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Documentation/prctl: don't build tsc tests when cross compiling

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The following was seen in linux-next build coverage, which is somewhat
unique since it uses powerpc host to cross compile x86:

Documentation/prctl/disable-tsc-on-off-stress-test.c:36:1: error:
 impossible register constraint in 'asm'
Documentation/prctl/disable-tsc-ctxt-sw-stress-test.c:34:1: error:
 impossible register constraint in 'asm'
Documentation/prctl/disable-tsc-test.c:36:1: error: impossible
 register constraint in 'asm'

It probably makes sense to just skip building these tests when
we are cross compiling.

Cc: Jonathan Corbet <corbet@lwn.net>
Cc: linux-doc@vger.kernel.org
Cc: Erik Bosman <ejbosman@cs.vu.nl>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
This commit is contained in:
Paul Gortmaker 2015-06-20 21:22:20 -04:00 committed by Jonathan Corbet
parent 6a407a81a9
commit f59514b6a8
1 changed files with 2 additions and 0 deletions
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2
Documentation/prctl/Makefile
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@ -1,3 +1,4 @@
ifndef CROSS_COMPILE
# List of programs to build # List of programs to build
hostprogs-$(CONFIG_X86) := disable-tsc-ctxt-sw-stress-test disable-tsc-on-off-stress-test disable-tsc-test hostprogs-$(CONFIG_X86) := disable-tsc-ctxt-sw-stress-test disable-tsc-on-off-stress-test disable-tsc-test
# Tell kbuild to always build the programs # Tell kbuild to always build the programs
@ -6,3 +7,4 @@ always := $(hostprogs-y)
HOSTCFLAGS_disable-tsc-ctxt-sw-stress-test.o += -I$(objtree)/usr/include HOSTCFLAGS_disable-tsc-ctxt-sw-stress-test.o += -I$(objtree)/usr/include
HOSTCFLAGS_disable-tsc-on-off-stress-test.o += -I$(objtree)/usr/include HOSTCFLAGS_disable-tsc-on-off-stress-test.o += -I$(objtree)/usr/include
HOSTCFLAGS_disable-tsc-test.o += -I$(objtree)/usr/include HOSTCFLAGS_disable-tsc-test.o += -I$(objtree)/usr/include
endif