Hi, using 2.6.24.3-rt3 for ARM gives me this additional error: [...] CC kernel/softirq.o CC kernel/resource.o CC kernel/sysctl.o kernel/sysctl.c:356: error: 'prof_pid' undeclared here (not in a function) make[2]: *** [kernel/sysctl.o] Error 1 make[1]: *** [kernel] Error 2 Would the patch below a correct fix? Index: kernel/sysctl.c =================================================================== --- kernel/sysctl.c.orig +++ kernel/sysctl.c @@ -56,6 +56,8 @@ #include <asm/stacktrace.h> #endif +#include "linux/profile.h" + static int deprecated_sysctl_warning(struct __sysctl_args *args); #if defined(CONFIG_SYSCTL) Juergen -- Dipl.-Ing. Juergen Beisert | http://www.pengutronix.de Pengutronix - Linux Solutions for Science and Industry Handelsregister: Amtsgericht Hildesheim, HRA 2686 Vertretung Sued/Muenchen, Germany Phone: +49-8766-939 228 | Fax: +49-5121-206917-9 -- To unsubscribe from this list: send the line "unsubscribe linux-rt-users" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html