#ifndef CREATE_SYSCALL_TABLE
+/*
+ * The `flags` argument of the mmap syscall is split in two parts:
+ * - The type of mapping is described by the four least significant bits of the 4
+ * bytes integer,
+ * - The options on the mapping are described by the remaining 28 most
+ * significant bits.
+ */
+#define MAPPING_TYPE_RESERVED_BITS 4
+#define LTTNG_MMAP_FLAGS_TO_CTF(x) ((x) >> MAPPING_TYPE_RESERVED_BITS)
+
+/*
+ * Enumeration of the mmap flags, as described in the 'mmap'
+ * system call man page.
+ */
+SC_LTTNG_TRACEPOINT_ENUM(lttng_mmap_protection,
+ TP_ENUM_VALUES(
+ ctf_enum_value("PROT_EXEC", PROT_EXEC)
+ ctf_enum_value("PROT_READ", PROT_READ)
+ ctf_enum_value("PROT_WRITE", PROT_WRITE)
+ ctf_enum_value("PROT_NONE", PROT_NONE)
+ )
+)
+
+SC_LTTNG_TRACEPOINT_ENUM(lttng_mmap_flags_mapping_type,
+ TP_ENUM_VALUES(
+ ctf_enum_value("MAP_SHARED", MAP_SHARED)
+ ctf_enum_value("MAP_PRIVATE", MAP_PRIVATE)
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,15,0))
+ ctf_enum_value("MAP_SHARED_VALIDATE", MAP_SHARED_VALIDATE)
+#endif /* (LINUX_VERSION_CODE >= KERNEL_VERSION(4,15,0)) */
+ )
+)
+
+/*
+ * Shift the values of the options so we can read them from the `flags` integer
+ * directly.
+ */
+SC_LTTNG_TRACEPOINT_ENUM(lttng_mmap_flags_options,
+ TP_ENUM_VALUES(
+ ctf_enum_value("<none>", 0)
+ ctf_enum_value("MAP_32BIT", LTTNG_MMAP_FLAGS_TO_CTF(MAP_32BIT))
+ ctf_enum_value("MAP_ANONYMOUS", LTTNG_MMAP_FLAGS_TO_CTF(MAP_ANONYMOUS))
+ ctf_enum_value("MAP_DENYWRITE", LTTNG_MMAP_FLAGS_TO_CTF(MAP_DENYWRITE))
+ ctf_enum_value("MAP_EXECUTABLE", LTTNG_MMAP_FLAGS_TO_CTF(MAP_EXECUTABLE))
+ ctf_enum_value("MAP_FIXED", LTTNG_MMAP_FLAGS_TO_CTF(MAP_FIXED))
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,17,0))
+ ctf_enum_value("MAP_FIXED_NOREPLACE", LTTNG_MMAP_FLAGS_TO_CTF(MAP_FIXED_NOREPLACE))
+#endif /* (LINUX_VERSION_CODE >= KERNEL_VERSION(4,17,0)) */
+ ctf_enum_value("MAP_GROWSDOWN", LTTNG_MMAP_FLAGS_TO_CTF(MAP_GROWSDOWN))
+ ctf_enum_value("MAP_HUGETLB", LTTNG_MMAP_FLAGS_TO_CTF(MAP_HUGETLB))
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3,8,0))
+ ctf_enum_value("MAP_HUGETLB_2MB", LTTNG_MMAP_FLAGS_TO_CTF(MAP_HUGE_2MB))
+ ctf_enum_value("MAP_HUGETLB_1GB", LTTNG_MMAP_FLAGS_TO_CTF(MAP_HUGE_1GB))
+#endif /* (LINUX_VERSION_CODE >= KERNEL_VERSION(3,8,0)) */
+ ctf_enum_value("MAP_LOCKED", LTTNG_MMAP_FLAGS_TO_CTF(MAP_LOCKED))
+ ctf_enum_value("MAP_NONBLOCK", LTTNG_MMAP_FLAGS_TO_CTF(MAP_NONBLOCK))
