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2016-09-20selftests: move vDSO tests from Documentation/vDSOShuah Khan5-468/+0
Remove vDSO from Makefile to move the to selftests. Update vDSO Makefile to work under selftests. vDSO will not be run as part of selftests suite and will not be included in install targets. They can be built separately for now. Acked-by: Jonathan Corbet <corbet@lwn.net> Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
2015-06-23Documentation/vDSO: don't build tests when cross compilingPaul Gortmaker1-0/+2
The following was seen in linux-next build coverage, which is somewhat unique since it uses powerpc host to cross compile x86: Documentation/vDSO/vdso_standalone_test_x86.c:49:2: error: impossible register constraint in 'asm' make[4]: *** [Documentation/vDSO/vdso_standalone_test_x86.o] Error 1 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: Andy Lutomirski <luto@amacapital.net> Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2014-10-25vdso: don't require 64-bit math in standalone testJeff Mahoney1-1/+1
The use of 64-bit math on i386 causes build failures: vdso_standalone_test_x86.c:(.text+0x101): undefined reference to `__umoddi3' vdso_standalone_test_x86.c:(.text+0x12d): undefined reference to `__udivdi3' Commit adb19fb66ee (Documentation: add makefiles for more targets) is now building this by default, so it's failing the kernel build entirely. Switching the declaration from uint64_t to time_t does the right thing and handles the x32 case automatically. Signed-off-by: Jeff Mahoney <jeffm@suse.com> Acked-by: Peter Foley <pefoley2@pefoley.com> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2014-10-21Documentation: fix vdso_standalone_test_x86 on 32-bitPeter Foley1-0/+3
vdso_standalone_test_x86 needs -lgcc_s to build succesfully on 32bit. Signed-off-by: Peter Foley <pefoley2@pefoley.com> [ Fixed missing separator issue reported by Paul Bolle <pebolle@tiscali.nl> ] Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2014-09-26Documentation: disable vdso_test to avoid breakage with old glibcPeter Foley1-2/+2
glibc versions older than 2.16 don't include sys/auxv.h which this executable uses. Since we don't have a good way to test for specific glibc versions in kbuild, just disable it for now. Signed-off-by: Peter Foley <pefoley2@pefoley.com> Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2014-09-26Documentation: update vDSO makefile to build portable examplesPeter Foley1-3/+6
Signed-off-by: Peter Foley <pefoley2@pefoley.com> Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2014-09-26Documentation: update .gitignore filesPeter Foley1-0/+2
Add some missing files to .gitignore. Push Documentation/.gitignore down into subdirectories. Signed-off-by: Peter Foley <pefoley2@pefoley.com> Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2014-09-26Documentation: add makefiles for more targetsPeter Foley1-0/+9
Add a bunch of previously unbuilt source files to the Documentation build machinery. Signed-off-by: Peter Foley <pefoley2@pefoley.com> Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2014-06-13x86/vdso/doc: Make vDSO examples more portableAndy Lutomirski3-41/+123
This adds a new vdso_test.c that's written entirely in C. It also makes all of the vDSO examples work on 32-bit x86. Cc: Stefani Seibold <stefani@seibold.net> Signed-off-by: Andy Lutomirski <luto@amacapital.net> Link: http://lkml.kernel.org/r/62b701fc44b79f118ac2b2d64d19965fc5c291fb.1402620737.git.luto@amacapital.net Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2014-06-13x86/vdso/doc: Rename vdso_test.c to vdso_standalone_test_x86.cAndy Lutomirski1-1/+1
This thing is hopelessly x86_64-specific: it's an example of how to access the vDSO without any runtime support at all. Signed-off-by: Andy Lutomirski <luto@amacapital.net> Link: http://lkml.kernel.org/r/3efc170e0e166e15f0150c9fdb37d52488b9c0a4.1402620737.git.luto@amacapital.net Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2011-07-15Document the vDSO and add a reference parserAndy Lutomirski2-0/+367
It turns out that parsing the vDSO is nontrivial if you don't already have an ELF dynamic loader around. So document it in Documentation/ABI and add a reference CC0-licenced parser. This code is dedicated to Go issue 1933: http://code.google.com/p/go/issues/detail?id=1933 Signed-off-by: Andy Lutomirski <luto@mit.edu> Link: http://lkml.kernel.org/r/a315a9514cd71bcf29436cc31e35aada21a5ff21.1310563276.git.luto@mit.edu Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>