These changes are the raw update to linux-4.4.6-rt14. Kernel sources

are taken from kernel.org, and rt patch from the rt wiki download page.

During the rebasing, the following patch collided:

Force tick interrupt and get rid of softirq magic(I70131fb85).

Collisions have been removed because its logic was found on the
source already.

Change-Id: I7f57a4081d9deaa0d9ccfc41a6c8daccdee3b769
Signed-off-by: José Pekkarinen <jose.pekkarinen@nokia.com>

1 files changed, 0 insertions, 260 deletions

diff --git a/kernel/drivers/infiniband/hw/amso1100/c2_vq.c b/kernel/drivers/infiniband/hw/amso1100/c2_vq.c
deleted file mode 100644
index 2ec716fb2..000000000
--- a/kernel/drivers/infiniband/hw/amso1100/c2_vq.c
+++ /dev/null
@@ -1,260 +0,0 @@
-/*
- * Copyright (c) 2005 Ammasso, Inc. All rights reserved.
- * Copyright (c) 2005 Open Grid Computing, Inc. All rights reserved.
- *
- * This software is available to you under a choice of one of two
- * licenses.  You may choose to be licensed under the terms of the GNU
- * General Public License (GPL) Version 2, available from the file
- * COPYING in the main directory of this source tree, or the
- * OpenIB.org BSD license below:
- *
- *     Redistribution and use in source and binary forms, with or
- *     without modification, are permitted provided that the following
- *     conditions are met:
- *
- *      - Redistributions of source code must retain the above
- *        copyright notice, this list of conditions and the following
- *        disclaimer.
- *
- *      - Redistributions in binary form must reproduce the above
- *        copyright notice, this list of conditions and the following
- *        disclaimer in the documentation and/or other materials
- *        provided with the distribution.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
- * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
- * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
- * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
- * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
- * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
- * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
- */
-#include <linux/slab.h>
-#include <linux/spinlock.h>
-
-#include "c2_vq.h"
-#include "c2_provider.h"
-
-/*
- * Verbs Request Objects:
- *
- * VQ Request Objects are allocated by the kernel verbs handlers.
- * They contain a wait object, a refcnt, an atomic bool indicating that the
- * adapter has replied, and a copy of the verb reply work request.
- * A pointer to the VQ Request Object is passed down in the context
- * field of the work request message, and reflected back by the adapter
- * in the verbs reply message.  The function handle_vq() in the interrupt
- * path will use this pointer to:
- * 	1) append a copy of the verbs reply message
- * 	2) mark that the reply is ready
- * 	3) wake up the kernel verbs handler blocked awaiting the reply.
- *
- *
- * The kernel verbs handlers do a "get" to put a 2nd reference on the
- * VQ Request object.  If the kernel verbs handler exits before the adapter
- * can respond, this extra reference will keep the VQ Request object around
- * until the adapter's reply can be processed.  The reason we need this is
- * because a pointer to this object is stuffed into the context field of
- * the verbs work request message, and reflected back in the reply message.
- * It is used in the interrupt handler (handle_vq()) to wake up the appropriate
- * kernel verb handler that is blocked awaiting the verb reply.
- * So handle_vq() will do a "put" on the object when it's done accessing it.
- * NOTE:  If we guarantee that the kernel verb handler will never bail before
- *        getting the reply, then we don't need these refcnts.
- *
- *
- * VQ Request objects are freed by the kernel verbs handlers only
- * after the verb has been processed, or when the adapter fails and
- * does not reply.
- *
- *
- * Verbs Reply Buffers:
- *
- * VQ Reply bufs are local host memory copies of a
- * outstanding Verb Request reply
- * message.  The are always allocated by the kernel verbs handlers, and _may_ be
- * freed by either the kernel verbs handler -or- the interrupt handler.  The
- * kernel verbs handler _must_ free the repbuf, then free the vq request object
- * in that order.
- */
-
