arch/x86/kvm/mmutrace.h

   1 #if !defined(_TRACE_KVMMMU_H) || defined(TRACE_HEADER_MULTI_READ)
   2 #define _TRACE_KVMMMU_H
   3
   4 #include <linux/tracepoint.h>
   5 #include <linux/ftrace_event.h>
   6
   7 #undef TRACE_SYSTEM
   8 #define TRACE_SYSTEM kvmmmu
   9
  10 #define KVM_MMU_PAGE_FIELDS \
  11         __field(__u64, gfn) \
  12         __field(__u32, role) \
  13         __field(__u32, root_count) \
  14         __field(bool, unsync)
  15
  16 #define KVM_MMU_PAGE_ASSIGN(sp)                      \
  17         __entry->gfn = sp->gfn;                      \
  18         __entry->role = sp->role.word;               \
  19         __entry->root_count = sp->root_count;        \
  20         __entry->unsync = sp->unsync;
  21
  22 #define KVM_MMU_PAGE_PRINTK() ({                                        \
  23         const char *ret = p->buffer + p->len;                           \
  24         static const char *access_str[] = {                             \
  25                 "---", "--x", "w--", "w-x", "-u-", "-ux", "wu-", "wux"  \
  26         };                                                              \
  27         union kvm_mmu_page_role role;                                   \
  28                                                                         \
  29         role.word = __entry->role;                                      \
  30                                                                         \
  31         trace_seq_printf(p, "sp gfn %llx %u%s q%u%s %s%s"               \
  32                          " %snxe root %u %s%c",                         \
  33                          __entry->gfn, role.level,                      \
  34                          role.cr4_pae ? " pae" : "",                    \
  35                          role.quadrant,                                 \
  36                          role.direct ? " direct" : "",                  \
  37                          access_str[role.access],                       \
  38                          role.invalid ? " invalid" : "",                \
  39                          role.nxe ? "" : "!",                           \
  40                          __entry->root_count,                           \
  41                          __entry->unsync ? "unsync" : "sync", 0);       \
  42         ret;                                                            \
  43                 })
  44
  45 #define kvm_mmu_trace_pferr_flags       \
  46         { PFERR_PRESENT_MASK, "P" },    \
  47         { PFERR_WRITE_MASK, "W" },      \
  48         { PFERR_USER_MASK, "U" },       \
  49         { PFERR_RSVD_MASK, "RSVD" },    \
  50         { PFERR_FETCH_MASK, "F" }
  51
  52 /*
  53  * A pagetable walk has started
  54  */
  55 TRACE_EVENT(
  56         kvm_mmu_pagetable_walk,
  57         TP_PROTO(u64 addr, int write_fault, int user_fault, int fetch_fault),
  58         TP_ARGS(addr, write_fault, user_fault, fetch_fault),
  59
  60         TP_STRUCT__entry(
  61                 __field(__u64, addr)
  62                 __field(__u32, pferr)
  63         ),
  64
  65         TP_fast_assign(
  66                 __entry->addr = addr;
  67                 __entry->pferr = (!!write_fault << 1) | (!!user_fault << 2)
  68                                  | (!!fetch_fault << 4);
  69         ),
  70
  71         TP_printk("addr %llx pferr %x %s", __entry->addr, __entry->pferr,
  72                   __print_flags(__entry->pferr, "|", kvm_mmu_trace_pferr_flags))
  73 );
  74
  75
  76 /* We just walked a paging element */
  77 TRACE_EVENT(
  78         kvm_mmu_paging_element,
