X-Git-Url: http://git.efficios.com/?p=lttng-tools.git;a=blobdiff_plain;f=src%2Fbin%2Flttng-sessiond%2Ftrace-kernel.h;h=35e054f91ac8d2810a81852c40be2595b19ab62c;hp=ed5b3318921248250f135806e8450f3bf040f790;hb=refs%2Fheads%2Fsow-2020-0002-rev3;hpb=9b6c7ec5aebd1b1e3610ea54bbd0d6d4e9efaa82 diff --git a/src/bin/lttng-sessiond/trace-kernel.h b/src/bin/lttng-sessiond/trace-kernel.h index ed5b33189..35e054f91 100644 --- a/src/bin/lttng-sessiond/trace-kernel.h +++ b/src/bin/lttng-sessiond/trace-kernel.h @@ -1,18 +1,8 @@ /* - * Copyright (C) 2011 - David Goulet + * Copyright (C) 2011 David Goulet * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License, version 2 only, - * as published by the Free Software Foundation. + * SPDX-License-Identifier: GPL-2.0-only * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License along - * with this program; if not, write to the Free Software Foundation, Inc., - * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. */ #ifndef _LTT_TRACE_KERNEL_H @@ -21,11 +11,13 @@ #include #include +#include #include #include #include #include "consumer.h" +#include "tracker.h" /* Kernel event list */ struct ltt_kernel_event_list { @@ -42,39 +34,99 @@ struct ltt_kernel_channel_list { struct cds_list_head head; }; +/* map list */ +struct ltt_kernel_map_list { + struct cds_list_head head; +}; + +struct ltt_kernel_context { + struct lttng_kernel_context ctx; + struct cds_list_head list; + /* Indicates whether or not the context is in a list. */ + bool in_list; +}; + /* Kernel event */ struct ltt_kernel_event { int fd; int enabled; - /* - * TODO: need internal representation to support more than a - * single context. - */ - struct lttng_kernel_context *ctx; + enum lttng_event_type type; struct lttng_kernel_event *event; struct cds_list_head list; + char *filter_expression; + struct lttng_bytecode *filter; + struct lttng_userspace_probe_location *userspace_probe_location; +}; + +/* Kernel event notifier */ +struct ltt_kernel_event_notifier_rule { + int fd; + uint64_t error_counter_index; + int enabled; + enum lttng_event_type type; + struct lttng_trigger *trigger; + uint64_t token; + const struct lttng_bytecode *filter; + struct lttng_userspace_probe_location *userspace_probe_location; + struct cds_lfht_node ht_node; + /* call_rcu delayed reclaim. */ + struct rcu_head rcu_node; +}; + +/* Kernel event counter */ +struct ltt_kernel_event_counter { + int fd; + int enabled; + uint64_t action_tracer_token; + struct lttng_kernel_event *event; + struct lttng_event_rule *event_rule; + const struct lttng_bytecode *filter; + struct lttng_userspace_probe_location *userspace_probe_location; + struct cds_list_head list; + struct lttng_ht_node_u64 ht_node; + + /* refcounted */ + struct lttng_map_key *key; + /* call_rcu delayed reclaim. */ + struct rcu_head rcu_node; }; /* Kernel channel */ struct ltt_kernel_channel { int fd; + uint64_t key; /* Key to reference this channel with the consumer. */ int enabled; unsigned int stream_count; unsigned int event_count; - /* - * TODO: need internal representation to support more than a - * single context. - */ - struct lttng_kernel_context *ctx; + bool published_to_notification_thread; + struct cds_list_head ctx_list; struct lttng_channel *channel; struct ltt_kernel_event_list events_list; struct ltt_kernel_stream_list stream_list; struct cds_list_head list; + /* Session pointer which has a reference to this object. */ + struct ltt_kernel_session *session; + bool sent_to_consumer; +}; + +/* Kernel map */ +struct ltt_kernel_map { + int fd; + uint64_t key; /* Key to reference this map with the notification thread. */ + int enabled; + unsigned int event_count; + struct lttng_map *map; + struct lttng_kernel_counter_conf counter_conf; + struct lttng_ht *event_counters_ht; + struct cds_list_head list; + /* Session pointer which has a reference to this object. */ + struct ltt_kernel_session *session; }; /* Metadata */ struct ltt_kernel_metadata { int fd; + uint64_t key; /* Key to reference this channel with the consumer. */ struct lttng_channel *conf; }; @@ -82,8 +134,12 @@ struct ltt_kernel_metadata { struct ltt_kernel_stream { int fd; int state; + int cpu; + bool sent_to_consumer; /* Format is %s_%d respectively channel name and CPU number. */ char name[DEFAULT_STREAM_NAME_LEN]; + uint64_t tracefile_size; + uint64_t tracefile_count; struct cds_list_head list; }; @@ -93,44 +149,80 @@ struct ltt_kernel_session { int metadata_stream_fd; int consumer_fds_sent; unsigned int channel_count; + unsigned int map_count; unsigned int stream_count_global; - char *trace_path; struct