I'm using 2.6.24.2 with -rt1 applied (applies cleanly with some offsets) on x86.
I've *not* configured PROVE_LOCKING (too expensive). However, I selected all the latency tracings, timings and histograms, among them CRITICAL_IRQSOFF_TIMING. This implicitly configures TRACE_IRQFLAGS. However, TRACE_IRQFLAGS depends on PROVE_LOCKING, which is off (and not implicitly selected). With TRACE_IRQFLAGS on and PROVE_LOCKING off, compilation of kernel/lockdep.c fails miserably: CC kernel/lockdep.o kernel/lockdep.c: In function 'check_usage_forwards': kernel/lockdep.c:1740: error: 'find_usage_bit' undeclared (first use in this function) kernel/lockdep.c:1740: error: (Each undeclared identifier is reported only once kernel/lockdep.c:1740: error: for each function it appears in.) kernel/lockdep.c:1742: error: implicit declaration of function 'find_usage_forwards' kernel/lockdep.c:1746: error: 'forwards_match' undeclared (first use in this function) kernel/lockdep.c: In function 'check_usage_backwards': kernel/lockdep.c:1759: error: 'find_usage_bit' undeclared (first use in this function) kernel/lockdep.c:1761: error: implicit declaration of function 'find_usage_backwards' kernel/lockdep.c:1765: error: 'backwards_match' undeclared (first use in this function) make[1]: *** [kernel/lockdep.o] Error 1 Looking at the source quickly, it seems that the #ifdefs do not cover that combination correctly, but I can't figure out how to fix that (the ifdef nesting in that file seems to have grown over time...). By the way: With all the tracing on, make also tries to compile scripts/trace-it.c (with HOSTCC), which also fails if the kernel is cross-compiled in a non-linux development environment (Interix in my case - don't ask me, I didn't vote for it...). Many thanks in advance for any help! Greetings -- Klaus Kusche, DI. Dr. Software Development - Control KEBA AG Gewerbepark Urfahr, A-4041 Linz, Austria www.keba.com Firmenbuchgericht Linz FN 184376 t mailto:[EMAIL PROTECTED] Phone: +43 732 7090-23120 Fax: +43 732 7090-63401 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
