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c61e52ee70
kernel_optimize_test/tools/perf/util
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Frederic Weisbecker c61e52ee70 perf: Generalize perf lock's sample event reordering to the session layer 
The sample events recorded by perf record are not time ordered
because we have one buffer per cpu for each event (even demultiplexed
per task/per cpu for task bound events). But when we read trace events
we want them to be ordered by time because many state machines are
involved.

There are currently two ways perf tools deal with that:

- use -M to multiplex every buffers (perf sched, perf kmem)
  But this creates a lot of contention in SMP machines on
  record time.

- use a post-processing time reordering (perf timechart, perf lock)
  The reordering used by timechart is simple but doesn't scale well
  with huge flow of events, in terms of performance and memory use
  (unusable with perf lock for example).
  Perf lock has its own samples reordering that flushes its memory
  use in a regular basis and that uses a sorting based on the
  previous event queued (a new event to be queued is close to the
  previous one most of the time).

This patch proposes to export perf lock's samples reordering facility
to the session layer that reads the events. So if a tool wants to
get ordered sample events, it needs to set its
struct perf_event_ops::ordered_samples to true and that's it.

This prepares tracing based perf tools to get rid of the need to
use buffers multiplexing (-M) or to implement their own
reordering.

Also lower the flush period to 2 as it's sufficient already.

Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Hitoshi Mitake <mitake@dcl.info.waseda.ac.jp>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Masami Hiramatsu <mhiramat@redhat.com>
Cc: Tom Zanussi <tzanussi@gmail.com>
2010-04-24 03:49:58 +02:00
..
include perf: Move arch specific code into separate arch directory 2010-04-22 13:48:31 +10:00
scripting-engines perf/scripts: Tuple was set from long in both branches in python_process_event() 2010-04-02 21:32:16 +02:00
abspath.c perf: Enable more compiler warnings 2009-08-16 10:47:47 +02:00
alias.c perf_counter tools: Add more warnings and fix/annotate them 2009-07-01 12:49:48 +02:00
build-id.c perf: 'perf kvm' tool for monitoring guest performance from host 2010-04-19 12:37:24 +03:00
build-id.h perf build-id: Move the routine to find DSOs with hits to the lib 2010-02-04 09:33:26 +01:00
cache.h perf newt: Properly restore the screen when error exiting 2010-03-22 18:47:34 +01:00
callchain.c perf callchains: Store the map together with the symbol 2010-03-26 08:52:57 +01:00
callchain.h perf callchains: Store the map together with the symbol 2010-03-26 08:52:57 +01:00
color.c perf hist: Replace ->print() routines by ->snprintf() equivalents 2010-04-02 16:28:15 -03:00
color.h perf hist: Replace ->print() routines by ->snprintf() equivalents 2010-04-02 16:28:15 -03:00
config.c perf: Enable more compiler warnings 2009-08-16 10:47:47 +02:00
cpumap.c perf tools: Fix sparse CPU numbering related bugs 2010-03-11 13:36:53 +01:00
cpumap.h perf tools: Fix sparse CPU numbering related bugs 2010-03-11 13:36:53 +01:00
ctype.c perf tools: Move graph_line and graph_dotted_line from top 2009-11-23 21:55:20 +01:00
debug.c perf: Fix endianness argument compatibility with OPT_BOOLEAN() and introduce OPT_INCR() 2010-04-14 11:26:44 +02:00
debug.h perf: Fix endianness argument compatibility with OPT_BOOLEAN() and introduce OPT_INCR() 2010-04-14 11:26:44 +02:00
debugfs.c perf trace: Clean up find_debugfs() 2009-12-28 10:36:36 +01:00
debugfs.h perf tools: Mount debugfs automatically 2009-12-28 10:36:36 +01:00
environment.c
event.c perf: 'perf kvm' tool for monitoring guest performance from host 2010-04-19 12:37:24 +03:00
event.h perf: 'perf kvm' tool for monitoring guest performance from host 2010-04-19 12:37:24 +03:00
exec_cmd.c perf: Enable more compiler warnings 2009-08-16 10:47:47 +02:00
exec_cmd.h perf tools: Protect header files with a consistent style 2009-09-24 21:27:51 +02:00
generate-cmdlist.sh
header.c perf: 'perf kvm' tool for monitoring guest performance from host 2010-04-19 12:37:24 +03:00
header.h perf: 'perf kvm' tool for monitoring guest performance from host 2010-04-19 12:37:24 +03:00
help.c perf_counter tools: Add more warnings and fix/annotate them 2009-07-01 12:49:48 +02:00
help.h perf tools: Protect header files with a consistent style 2009-09-24 21:27:51 +02:00
hist.c perf: 'perf kvm' tool for monitoring guest performance from host 2010-04-19 12:37:24 +03:00
hist.h perf: 'perf kvm' tool for monitoring guest performance from host 2010-04-19 12:37:24 +03:00
levenshtein.c
levenshtein.h perf tools: Protect header files with a consistent style 2009-09-24 21:27:51 +02:00
map.c perf: 'perf kvm' tool for monitoring guest performance from host 2010-04-19 12:37:24 +03:00
map.h perf: 'perf kvm' tool for monitoring guest performance from host 2010-04-19 12:37:24 +03:00
newt.c perf TUI: Move "Yes" button to before "No" 2010-04-08 11:34:25 -03:00
pager.c perf_counter tools: Remove dead code 2009-06-27 06:06:39 +02:00
parse-events.c perf: Fix initialization bug in parse_single_tracepoint_event() 2010-04-24 03:24:09 +02:00
parse-events.h perf trace: Add filter Suppport 2009-10-15 11:35:23 +02:00
parse-options.c perf: Fix endianness argument compatibility with OPT_BOOLEAN() and introduce OPT_INCR() 2010-04-14 11:26:44 +02:00
parse-options.h perf: Fix endianness argument compatibility with OPT_BOOLEAN() and introduce OPT_INCR() 2010-04-14 11:26:44 +02:00
path.c perf: Enable more compiler warnings 2009-08-16 10:47:47 +02:00
PERF-VERSION-GEN perf tools: Allow specifying O= to build files in a separate directory 2010-04-02 16:28:03 -03:00
probe-event.c perf: Fix perf probe build error 2010-04-21 09:39:52 +02:00
probe-event.h perf probe: Fix a bug that --line range can be overflow 2010-04-14 17:41:21 -03:00
probe-finder.c perf: Move arch specific code into separate arch directory 2010-04-22 13:48:31 +10:00
probe-finder.h perf probe: Support DW_OP_call_frame_cfa in debuginfo 2010-04-14 17:28:20 -03:00
quote.c perf: Fix read buffer overflow 2009-08-04 11:09:56 +02:00
quote.h perf tools: Protect header files with a consistent style 2009-09-24 21:27:51 +02:00
run-command.c perf: Enable more compiler warnings 2009-08-16 10:47:47 +02:00
run-command.h perf tools: Protect header files with a consistent style 2009-09-24 21:27:51 +02:00
session.c perf: Generalize perf lock's sample event reordering to the session layer 2010-04-24 03:49:58 +02:00
session.h perf: Generalize perf lock's sample event reordering to the session layer 2010-04-24 03:49:58 +02:00
sigchain.c
sigchain.h perf tools: Protect header files with a consistent style 2009-09-24 21:27:51 +02:00
sort.c perf tools: Fix accidentally preprocessed snprintf callback 2010-04-14 16:59:21 -03:00
sort.h perf: 'perf kvm' tool for monitoring guest performance from host 2010-04-19 12:37:24 +03:00
strbuf.c perf_counter tools: Add more warnings and fix/annotate them 2009-07-01 12:49:48 +02:00
strbuf.h perf tools: Protect header files with a consistent style 2009-09-24 21:27:51 +02:00
string.c perf: Swap inclusion order of util.h and string.h in util/string.c 2010-04-04 16:40:42 +02:00
strlist.c perf probe: Fix --del to update current event list 2009-12-15 20:22:01 +01:00
strlist.h perf tools: Add for_each macros for strlist 2009-12-15 20:22:02 +01:00
svghelper.c perf timechart: Improve the visual appearance of scheduler delays 2009-10-20 03:39:21 +02:00
svghelper.h perf tools: Protect header files with a consistent style 2009-09-24 21:27:51 +02:00
symbol.c perf: 'perf kvm' tool for monitoring guest performance from host 2010-04-19 12:37:24 +03:00
symbol.h perf: 'perf kvm' tool for monitoring guest performance from host 2010-04-19 12:37:24 +03:00
thread.c perf symbols: Move more map_groups methods to map.c 2010-04-02 16:27:39 -03:00
thread.h perf: 'perf kvm' tool for monitoring guest performance from host 2010-04-19 12:37:24 +03:00
trace-event-info.c perf: Convert perf tracing data into a tracing_data event 2010-04-14 11:56:07 +02:00
trace-event-parse.c perf: Fix dynamic field detection 2010-04-15 01:34:46 +02:00
trace-event-read.c perf: Convert perf tracing data into a tracing_data event 2010-04-14 11:56:07 +02:00
trace-event-scripting.c perf/scripts: Add Python scripting engine 2010-02-25 04:07:29 +01:00
trace-event.h perf: Convert perf tracing data into a tracing_data event 2010-04-14 11:56:07 +02:00
types.h perf tools: Protect header files with a consistent style 2009-09-24 21:27:51 +02:00
usage.c perf top: Fall back to cpu-clock-tick hrtimer sampling if no cycle counter available 2009-06-07 17:31:52 +02:00
util.c perf: Fix implicit declaration of getline in util.c 2010-01-17 07:53:09 +01:00
util.h perf tools: Move the prototypes in util/string.h to util.h 2010-04-03 10:19:26 -03:00
values.c perf: Fix memory leak: counterwidth 2010-01-13 10:09:15 +01:00
values.h perf tools: Protect header files with a consistent style 2009-09-24 21:27:51 +02:00
wrapper.c perf tools: Remove unused wrapper routines 2009-11-24 16:37:03 +01:00