LXR linux/arch/x86/oprofile/op_x86

   1/**
   2 * @file op_x86_model.h
   3 * interface to x86 model-specific MSR operations
   4 *
   5 * @remark Copyright 2002 OProfile authors
   6 * @remark Read the file COPYING
   7 *
   8 * @author Graydon Hoare
   9 * @author Robert Richter <robert.richter@amd.com>
  10 */
  11
  12#ifndef OP_X86_MODEL_H
  13#define OP_X86_MODEL_H
  14
  15#include <asm/types.h>
  16#include <asm/perf_event.h>
  17
  18struct op_msr {
  19        unsigned long   addr;
  20        u64             saved;
  21};
  22
  23struct op_msrs {
  24        struct op_msr *counters;
  25        struct op_msr *controls;
  26        struct op_msr *multiplex;
  27};
  28
  29struct pt_regs;
  30
  31struct oprofile_operations;
  32
  33/* The model vtable abstracts the differences between
  34 * various x86 CPU models' perfctr support.
  35 */
  36struct op_x86_model_spec {
  37        unsigned int    num_counters;
  38        unsigned int    num_controls;
  39        unsigned int    num_virt_counters;
  40        u64             reserved;
  41        u16             event_mask;
  42        int             (*init)(struct oprofile_operations *ops);
  43        int             (*fill_in_addresses)(struct op_msrs * const msrs);
  44        void            (*setup_ctrs)(struct op_x86_model_spec const *model,
  45                                      struct op_msrs const * const msrs);
  46        void            (*cpu_down)(void);
  47        int             (*check_ctrs)(struct pt_regs * const regs,
  48                                      struct op_msrs const * const msrs);
  49        void            (*start)(struct op_msrs const * const msrs);
  50        void            (*stop)(struct op_msrs const * const msrs);
  51        void            (*shutdown)(struct op_msrs const * const msrs);
  52#ifdef CONFIG_OPROFILE_EVENT_MULTIPLEX
  53        void            (*switch_ctrl)(struct op_x86_model_spec const *model,
  54                                       struct op_msrs const * const msrs);
  55#endif
  56};
  57
  58struct op_counter_config;
  59
  60static inline void op_x86_warn_in_use(int counter)
  61{
  62        /*
  63         * The warning indicates an already running counter. If
  64         * oprofile doesn't collect data, then try using a different
  65         * performance counter on your platform to monitor the desired
  66         * event. Delete counter #%d from the desired event by editing
  67         * the /usr/share/oprofile/%s/<cpu>/events file. If the event
  68         * cannot be monitored by any other counter, contact your
  69         * hardware or BIOS vendor.
  70         */
  71        pr_warning("oprofile: counter #%d on cpu #%d may already be used\n",
  72                   counter, smp_processor_id());
  73}
  74
  75static inline void op_x86_warn_reserved(int counter)
  76{
  77        pr_warning("oprofile: counter #%d is already reserved\n", counter);
  78}
  79
  80extern u64 op_x86_get_ctrl(struct op_x86_model_spec const *model,
  81                           struct op_counter_config *counter_config);
  82extern int op_x86_phys_to_virt(int phys);
  83extern int op_x86_virt_to_phys(int virt);
  84
  85extern struct op_x86_model_spec op_ppro_spec;
  86extern struct op_x86_model_spec op_p4_spec;
  87extern struct op_x86_model_spec op_p4_ht2_spec;
  88extern struct op_x86_model_spec op_amd_spec;
  89extern struct op_x86_model_spec op_arch_perfmon_spec;
  90
  91#endif /* OP_X86_MODEL_H */
  92