7ada189f5c
The perf events subsystem allows counting of both hardware and software events. This patch implements the bare minimum for software performance events. Cc: Peter Zijlstra <peterz@infradead.org> Cc: Ingo Molnar <mingo@elte.hu> Signed-off-by: Jamie Iles <jamie.iles@picochip.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
31 lines
885 B
C
31 lines
885 B
C
/*
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* linux/arch/arm/include/asm/perf_event.h
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*
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* Copyright (C) 2009 picoChip Designs Ltd, Jamie Iles
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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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*/
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#ifndef __ARM_PERF_EVENT_H__
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#define __ARM_PERF_EVENT_H__
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/*
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* NOP: on *most* (read: all supported) ARM platforms, the performance
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* counter interrupts are regular interrupts and not an NMI. This
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* means that when we receive the interrupt we can call
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* perf_event_do_pending() that handles all of the work with
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* interrupts enabled.
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*/
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static inline void
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set_perf_event_pending(void)
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{
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}
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/* ARM performance counters start from 1 (in the cp15 accesses) so use the
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* same indexes here for consistency. */
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#define PERF_EVENT_INDEX_OFFSET 1
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#endif /* __ARM_PERF_EVENT_H__ */
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