X-Git-Url: http://git.lttng.org./?a=blobdiff_plain;f=ltt-tracer.h;h=91a868dc277cd88ff7361248cea10a1e6abddfcc;hb=7b745a9662e0552f2715391147bc994ad17ae29c;hp=aa9db46a88a665fe1a91df032bf7c7fb1774c8f8;hpb=9115fbdc0d5b0d69b32d3d4d924624fbbe22638e;p=lttng-modules.git diff --git a/ltt-tracer.h b/ltt-tracer.h index aa9db46a..91a868dc 100644 --- a/ltt-tracer.h +++ b/ltt-tracer.h @@ -1,14 +1,16 @@ +#ifndef _LTT_TRACER_H +#define _LTT_TRACER_H + /* - * Copyright (C) 2005,2006,2008 Mathieu Desnoyers (mathieu.desnoyers@polymtl.ca) + * ltt-tracer.h + * + * Copyright (C) 2005-2011 Mathieu Desnoyers * * This contains the definitions for the Linux Trace Toolkit tracer. * * Dual LGPL v2.1/GPL v2 license. */ -#ifndef _LTT_TRACER_H -#define _LTT_TRACER_H - #include #include #include @@ -23,79 +25,16 @@ #include "ltt-tracer-core.h" #include "ltt-events.h" +#define LTTNG_VERSION 0 +#define LTTNG_PATCHLEVEL 9 +#define LTTNG_SUBLEVEL 1 + #ifndef CHAR_BIT #define CHAR_BIT 8 #endif /* Number of bytes to log with a read/write event */ #define LTT_LOG_RW_SIZE 32L - -/* Maximum number of callbacks per marker */ -#define LTT_NR_CALLBACKS 10 - -struct ltt_serialize_closure; - -/* Serialization callback */ -typedef size_t (*ltt_serialize_cb)(struct lib_ring_buffer *buf, - size_t buf_offset, - struct ltt_serialize_closure *closure, - void *serialize_private, - unsigned int stack_pos_ctx, - int *largest_align, - const char *fmt, va_list *args); - -struct ltt_serialize_closure { - ltt_serialize_cb *callbacks; - long cb_args[LTT_NR_CALLBACKS]; - unsigned int cb_idx; -}; - -size_t ltt_serialize_data(struct lib_ring_buffer *buf, size_t buf_offset, - struct ltt_serialize_closure *closure, - void *serialize_private, unsigned int stack_pos_ctx, - int *largest_align, const char *fmt, va_list *args); - -enum ltt_channels { - LTT_CHANNEL_METADATA, - LTT_CHANNEL_FD_STATE, - LTT_CHANNEL_GLOBAL_STATE, - LTT_CHANNEL_IRQ_STATE, - LTT_CHANNEL_MODULE_STATE, - LTT_CHANNEL_NETIF_STATE, - LTT_CHANNEL_SOFTIRQ_STATE, - LTT_CHANNEL_SWAP_STATE, - LTT_CHANNEL_SYSCALL_STATE, - LTT_CHANNEL_TASK_STATE, - LTT_CHANNEL_VM_STATE, - LTT_CHANNEL_FS, - LTT_CHANNEL_INPUT, - LTT_CHANNEL_IPC, - LTT_CHANNEL_KERNEL, - LTT_CHANNEL_MM, - LTT_CHANNEL_RCU, - LTT_CHANNEL_DEFAULT, -}; - -/* - * Hardcoded event headers - * - * event header for a trace with active heartbeat : 27 bits timestamps - * - * headers are 32-bits aligned. In order to insure such alignment, a dynamic per - * trace alignment value must be done. - * - * Remember that the C compiler does align each member on the boundary - * equivalent to their own size. - * - * As relay subbuffers are aligned on pages, we are sure that they are 4 and 8 - * bytes aligned, so the buffer header and trace header are aligned. - * - * Event headers are aligned depending on the trace alignment option. - * - * Note using C structure bitfields for cross-endianness and portability - * concerns. - */ - #define LTT_MAX_SMALL_SIZE 0xFFFFU #ifdef RING_BUFFER_ALIGN @@ -116,50 +55,7 @@ enum ltt_channels { */ #define LTTNG_METADATA_TIMEOUT_MSEC 10000 -/* - * Size reserved for high priority events (interrupts, NMI, BH) at the end of a - * nearly full buffer. User space won't use this last amount of space when in - * blocking mode. This space also includes the event header that would be - * written by this user space event. - */ -#define LTT_RESERVE_CRITICAL 4096 - -/* Register and unregister function pointers */ - -enum ltt_module_function { - LTT_FUNCTION_RUN_FILTER, - LTT_FUNCTION_FILTER_CONTROL, - LTT_FUNCTION_STATEDUMP -}; - -extern int ltt_module_register(enum ltt_module_function name, void *function, - struct module *owner); -extern void ltt_module_unregister(enum ltt_module_function name); - -/* Exported control function */ - -void ltt_core_register(int (*function)(u8, void *)); - -void ltt_core_unregister(void); - -extern -void ltt_statedump_register_kprobes_dump(void (*callback)(void *call_data)); -extern -void ltt_statedump_unregister_kprobes_dump(void (*callback)(void *call_data)); - -extern void ltt_dump_softirq_vec(void *call_data); - -#ifdef CONFIG_HAVE_LTT_DUMP_TABLES -extern void ltt_dump_sys_call_table(void *call_data); -extern void ltt_dump_idt_table(void *call_data); -#else -static inline void ltt_dump_sys_call_table(void *call_data) -{ -} - -static inline void ltt_dump_idt_table(void *call_data) -{ -} -#endif +#define LTT_RFLAG_EXTENDED RING_BUFFER_RFLAG_END +#define LTT_RFLAG_END (LTT_RFLAG_EXTENDED << 1) #endif /* _LTT_TRACER_H */