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Diffstat (limited to 'cpu/full_cpu/smt.hh')
-rw-r--r-- | cpu/full_cpu/smt.hh | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/cpu/full_cpu/smt.hh b/cpu/full_cpu/smt.hh new file mode 100644 index 000000000..f9c1e4614 --- /dev/null +++ b/cpu/full_cpu/smt.hh @@ -0,0 +1,64 @@ +/* + * Copyright (c) 2003 The Regents of The University of Michigan + * 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 of the copyright holders 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. + */ + +/** + * @file + * Defines SMT_MAX_CPUS and SMT_MAX_THREADS. + */ + +#ifndef __SMT_HH__ +#define __SMT_HH__ + +#ifndef SMT_MAX_CPUS +/** The maximum number of cpus in any one system. */ +#define SMT_MAX_CPUS 4 +#endif + +#ifndef SMT_MAX_THREADS +/** The number of TPUs in any processor. */ +#define SMT_MAX_THREADS 4 +#endif + +/** + * The maximum number of active threads across all cpus. Used to + * initialize per-thread statistics in the cache. + * + * NB: Be careful to only use it once all the CPUs that you care about + * have been initialized + */ +extern int maxThreadsPerCPU; + +/** + * Changes the status and priority of the thread with the given number. + * @param thread_number The thread to change. + * @param activate The new active status. + * @param priority The new priority. + */ +void change_thread_state(int thread_number, int activate, int priority); + +#endif // __SMT_HH__ |