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Diffstat (limited to 'include/asm-mips/timex.h')
| -rw-r--r-- | include/asm-mips/timex.h | 54 |
1 files changed, 0 insertions, 54 deletions
diff --git a/include/asm-mips/timex.h b/include/asm-mips/timex.h deleted file mode 100644 index 98aa737b34a..00000000000 --- a/include/asm-mips/timex.h +++ /dev/null @@ -1,54 +0,0 @@ -/* - * This file is subject to the terms and conditions of the GNU General Public - * License. See the file "COPYING" in the main directory of this archive - * for more details. - * - * Copyright (C) 1998, 1999, 2003 by Ralf Baechle - */ -#ifndef _ASM_TIMEX_H -#define _ASM_TIMEX_H - -#include <asm/mipsregs.h> - -/* - * This is the frequency of the timer used for Linux's timer interrupt. - * The value should be defined as accurate as possible or under certain - * circumstances Linux timekeeping might become inaccurate or fail. - * - * For many system the exact clockrate of the timer isn't known but due to - * the way this value is used we can get away with a wrong value as long - * as this value is: - * - * - a multiple of HZ - * - a divisor of the actual rate - * - * 500000 is a good such cheat value. - * - * The obscure number 1193182 is the same as used by the original i8254 - * time in legacy PC hardware; the chip unfortunately also found in a - * bunch of MIPS systems. The last remaining user of the i8254 for the - * timer interrupt is the RM200; it's a very standard system so there is - * no reason to make this a separate architecture. - */ - -#include <timex.h> - -/* - * Standard way to access the cycle counter. - * Currently only used on SMP for scheduling. - * - * Only the low 32 bits are available as a continuously counting entity. - * But this only means we'll force a reschedule every 8 seconds or so, - * which isn't an evil thing. - * - * We know that all SMP capable CPUs have cycle counters. - */ - -typedef unsigned int cycles_t; - -static inline cycles_t get_cycles (void) -{ - return read_c0_count(); -} - -#endif /* _ASM_TIMEX_H */ |
