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 #define TRACE_INCLUDE_PATH .
  10 #define TRACE_INCLUDE_FILE mmutrace
  11
  12 #define KVM_MMU_PAGE_FIELDS \
  13         __field(__u64, gfn) \
  14         __field(__u32, role) \
  15         __field(__u32, root_count) \
  16         __field(__u32, unsync)
  17
  18 #define KVM_MMU_PAGE_ASSIGN(sp)                      \
  19         __entry->gfn = sp->gfn;                      \
  20         __entry->role = sp->role.word;               \
  21         __entry->root_count = sp->root_count;        \
  22         __entry->unsync = sp->unsync;
  23
  24 #define KVM_MMU_PAGE_PRINTK() ({                                        \
  25         const char *ret = p->buffer + p->len;                           \
  26         static const char *access_str[] = {                             \
  27                 "---", "--x", "w--", "w-x", "-u-", "-ux", "wu-", "wux"  \
  28         };                                                              \
  29         union kvm_mmu_page_role role;                                   \
  30                                                                         \
  31         role.word = __entry->role;                                      \
  32                                                                         \
  33         trace_seq_printf(p, "sp gfn %llx %u/%u q%u%s %s%s %spge"        \
  34                          " %snxe root %u %s%c",                         \
  35                          __entry->gfn, role.level, role.glevels,        \
  36                          role.quadrant,                                 \
  37                          role.direct ? " direct" : "",                  \
  38                          access_str[role.access],                       \
  39                          role.invalid ? " invalid" : "",                \
  40                          role.cr4_pge ? "" : "!",                       \
  41                          role.nxe ? "" : "!",                           \
  42                          __entry->root_count,                           \
  43                          __entry->unsync ? "unsync" : "sync", 0);       \
  44         ret;                                                            \
  45                 })
  46
  47 #define kvm_mmu_trace_pferr_flags       \
  48         { PFERR_PRESENT_MASK, "P" },    \
  49         { PFERR_WRITE_MASK, "W" },      \
  50         { PFERR_USER_MASK, "U" },       \
  51         { PFERR_RSVD_MASK, "RSVD" },    \
  52         { PFERR_FETCH_MASK, "F" }
  53
  54 /*
  55  * A pagetable walk has started
  56  */
  57 TRACE_EVENT(
  58         kvm_mmu_pagetable_walk,
  59         TP_PROTO(u64 addr, int write_fault, int user_fault, int fetch_fault),
  60         TP_ARGS(addr, write_fault, user_fault, fetch_fault),
  61
  62         TP_STRUCT__entry(
  63                 __field(__u64, addr)
  64                 __field(__u32, pferr)
  65         ),
  66
  67         TP_fast_assign(
  68                 __entry->addr = addr;
  69                 __entry->pferr = (!!write_fault << 1) | (!!user_fault << 2)
  70                                  | (!!fetch_fault << 4);
  71         ),
  72
  73         TP_printk("addr %llx pferr %x %s", __entry->addr, __entry->pferr,
  74                   __print_flags(__entry->pferr, "|", kvm_mmu_trace_pferr_flags))
  75 );
  76
  77
  78 /* We just walked a paging element */
  79 TRACE_EVENT(
  80         kvm_mmu_paging_element,
  81         TP_PROTO(u64 pte, int level),
  82         TP_ARGS(pte, level),
  83
  84         TP_STRUCT__entry(
  85                 __field(__u64, pte)
  86                 __field(__u32, level)
  87                 ),
  88
