provide linux/set_memory.h
authorMichael Ellerman <mpe@ellerman.id.au>
Thu, 6 Jul 2017 22:35:52 +0000 (15:35 -0700)
committerLinus Torvalds <torvalds@linux-foundation.org>
Thu, 6 Jul 2017 23:24:30 +0000 (16:24 -0700)
commit938f846492d6682584cbe4f3f19c4ebffec46311
tree97790d3b02cbac5aa520cc318b3adfaa6e8f261c
parentd9f91f844c42e07bbde1c348a8c96a040fc3dddb
provide linux/set_memory.h

Currently code that wants to use set_memory_ro() etc, needs to include
asm/set_memory.h, which doesn't exist on all arches.  Some code knows it
only builds on arches which have the header, other code guards the
inclusion with an #ifdef, neither is ideal.

So create linux/set_memory.h.  This always exists, so users don't need
an #ifdef just to include the header.

When CONFIG_ARCH_HAS_SET_MEMORY=y it includes asm/set_memory.h,
otherwise it provides empty non-failing implementations.

Link: http://lkml.kernel.org/r/1498717781-29151-1-git-send-email-mpe@ellerman.id.au
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Kees Cook <keescook@chromium.org>
Acked-by: Laura Abbott <labbott@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
include/linux/set_memory.h [new file with mode: 0644]