instrumentation/events/lttng-module/arch/x86/kvm/mmutrace.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #if !defined(LTTNG_TRACE_KVM_MMU_H) || defined(TRACE_HEADER_MULTI_READ)
   3 #define LTTNG_TRACE_KVM_MMU_H
   4
   5 #include <probes/lttng-tracepoint-event.h>
   6 #include <linux/version.h>
   7
   8 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,2,0))
   9 #include <linux/trace_events.h>
  10 #else /* if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,2,0)) */
  11 #include <linux/ftrace_event.h>
  12 #endif /* #else #if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,2,0)) */
  13
  14 #undef TRACE_SYSTEM
  15 #define TRACE_SYSTEM kvm_mmu
  16
  17 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(5,1,0))
  18
  19 #define LTTNG_KVM_MMU_PAGE_FIELDS \
  20         ctf_integer(__u64, gfn, (sp)->gfn) \
  21         ctf_integer(__u32, role, (sp)->role.word) \
  22         ctf_integer(__u32, root_count, (sp)->root_count) \
  23         ctf_integer(bool, unsync, (sp)->unsync)
  24
  25 #elif (LINUX_VERSION_CODE >= KERNEL_VERSION(3,11,0))
  26
  27 #define LTTNG_KVM_MMU_PAGE_FIELDS \
  28         ctf_integer(unsigned long, mmu_valid_gen, (sp)->mmu_valid_gen) \
  29         ctf_integer(__u64, gfn, (sp)->gfn) \
  30         ctf_integer(__u32, role, (sp)->role.word) \
  31         ctf_integer(__u32, root_count, (sp)->root_count) \
  32         ctf_integer(bool, unsync, (sp)->unsync)
  33
  34 #else /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,11,0)) */
  35
  36 #define LTTNG_KVM_MMU_PAGE_FIELDS \
  37         ctf_integer(__u64, gfn, (sp)->gfn) \
  38         ctf_integer(__u32, role, (sp)->role.word) \
  39         ctf_integer(__u32, root_count, (sp)->root_count) \
  40         ctf_integer(bool, unsync, (sp)->unsync)
  41
  42 #endif /* #else #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,11,0)) */
  43
  44 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,6,0))
  45 /*
  46  * A pagetable walk has started
  47  */
  48 LTTNG_TRACEPOINT_EVENT(
  49         kvm_mmu_pagetable_walk,
  50         TP_PROTO(u64 addr, u32 pferr),
  51         TP_ARGS(addr, pferr),
  52
  53         TP_FIELDS(
  54                 ctf_integer_hex(__u64, addr, addr)
  55                 ctf_integer(__u32, pferr, pferr)
  56         )
  57 )
  58 #else /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,6,0)) */
  59 /*
  60  * A pagetable walk has started
  61  */
  62 LTTNG_TRACEPOINT_EVENT(
  63         kvm_mmu_pagetable_walk,
  64         TP_PROTO(u64 addr, int write_fault, int user_fault, int fetch_fault),
  65         TP_ARGS(addr, write_fault, user_fault, fetch_fault),
  66
  67         TP_FIELDS(
  68                 ctf_integer_hex(__u64, addr, addr)
  69                 ctf_integer(__u32, pferr,
  70                         (!!write_fault << 1) | (!!user_fault << 2)
  71                         | (!!fetch_fault << 4))
  72         )
  73 )
  74 #endif /* #else #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,6,0)) */
  75
  76 /* We just walked a paging element */
  77 LTTNG_TRACEPOINT_EVENT(
  78         kvm_mmu_paging_element,
