Refactoring: struct lttng_channel

[lttng-modules.git] / include / lttng / events-internal.h

diff --git a/include/lttng/events-internal.h b/include/lttng/events-internal.h
index defea8405e255d6ca838882e966377ffeb7d8035..1108cf273ce342b7ec4d74658304d768b2e5f238 100644 (file)
--- a/include/lttng/events-internal.h
+++ b/include/lttng/events-internal.h
@@ -21,6 +21,11 @@ enum lttng_enabler_format_type {
        LTTNG_ENABLER_FORMAT_NAME,
 };
 
+enum channel_type {
+       PER_CPU_CHANNEL,
+       METADATA_CHANNEL,
+};
+
 /*
  * Objects in a linked-list of enablers, owned by an event.
  */
@@ -112,6 +117,44 @@ struct lttng_kernel_event_notifier_private {
 
 };
 
+struct lttng_kernel_channel_common_private {
+       struct lttng_kernel_channel_common *pub;
+
+       struct file *file;                      /* File associated to channel */
+       unsigned int sys_enter_registered:1,
+               sys_exit_registered:1,
+               tstate:1;                       /* Transient enable state */
+
+       struct hlist_head *sc_table;            /* for syscall tracing */
+       struct hlist_head *compat_sc_table;
+       struct hlist_head *sc_exit_table;       /* for syscall exit tracing */
+       struct hlist_head *compat_sc_exit_table;
+       struct hlist_head sc_unknown;           /* for unknown syscalls */
+       struct hlist_head sc_compat_unknown;
+       struct hlist_head sc_exit_unknown;
+       struct hlist_head compat_sc_exit_unknown;
+       struct lttng_syscall_filter *sc_filter;
+       int syscall_all_entry;
+       int syscall_all_exit;
+};
+
+struct lttng_kernel_channel_buffer_private {
+       struct lttng_kernel_channel_common_private parent;
+
+       struct lttng_kernel_channel_buffer *pub;
+
+       unsigned int id;                        /* Channel ID */
+       unsigned int free_event_id;             /* Next event ID to allocate */
+       int header_type;                        /* 0: unset, 1: compact, 2: large */
+
+       enum channel_type channel_type;
+       struct lttng_kernel_ctx *ctx;
+       struct channel *rb_chan;                /* Ring buffer channel */
+       unsigned int metadata_dumped:1;
+       struct list_head node;                  /* Channel list in session */
+       struct lttng_transport *transport;
+};
+
 enum lttng_kernel_bytecode_interpreter_ret {
        LTTNG_KERNEL_BYTECODE_INTERPRETER_ERROR = -1,
        LTTNG_KERNEL_BYTECODE_INTERPRETER_OK = 0,
@@ -177,7 +220,7 @@ struct lttng_enabler {
 struct lttng_event_enabler {
        struct lttng_enabler base;
        struct list_head node;  /* per-session list of enablers */
-       struct lttng_channel *chan;
+       struct lttng_kernel_channel_buffer *chan;
 };
 
 struct lttng_event_notifier_enabler {
@@ -223,7 +266,7 @@ struct lttng_kernel_ctx_field {
                        size_t offset);
        void (*record)(void *priv, struct lttng_kernel_probe_ctx *probe_ctx,
                        struct lttng_kernel_ring_buffer_ctx *ctx,
-                       struct lttng_channel *chan);
+                       struct lttng_kernel_channel_buffer *chan);
        void (*get_value)(void *priv, struct lttng_kernel_probe_ctx *probe_ctx,
                        struct lttng_ctx_value *value);
        void (*destroy)(void *priv);
@@ -729,7 +772,7 @@ int lttng_cpuhp_perf_counter_dead(unsigned int cpu,
 struct lttng_event_enabler *lttng_event_enabler_create(
                enum lttng_enabler_format_type format_type,
                struct lttng_kernel_abi_event *event_param,
-               struct lttng_channel *chan);
+               struct lttng_kernel_channel_buffer *chan);
 
 int lttng_event_enabler_enable(struct lttng_event_enabler *event_enabler);
 int lttng_event_enabler_disable(struct lttng_event_enabler *event_enabler);
@@ -762,16 +805,16 @@ void lttng_enabler_link_bytecode(const struct lttng_kernel_event_desc *event_des
 
 #if defined(CONFIG_HAVE_SYSCALL_TRACEPOINTS)
 int lttng_syscalls_register_event(struct lttng_event_enabler *event_enabler);
-int lttng_syscalls_unregister_channel(struct lttng_channel *chan);
-int lttng_syscalls_destroy_event(struct lttng_channel *chan);
+int lttng_syscalls_unregister_channel(struct lttng_kernel_channel_buffer *chan);
+int lttng_syscalls_destroy_event(struct lttng_kernel_channel_buffer *chan);
 int lttng_syscall_filter_enable_event(
-               struct lttng_channel *chan,
+               struct lttng_kernel_channel_buffer *chan,
                struct lttng_kernel_event_recorder *event);
 int lttng_syscall_filter_disable_event(
-               struct lttng_channel *chan,
+               struct lttng_kernel_channel_buffer *chan,
                struct lttng_kernel_event_recorder *event);
 
