Blame src/perfctr-2.7.x/linux/drivers/perfctr/cpumask.h
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/* $Id: cpumask.h,v 1.11 2004/07/12 22:44:14 mikpe Exp $
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* Performance-monitoring counters driver.
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* Partial simulation of cpumask_t on non-cpumask_t kernels.
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* Extension to allow inspecting a cpumask_t as array of ulong.
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* Appropriate definition of perfctr_cpus_forbidden_mask.
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*
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* Copyright (C) 2003-2004 Mikael Pettersson
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*/
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#ifdef CPU_ARRAY_SIZE
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#define PERFCTR_CPUMASK_NRLONGS CPU_ARRAY_SIZE
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#else
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#define PERFCTR_CPUMASK_NRLONGS 1
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#endif
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/* CPUs in `perfctr_cpus_forbidden_mask' must not use the
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performance-monitoring counters. TSC use is unrestricted.
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This is needed to prevent resource conflicts on hyper-threaded P4s. */
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#ifdef CONFIG_PERFCTR_CPUS_FORBIDDEN_MASK
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extern cpumask_t perfctr_cpus_forbidden_mask;
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#define perfctr_cpu_is_forbidden(cpu) cpu_isset((cpu), perfctr_cpus_forbidden_mask)
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#else
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#define perfctr_cpus_forbidden_mask CPU_MASK_NONE
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#define perfctr_cpu_is_forbidden(cpu) 0 /* cpu_isset() needs an lvalue :-( */
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#endif
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