  89         TP_fast_assign(
  90                 __entry->pte = pte;
  91                 __entry->level = level;
  92                 ),
  93
  94         TP_printk("pte %llx level %u", __entry->pte, __entry->level)
  95 );
  96
  97 /* We set a pte accessed bit */
  98 TRACE_EVENT(
  99         kvm_mmu_set_accessed_bit,
 100         TP_PROTO(unsigned long table_gfn, unsigned index, unsigned size),
 101         TP_ARGS(table_gfn, index, size),
 102
 103         TP_STRUCT__entry(
 104                 __field(__u64, gpa)
 105                 ),
 106
 107         TP_fast_assign(
 108                 __entry->gpa = ((u64)table_gfn << PAGE_SHIFT)
 109                                 + index * size;
 110                 ),
 111
 112         TP_printk("gpa %llx", __entry->gpa)
 113 );
 114
 115 /* We set a pte dirty bit */
 116 TRACE_EVENT(
 117         kvm_mmu_set_dirty_bit,
 118         TP_PROTO(unsigned long table_gfn, unsigned index, unsigned size),
 119         TP_ARGS(table_gfn, index, size),
 120
 121         TP_STRUCT__entry(
 122                 __field(__u64, gpa)
 123                 ),
 124
 125         TP_fast_assign(
 126                 __entry->gpa = ((u64)table_gfn << PAGE_SHIFT)
 127                                 + index * size;
 128                 ),
 129
 130         TP_printk("gpa %llx", __entry->gpa)
 131 );
 132
 133 TRACE_EVENT(
 134         kvm_mmu_walker_error,
 135         TP_PROTO(u32 pferr),
 136         TP_ARGS(pferr),
 137
 138         TP_STRUCT__entry(
 139                 __field(__u32, pferr)
 140                 ),
 141
 142         TP_fast_assign(
 143                 __entry->pferr = pferr;
 144                 ),
 145
 146         TP_printk("pferr %x %s", __entry->pferr,
 147                   __print_flags(__entry->pferr, "|", kvm_mmu_trace_pferr_flags))
 148 );
 149
 150 TRACE_EVENT(
 151         kvm_mmu_get_page,
 152         TP_PROTO(struct kvm_mmu_page *sp, bool created),
 153         TP_ARGS(sp, created),
 154
 155         TP_STRUCT__entry(
 156                 KVM_MMU_PAGE_FIELDS
 157                 __field(bool, created)
 158                 ),
 159
 160         TP_fast_assign(
 161                 KVM_MMU_PAGE_ASSIGN(sp)
 162                 __entry->created = created;
 163                 ),
 164
 165         TP_printk("%s %s", KVM_MMU_PAGE_PRINTK(),
 166                   __entry->created ? "new" : "existing")
 167 );
 168
 169 TRACE_EVENT(
 170         kvm_mmu_sync_page,
 171         TP_PROTO(struct kvm_mmu_page *sp),
 172         TP_ARGS(sp),
 173
 174         TP_STRUCT__entry(
 175                 KVM_MMU_PAGE_FIELDS
 176                 ),
 177
 178         TP_fast_assign(
 179                 KVM_MMU_PAGE_ASSIGN(sp)
 180                 ),
 181
 182         TP_printk("%s", KVM_MMU_PAGE_PRINTK())
 183 );
 184
 185 TRACE_EVENT(
 186         kvm_mmu_unsync_page,
 187         TP_PROTO(struct kvm_mmu_page *sp),
 188         TP_ARGS(sp),
 189
 190         TP_STRUCT__entry(
 191                 KVM_MMU_PAGE_FIELDS
 192                 ),
 193
 194         TP_fast_assign(
 195                 KVM_MMU_PAGE_ASSIGN(sp)
 196                 ),
 197
 198         TP_printk("%s", KVM_MMU_PAGE_PRINTK())
 199 );
 200
 201 TRACE_EVENT(
 202         kvm_mmu_zap_page,
 203         TP_PROTO(struct kvm_mmu_page *sp),
 204         TP_ARGS(sp),
 205
 206         TP_STRUCT__entry(
 207                 KVM_MMU_PAGE_FIELDS
 208                 ),
 209
 210         TP_fast_assign(
 211                 KVM_MMU_PAGE_ASSIGN(sp)
 212                 ),
 213
 214         TP_printk("%s", KVM_MMU_PAGE_PRINTK())
 215 );
 216
 217 #endif /* _TRACE_KVMMMU_H */
 218
 219 /* This part must be outside protection */
 220 #include <trace/define_trace.h>