FreeBSD/Linux Kernel Cross Reference
sys/amd64/vmm/vmm_stat.h

     /*-
      * Copyright (c) 2011 NetApp, Inc.
      * All rights reserved.
      *
      * Redistribution and use in source and binary forms, with or without
      * modification, are permitted provided that the following conditions
      * are met:
      * 1. Redistributions of source code must retain the above copyright
      *    notice, this list of conditions and the following disclaimer.
     * 2. Redistributions in binary form must reproduce the above copyright
     *    notice, this list of conditions and the following disclaimer in the
     *    documentation and/or other materials provided with the distribution.
     * 4. Neither the name of the University nor the names of its contributors
     *    may be used to endorse or promote products derived from this software
     *    without specific prior written permission.
     *
     * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     * SUCH DAMAGE.
     *
     * $FreeBSD: releng/11.0/sys/amd64/vmm/vmm_stat.h 283657 2015-05-28 17:37:01Z neel $
     */
    
    #ifndef _VMM_STAT_H_
    #define _VMM_STAT_H_
    
    struct vm;
    
    #define MAX_VMM_STAT_ELEMS      64              /* arbitrary */
    
    enum vmm_stat_scope {
            VMM_STAT_SCOPE_ANY,
            VMM_STAT_SCOPE_INTEL,           /* Intel VMX specific statistic */
            VMM_STAT_SCOPE_AMD,             /* AMD SVM specific statistic */
    };
    
    struct vmm_stat_type;
    typedef void (*vmm_stat_func_t)(struct vm *vm, int vcpu,
        struct vmm_stat_type *stat);
    
    struct vmm_stat_type {
            int     index;                  /* position in the stats buffer */
            int     nelems;                 /* standalone or array */
            const char *desc;               /* description of statistic */
            vmm_stat_func_t func;
            enum vmm_stat_scope scope;
    };
    
    void    vmm_stat_register(void *arg);
    
    #define VMM_STAT_FDEFINE(type, nelems, desc, func, scope)               \
            struct vmm_stat_type type[1] = {                                \
                    { -1, nelems, desc, func, scope }                       \
            };                                                              \
            SYSINIT(type##_stat, SI_SUB_KLD, SI_ORDER_ANY, vmm_stat_register, type)
    
    #define VMM_STAT_DEFINE(type, nelems, desc, scope)                      \
            VMM_STAT_FDEFINE(type, nelems, desc, NULL, scope)
    
    #define VMM_STAT_DECLARE(type)                                          \
            extern struct vmm_stat_type type[1]
    
    #define VMM_STAT(type, desc)            \
            VMM_STAT_DEFINE(type, 1, desc, VMM_STAT_SCOPE_ANY)
    #define VMM_STAT_INTEL(type, desc)      \
            VMM_STAT_DEFINE(type, 1, desc, VMM_STAT_SCOPE_INTEL)
    #define VMM_STAT_AMD(type, desc)        \
            VMM_STAT_DEFINE(type, 1, desc, VMM_STAT_SCOPE_AMD)
    
    #define VMM_STAT_FUNC(type, desc, func) \
            VMM_STAT_FDEFINE(type, 1, desc, func, VMM_STAT_SCOPE_ANY)
    
    #define VMM_STAT_ARRAY(type, nelems, desc)      \
            VMM_STAT_DEFINE(type, nelems, desc, VMM_STAT_SCOPE_ANY)
    
    void    *vmm_stat_alloc(void);
    void    vmm_stat_init(void *vp);
    void    vmm_stat_free(void *vp);
    
    /*
     * 'buf' should be at least fit 'MAX_VMM_STAT_TYPES' entries
     */
    int     vmm_stat_copy(struct vm *vm, int vcpu, int *num_stats, uint64_t *buf);
    int     vmm_stat_desc_copy(int index, char *buf, int buflen);
    
    static void __inline
    vmm_stat_array_incr(struct vm *vm, int vcpu, struct vmm_stat_type *vst,
                        int statidx, uint64_t x)
    {
    #ifdef VMM_KEEP_STATS
            uint64_t *stats;
           
           stats = vcpu_stats(vm, vcpu);
   
           if (vst->index >= 0 && statidx < vst->nelems)
                   stats[vst->index + statidx] += x;
   #endif
   }
   
   static void __inline
   vmm_stat_array_set(struct vm *vm, int vcpu, struct vmm_stat_type *vst,
                      int statidx, uint64_t val)
   {
   #ifdef VMM_KEEP_STATS
           uint64_t *stats;
           
           stats = vcpu_stats(vm, vcpu);
   
           if (vst->index >= 0 && statidx < vst->nelems)
                   stats[vst->index + statidx] = val;
   #endif
   }
                      
   static void __inline
   vmm_stat_incr(struct vm *vm, int vcpu, struct vmm_stat_type *vst, uint64_t x)
   {
   
   #ifdef VMM_KEEP_STATS
           vmm_stat_array_incr(vm, vcpu, vst, 0, x);
   #endif
   }
   
   static void __inline
   vmm_stat_set(struct vm *vm, int vcpu, struct vmm_stat_type *vst, uint64_t val)
   {
   
   #ifdef VMM_KEEP_STATS
           vmm_stat_array_set(vm, vcpu, vst, 0, val);
   #endif
   }
   
   VMM_STAT_DECLARE(VCPU_MIGRATIONS);
   VMM_STAT_DECLARE(VMEXIT_COUNT);
   VMM_STAT_DECLARE(VMEXIT_EXTINT);
   VMM_STAT_DECLARE(VMEXIT_HLT);
   VMM_STAT_DECLARE(VMEXIT_CR_ACCESS);
   VMM_STAT_DECLARE(VMEXIT_RDMSR);
   VMM_STAT_DECLARE(VMEXIT_WRMSR);
   VMM_STAT_DECLARE(VMEXIT_MTRAP);
   VMM_STAT_DECLARE(VMEXIT_PAUSE);
   VMM_STAT_DECLARE(VMEXIT_INTR_WINDOW);
   VMM_STAT_DECLARE(VMEXIT_NMI_WINDOW);
   VMM_STAT_DECLARE(VMEXIT_INOUT);
   VMM_STAT_DECLARE(VMEXIT_CPUID);
   VMM_STAT_DECLARE(VMEXIT_NESTED_FAULT);
   VMM_STAT_DECLARE(VMEXIT_INST_EMUL);
   VMM_STAT_DECLARE(VMEXIT_UNKNOWN);
   VMM_STAT_DECLARE(VMEXIT_ASTPENDING);
   VMM_STAT_DECLARE(VMEXIT_USERSPACE);
   VMM_STAT_DECLARE(VMEXIT_RENDEZVOUS);
   VMM_STAT_DECLARE(VMEXIT_EXCEPTION);
   VMM_STAT_DECLARE(VMEXIT_REQIDLE);
   #endif

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