X-Git-Url: http://git.lttng.org/?a=blobdiff_plain;f=lttng-events.h;h=38bf2ebaaaa47ca3677b1ef35fb18cfbd8d59b6f;hb=10e44b65cb40322b6e47c4414c33d3c554687556;hp=9e05e2f9a56b044c8c690fbbc2ac75a3889d2c58;hpb=601252cfa07fa29f15c769fe3f4cf4419311d6f9;p=lttng-modules.git diff --git a/lttng-events.h b/lttng-events.h index 9e05e2f9..38bf2eba 100644 --- a/lttng-events.h +++ b/lttng-events.h @@ -1,33 +1,22 @@ -#ifndef _LTTNG_EVENTS_H -#define _LTTNG_EVENTS_H - -/* +/* SPDX-License-Identifier: (GPL-2.0 or LGPL-2.1) + * * lttng-events.h * * Holds LTTng per-session event registry. * * Copyright (C) 2010-2012 Mathieu Desnoyers - * - * This library is free software; you can redistribute it and/or - * modify it under the terms of the GNU Lesser General Public - * License as published by the Free Software Foundation; only - * version 2.1 of the License. - * - * This library 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 - * Lesser General Public License for more details. - * - * You should have received a copy of the GNU Lesser General Public - * License along with this library; if not, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ -#include +#ifndef _LTTNG_EVENTS_H +#define _LTTNG_EVENTS_H + +#include #include #include #include -#include +#include +#include +#include #include #include #include @@ -54,6 +43,8 @@ enum abstract_types { atype_array_compound, /* Array of compound types. */ atype_sequence_compound, /* Sequence of compound types. */ atype_variant, + atype_array_bitfield, + atype_sequence_bitfield, NR_ABSTRACT_TYPES, }; @@ -77,6 +68,9 @@ struct lttng_enum_value { struct lttng_enum_entry { struct lttng_enum_value start, end; /* start and end are inclusive */ const char *string; + struct { + unsigned int is_auto:1; + } options; }; #define __type_integer(_type, _size, _alignment, _signedness, \ @@ -181,8 +175,13 @@ union lttng_ctx_value { * lttng_ctx_field because cpu hotplug needs fixed-location addresses. */ struct lttng_perf_counter_field { +#if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(4,10,0)) + struct lttng_cpuhp_node cpuhp_prepare; + struct lttng_cpuhp_node cpuhp_online; +#else struct notifier_block nb; int hp_enable; +#endif struct perf_event_attr *attr; struct perf_event **e; /* per-cpu array */ }; @@ -195,6 +194,9 @@ struct lttng_probe_ctx { struct lttng_ctx_field { struct lttng_event_field event_field; size_t (*get_size)(size_t offset); + size_t (*get_size_arg)(size_t offset, struct lttng_ctx_field *field, + struct lib_ring_buffer_ctx *ctx, + struct lttng_channel *chan); void (*record)(struct lttng_ctx_field *field, struct lib_ring_buffer_ctx *ctx, struct lttng_channel *chan); @@ -205,6 +207,12 @@ struct lttng_ctx_field { struct lttng_perf_counter_field *perf_counter; } u; void (*destroy)(struct lttng_ctx_field *field); + /* + * Private data to keep state between get_size and record. + * User must perform its own synchronization to protect against + * concurrent and reentrant contexts. + */ + void *priv; }; struct lttng_ctx { @@ -266,6 +274,7 @@ struct lttng_bytecode_runtime { const char *filter_stack_data); int link_failed; struct list_head node; /* list of bytecode runtime in event */ + struct lttng_event *event; }; /* @@ -276,6 +285,23 @@ struct lttng_enabler_ref { struct lttng_enabler *ref; /* backward ref */ }; +struct lttng_uprobe_handler { + struct lttng_event *event; + loff_t offset; + struct uprobe_consumer