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Diffstat (limited to 'include/my_cpu.h')
| -rw-r--r-- | include/my_cpu.h | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/include/my_cpu.h b/include/my_cpu.h new file mode 100644 index 00000000000..026b92c1b74 --- /dev/null +++ b/include/my_cpu.h @@ -0,0 +1,44 @@ +/* Copyright (c) 2013, MariaDB foundation Ab and SkySQL + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; version 2 of the License. + + 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 St, Fifth Floor, Boston, MA 02111-1307 USA +*/ + +/* instructions for specific cpu's */ + +/* + Macros for adjusting thread priority (hardware multi-threading) + The defines are the same ones used by the linux kernel +*/ + +#if defined(__powerpc__) +/* Very low priority */ +#define HMT_very_low() asm volatile("or 31,31,31") +/* Low priority */ +#define HMT_low() asm volatile("or 1,1,1") +/* Medium low priority */ +#define HMT_medium_low() asm volatile("or 6,6,6") +/* Medium priority */ +#define HMT_medium() asm volatile("or 2,2,2") +/* Medium high priority */ +#define HMT_medium_high() asm volatile("or 5,5,5") +/* High priority */ +#define HMT_high() asm volatile("or 3,3,3") +#else +#define HMT_very_low() +#define HMT_low() +#define HMT_medium_low() +#define HMT_medium() +#define HMT_medium_high() +#define HMT_high() +#endif |