Merge branch 'perf/core' into perf/uprobes

Merge in latest upstream (and the latest perf development tree),
to prepare for tooling changes, and also to pick up v3.4 MM
changes that the uprobes code needs to take care of.

Signed-off-by: Ingo Molnar <mingo@kernel.org>

1 files changed, 157 insertions, 0 deletions

diff --git a/drivers/net/wireless/iwlwifi/iwl-notif-wait.c b/drivers/net/wireless/iwlwifi/iwl-notif-wait.c
new file mode 100644
index 000000000000..88dc4a0f96b4
--- /dev/null
+++ b/drivers/net/wireless/iwlwifi/iwl-notif-wait.c
@@ -0,0 +1,157 @@
+/******************************************************************************
+ *
+ * This file is provided under a dual BSD/GPLv2 license.  When using or
+ * redistributing this file, you may do so under either license.
+ *
+ * GPL LICENSE SUMMARY
+ *
+ * Copyright(c) 2007 - 2012 Intel Corporation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of version 2 of the GNU General Public License as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
+ * USA
+ *
+ * The full GNU General Public License is included in this distribution
+ * in the file called LICENSE.GPL.
+ *
+ * Contact Information:
+ *  Intel Linux Wireless <ilw@linux.intel.com>
+ * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
+ *
+ * BSD LICENSE
+ *
+ * Copyright(c) 2005 - 2012 Intel Corporation. All rights reserved.
+ * All rights reserved.
+ *
+ * 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.
+ *  * Neither the name Intel Corporation nor the names of its
+ *    contributors may be used to endorse or promote products derived
+ *    from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ *****************************************************************************/
+#include <linux/sched.h>
+
+#include "iwl-notif-wait.h"
+
+
+void iwl_notification_wait_init(struct iwl_notif_wait_data *notif_wait)
+{
+	spin_lock_init(&notif_wait->notif_wait_lock);
+	INIT_LIST_HEAD(&notif_wait->notif_waits);
+	init_waitqueue_head(&notif_wait->notif_waitq);
+}
+
+void iwl_notification_wait_notify(struct iwl_notif_wait_data *notif_wait,
+				  struct iwl_rx_packet *pkt)
+{
+	if (!list_empty(&notif_wait->notif_waits)) {
+		struct iwl_notification_wait *w;
+
+		spin_lock(&notif_wait->notif_wait_lock);
+		list_for_each_entry(w, &notif_wait->notif_waits, list) {
+			if (w->cmd != pkt->hdr.cmd)
+				continue;
+			w->triggered = true;
+			if (w->fn)
+				w->fn(notif_wait, pkt, w->fn_data);
+		}
+		spin_unlock(&notif_wait->notif_wait_lock);
+
+		wake_up_all(&notif_wait->notif_waitq);
+	}
+}
+
+void iwl_abort_notification_waits(struct iwl_notif_wait_data *notif_wait)
+{
+	unsigned long flags;
+	struct iwl_notification_wait *wait_entry;
+
+	spin_lock_irqsave(&notif_wait->notif_wait_lock, flags);
+	list_for_each_entry(wait_entry, &notif_wait->notif_waits, list)
+		wait_entry->aborted = true;
+	spin_unlock_irqrestore(&notif_wait->notif_wait_lock, flags);
+
+	wake_up_all(&notif_wait->notif_waitq);
+}
+
+
+void
+iwl_init_notification_wait(struct iwl_notif_wait_data *notif_wait,
+			   struct iwl_notification_wait *wait_entry,
+			   u8 cmd,
+			   void (*fn)(struct iwl_notif_wait_data *notif_wait,
+				      struct iwl_rx_packet *pkt, void *data),
+			   void *fn_data)
+{
+	wait_entry->fn = fn;
+	wait_entry->fn_data = fn_data;
+	wait_entry->cmd = cmd;
+	wait_entry->triggered = false;
+	wait_entry->aborted = false;
+
+	spin_lock_bh(&notif_wait->notif_wait_lock);
+	list_add(&wait_entry->list, &notif_wait->notif_waits);
+	spin_unlock_bh(&notif_wait->notif_wait_lock);
+}
+
+int iwl_wait_notification(struct iwl_notif_wait_data *notif_wait,
+			  struct iwl_notification_wait *wait_entry,
+			  unsigned long timeout)
+{
+	int ret;
+
+	ret = wait_event_timeout(notif_wait->notif_waitq,
+				 wait_entry->triggered || wait_entry->aborted,
+				 timeout);
+
+	spin_lock_bh(&notif_wait->notif_wait_lock);
+	list_del(&wait_entry->list);
+	spin_unlock_bh(&notif_wait->notif_wait_lock);
+
+	if (wait_entry->aborted)
+		return -EIO;
+
+	/* return value is always >= 0 */
+	if (ret <= 0)
+		return -ETIMEDOUT;
+	return 0;
+}
+
+void iwl_remove_notification(struct iwl_notif_wait_data *notif_wait,
+			     struct iwl_notification_wait *wait_entry)
+{
+	spin_lock_bh(&notif_wait->notif_wait_lock);
+	list_del(&wait_entry->list);
+	spin_unlock_bh(&notif_wait->notif_wait_lock);
+}