[PATCH] ppc64: Fix UP kernel build
CONFIG_KEXEC breaks UP builds because of a misspelled smp_release_cpus().
Also, the function isn't defined unless built with CONFIG_SMP but it is
needed if we are to go from a UP to SMP kernel. Enable it and document it.
Thanks to Steven Winiecki for reporting this and to Milton for remembering
how it's supposed to work and why.
Signed-off-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
diff --git a/arch/ppc64/kernel/machine_kexec.c b/arch/ppc64/kernel/machine_kexec.c
index fdb2fc6..5c40bb6 100644
--- a/arch/ppc64/kernel/machine_kexec.c
+++ b/arch/ppc64/kernel/machine_kexec.c
@@ -243,13 +243,17 @@
static void kexec_prepare_cpus(void)
{
+ extern void smp_release_cpus(void);
/*
* move the secondarys to us so that we can copy
* the new kernel 0-0x100 safely
*
* do this if kexec in setup.c ?
+ *
+ * We need to release the cpus if we are ever going from an
+ * UP to an SMP kernel.
*/
- smp_relase_cpus();
+ smp_release_cpus();
if (ppc_md.cpu_irq_down)
ppc_md.cpu_irq_down();
local_irq_disable();