  79         TP_PROTO(u64 pte, int level),
  80         TP_ARGS(pte, level),
  81
  82         TP_FIELDS(
  83                 ctf_integer(__u64, pte, pte)
  84                 ctf_integer(__u32, level, level)
  85         )
  86 )
  87
  88 LTTNG_TRACEPOINT_EVENT_CLASS(kvm_mmu_set_bit_class,
  89
  90         TP_PROTO(unsigned long table_gfn, unsigned index, unsigned size),
  91
  92         TP_ARGS(table_gfn, index, size),
  93
  94         TP_FIELDS(
  95                 ctf_integer(__u64, gpa,
  96                         ((u64)table_gfn << PAGE_SHIFT) + index * size)
  97         )
  98 )
  99
 100 /* We set a pte accessed bit */
 101 LTTNG_TRACEPOINT_EVENT_INSTANCE(kvm_mmu_set_bit_class, kvm_mmu_set_accessed_bit,
 102
 103         TP_PROTO(unsigned long table_gfn, unsigned index, unsigned size),
 104
 105         TP_ARGS(table_gfn, index, size)
 106 )
 107
 108 /* We set a pte dirty bit */
 109 LTTNG_TRACEPOINT_EVENT_INSTANCE(kvm_mmu_set_bit_class, kvm_mmu_set_dirty_bit,
 110
 111         TP_PROTO(unsigned long table_gfn, unsigned index, unsigned size),
 112
 113         TP_ARGS(table_gfn, index, size)
 114 )
 115
 116 LTTNG_TRACEPOINT_EVENT(
 117         kvm_mmu_walker_error,
 118         TP_PROTO(u32 pferr),
 119         TP_ARGS(pferr),
 120
 121         TP_FIELDS(
 122                 ctf_integer(__u32, pferr, pferr)
 123         )
 124 )
 125
 126 LTTNG_TRACEPOINT_EVENT(
 127         kvm_mmu_get_page,
 128         TP_PROTO(struct kvm_mmu_page *sp, bool created),
 129         TP_ARGS(sp, created),
 130
 131         TP_FIELDS(
 132                 LTTNG_KVM_MMU_PAGE_FIELDS
 133                 ctf_integer(bool, created, created)
 134         )
 135 )
 136
 137 LTTNG_TRACEPOINT_EVENT_CLASS(kvm_mmu_page_class,
 138
 139         TP_PROTO(struct kvm_mmu_page *sp),
 140         TP_ARGS(sp),
 141
 142         TP_FIELDS(
 143                 LTTNG_KVM_MMU_PAGE_FIELDS
 144         )
 145 )
 146
 147 LTTNG_TRACEPOINT_EVENT_INSTANCE(kvm_mmu_page_class, kvm_mmu_sync_page,
 148         TP_PROTO(struct kvm_mmu_page *sp),
 149
 150         TP_ARGS(sp)
 151 )
 152
 153 LTTNG_TRACEPOINT_EVENT_INSTANCE(kvm_mmu_page_class, kvm_mmu_unsync_page,
 154         TP_PROTO(struct kvm_mmu_page *sp),
 155
 156         TP_ARGS(sp)
 157 )
 158
 159 LTTNG_TRACEPOINT_EVENT_INSTANCE(kvm_mmu_page_class, kvm_mmu_prepare_zap_page,
 160         TP_PROTO(struct kvm_mmu_page *sp),
 161
 162         TP_ARGS(sp)
 163 )
 164
 165 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,11,0))
 166
 167 LTTNG_TRACEPOINT_EVENT_MAP(
 168         mark_mmio_spte,
 169
 170         kvm_mmu_mark_mmio_spte,
 171
 172         TP_PROTO(u64 *sptep, gfn_t gfn, unsigned access, unsigned int gen),
 173         TP_ARGS(sptep, gfn, access, gen),
 174
 175         TP_FIELDS(
 176                 ctf_integer_hex(void *, sptep, sptep)
 177                 ctf_integer(gfn_t, gfn, gfn)
 178                 ctf_integer(unsigned, access, access)
 179                 ctf_integer(unsigned int, gen, gen)
 180         )
 181 )
 182
 183 #else /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,11,0)) */
 184
 185 LTTNG_TRACEPOINT_EVENT_MAP(
