powerpc: Replace mem_init_done with slab_is_available()
We have a powerpc specific global called mem_init_done which is "set on
boot once kmalloc can be called".
But that's not *quite* true. We set it at the bottom of mem_init(), and
rely on the fact that mm_init() calls kmem_cache_init() immediately
after that, and nothing is running in parallel.
So replace it with the generic and 100% correct slab_is_available().
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
diff --git a/arch/powerpc/kernel/rtas.c b/arch/powerpc/kernel/rtas.c
index b9a7b89..7a488c1 100644
--- a/arch/powerpc/kernel/rtas.c
+++ b/arch/powerpc/kernel/rtas.c
@@ -401,7 +401,7 @@
buf = altbuf;
} else {
buf = rtas_err_buf;
- if (mem_init_done)
+ if (slab_is_available())
buf = kmalloc(RTAS_ERROR_LOG_MAX, GFP_ATOMIC);
}
if (buf)
@@ -461,7 +461,7 @@
if (buff_copy) {
log_error(buff_copy, ERR_TYPE_RTAS_LOG, 0);
- if (mem_init_done)
+ if (slab_is_available())
kfree(buff_copy);
}
return ret;