X-Git-Url: http://git.efficios.com/?a=blobdiff_plain;f=src%2Fbin%2Flttng-sessiond%2Ftrace-kernel.h;h=35e054f91ac8d2810a81852c40be2595b19ab62c;hb=refs%2Fheads%2Fsow-2020-0002-rev2;hp=3210d4b33bd58418f221257b9d39542479226ed3;hpb=d40f035921a2d3be652d31bdcc250db521f96209;p=lttng-tools.git diff --git a/src/bin/lttng-sessiond/trace-kernel.h b/src/bin/lttng-sessiond/trace-kernel.h index 3210d4b33..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 { @@ -42,6 +34,11 @@ 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; @@ -57,7 +54,41 @@ struct ltt_kernel_event { struct lttng_kernel_event *event; struct cds_list_head list; char *filter_expression; - struct lttng_filter_bytecode *filter; + 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 */ @@ -78,6 +109,20 @@ struct ltt_kernel_channel { 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; @@ -104,9 +149,11 @@ 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; 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; @@ -119,6 +166,16 @@ struct ltt_kernel_session { 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; }; /* @@ -128,11 +185,15 @@ struct ltt_kernel_event *trace_kernel_get_event_by_name( char *name, struct ltt_kernel_channel *channel, enum lttng_event_type type); struct ltt_kernel_event *trace_kernel_find_event( - char *name, struct ltt_kernel_channel *channel, + struct ltt_kernel_event_list *events_list, + uint64_t tracer_token, char *name, enum lttng_event_type type, - struct lttng_filter_bytecode *filter); + 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. @@ -140,15 +201,28 @@ struct ltt_kernel_channel *trace_kernel_get_channel_by_name( struct ltt_kernel_session *trace_kernel_create_session(void); struct ltt_kernel_channel *trace_kernel_create_channel( struct lttng_channel *chan); -struct ltt_kernel_event *trace_kernel_create_event(struct lttng_event *ev, - char *filter_expression, struct lttng_filter_bytecode *filter); +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 @@ -157,8 +231,13 @@ struct ltt_kernel_context *trace_kernel_copy_context( 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 */