-long lttng_channel_syscall_mask(struct lttng_channel *channel,
+long lttng_channel_syscall_mask(struct lttng_kernel_channel_buffer *channel,
                struct lttng_kernel_abi_syscall_mask __user *usyscall_mask);
 
 int lttng_syscalls_register_event_notifier(
@@ -788,29 +831,29 @@ static inline int lttng_syscalls_register_event(
        return -ENOSYS;
 }
 
-static inline int lttng_syscalls_unregister_channel(struct lttng_channel *chan)
+static inline int lttng_syscalls_unregister_channel(struct lttng_kernel_channel_buffer *chan)
 {
        return 0;
 }
 
-static inline int lttng_syscalls_destroy(struct lttng_channel *chan)
+static inline int lttng_syscalls_destroy(struct lttng_kernel_channel_buffer *chan)
 {
        return 0;
 }
 
-static inline int lttng_syscall_filter_enable_event(struct lttng_channel *chan,
+static inline int lttng_syscall_filter_enable_event(struct lttng_kernel_channel_buffer *chan,
                struct lttng_kernel_event_recorder *event);
 {
        return -ENOSYS;
 }
 
-static inline int lttng_syscall_filter_disable_event(struct lttng_channel *chan,
+static inline int lttng_syscall_filter_disable_event(struct lttng_kernel_channel_buffer *chan,
                struct lttng_kernel_event_recorder *event);
 {
        return -ENOSYS;
 }
 
-static inline long lttng_channel_syscall_mask(struct lttng_channel *channel,
+static inline long lttng_channel_syscall_mask(struct lttng_kernel_channel_buffer *channel,
                struct lttng_kernel_syscall_mask __user *usyscall_mask)
 {
        return -ENOSYS;
@@ -1033,29 +1076,29 @@ int lttng_event_notifier_group_create_error_counter(
 void lttng_event_notifier_group_destroy(
                struct lttng_event_notifier_group *event_notifier_group);
 
-struct lttng_channel *lttng_channel_create(struct lttng_kernel_session *session,
+struct lttng_kernel_channel_buffer *lttng_channel_create(struct lttng_kernel_session *session,
                                       const char *transport_name,
                                       void *buf_addr,
                                       size_t subbuf_size, size_t num_subbuf,
                                       unsigned int switch_timer_interval,
                                       unsigned int read_timer_interval,
                                       enum channel_type channel_type);
-struct lttng_channel *lttng_global_channel_create(struct lttng_kernel_session *session,
+struct lttng_kernel_channel_buffer *lttng_global_channel_create(struct lttng_kernel_session *session,
                                       int overwrite, void *buf_addr,
                                       size_t subbuf_size, size_t num_subbuf,
                                       unsigned int switch_timer_interval,
                                       unsigned int read_timer_interval);
 
-void lttng_metadata_channel_destroy(struct lttng_channel *chan);
-struct lttng_kernel_event_recorder *lttng_kernel_event_recorder_create(struct lttng_channel *chan,
+void lttng_metadata_channel_destroy(struct lttng_kernel_channel_buffer *chan);
+struct lttng_kernel_event_recorder *lttng_kernel_event_recorder_create(struct lttng_kernel_channel_buffer *chan,
                                struct lttng_kernel_abi_event *event_param,
                                const struct lttng_kernel_event_desc *event_desc,
                                enum lttng_kernel_abi_instrumentation itype);
-struct lttng_kernel_event_recorder *_lttng_kernel_event_recorder_create(struct lttng_channel *chan,
+struct lttng_kernel_event_recorder *_lttng_kernel_event_recorder_create(struct lttng_kernel_channel_buffer *chan,
                                struct lttng_kernel_abi_event *event_param,
                                const struct lttng_kernel_event_desc *event_desc,
                                enum lttng_kernel_abi_instrumentation itype);
-struct lttng_kernel_event_recorder *lttng_event_compat_old_create(struct lttng_channel *chan,
+struct lttng_kernel_event_recorder *lttng_event_compat_old_create(struct lttng_kernel_channel_buffer *chan,
                struct lttng_kernel_abi_old_event *old_event_param,
                const struct lttng_kernel_event_desc *internal_desc);
 
@@ -1074,8 +1117,8 @@ struct lttng_kernel_event_notifier *_lttng_event_notifier_create(
                                struct lttng_kernel_abi_event_notifier *event_notifier_param,
                                enum lttng_kernel_abi_instrumentation itype);
 
-int lttng_channel_enable(struct lttng_channel *channel);
-int lttng_channel_disable(struct lttng_channel *channel);
+int lttng_channel_enable(struct lttng_kernel_channel_buffer *channel);
+int lttng_channel_disable(struct lttng_kernel_channel_buffer *channel);
 int lttng_event_enable(struct lttng_kernel_event_common *event);
 int lttng_event_disable(struct lttng_kernel_event_common *event);