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Viewing changes to arch/sparc/kernel/tick14.c

  • Committer: Bazaar Package Importer
  • Author(s): Paolo Pisati
  • Date: 2011-06-29 15:23:51 UTC
  • mfrom: (26.1.1 natty-proposed)
  • Revision ID: james.westby@ubuntu.com-20110629152351-xs96tm303d95rpbk
Tags: 3.0.0-1200.2
* Rebased against 3.0.0-6.7
* BSP from TI based on 3.0.0

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arch/sparc/kernel/tick14.c
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/* tick14.c
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 *
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 * Copyright (C) 1996 David Redman (djhr@tadpole.co.uk)
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 *
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 * This file handles the Sparc specific level14 ticker
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 * This is really useful for profiling OBP uses it for keyboard
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 * aborts and other stuff.
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 */
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#include <linux/kernel.h>
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extern unsigned long lvl14_save[5];
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static unsigned long *linux_lvl14 = NULL;
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static unsigned long obp_lvl14[4];
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/*
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 * Call with timer IRQ closed.
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 * First time we do it with disable_irq, later prom code uses spin_lock_irq().
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 */
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void install_linux_ticker(void)
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{
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        if (!linux_lvl14)
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                return;
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        linux_lvl14[0] =  lvl14_save[0];
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        linux_lvl14[1] =  lvl14_save[1];
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        linux_lvl14[2] =  lvl14_save[2];
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        linux_lvl14[3] =  lvl14_save[3];
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}
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void install_obp_ticker(void)
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{
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        if (!linux_lvl14)
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                return;
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        linux_lvl14[0] =  obp_lvl14[0];
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        linux_lvl14[1] =  obp_lvl14[1];
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        linux_lvl14[2] =  obp_lvl14[2];
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        linux_lvl14[3] =  obp_lvl14[3]; 
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}