Re: [patch 6/8] kcmp selftests: build fix

From: Pekka Enberg
Date: Sat Nov 24 2012 - 04:42:29 EST


On Sat, Nov 24, 2012 at 10:29 AM, <dyoung@xxxxxxxxxx> wrote:
> For old glibc there's no the syscall number this tests will cause
> make run_tests fail.
> Add a macro to define the number. This should be ok because it will be
> built in latest kernel source.
>
> Signed-off-by: Dave Young <dyoung@xxxxxxxxxx>
> ---
> tools/testing/selftests/kcmp/kcmp_test.c | 3 +++
> 1 file changed, 3 insertions(+)
>
> --- linux-2.6.orig/tools/testing/selftests/kcmp/kcmp_test.c 2012-11-23 22:37:04.789058192 +0800
> +++ linux-2.6/tools/testing/selftests/kcmp/kcmp_test.c 2012-11-23 22:38:43.195191747 +0800
> @@ -17,6 +17,9 @@
> #include <sys/stat.h>
> #include <sys/wait.h>
>
> +#ifndef __NR_kcmp
> +#define __NR_kcmp 272
> +#endif

Is the syscall number really going to be the same across all architectures?

> static long sys_kcmp(int pid1, int pid2, int type, int fd1, int fd2)
> {
> return syscall(__NR_kcmp, pid1, pid2, type, fd1, fd2);
>
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