Change most LitmusRT spinlock_t in raw_spinlock_t

Adapt to new schema for spinlock:
(tglx 20091217)
spinlock - the weakest one, which might sleep in RT
raw_spinlock - spinlock which always spins even on RT
arch_spinlock - the hardware level architecture dependent implementation

----

Most probably, all the spinlocks changed by this commit will be true
spinning lock (raw_spinlock) in PreemptRT (so hopefully we'll need few
changes when porting Litmmus to PreemptRT).

There are a couple of spinlock that the kernel still defines as
spinlock_t (therefore no changes reported in this commit) that might cause
us troubles:

- wait_queue_t lock is defined as spinlock_t; it is used in:
  * fmlp.c -- sem->wait.lock
  * sync.c -- ts_release.wait.lock

- rwlock_t used in fifo implementation in sched_trace.c
  * this need probably to be changed to something always spinning in RT
    at the expense of increased locking time.

----

This commit also fixes warnings and errors due to the need to include
slab.h when using kmalloc() and friends.

----

This commit does not compile.

1 files changed, 1 insertions, 0 deletions

diff --git a/litmus/ftdev.c b/litmus/ftdev.c
index 8b2d74d816a2..51dafaebf8a6 100644
--- a/litmus/ftdev.c
+++ b/litmus/ftdev.c
@@ -1,5 +1,6 @@
 #include <linux/sched.h>
 #include <linux/fs.h>
+#include <linux/slab.h>
 #include <linux/cdev.h>
 #include <asm/uaccess.h>
 #include <linux/module.h>