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197165d449
Add a new powerpc-specific trace clock using the timebase register, similar to x86-tsc. This gives us - a fast, monotonic, hardware clock source for trace entries, and - a clock that can be used to correlate events across cpus as well as across hypervisor and guests. Signed-off-by: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com> Acked-by: Steven Rostedt <rostedt@goodmis.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
19 lines
517 B
C
19 lines
517 B
C
/*
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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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* Copyright (C) 2015 Naveen N. Rao, IBM Corporation
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*/
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#ifndef _ASM_PPC_TRACE_CLOCK_H
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#define _ASM_PPC_TRACE_CLOCK_H
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#include <linux/compiler.h>
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#include <linux/types.h>
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extern u64 notrace trace_clock_ppc_tb(void);
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#define ARCH_TRACE_CLOCKS { trace_clock_ppc_tb, "ppc-tb", 0 },
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#endif /* _ASM_PPC_TRACE_CLOCK_H */
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