+ ctf_enum_value("MAP_NORESERVE", LTTNG_MMAP_FLAGS_TO_CTF(MAP_NORESERVE))
+ ctf_enum_value("MAP_POPULATE", LTTNG_MMAP_FLAGS_TO_CTF(MAP_POPULATE))
+ ctf_enum_value("MAP_STACK", LTTNG_MMAP_FLAGS_TO_CTF(MAP_STACK))
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,15,0))
+ ctf_enum_value("MAP_SYNC", LTTNG_MMAP_FLAGS_TO_CTF(MAP_SYNC))
+#endif /* (LINUX_VERSION_CODE >= KERNEL_VERSION(4,15,0)) */
+ ctf_enum_value("MAP_UNINITIALIZED", LTTNG_MMAP_FLAGS_TO_CTF(MAP_UNINITIALIZED))
+ )
+)
+
+#define LTTNG_MMAP_FLAGS_TYPE \
+{ \
+ .name = "type", \
+ .type = { \
+ .atype = atype_enum_nestable, \
+ .u = { \
+ .enum_nestable = { \
+ .desc = &__enum_lttng_mmap_flags_mapping_type, \
+ .container_type = __LTTNG_COMPOUND_LITERAL( \
+ struct lttng_type, __type_integer(uint32_t, \
+ 4, 1, -1, __BYTE_ORDER, 16, none)), \
+ }, \
+ }, \
+ }, \
+}
+
+#define LTTNG_MMAP_FLAGS_OPTIONS \
+{ \
+ .name = "options", \
+ .type = { \
+ .atype = atype_enum_nestable, \
+ .u = { \
+ .enum_nestable = { \
+ .desc = &__enum_lttng_mmap_flags_options, \
+ .container_type = __LTTNG_COMPOUND_LITERAL( \
+ struct lttng_type, __type_integer(uint32_t, \
+ 28, 1, -1, __BYTE_ORDER, 16, none)),\
+ }, \
+ }, \
+ }, \
+}
+
+#if (__BYTE_ORDER == __LITTLE_ENDIAN)
+#define LTTNG_MMAP_FLAGS \
+ [0] = LTTNG_MMAP_FLAGS_TYPE, \
+ [1] = LTTNG_MMAP_FLAGS_OPTIONS,
+
+#else
+#define LTTNG_MMAP_FLAGS \
+ [0] = LTTNG_MMAP_FLAGS_OPTIONS, \
+ [1] = LTTNG_MMAP_FLAGS_TYPE,
+#endif
+
+/*
+ * Use a custom field here so that tracer writes a single integer and the
+ * work of splitting it up in two fields is left to the trace reader.
+ */
#define OVERRIDE_32_mmap
#define OVERRIDE_64_mmap
SC_LTTNG_TRACEPOINT_EVENT(mmap,
TP_FIELDS(sc_exit(ctf_integer_hex(unsigned long, ret, ret))
sc_in(ctf_integer_hex(unsigned long, addr, addr))
sc_in(ctf_integer(size_t, len, len))
- sc_in(ctf_integer(int, prot, prot))
- sc_in(ctf_integer(int, flags, flags))
+ sc_in(ctf_enum(lttng_mmap_protection, int, prot, prot))
+ sc_in(
+ ctf_custom_field(
+ ctf_custom_type(
+ {
+ .atype = atype_struct_nestable,
+ .u.struct_nestable.nr_fields = 2,
+ .u.struct_nestable.fields =
+ __LTTNG_COMPOUND_LITERAL(struct lttng_event_field,
+ LTTNG_MMAP_FLAGS
+ ),
+ .u.struct_nestable.alignment = lttng_alignof(uint32_t) * CHAR_BIT,
+ }
+ ),
+ flags,
+ ctf_custom_code(
+ ctf_integer_type(uint32_t, flags)
+ )
+ )
+ )
sc_in(ctf_integer(int, fd, fd))
sc_in(ctf_integer(off_t, offset, off))
)
projects / lttng-modules.git / blobdiff