38847db974
Libtraceevent APIs for printing various trace events information are complicated, there are complex extra parameters. To control the way event information is printed, the user should call a set of functions in a specific sequence. These APIs are reimplemented to provide a more simple interface for printing event information. Removed APIs: tep_print_event_task() tep_print_event_time() tep_print_event_data() tep_event_info() tep_is_latency_format() tep_set_latency_format() tep_data_latency_format() tep_set_print_raw() A new API for printing event information is introduced: void tep_print_event(struct tep_handle *tep, struct trace_seq *s, struct tep_record *record, const char *fmt, ...); where "fmt" is a printf-like format string, followed by the event fields to be printed. Supported fields: TEP_PRINT_PID, "%d" - event PID TEP_PRINT_CPU, "%d" - event CPU TEP_PRINT_COMM, "%s" - event command string TEP_PRINT_NAME, "%s" - event name TEP_PRINT_LATENCY, "%s" - event latency TEP_PRINT_TIME, %d - event time stamp. A divisor and precision can be specified as part of this format string: "%precision.divisord". Example: "%3.1000d" - divide the time by 1000 and print the first 3 digits before the dot. Thus, the time stamp "123456000" will be printed as "123.456" TEP_PRINT_INFO, "%s" - event information. TEP_PRINT_INFO_RAW, "%s" - event information, in raw format. Example: tep_print_event(tep, s, record, "%16s-%-5d [%03d] %s %6.1000d %s %s", TEP_PRINT_COMM, TEP_PRINT_PID, TEP_PRINT_CPU, TEP_PRINT_LATENCY, TEP_PRINT_TIME, TEP_PRINT_NAME, TEP_PRINT_INFO); Output: ls-11314 [005] d.h. 185207.366383 function __wake_up Signed-off-by: Tzvetomir Stoyanov <tstoyanov@vmware.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: linux-trace-devel@vger.kernel.org Cc: Patrick McLean <chutzpah@gentoo.org> Link: http://lore.kernel.org/linux-trace-devel/20190801074959.22023-2-tz.stoyanov@gmail.com Link: http://lore.kernel.org/lkml/20190805204355.041132030@goodmis.org Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
96 lines
1.9 KiB
C
96 lines
1.9 KiB
C
// SPDX-License-Identifier: LGPL-2.1
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/*
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* Copyright (C) 2009, 2010 Red Hat Inc, Steven Rostedt <srostedt@redhat.com>
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*
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*/
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#ifndef _PARSE_EVENTS_INT_H
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#define _PARSE_EVENTS_INT_H
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struct tep_cmdline;
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struct cmdline_list;
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struct func_map;
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struct func_list;
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struct event_handler;
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struct func_resolver;
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struct tep_handle {
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int ref_count;
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int header_page_ts_offset;
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int header_page_ts_size;
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int header_page_size_offset;
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int header_page_size_size;
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int header_page_data_offset;
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int header_page_data_size;
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int header_page_overwrite;
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enum tep_endian file_bigendian;
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enum tep_endian host_bigendian;
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int old_format;
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int cpus;
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int long_size;
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int page_size;
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struct tep_cmdline *cmdlines;
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struct cmdline_list *cmdlist;
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int cmdline_count;
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struct func_map *func_map;
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struct func_resolver *func_resolver;
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struct func_list *funclist;
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unsigned int func_count;
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struct printk_map *printk_map;
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struct printk_list *printklist;
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unsigned int printk_count;
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struct tep_event **events;
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int nr_events;
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struct tep_event **sort_events;
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enum tep_event_sort_type last_type;
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int type_offset;
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int type_size;
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int pid_offset;
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int pid_size;
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int pc_offset;
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int pc_size;
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int flags_offset;
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int flags_size;
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int ld_offset;
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int ld_size;
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int test_filters;
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int flags;
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struct tep_format_field *bprint_ip_field;
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struct tep_format_field *bprint_fmt_field;
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struct tep_format_field *bprint_buf_field;
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struct event_handler *handlers;
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struct tep_function_handler *func_handlers;
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/* cache */
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struct tep_event *last_event;
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char *trace_clock;
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};
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void tep_free_event(struct tep_event *event);
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void tep_free_format_field(struct tep_format_field *field);
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unsigned short tep_data2host2(struct tep_handle *tep, unsigned short data);
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unsigned int tep_data2host4(struct tep_handle *tep, unsigned int data);
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unsigned long long tep_data2host8(struct tep_handle *tep, unsigned long long data);
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#endif /* _PARSE_EVENTS_INT_H */
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