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4385d580f2
android_kernel_xiaomi_sdm845/tools/perf/util
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David S. Miller 4385d580f2 perf tools: Flush maps on COMM events 
Even though we don't register the counters until the child is right about
to exec(), we're still going to get at least a few events while the
fork()'d child is still executing 'perf' and in particular we're going to
get the MMAP events.

We can't distinguish the ones in the newly executed process because the
PID will be the same.

One way to solve this would be to have a PERF_RECORD_EXEC event, and when
this is seen 'perf' can flush it's map cache.  We can't use
PERF_RECORD_COMM since that's generated by other things, not just exec().

Actually, thinking about it some more, using PERF_RECORD_COMM might be a
good enough approximation.

Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Frédéric Weisbecker <fweisbec@gmail.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
LKML-Reference: <1267196914-16238-1-git-send-email-acme@infradead.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2010-02-26 16:28:45 +01:00
..
include perf tools: Adjust some verbosity levels 2010-02-04 09:33:27 +01:00
scripting-engines perf/scripts: Remove unnecessary PyTuple resizes 2010-02-25 04:07:49 +01:00
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 build-id: Move the routine to find DSOs with hits to the lib 2010-02-04 09:33:26 +01:00
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 tools: Do not manually count string lengths 2009-10-13 11:55:31 +02:00
callchain.c perf tools: Unify debug messages mechanisms 2009-10-23 08:22:47 +02:00
callchain.h perf tools: Protect header files with a consistent style 2009-09-24 21:27:51 +02:00
color.c perf tools: Librarize trace_event() helper 2009-08-16 23:06:45 +02:00
color.h perf tools: Protect header files with a consistent style 2009-09-24 21:27:51 +02:00
config.c perf: Enable more compiler warnings 2009-08-16 10:47:47 +02:00
ctype.c perf tools: Move graph_line and graph_dotted_line from top 2009-11-23 21:55:20 +01:00
debug.c perf tools: Move the map class definition to a separate header 2009-12-28 09:03:33 +01:00
debug.h perf tools: Debug.h needs to include event.h for event_t 2009-11-16 22:05:50 +01:00
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 perf_counter tools: Move from Documentation/perf_counter/ to tools/perf/ 2009-06-06 20:33:43 +02:00
event.c perf symbols: Fix up map end too on modular kernels with no modules installed 2010-02-21 17:48:24 +01:00
event.h perf tools: Encode kernel module mappings in perf.data 2010-01-13 17:39:43 +01:00
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 perf_counter tools: Move from Documentation/perf_counter/ to tools/perf/ 2009-06-06 20:33:43 +02:00
header.c perf tools: Clean up O_LARGEFILE et al usage 2010-02-04 10:03:03 +01:00
header.h perf buildid-cache: Add new command to manage build-id cache 2010-01-21 08:31:29 +01:00
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 diff: Percent calcs should use double values 2009-12-16 18:29:10 +01:00
hist.h perf diff: Use perf_session__fprintf_hists just like 'perf record' 2009-12-16 16:53:37 +01:00
levenshtein.c perf_counter tools: Move from Documentation/perf_counter/ to tools/perf/ 2009-06-06 20:33:43 +02:00
levenshtein.h perf tools: Protect header files with a consistent style 2009-09-24 21:27:51 +02:00
map.c perf symbols: Improve debugging information about symtab origins 2010-02-25 12:27:17 +01:00
map.h perf symbols: Improve debugging information about symtab origins 2010-02-25 12:27:17 +01:00
pager.c perf_counter tools: Remove dead code 2009-06-27 06:06:39 +02:00
parse-events.c perf tools: Support tracepoint glob matching 2010-01-13 10:09:13 +01:00
parse-events.h perf trace: Add filter Suppport 2009-10-15 11:35:23 +02:00
parse-options.c perf tools: Align long options which have no short forms 2009-12-10 08:30:28 +01:00
parse-options.h perf tools: Protect header files with a consistent style 2009-09-24 21:27:51 +02:00
path.c perf: Enable more compiler warnings 2009-08-16 10:47:47 +02:00
PERF-VERSION-GEN perf tools: Bump version to 0.0.2 2009-10-16 10:34:28 +02:00
probe-event.c perf probe: Support --line option to show probable source-code lines 2010-01-13 10:09:14 +01:00
probe-event.h perf probe: Support --line option to show probable source-code lines 2010-01-13 10:09:14 +01:00
probe-finder.c perf probe: Support --line option to show probable source-code lines 2010-01-13 10:09:14 +01:00
probe-finder.h perf probe: Support --line option to show probable source-code lines 2010-01-13 10:09:14 +01:00
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 tools: Clean up O_LARGEFILE et al usage 2010-02-04 10:03:03 +01:00
session.h perf record: Stop intercepting events, use postprocessing to get build-ids 2010-02-04 09:33:27 +01:00
sigchain.c perf_counter tools: Move from Documentation/perf_counter/ to tools/perf/ 2009-06-06 20:33:43 +02:00
sigchain.h perf tools: Protect header files with a consistent style 2009-09-24 21:27:51 +02:00
sort.c perf diff: Use perf_session__fprintf_hists just like 'perf record' 2009-12-16 16:53:37 +01:00
sort.h perf diff: Use perf_session__fprintf_hists just like 'perf record' 2009-12-16 16:53:37 +01:00
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 tools: Enhance glob string matching 2010-01-13 10:09:14 +01:00
string.h perf probe: Add glob matching support on --del 2009-12-15 20:22:03 +01:00
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 annotate: Defer allocating sym_priv->hist array 2010-02-25 17:39:14 +01:00
symbol.h perf annotate: Defer allocating sym_priv->hist array 2010-02-25 17:39:14 +01:00
thread.c perf tools: Flush maps on COMM events 2010-02-26 16:28:45 +01:00
thread.h perf tools: Don't use parent comm if not set at fork time 2010-02-21 17:48:24 +01:00
trace-event-info.c perf tools: Convert getpagesize() uses to sysconf(_SC_GETPAGESIZE) 2010-01-16 10:58:46 +01:00
trace-event-parse.c perf/scripts: Move common code out of Perl-specific files 2010-02-23 20:37:29 +01:00
trace-event-read.c perf tools: Clean up O_LARGEFILE et al usage 2010-02-04 10:03:03 +01:00
trace-event-scripting.c perf/scripts: Add Python scripting engine 2010-02-25 04:07:29 +01:00
trace-event.h perf/scripts: Add Python scripting engine 2010-02-25 04:07:29 +01:00
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 record: Introduce a symtab cache 2009-12-28 09:03:36 +01:00
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