ./asm/sigcontext32.h

This is the fix:

--- a/arch/x86/include/uapi/asm/sigcontext32.h
+++ b/arch/x86/include/uapi/asm/sigcontext32.h
@@ -3,6 +3,6 @@
 
 /* This is a legacy file - all the type definitions are in sigcontext.h: */
 
-#include <uapi/asm/sigcontext.h>
+#include <asm/sigcontext.h>
 
 #endif /* _ASM_X86_SIGCONTEXT32_H */

-Mikko
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