powerpc/smp: Add a smp_ops->bringup_up() done callback

This allows us to stop abusing smp_ops->setup_cpu() for cleanup
tasks that have to take place after the initial boot time CPU
bringup.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

diff --git a/arch/powerpc/include/asm/machdep.h b/arch/powerpc/include/asm/machdep.h
index 578d330..e4f0191 100644 (file)
--- a/arch/powerpc/include/asm/machdep.h
+++ b/arch/powerpc/include/asm/machdep.h
@@ -35,6 +35,7 @@ struct smp_ops_t {
        int   (*probe)(void);
        void  (*kick_cpu)(int nr);
        void  (*setup_cpu)(int nr);
+       void  (*bringup_done)(void);
        void  (*take_timebase)(void);
        void  (*give_timebase)(void);
        int   (*cpu_disable)(void);

diff --git a/arch/powerpc/kernel/smp.c b/arch/powerpc/kernel/smp.c
index f6cc5c1..df37397 100644 (file)
--- a/arch/powerpc/kernel/smp.c
+++ b/arch/powerpc/kernel/smp.c
@@ -553,7 +553,11 @@ void __init smp_cpus_done(unsigned int max_cpus)
 
        free_cpumask_var(old_mask);
 
+       if (smp_ops && smp_ops->bringup_done)
+               smp_ops->bringup_done();
+
        dump_numa_cpu_topology();
+
 }
 
 int arch_sd_sibling_asym_packing(void)