powerpc: Implement smp_release_cpus() in C not asm

There's no reason for smp_release_cpus() to be asm, and most people can make
more sense of C code. Add an extern declaration to smp.h and remove the custom
one in machine_kexec.c

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>

1 files changed, 1 insertions, 0 deletions

diff --git a/include/asm-ppc64/smp.h b/include/asm-ppc64/smp.h
index 46c04046952d..ba0f5c8bbb22 100644
--- a/include/asm-ppc64/smp.h
+++ b/include/asm-ppc64/smp.h
@@ -79,6 +79,7 @@ extern int smt_enabled_at_boot;
 extern int smp_mpic_probe(void);
 extern void smp_mpic_setup_cpu(int cpu);
 extern void smp_generic_kick_cpu(int nr);
+extern void smp_release_cpus(void);
 
 extern void smp_generic_give_timebase(void);
 extern void smp_generic_take_timebase(void);