 186         mark_mmio_spte,
 187
 188         kvm_mmu_mark_mmio_spte,
 189
 190         TP_PROTO(u64 *sptep, gfn_t gfn, unsigned access),
 191         TP_ARGS(sptep, gfn, access),
 192
 193         TP_FIELDS(
 194                 ctf_integer_hex(void *, sptep, sptep)
 195                 ctf_integer(gfn_t, gfn, gfn)
 196                 ctf_integer(unsigned, access, access)
 197         )
 198 )
 199
 200 #endif /* #else #if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,11,0)) */
 201
 202 LTTNG_TRACEPOINT_EVENT_MAP(
 203         handle_mmio_page_fault,
 204
 205         kvm_mmu_handle_mmio_page_fault,
 206
 207         TP_PROTO(u64 addr, gfn_t gfn, unsigned access),
 208         TP_ARGS(addr, gfn, access),
 209
 210         TP_FIELDS(
 211                 ctf_integer_hex(u64, addr, addr)
 212                 ctf_integer(gfn_t, gfn, gfn)
 213                 ctf_integer(unsigned, access, access)
 214         )
 215 )
 216
 217 #if (LINUX_VERSION_CODE >= KERNEL_VERSION(5,6,0) || \
 218         LTTNG_KERNEL_RANGE(4,19,103, 4,20,0) || \
 219         LTTNG_KERNEL_RANGE(5,4,19, 5,5,0) || \
 220         LTTNG_KERNEL_RANGE(5,5,3, 5,6,0) || \
 221         LTTNG_UBUNTU_KERNEL_RANGE(4,15,18,92, 4,16,0,0))
 222 LTTNG_TRACEPOINT_EVENT_MAP(
 223         fast_page_fault,
 224
 225         kvm_mmu_fast_page_fault,
 226
 227         TP_PROTO(struct kvm_vcpu *vcpu, gpa_t cr2_or_gpa, u32 error_code,
 228                  u64 *sptep, u64 old_spte, bool retry),
 229         TP_ARGS(vcpu, cr2_or_gpa, error_code, sptep, old_spte, retry),
 230
 231         TP_FIELDS(
 232                 ctf_integer(int, vcpu_id, vcpu->vcpu_id)
 233                 ctf_integer(gpa_t, cr2_or_gpa, cr2_or_gpa)
 234                 ctf_integer(u32, error_code, error_code)
 235                 ctf_integer_hex(u64 *, sptep, sptep)
 236                 ctf_integer(u64, old_spte, old_spte)
 237                 ctf_integer(u64, new_spte, *sptep)
 238                 ctf_integer(bool, retry, retry)
 239         )
 240 )
 241 #else
 242 LTTNG_TRACEPOINT_EVENT_MAP(
 243         fast_page_fault,
 244
 245         kvm_mmu_fast_page_fault,
 246
 247         TP_PROTO(struct kvm_vcpu *vcpu, gva_t gva, u32 error_code,
 248                  u64 *sptep, u64 old_spte, bool retry),
 249         TP_ARGS(vcpu, gva, error_code, sptep, old_spte, retry),
 250
 251         TP_FIELDS(
 252                 ctf_integer(int, vcpu_id, vcpu->vcpu_id)
 253                 ctf_integer(gva_t, gva, gva)
 254                 ctf_integer(u32, error_code, error_code)
 255                 ctf_integer_hex(u64 *, sptep, sptep)
 256                 ctf_integer(u64, old_spte, old_spte)
 257                 ctf_integer(u64, new_spte, *sptep)
 258                 ctf_integer(bool, retry, retry)
 259         )
 260 )
 261 #endif
 262
 263 #endif /* LTTNG_TRACE_KVM_MMU_H */
 264
 265 #undef TRACE_INCLUDE_PATH
 266 #define TRACE_INCLUDE_PATH instrumentation/events/lttng-module/arch/x86/kvm
 267 #undef TRACE_INCLUDE_FILE
 268 #define TRACE_INCLUDE_FILE mmutrace
 269
 270 /* This part must be outside protection */
 271 #include <probes/define_trace.h>