mpmc_ptr_ring: include all necessary headers

mpmc_ptr_ring.h should include the headers that it needs explicitly.
This commit adds the following:

- <asm/barrier.h>: smp_rmb, smp_wmb, smp_mb__before_atomic
- <linux/atomic.h>: atomic_t, atomic_read, atomic_set, atomic_cmpxchg, atomic_inc
- <linux/cache.h>: ____cacheline_aligned_in_smp
- <linux/compiler.h>: READ_ONCE, WRITE_ONCE
- <linux/errno.h>: ENOMEM
- <linux/log2.h>: is_power_of_2
- <linux/processor.h>: cpu_relax
- <linux/slab.h>: kcalloc, kfree
- <linux/stddef.h>: NULL

I'm not sure if all of them are really needed because I wasn't about to
provoke a compile error due to the missing includes.

Signed-off-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net>

1 files changed, 11 insertions, 0 deletions

diff --git a/src/mpmc_ptr_ring.h b/src/mpmc_ptr_ring.h
index cbcfca4..258a16f 100644
--- a/src/mpmc_ptr_ring.h
+++ b/src/mpmc_ptr_ring.h
@@ -38,6 +38,17 @@
  * [1]: https://github.com/concurrencykit/ck/blob/master/include/ck_ring.h
  */
 
+#include <asm/barrier.h>
+#include <linux/atomic.h>
+#include <linux/cache.h>
+#include <linux/compiler.h>
+#include <linux/errno.h>
+#include <linux/log2.h>
+#include <linux/processor.h>
+#include <linux/slab.h>
+#include <linux/stddef.h>
+
+
 struct mpmc_ptr_ring {
 	/* Read-mostly data */
 	void **queue;