| /** |
| * Copyright (c) 2010-2012 Broadcom. All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions, and the following disclaimer, |
| * without modification. |
| * 2. 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. |
| * 3. The names of the above-listed copyright holders may not be used |
| * to endorse or promote products derived from this software without |
| * specific prior written permission. |
| * |
| * ALTERNATIVELY, this software may be distributed under the terms of the |
| * GNU General Public License ("GPL") version 2, as published by the Free |
| * Software Foundation. |
| * |
| * 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. |
| */ |
| |
| #ifndef VCHI_CFG_INTERNAL_H_ |
| #define VCHI_CFG_INTERNAL_H_ |
| |
| /**************************************************************************************** |
| * Control optimisation attempts. |
| ***************************************************************************************/ |
| |
| // Don't use lots of short-term locks - use great long ones, reducing the overall locks-per-second |
| #define VCHI_COARSE_LOCKING |
| |
| // Avoid lock then unlock on exit from blocking queue operations (msg tx, bulk rx/tx) |
| // (only relevant if VCHI_COARSE_LOCKING) |
| #define VCHI_ELIDE_BLOCK_EXIT_LOCK |
| |
| // Avoid lock on non-blocking peek |
| // (only relevant if VCHI_COARSE_LOCKING) |
| #define VCHI_AVOID_PEEK_LOCK |
| |
| // Use one slot-handler thread per connection, rather than 1 thread dealing with all connections in rotation. |
| #define VCHI_MULTIPLE_HANDLER_THREADS |
| |
| // Put free descriptors onto the head of the free queue, rather than the tail, so that we don't thrash |
| // our way through the pool of descriptors. |
| #define VCHI_PUSH_FREE_DESCRIPTORS_ONTO_HEAD |
| |
| // Don't issue a MSG_AVAILABLE callback for every single message. Possibly only safe if VCHI_COARSE_LOCKING. |
| #define VCHI_FEWER_MSG_AVAILABLE_CALLBACKS |
| |
| // Don't use message descriptors for TX messages that don't need them |
| #define VCHI_MINIMISE_TX_MSG_DESCRIPTORS |
| |
| // Nano-locks for multiqueue |
| //#define VCHI_MQUEUE_NANOLOCKS |
| |
| // Lock-free(er) dequeuing |
| //#define VCHI_RX_NANOLOCKS |
| |
| #endif /*VCHI_CFG_INTERNAL_H_*/ |
