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authorBenjamin Herrenschmidt <benh@kernel.crashing.org>2008-10-15 11:31:54 +1100
committerBenjamin Herrenschmidt <benh@kernel.crashing.org>2008-10-15 11:31:54 +1100
commit6dc6472581f693b5fc95aebedf67b4960fb85cf0 (patch)
tree06a5a9a08519950575505273eabced331ed51405 /arch/mips/include/asm/timex.h
parentee673eaa72d8d185012b1027a05e25aba18c267f (diff)
parent8acd3a60bcca17c6d89c73cee3ad6057eb83ba1e (diff)
Merge commit 'origin'
Manual fixup of conflicts on: arch/powerpc/include/asm/dcr-regs.h drivers/net/ibm_newemac/core.h
Diffstat (limited to 'arch/mips/include/asm/timex.h')
-rw-r--r--arch/mips/include/asm/timex.h43
1 files changed, 43 insertions, 0 deletions
diff --git a/arch/mips/include/asm/timex.h b/arch/mips/include/asm/timex.h
new file mode 100644
index 00000000000..6529704aa73
--- /dev/null
+++ b/arch/mips/include/asm/timex.h
@@ -0,0 +1,43 @@
+/*
+ * 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
+
+#ifdef __KERNEL__
+
+#include <asm/mipsregs.h>
+
+/*
+ * This is the clock rate of the i8253 PIT. A MIPS system may not have
+ * a PIT by the symbol is used all over the kernel including some APIs.
+ * So keeping it defined to the number for the PIT is the only sane thing
+ * for now.
+ */
+#define CLOCK_TICK_RATE 1193182
+
+/*
+ * 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 0;
+}
+
+#endif /* __KERNEL__ */
+
+#endif /* _ASM_TIMEX_H */