From 57f0f512b273f60d52568b8c6b77e17f5636edc0 Mon Sep 17 00:00:00 2001 From: André Fabian Silva Delgado Date: Wed, 5 Aug 2015 17:04:01 -0300 Subject: Initial import --- arch/x86/oprofile/op_x86_model.h | 90 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 90 insertions(+) create mode 100644 arch/x86/oprofile/op_x86_model.h (limited to 'arch/x86/oprofile/op_x86_model.h') diff --git a/arch/x86/oprofile/op_x86_model.h b/arch/x86/oprofile/op_x86_model.h new file mode 100644 index 000000000..71e8a6733 --- /dev/null +++ b/arch/x86/oprofile/op_x86_model.h @@ -0,0 +1,90 @@ +/** + * @file op_x86_model.h + * interface to x86 model-specific MSR operations + * + * @remark Copyright 2002 OProfile authors + * @remark Read the file COPYING + * + * @author Graydon Hoare + * @author Robert Richter + */ + +#ifndef OP_X86_MODEL_H +#define OP_X86_MODEL_H + +#include +#include + +struct op_msr { + unsigned long addr; + u64 saved; +}; + +struct op_msrs { + struct op_msr *counters; + struct op_msr *controls; + struct op_msr *multiplex; +}; + +struct pt_regs; + +struct oprofile_operations; + +/* The model vtable abstracts the differences between + * various x86 CPU models' perfctr support. + */ +struct op_x86_model_spec { + unsigned int num_counters; + unsigned int num_controls; + unsigned int num_virt_counters; + u64 reserved; + u16 event_mask; + int (*init)(struct oprofile_operations *ops); + int (*fill_in_addresses)(struct op_msrs * const msrs); + void (*setup_ctrs)(struct op_x86_model_spec const *model, + struct op_msrs const * const msrs); + int (*check_ctrs)(struct pt_regs * const regs, + struct op_msrs const * const msrs); + void (*start)(struct op_msrs const * const msrs); + void (*stop)(struct op_msrs const * const msrs); + void (*shutdown)(struct op_msrs const * const msrs); +#ifdef CONFIG_OPROFILE_EVENT_MULTIPLEX + void (*switch_ctrl)(struct op_x86_model_spec const *model, + struct op_msrs const * const msrs); +#endif +}; + +struct op_counter_config; + +static inline void op_x86_warn_in_use(int counter) +{ + /* + * The warning indicates an already running counter. If + * oprofile doesn't collect data, then try using a different + * performance counter on your platform to monitor the desired + * event. Delete counter #%d from the desired event by editing + * the /usr/share/oprofile/%s//events file. If the event + * cannot be monitored by any other counter, contact your + * hardware or BIOS vendor. + */ + pr_warning("oprofile: counter #%d on cpu #%d may already be used\n", + counter, smp_processor_id()); +} + +static inline void op_x86_warn_reserved(int counter) +{ + pr_warning("oprofile: counter #%d is already reserved\n", counter); +} + +extern u64 op_x86_get_ctrl(struct op_x86_model_spec const *model, + struct op_counter_config *counter_config); +extern int op_x86_phys_to_virt(int phys); +extern int op_x86_virt_to_phys(int virt); + +extern struct op_x86_model_spec op_ppro_spec; +extern struct op_x86_model_spec op_p4_spec; +extern struct op_x86_model_spec op_p4_ht2_spec; +extern struct op_x86_model_spec op_amd_spec; +extern struct op_x86_model_spec op_arch_perfmon_spec; + +#endif /* OP_X86_MODEL_H */ -- cgit v1.2.3-54-g00ecf