[PATCH] [POWERPC] Add machine initcall macros

[Grant Likely]

From: Grant Likely <grant.likely at secretlab.ca>

The machine initcall macros allow initcalls to be registered which
test machine_is() before executing the initcall.

Signed-off-by: Grant Likely <grant.likely at secretlab.ca>
---

Ben, is this the sort of thing you're considering?

g.

 include/asm-powerpc/machdep.h |   19 +++++++++++++++++++
 1 files changed, 19 insertions(+), 0 deletions(-)

diff --git a/include/asm-powerpc/machdep.h b/include/asm-powerpc/machdep.h
index 6968f43..f24af06 100644
--- a/include/asm-powerpc/machdep.h
+++ b/include/asm-powerpc/machdep.h
@@ -326,5 +326,24 @@ static inline void log_error(char *buf, unsigned int err_type, int fatal)
 		ppc_md.log_error(buf, err_type, fatal);
 }
 
+#define __define_machine_initcall(mach,level,fn,id) \
+	static int __init __machine_initcall_##mach##_##fn(void) { \
+		if (machine_is(mach)) return fn(); \
+		return 0; \
+	} \
+	__define_initcall(level,__machine_initcall_##mach##_##fn,id);
+
+#define machine_arch_initcall(mach,fn)		__define_machine_initcall(mach,"3",fn,3)
+#define machine_arch_initcall_sync(mach,fn)	__define_machine_initcall(mach,"3s",fn,3s)
+#define machine_subsys_initcall(mach,fn)	__define_machine_initcall(mach,"4",fn,4)
+#define machine_subsys_initcall_sync(mach,fn)	__define_machine_initcall(mach,"4s",fn,4s)
+#define machine_fs_initcall(mach,fn)		__define_machine_initcall(mach,"5",fn,5)
+#define machine_fs_initcall_sync(mach,fn)	__define_machine_initcall(mach,"5s",fn,5s)
+#define machine_rootfs_initcall(mach,fn)	__define_machine_initcall(mach,"rootfs",fn,rootfs)
+#define machine_device_initcall(mach,fn)	__define_machine_initcall(mach,"6",fn,6)
+#define machine_device_initcall_sync(mach,fn)	__define_machine_initcall(mach,"6s",fn,6s)
+#define machine_late_initcall(mach,fn)		__define_machine_initcall(mach,"7",fn,7)
+#define machine_late_initcall_sync(mach,fn)	__define_machine_initcall(mach,"7s",fn,7s)
+
 #endif /* __KERNEL__ */
 #endif /* _ASM_POWERPC_MACHDEP_H */