56942fec06
The current timer-based delay loop relies on the architected timer to initiate the switch away from the polling-based implementation. This is unfortunate for platforms without the architected timers but with a suitable delay source (that is, constant frequency, always powered-up and ticking as long as the CPUs are online). This patch introduces a registration mechanism for the delay timer (which provides an unconditional read_current_timer implementation) and updates the architected timer code to use the new interface. Reviewed-by: Stephen Boyd <sboyd@codeaurora.org> Signed-off-by: Jonathan Austin <jonathan.austin@arm.com> Signed-off-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
20 lines
508 B
C
20 lines
508 B
C
/*
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* arch/arm/include/asm/timex.h
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*
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* Copyright (C) 1997,1998 Russell King
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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* Architecture Specific TIME specifications
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*/
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#ifndef _ASMARM_TIMEX_H
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#define _ASMARM_TIMEX_H
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#include <mach/timex.h>
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typedef unsigned long cycles_t;
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#define get_cycles() ({ cycles_t c; read_current_timer(&c) ? 0 : c; })
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#endif
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