up_consumer; + struct list_head node; +}; + +enum lttng_syscall_entryexit { + LTTNG_SYSCALL_ENTRY, + LTTNG_SYSCALL_EXIT, +}; + +enum lttng_syscall_abi { + LTTNG_SYSCALL_ABI_NATIVE, + LTTNG_SYSCALL_ABI_COMPAT, +}; + /* * lttng_event structure is referred to by the tracing fast path. It must be * kept small. @@ -299,8 +325,14 @@ struct lttng_event { char *symbol_name; } kretprobe; struct { - char *symbol_name; - } ftrace; + struct inode *inode; + struct list_head head; + } uprobe; + struct { + char *syscall_name; + enum lttng_syscall_entryexit entryexit; + enum lttng_syscall_abi abi; + } syscall; } u; struct list_head list; /* Event list in session */ unsigned int metadata_dumped:1; @@ -315,7 +347,7 @@ struct lttng_event { }; enum lttng_enabler_type { - LTTNG_ENABLER_WILDCARD, + LTTNG_ENABLER_STAR_GLOB, LTTNG_ENABLER_NAME, }; @@ -440,10 +472,10 @@ struct lttng_channel { struct lttng_syscall_filter *sc_filter; int header_type; /* 0: unset, 1: compact, 2: large */ enum channel_type channel_type; + int syscall_all; unsigned int metadata_dumped:1, sys_enter_registered:1, sys_exit_registered:1, - syscall_all:1, tstate:1; /* Transient enable state */ }; @@ -457,6 +489,7 @@ struct lttng_metadata_stream { struct list_head list; /* Stream list */ struct lttng_transport *transport; uint64_t version; /* Current version of the metadata cache */ + bool coherent; /* Stream in a coherent state */ }; #define LTTNG_DYNAMIC_LEN_STACK_SIZE 128 @@ -501,12 +534,15 @@ struct lttng_session { struct list_head enablers_head; /* Hash table of events */ struct lttng_event_ht events_ht; + char name[LTTNG_KERNEL_SESSION_NAME_LEN]; + char creation_time[LTTNG_KERNEL_SESSION_CREATION_TIME_ISO8601_LEN]; }; struct lttng_metadata_cache { char *data; /* Metadata cache */ unsigned int cache_alloc; /* Metadata allocated size (bytes) */ unsigned int metadata_written; /* Number of bytes written in metadata cache */ + atomic_t producing; /* Metadata being produced (incomplete) */ struct kref refcount; /* Metadata cache usage */ struct list_head metadata_stream; /* Metadata stream list */ uuid_le uuid; /* Trace session unique ID (copy) */ @@ -587,7 +623,7 @@ int lttng_probes_init(void); void lttng_probes_exit(void); int lttng_metadata_output_channel(struct lttng_metadata_stream *stream, - struct channel *chan); + struct channel *chan, bool *coherent); int lttng_pid_tracker_get_node_pid(const struct lttng_pid_hash_node *node); struct lttng_pid_tracker *lttng_pid_tracker_create(void); @@ -607,10 +643,11 @@ void lttng_clock_unref(void); #if defined(CONFIG_HAVE_SYSCALL_TRACEPOINTS) int lttng_syscalls_register(struct lttng_channel *chan, void *filter); int lttng_syscalls_unregister(struct lttng_channel *chan); +int lttng_syscalls_destroy(struct lttng_channel *chan); int lttng_syscall_filter_enable(struct lttng_channel *chan, - const char *name); + struct lttng_event *event); int lttng_syscall_filter_disable(struct lttng_channel *chan, - const char *name); + struct lttng_event *event); long lttng_channel_syscall_mask(struct lttng_channel *channel, struct lttng_kernel_syscall_mask __user *usyscall_mask); #else @@ -624,14 +661,19 @@ static inline int lttng_syscalls_unregister(struct lttng_channel *chan) return 0; } +static inline int lttng_syscalls_destroy(struct lttng_channel *chan) +{ + return 0; +} + static inline int lttng_syscall_filter_enable(struct lttng_channel *chan, - const char *name) + struct lttng_event *event); { return -ENOSYS; } static inline int lttng_syscall_filter_disable(struct lttng_channel *chan, - const char *name) + struct lttng_event *event); { return -ENOSYS; } @@ -693,11 +735,18 @@ int lttng_add_migratable_to_ctx(struct lttng_ctx **ctx) return -ENOSYS; } #endif -#if defined(CONFIG_PERF_EVENTS) && (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,33)) + +int lttng_add_callstack_to_ctx(struct lttng_ctx **ctx, int type); + +#if defined(CONFIG_PERF_EVENTS) && (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(2,6,33)) int lttng_add_perf_counter_to_ctx(uint32_t type, uint64_t config, const char *name, struct lttng_ctx **ctx); +int lttng_cpuhp_perf_counter_online(unsigned int cpu, + struct lttng_cpuhp_node *node); +int lttng_cpuhp_perf_counter_dead(unsigned int cpu, + struct lttng_cpuhp_node *node); #else static inline int lttng_add_perf_counter_to_ctx(uint32_t type, @@ -707,6 +756,18 @@ int lttng_add_perf_counter_to_ctx(uint32_t type, { return -ENOSYS; } +static inline +int lttng_cpuhp_perf_counter_online(unsigned int cpu, + struct lttng_cpuhp_node *node) +{ + return 0; +} +static inline +int lttng_cpuhp_perf_counter_dead(unsigned int cpu, + struct lttng_cpuhp_node *node) +{ + return 0; +} #endif int lttng_logger_init(void); @@ -744,6 +805,42 @@ void lttng_kprobes_destroy_private(struct lttng_event *event) } #endif +int lttng_event_add_callsite(struct lttng_event *event, + struct lttng_kernel_event_callsite *callsite); + +#ifdef CONFIG_UPROBES +int lttng_uprobes_register(const char *name, + int fd, struct lttng_event *event); +int lttng_uprobes_add_callsite(struct lttng_event *event, + struct lttng_kernel_event_callsite *callsite); +void lttng_uprobes_unregister(struct lttng_event *event); +void lttng_uprobes_destroy_private(struct lttng_event *event); +#else +static inline +int lttng_uprobes_register(const char *name, + int fd, struct lttng_event *event) +{ + return -ENOSYS; +} + +static inline +int lttng_uprobes_add_callsite(struct lttng_event *event, + struct lttng_kernel_event_callsite *callsite) +{ + return -ENOSYS; +} + +static inline +void lttng_uprobes_unregister(struct lttng_event *event) +{ +} + +static inline +void lttng_uprobes_destroy_private(struct lttng_event *event) +{ +} +#endif + #ifdef CONFIG_KRETPROBES int lttng_kretprobes_register(const char *name, const char *symbol_name, @@ -785,38 +882,12 @@ int lttng_kretprobes_event_enable_state(struct lttng_event *event, } #endif -#ifdef CONFIG_DYNAMIC_FTRACE -int lttng_ftrace_register(const char *name, - const char *symbol_name, - struct lttng_event *event); -void lttng_ftrace_unregister(struct lttng_event *event); -void lttng_ftrace_destroy_private(struct lttng_event *event); -#else -static inline -int lttng_ftrace_register(const char *name, - const char *symbol_name, - struct lttng_event *event) -{ - return -ENOSYS; -} - -static inline -void lttng_ftrace_unregister(struct lttng_event *event) -{ -} - -static inline -void lttng_ftrace_destroy_private(struct lttng_event *event) -{ -} -#endif - int lttng_calibrate(struct lttng_kernel_calibrate *calibrate); extern const struct file_operations lttng_tracepoint_list_fops; extern const struct file_operations lttng_syscall_list_fops; -#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,35)) +#if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(2,6,35)) #define TRACEPOINT_HAS_DATA_ARG #endif