X-Git-Url: https://git.lttng.org/?p=lttng-tools.git;a=blobdiff_plain;f=src%2Fbin%2Flttng-sessiond%2Flttng-ust-abi.h;h=423a0c2e39534392557aa400d421ddaf1accafa9;hp=ef663ced23ca633991eede0c73a7ece811a16400;hb=c2839c02fa58cd6a1335a0b8ae499e67bbdb48cb;hpb=bb719d46a65d5c4647c5fe0e344c18a1f2b8a624 diff --git a/src/bin/lttng-sessiond/lttng-ust-abi.h b/src/bin/lttng-sessiond/lttng-ust-abi.h index ef663ced2..423a0c2e3 100644 --- a/src/bin/lttng-sessiond/lttng-ust-abi.h +++ b/src/bin/lttng-sessiond/lttng-ust-abi.h @@ -28,18 +28,24 @@ */ #include -#include -#define LTTNG_UST_SYM_NAME_LEN 256 +#define lttng_ust_notrace __attribute__((no_instrument_function)) +#define LTTNG_PACKED __attribute__((__packed__)) -/* Version for comm protocol between sessiond and ust */ -#define LTTNG_UST_COMM_VERSION_MAJOR 2 -#define LTTNG_UST_COMM_VERSION_MINOR 1 +#ifndef __ust_stringify +#define __ust_stringify1(x) #x +#define __ust_stringify(x) __ust_stringify1(x) +#endif /* __ust_stringify */ + +#define LTTNG_UST_SYM_NAME_LEN 256 +#define LTTNG_UST_ABI_PROCNAME_LEN 16 + +/* UST comm magic number, used to validate protocol and endianness. */ +#define LTTNG_UST_COMM_MAGIC 0xC57C57C5 /* Version for ABI between liblttng-ust, sessiond, consumerd */ -#define LTTNG_UST_INTERNAL_MAJOR_VERSION 3 -#define LTTNG_UST_INTERNAL_MINOR_VERSION 0 -#define LTTNG_UST_INTERNAL_PATCHLEVEL_VERSION 0 +#define LTTNG_UST_ABI_MAJOR_VERSION 6 +#define LTTNG_UST_ABI_MINOR_VERSION 0 enum lttng_ust_instrumentation { LTTNG_UST_TRACEPOINT = 0, @@ -57,35 +63,45 @@ enum lttng_ust_output { LTTNG_UST_MMAP = 0, }; +enum lttng_ust_chan_type { + LTTNG_UST_CHAN_PER_CPU = 0, + LTTNG_UST_CHAN_METADATA = 1, +}; + struct lttng_ust_tracer_version { uint32_t major; uint32_t minor; uint32_t patchlevel; } LTTNG_PACKED; -#define LTTNG_UST_CHANNEL_PADDING LTTNG_UST_SYM_NAME_LEN + 32 +#define LTTNG_UST_CHANNEL_PADDING (LTTNG_UST_SYM_NAME_LEN + 32) +/* + * Given that the consumerd is limited to 64k file descriptors, we + * cannot expect much more than 1MB channel structure size. This size is + * depends on the number of streams within a channel, which depends on + * the number of possible CPUs on the system. + */ +#define LTTNG_UST_CHANNEL_DATA_MAX_LEN 1048576U struct lttng_ust_channel { - uint64_t subbuf_size; /* in bytes */ - uint64_t num_subbuf; - int overwrite; /* 1: overwrite, 0: discard */ - unsigned int switch_timer_interval; /* usecs */ - unsigned int read_timer_interval; /* usecs */ - enum lttng_ust_output output; /* output mode */ + uint64_t len; + enum lttng_ust_chan_type type; char padding[LTTNG_UST_CHANNEL_PADDING]; + char data[]; /* variable sized data */ } LTTNG_PACKED; -#define LTTNG_UST_STREAM_PADDING1 16 -#define LTTNG_UST_STREAM_PADDING2 LTTNG_UST_SYM_NAME_LEN + 32 +#define LTTNG_UST_STREAM_PADDING1 (LTTNG_UST_SYM_NAME_LEN + 32) struct lttng_ust_stream { + uint64_t len; /* shm len */ + uint32_t stream_nr; /* stream number */ char padding[LTTNG_UST_STREAM_PADDING1]; - - union { - char padding[LTTNG_UST_STREAM_PADDING2]; - } u; + /* + * shm_fd and wakeup_fd are send over unix socket as file + * descriptors after this structure. + */ } LTTNG_PACKED; #define LTTNG_UST_EVENT_PADDING1 16 -#define LTTNG_UST_EVENT_PADDING2 LTTNG_UST_SYM_NAME_LEN + 32 +#define LTTNG_UST_EVENT_PADDING2 (LTTNG_UST_SYM_NAME_LEN + 32) struct lttng_ust_event { enum lttng_ust_instrumentation instrumentation; char name[LTTNG_UST_SYM_NAME_LEN]; /* event name */ @@ -108,7 +124,7 @@ enum lttng_ust_field_type { LTTNG_UST_FIELD_STRING = 4, }; -#define LTTNG_UST_FIELD_ITER_PADDING LTTNG_UST_SYM_NAME_LEN + 28 +#define LTTNG_UST_FIELD_ITER_PADDING (LTTNG_UST_SYM_NAME_LEN + 28) struct lttng_ust_field_iter { char event_name[LTTNG_UST_SYM_NAME_LEN]; char field_name[LTTNG_UST_SYM_NAME_LEN]; @@ -123,15 +139,24 @@ enum lttng_ust_context_type { LTTNG_UST_CONTEXT_VPID = 1, LTTNG_UST_CONTEXT_PTHREAD_ID = 2, LTTNG_UST_CONTEXT_PROCNAME = 3, + LTTNG_UST_CONTEXT_IP = 4, + LTTNG_UST_CONTEXT_PERF_THREAD_COUNTER = 5, }; +struct lttng_ust_perf_counter_ctx { + uint32_t type; + uint64_t config; + char name[LTTNG_UST_SYM_NAME_LEN]; +} LTTNG_PACKED; + #define LTTNG_UST_CONTEXT_PADDING1 16 -#define LTTNG_UST_CONTEXT_PADDING2 LTTNG_UST_SYM_NAME_LEN + 32 +#define LTTNG_UST_CONTEXT_PADDING2 (LTTNG_UST_SYM_NAME_LEN + 32) struct lttng_ust_context { enum lttng_ust_context_type ctx; char padding[LTTNG_UST_CONTEXT_PADDING1]; union { + struct lttng_ust_perf_counter_ctx perf_counter; char padding[LTTNG_UST_CONTEXT_PADDING2]; } u; } LTTNG_PACKED; @@ -139,9 +164,9 @@ struct lttng_ust_context { /* * Tracer channel attributes. */ -#define LTTNG_UST_CHANNEL_ATTR_PADDING LTTNG_UST_SYM_NAME_LEN + 32 +#define LTTNG_UST_CHANNEL_ATTR_PADDING (LTTNG_UST_SYM_NAME_LEN + 32) struct lttng_ust_channel_attr { - uint64_t subbuf_size; /* bytes */ + uint64_t subbuf_size; /* bytes, power of 2 */ uint64_t num_subbuf; /* power of 2 */ int overwrite; /* 1: overwrite, 0: discard */ unsigned int switch_timer_interval; /* usec */ @@ -157,13 +182,35 @@ struct lttng_ust_tracepoint_iter { char padding[LTTNG_UST_TRACEPOINT_ITER_PADDING]; } LTTNG_PACKED; -#define LTTNG_UST_OBJECT_DATA_PADDING LTTNG_UST_SYM_NAME_LEN + 32 +enum lttng_ust_object_type { + LTTNG_UST_OBJECT_TYPE_UNKNOWN = -1, + LTTNG_UST_OBJECT_TYPE_CHANNEL = 0, + LTTNG_UST_OBJECT_TYPE_STREAM = 1, + LTTNG_UST_OBJECT_TYPE_EVENT = 2, + LTTNG_UST_OBJECT_TYPE_CONTEXT = 3, +}; + +#define LTTNG_UST_OBJECT_DATA_PADDING1 32 +#define LTTNG_UST_OBJECT_DATA_PADDING2 (LTTNG_UST_SYM_NAME_LEN + 32) + struct lttng_ust_object_data { - uint64_t memory_map_size; + enum lttng_ust_object_type type; int handle; - int shm_fd; - int wait_fd; - char padding[LTTNG_UST_OBJECT_DATA_PADDING]; + uint64_t size; + char padding1[LTTNG_UST_OBJECT_DATA_PADDING1]; + union { + struct { + void *data; + enum lttng_ust_chan_type type; + int wakeup_fd; + } channel; + struct { + int shm_fd; + int wakeup_fd; + uint32_t stream_nr; + } stream; + char padding2[LTTNG_UST_OBJECT_DATA_PADDING2]; + } u; } LTTNG_PACKED; enum lttng_ust_calibrate_type { @@ -171,7 +218,7 @@ enum lttng_ust_calibrate_type { }; #define LTTNG_UST_CALIBRATE_PADDING1 16 -#define LTTNG_UST_CALIBRATE_PADDING2 LTTNG_UST_SYM_NAME_LEN + 32 +#define LTTNG_UST_CALIBRATE_PADDING2 (LTTNG_UST_SYM_NAME_LEN + 32) struct lttng_ust_calibrate { enum lttng_ust_calibrate_type type; /* type (input) */ char padding[LTTNG_UST_CALIBRATE_PADDING1]; @@ -191,6 +238,13 @@ struct lttng_ust_filter_bytecode { char data[0]; } LTTNG_PACKED; +#define LTTNG_UST_EXCLUSION_PADDING 32 +struct lttng_ust_event_exclusion { + uint32_t count; + char padding[LTTNG_UST_EXCLUSION_PADDING]; + char names[LTTNG_UST_SYM_NAME_LEN][0]; +} LTTNG_PACKED; + #define _UST_CMD(minor) (minor) #define _UST_CMDR(minor, type) (minor) #define _UST_CMDW(minor, type) (minor) @@ -210,8 +264,6 @@ struct lttng_ust_filter_bytecode { #define LTTNG_UST_TRACEPOINT_FIELD_LIST _UST_CMD(0x45) /* Session FD commands */ -#define LTTNG_UST_METADATA \ - _UST_CMDW(0x50, struct lttng_ust_channel) #define LTTNG_UST_CHANNEL \ _UST_CMDW(0x51, struct lttng_ust_channel) #define LTTNG_UST_SESSION_START _UST_CMD(0x52) @@ -245,14 +297,12 @@ struct lttng_ust_obj; union ust_args { struct { - int *shm_fd; - int *wait_fd; - uint64_t *memory_map_size; + void *chan_data; + int wakeup_fd; } channel; struct { - int *shm_fd; - int *wait_fd; - uint64_t *memory_map_size; + int shm_fd; + int wakeup_fd; } stream; struct { struct lttng_ust_field_iter entry; @@ -269,7 +319,7 @@ struct lttng_ust_objd_ops { int lttng_abi_create_root_handle(void); const struct lttng_ust_objd_ops *objd_ops(int id); -int lttng_ust_objd_unref(int id); +int lttng_ust_objd_unref(int id, int is_owner); void lttng_ust_abi_exit(void); void lttng_ust_events_exit(void);