kernel-ark/include/asm-ia64/sn/clksupport.h
Linus Torvalds 1da177e4c3 Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!
2005-04-16 15:20:36 -07:00

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844 B
C

/*
* 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) 2000-2004 Silicon Graphics, Inc. All rights reserved.
*/
/*
* This file contains definitions for accessing a platform supported high resolution
* clock. The clock is monitonically increasing and can be accessed from any node
* in the system. The clock is synchronized across nodes - all nodes see the
* same value.
*
* RTC_COUNTER_ADDR - contains the address of the counter
*
*/
#ifndef _ASM_IA64_SN_CLKSUPPORT_H
#define _ASM_IA64_SN_CLKSUPPORT_H
extern unsigned long sn_rtc_cycles_per_second;
#define RTC_COUNTER_ADDR ((long *)LOCAL_MMR_ADDR(SH_RTC))
#define rtc_time() (*RTC_COUNTER_ADDR)
#endif /* _ASM_IA64_SN_CLKSUPPORT_H */