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kbuild, x86: Track generated headers with generated-y

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Track generated header files which aren't already in genhdr-y, alongside
generic-y wrappers in the */include/generated/[uapi/]asm/ directories.
Currently only x86 generates extra headers in these directories, for the
purposes of enumerating system calls for different ABIs, and xen
hypercalls.

This will allow the asm-generic wrapper handling code to remove stale
wrappers when files are removed from generic-y, without also removing
these headers which are generated separately.

Reported-by: kbuild test robot <[email protected]>
Signed-off-by: James Hogan <[email protected]>
Acked-by: Arnd Bergmann <[email protected]>
Cc: Jonathan Corbet <[email protected]>
Cc: [email protected]
Cc: [email protected]
Cc: Michal Marek <[email protected]>
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Thomas Gleixner <[email protected]>
This commit is contained in:
James Hogan 2016-06-24 23:42:23 +01:00 • committed by Thomas Gleixner
commit 54b880caf1
2 changed files with 20 additions and 0 deletions
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14
Documentation/kbuild/makefiles.txt
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@ -47,6 +47,7 @@ This document describes the Linux kernel Makefiles.
--- 7.2 genhdr-y
--- 7.3 destination-y
--- 7.4 generic-y
--- 7.5 generated-y
=== 8 Kbuild Variables
=== 9 Makefile language
@ -1319,6 +1320,19 @@ See subsequent chapter for the syntax of the Kbuild file.
Example: termios.h
#include <asm-generic/termios.h>
--- 7.5 generated-y
If an architecture generates other header files alongside generic-y
wrappers, and not included in genhdr-y, then generated-y specifies
them.
This prevents them being treated as stale asm-generic wrappers and
removed.
Example:
#arch/x86/include/asm/Kbuild
generated-y += syscalls_32.h
=== 8 Kbuild Variables
The top Makefile exports the following variables: