Re: test6pre1 change for sysrq config-option

From: Juan J. Quintela (
Date: Thu Aug 03 2000 - 09:52:43 EST

>>>>> "arjan" == Arjan van de Ven <> writes:

arjan> Maybe you are right in theory. There are 3 things that make theory different
arjan> from practice right now:

arjan> 1) Serial sysrq is reported no to work for 2.4 kernels.
arjan> 2) You cannot compile a 2.4-test kernel without CONFIG_VT but with
arjan> CONFIG_MAGIC_SYSRQ right now; the dep_bool change is just making
arjan> this explicit.
arjan> 3) Even 2.2.16 doesn't seem to contain code for Serial sysrq

arjan> Please, fix the first two issues before removing the "dep_"....

        prumpf has wrote code in the serial console to make that work
        (I think that he had send the code to Tytso to be included in
        the next release of the serial code). I have a _functional_
        serial console with sysrq working now in the last 2.4.0

        To solve the problem 2, use the following patch, with it and
        the dep_bool change, CONFIG_MAGIC_SYSRQ + CONFIG_VT compiles
        (althought it didn't work), but with this two changes, the
        only other places that need changes are serial.c.

Later, Juan.

--- linux/kernel/sysctl.c Sun Jul 23 16:49:45 2000
+++ linux-prumpf/kernel/sysctl.c Sun Jul 23 19:38:40 2000
@@ -216,7 +216,7 @@
         {KERN_SEM, "sem", &sem_ctls, 4*sizeof (int),
          0644, NULL, &proc_dointvec},
+#if defined(CONFIG_VT) && defined(CONFIG_MAGIC_SYSRQ)
         {KERN_SYSRQ, "sysrq", &sysrq_enabled, sizeof (int),
          0644, NULL, &proc_dointvec},

In theory, practice and theory are the same, but in practice they 
are different -- Larry McVoy

- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to Please read the FAQ at

This archive was generated by hypermail 2b29 : Mon Aug 07 2000 - 21:00:11 EST