Thomas 'Dent' Mirlacher wrote:
: can someone please explain to me who calibrate_delay works in
: arch/ppc64/kernel/setup.c?
:
: as i can see it calibrate.c is a global function defined in init/main.h.
: arch/ppc64/kernel/setup.c sets a pointer to the address of this function
: extern void (*calibrate_delay)(void); and assigns its own routine to that
: pointer. - hmm, every time i tried to do similar things (by mistake :),
: the program segfaulted on me.
:
: - can someone please explain how this should work?
What's you're not seeing is the additional patch to the "offical"
sources which is required to get a working ppc64 kernel. It's not
in the offical sources due to it touching non-arch specific files.
I've included the relevent part of the patch you're not seeing below.
You can find the full patch at www.penguinppc64.org.
Peter
diff -uNr --exclude=CVS /kernels/64/linux-2.4.18-rc3/init/main.c linuxppc64_2_4/init/main.c
--- /kernels/64/linux-2.4.18-rc3/init/main.c Thu Feb 21 17:04:28 2002
+++ linuxppc64_2_4/init/main.c Thu Feb 21 21:02:01 2002
@@ -129,7 +129,6 @@
char *execute_command;
char root_device_name[64];
-
static char * argv_init[MAX_INIT_ARGS+2] = { "init", NULL, };
static char * envp_init[MAX_INIT_ENVS+2] = { "HOME=/", "TERM=linux", NULL, };
@@ -336,7 +335,7 @@
better than 1% */
#define LPS_PREC 8
-void __init calibrate_delay(void)
+void __init do_calibrate_delay(void)
{
unsigned long ticks, loopbit;
int lps_precision = LPS_PREC;
@@ -376,6 +375,8 @@
loops_per_jiffy/(500000/HZ),
(loops_per_jiffy/(5000/HZ)) % 100);
}
+
+void (*calibrate_delay)(void) = do_calibrate_delay;
static int __init readonly(char *str)
{
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
This archive was generated by hypermail 2b29 : Mon Apr 15 2002 - 22:00:13 EST