ltt_kernel_metadata *metadata; struct ltt_kernel_channel_list channel_list; + struct ltt_kernel_map_list map_list; /* UID/GID of the user owning the session */ uid_t uid; gid_t gid; - /* - * Two consumer_output object are needed where one is needed for the - * current output object and the second one is the temporary object used to - * store URI being set by the lttng_set_consumer_uri call. Once - * lttng_enable_consumer is called, the two pointers are swapped. - */ struct consumer_output *consumer; - struct consumer_output *tmp_consumer; /* Tracing session id */ - unsigned int id; - /* Session is started and active */ - unsigned int started; + uint64_t id; + /* Session is active or not meaning it has been started or stopped. */ + unsigned int active:1; + /* Tell or not if the session has to output the traces. */ + unsigned int output_traces; + unsigned int snapshot_mode; + unsigned int has_non_default_channel; + bool is_live_session; + /* Current trace chunk of the ltt_session. */ + struct lttng_trace_chunk *current_trace_chunk; + /* Tracker lists */ + struct process_attr_tracker *tracker_pid; + struct process_attr_tracker *tracker_vpid; + struct process_attr_tracker *tracker_uid; + struct process_attr_tracker *tracker_vuid; + struct process_attr_tracker *tracker_gid; + struct process_attr_tracker *tracker_vgid; }; /* * Lookup functions. NULL is returned if not found. */ struct ltt_kernel_event *trace_kernel_get_event_by_name( - char *name, struct ltt_kernel_channel *channel); + char *name, struct ltt_kernel_channel *channel, + enum lttng_event_type type); +struct ltt_kernel_event *trace_kernel_find_event( + struct ltt_kernel_event_list *events_list, + uint64_t tracer_token, char *name, + enum lttng_event_type type, + struct lttng_bytecode *filter); struct ltt_kernel_channel *trace_kernel_get_channel_by_name( - char *name, struct ltt_kernel_session *session); + const char *name, struct ltt_kernel_session *session); + +struct ltt_kernel_map *trace_kernel_get_map_by_name( + const char *name, struct ltt_kernel_session *session); /* * Create functions malloc() the data structure. */ -struct ltt_kernel_session *trace_kernel_create_session(char *path); -struct ltt_kernel_channel *trace_kernel_create_channel(struct lttng_channel *chan, char *path); -struct ltt_kernel_event *trace_kernel_create_event(struct lttng_event *ev); +struct ltt_kernel_session *trace_kernel_create_session(void); +struct ltt_kernel_channel *trace_kernel_create_channel( + struct lttng_channel *chan); +struct ltt_kernel_map *trace_kernel_create_map(const struct lttng_map *map); +enum lttng_error_code trace_kernel_create_event(struct lttng_event *ev, + char *filter_expression, struct lttng_bytecode *filter, + struct ltt_kernel_event **kernel_event); struct ltt_kernel_metadata *trace_kernel_create_metadata(void); struct ltt_kernel_stream *trace_kernel_create_stream(const char *name, unsigned int count); +struct ltt_kernel_context *trace_kernel_create_context( + struct lttng_kernel_context *ctx); +enum lttng_error_code trace_kernel_create_event_notifier_rule( + struct lttng_trigger *trigger, + uint64_t token, + uint64_t error_counter_index, + struct ltt_kernel_event_notifier_rule **event_notifier_rule); +struct ltt_kernel_context *trace_kernel_copy_context( + struct ltt_kernel_context *ctx); +enum lttng_error_code trace_kernel_init_event_notifier_from_event_rule( + const struct lttng_event_rule *rule, + struct lttng_kernel_event_notifier *kernel_event_notifier); +enum lttng_error_code trace_kernel_init_event_counter_from_event_rule( + const struct lttng_event_rule *rule, + struct lttng_kernel_counter_event *kernel_counter_event); /* * Destroy functions free() the data structure and remove from linked list if @@ -139,7 +231,13 @@ struct ltt_kernel_stream *trace_kernel_create_stream(const char *name, void trace_kernel_destroy_session(struct ltt_kernel_session *session); void trace_kernel_destroy_metadata(struct ltt_kernel_metadata *metadata); void trace_kernel_destroy_channel(struct ltt_kernel_channel *channel); +void trace_kernel_destroy_map(struct ltt_kernel_map *map); void trace_kernel_destroy_event(struct ltt_kernel_event *event); void trace_kernel_destroy_stream(struct ltt_kernel_stream *stream); +void trace_kernel_destroy_context(struct ltt_kernel_context *ctx); +void trace_kernel_destroy_event_notifier_rule(struct ltt_kernel_event_notifier_rule *rule); +void trace_kernel_destroy_event_counter( + struct ltt_kernel_event_counter *event_counter); +void trace_kernel_free_session(struct ltt_kernel_session *session); #endif /* _LTT_TRACE_KERNEL_H */