headers: smp_lock.h redux
* Remove smp_lock.h from files which don't need it (including some headers!)
* Add smp_lock.h to files which do need it
* Make smp_lock.h include conditional in hardirq.h
It's needed only for one kernel_locked() usage which is under CONFIG_PREEMPT
This will make hardirq.h inclusion cheaper for every PREEMPT=n config
(which includes allmodconfig/allyesconfig, BTW)
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/include/linux/hardirq.h b/include/linux/hardirq.h
index 4525747..8246c69 100644
--- a/include/linux/hardirq.h
+++ b/include/linux/hardirq.h
@@ -2,7 +2,9 @@
#define LINUX_HARDIRQ_H
#include <linux/preempt.h>
+#ifdef CONFIG_PREEMPT
#include <linux/smp_lock.h>
+#endif
#include <linux/lockdep.h>
#include <linux/ftrace_irq.h>
#include <asm/hardirq.h>