  79         TP_PROTO(u64 pte, int level),
  80         TP_ARGS(pte, level),
  81
  82         TP_STRUCT__entry(
  83                 __field(__u64, pte)
  84                 __field(__u32, level)
  85                 ),
  86
  87         TP_fast_assign(
  88                 __entry->pte = pte;
  89                 __entry->level = level;
  90                 ),
  91
  92         TP_printk("pte %llx level %u", __entry->pte, __entry->level)
  93 );
  94
  95 DECLARE_EVENT_CLASS(kvm_mmu_set_bit_class,
  96
  97         TP_PROTO(unsigned long table_gfn, unsigned index, unsigned size),
  98
  99         TP_ARGS(table_gfn, index, size),
 100
 101         TP_STRUCT__entry(
 102                 __field(__u64, gpa)
 103         ),
 104
 105         TP_fast_assign(
 106                 __entry->gpa = ((u64)table_gfn << PAGE_SHIFT)
 107                                 + index * size;
 108                 ),
 109
 110         TP_printk("gpa %llx", __entry->gpa)
 111 );
 112
 113 /* We set a pte accessed bit */
 114 DEFINE_EVENT(kvm_mmu_set_bit_class, kvm_mmu_set_accessed_bit,
 115
 116         TP_PROTO(unsigned long table_gfn, unsigned index, unsigned size),
 117
 118         TP_ARGS(table_gfn, index, size)
 119 );
 120
 121 /* We set a pte dirty bit */
 122 DEFINE_EVENT(kvm_mmu_set_bit_class, kvm_mmu_set_dirty_bit,
 123
 124         TP_PROTO(unsigned long table_gfn, unsigned index, unsigned size),
 125
 126         TP_ARGS(table_gfn, index, size)
 127 );
 128
 129 TRACE_EVENT(
 130         kvm_mmu_walker_error,
 131         TP_PROTO(u32 pferr),
 132         TP_ARGS(pferr),
 133
 134         TP_STRUCT__entry(
 135                 __field(__u32, pferr)
 136                 ),
 137
 138         TP_fast_assign(
 139                 __entry->pferr = pferr;
 140                 ),
 141
 142         TP_printk("pferr %x %s", __entry->pferr,
 143                   __print_flags(__entry->pferr, "|", kvm_mmu_trace_pferr_flags))
 144 );
 145
 146 TRACE_EVENT(
 147         kvm_mmu_get_page,
 148         TP_PROTO(struct kvm_mmu_page *sp, bool created),
 149         TP_ARGS(sp, created),
 150
 151         TP_STRUCT__entry(
 152                 KVM_MMU_PAGE_FIELDS
 153                 __field(bool, created)
 154                 ),
 155
 156         TP_fast_assign(
 157                 KVM_MMU_PAGE_ASSIGN(sp)
 158                 __entry->created = created;
 159                 ),
 160
 161         TP_printk("%s %s", KVM_MMU_PAGE_PRINTK(),
 162                   __entry->created ? "new" : "existing")
 163 );
 164
 165 DECLARE_EVENT_CLASS(kvm_mmu_page_class,
 166
 167         TP_PROTO(struct kvm_mmu_page *sp),
 168         TP_ARGS(sp),
 169
 170         TP_STRUCT__entry(
 171                 KVM_MMU_PAGE_FIELDS
 172         ),
 173
 174         TP_fast_assign(
 175                 KVM_MMU_PAGE_ASSIGN(sp)
 176         ),
 177
 178         TP_printk("%s", KVM_MMU_PAGE_PRINTK())
 179 );
 180
 181 DEFINE_EVENT(kvm_mmu_page_class, kvm_mmu_sync_page,
 182         TP_PROTO(struct kvm_mmu_page *sp),
 183
 184         TP_ARGS(sp)
 185 );
 186
 187 DEFINE_EVENT(kvm_mmu_page_class, kvm_mmu_unsync_page,
 188         TP_PROTO(struct kvm_mmu_page *sp),
 189
 190         TP_ARGS(sp)
 191 );
 192
 193 DEFINE_EVENT(kvm_mmu_page_class, kvm_mmu_zap_page,
 194         TP_PROTO(struct kvm_mmu_page *sp),
 195
 196         TP_ARGS(sp)
 197 );
 198 #endif /* _TRACE_KVMMMU_H */
 199
 200 #undef TRACE_INCLUDE_PATH
 201 #define TRACE_INCLUDE_PATH .
 202 #undef TRACE_INCLUDE_FILE
 203 #define TRACE_INCLUDE_FILE mmutrace
 204
 205 /* This part must be outside protection */
 206 #include <trace/define_trace.h>