-int vq_init(struct c2_dev *c2dev)
-{
-	sprintf(c2dev->vq_cache_name, "c2-vq:dev%c",
-		(char) ('0' + c2dev->devnum));
-	c2dev->host_msg_cache =
-	    kmem_cache_create(c2dev->vq_cache_name, c2dev->rep_vq.msg_size, 0,
-			      SLAB_HWCACHE_ALIGN, NULL);
-	if (c2dev->host_msg_cache == NULL) {
-		return -ENOMEM;
-	}
-	return 0;
-}
-
-void vq_term(struct c2_dev *c2dev)
-{
-	kmem_cache_destroy(c2dev->host_msg_cache);
-}
-
-/* vq_req_alloc - allocate a VQ Request Object and initialize it.
- * The refcnt is set to 1.
- */
-struct c2_vq_req *vq_req_alloc(struct c2_dev *c2dev)
-{
-	struct c2_vq_req *r;
-
-	r = kmalloc(sizeof(struct c2_vq_req), GFP_KERNEL);
-	if (r) {
-		init_waitqueue_head(&r->wait_object);
-		r->reply_msg = 0;
-		r->event = 0;
-		r->cm_id = NULL;
-		r->qp = NULL;
-		atomic_set(&r->refcnt, 1);
-		atomic_set(&r->reply_ready, 0);
-	}
-	return r;
-}
-
-
-/* vq_req_free - free the VQ Request Object.  It is assumed the verbs handler
- * has already free the VQ Reply Buffer if it existed.
- */
-void vq_req_free(struct c2_dev *c2dev, struct c2_vq_req *r)
-{
-	r->reply_msg = 0;
-	if (atomic_dec_and_test(&r->refcnt)) {
-		kfree(r);
-	}
-}
-
-/* vq_req_get - reference a VQ Request Object.  Done
- * only in the kernel verbs handlers.
- */
-void vq_req_get(struct c2_dev *c2dev, struct c2_vq_req *r)
-{
-	atomic_inc(&r->refcnt);
-}
-
-
-/* vq_req_put - dereference and potentially free a VQ Request Object.
- *
- * This is only called by handle_vq() on the
- * interrupt when it is done processing
- * a verb reply message.  If the associated
- * kernel verbs handler has already bailed,
- * then this put will actually free the VQ
- * Request object _and_ the VQ Reply Buffer
- * if it exists.
- */
-void vq_req_put(struct c2_dev *c2dev, struct c2_vq_req *r)
-{
-	if (atomic_dec_and_test(&r->refcnt)) {
-		if (r->reply_msg != 0)
-			vq_repbuf_free(c2dev,
-				       (void *) (unsigned long) r->reply_msg);
-		kfree(r);
-	}
-}
-
-
-/*
- * vq_repbuf_alloc - allocate a VQ Reply Buffer.
- */
-void *vq_repbuf_alloc(struct c2_dev *c2dev)
-{
-	return kmem_cache_alloc(c2dev->host_msg_cache, GFP_ATOMIC);
-}
-
-/*
- * vq_send_wr - post a verbs request message to the Verbs Request Queue.
- * If a message is not available in the MQ, then block until one is available.
- * NOTE: handle_mq() on the interrupt context will wake up threads blocked here.
- * When the adapter drains the Verbs Request Queue,
- * it inserts MQ index 0 in to the
- * adapter->host activity fifo and interrupts the host.
- */
-int vq_send_wr(struct c2_dev *c2dev, union c2wr *wr)
-{
-	void *msg;
-	wait_queue_t __wait;
-
-	/*
-	 * grab adapter vq lock
-	 */
-	spin_lock(&c2dev->vqlock);
-
-	/*
-	 * allocate msg
-	 */
-	msg = c2_mq_alloc(&c2dev->req_vq);
-
-	/*
-	 * If we cannot get a msg, then we'll wait
-	 * When a messages are available, the int handler will wake_up()
-	 * any waiters.
-	 */
-	while (msg == NULL) {
-		pr_debug("%s:%d no available msg in VQ, waiting...\n",
-		       __func__, __LINE__);
-		init_waitqueue_entry(&__wait, current);
-		add_wait_queue(&c2dev->req_vq_wo, &__wait);
-		spin_unlock(&c2dev->vqlock);
-		for (;;) {
-			set_current_state(TASK_INTERRUPTIBLE);
-			if (!c2_mq_full(&c2dev->req_vq)) {
-				break;
-			}
-			if (!signal_pending(current)) {
-				schedule_timeout(1 * HZ);	/* 1 second... */
-				continue;
-			}
-			set_current_state(TASK_RUNNING);
-			remove_wait_queue(&c2dev->req_vq_wo, &__wait);
-			return -EINTR;
-		}
-		set_current_state(TASK_RUNNING);
-		remove_wait_queue(&c2dev->req_vq_wo, &__wait);
-		spin_lock(&c2dev->vqlock);
-		msg = c2_mq_alloc(&c2dev->req_vq);
-	}
-
-	/*
-	 * copy wr into adapter msg
-	 */
-	memcpy(msg, wr, c2dev->req_vq.msg_size);
-
-	/*
-	 * post msg
-	 */
-	c2_mq_produce(&c2dev->req_vq);
-
-	/*
-	 * release adapter vq lock
-	 */
-	spin_unlock(&c2dev->vqlock);
-	return 0;
-}
-
-
-/*
- * vq_wait_for_reply - block until the adapter posts a Verb Reply Message.
- */
-int vq_wait_for_reply(struct c2_dev *c2dev, struct c2_vq_req *req)
-{
-	if (!wait_event_timeout(req->wait_object,
-				atomic_read(&req->reply_ready),
-				60*HZ))
-		return -ETIMEDOUT;
-
-	return 0;
-}
-
-/*
- * vq_repbuf_free - Free a Verbs Reply Buffer.
- */
-void vq_repbuf_free(struct c2_dev *c2dev, void *reply)
-{
-	kmem_cache_free(c2dev->host_msg_cache, reply);
-}