linux/tools/perf
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
..
bench perf sched: Fix build failure on sparc 2009-12-14 08:59:12 +01:00
Documentation perf/scripts: Tag syscall_name helper as not yet available 2010-02-25 04:07:50 +01:00
scripts perf/scripts: Add syscall tracing scripts 2010-02-25 04:07:48 +01:00
util perf tools: Flush maps on COMM events 2010-02-26 16:28:45 +01:00
.gitignore perf: Ignore perf-archive temp file 2010-01-29 10:37:33 +01:00
builtin-annotate.c perf annotate: Handle samples not at objdump output addr boundaries 2010-02-26 15:42:49 +01:00
builtin-bench.c perf bench: Add "all" pseudo subsystem and "all" pseudo suite 2009-12-14 08:51:19 +01:00
builtin-buildid-cache.c perf buildid-cache: Add new command to manage build-id cache 2010-01-21 08:31:29 +01:00
builtin-buildid-list.c perf build-id: Move the routine to find DSOs with hits to the lib 2010-02-04 09:33:26 +01:00
builtin-diff.c perf tools: Don't cast RIP to pointers 2010-01-16 10:58:45 +01:00
builtin-help.c perf: Make cmd_to_page() function more compact 2010-01-13 10:53:51 +01:00
builtin-kmem.c perf symbols: Remove perf_session usage in symbols layer 2010-02-04 09:33:24 +01:00
builtin-list.c perf list: Fix large list output by using the pager 2009-08-13 09:05:48 +02:00
builtin-lock.c perf lock: Clean up various details 2010-01-31 09:08:27 +01:00
builtin-probe.c perf probe: Don't use a perf_session instance just to resolve symbols 2010-02-04 09:33:26 +01:00
builtin-record.c perf record: Fix existing process callgraph symbol 2010-02-08 16:55:52 +01:00
builtin-report.c Merge branch 'perf/urgent' into perf/core 2010-01-29 10:36:22 +01:00
builtin-sched.c perf tools: Don't cast RIP to pointers 2010-01-16 10:58:45 +01:00
builtin-stat.c perf tools: Fix --pid option for stat 2010-01-13 10:09:08 +01:00
builtin-timechart.c Merge branch 'perf/urgent' into perf/core 2010-01-29 10:36:22 +01:00
builtin-top.c perf top: Use a macro instead of a constant variable 2010-02-25 12:26:16 +01:00
builtin-trace.c perf/scripts: Add Python scripting engine 2010-02-25 04:07:29 +01:00
builtin.h perf lock: Introduce new tool "perf lock", for analyzing lock statistics 2010-01-31 09:08:26 +01:00
command-list.txt perf buildid-cache: Add new command to manage build-id cache 2010-01-21 08:31:29 +01:00
CREDITS perf_counter tools: Add CREDITS file for Git contributors 2009-06-24 19:54:29 +02:00
design.txt perf: Fix few typos + cosmetics 2010-01-13 17:39:44 +01:00
Makefile perf/scripts: Add syscall tracing scripts 2010-02-25 04:07:48 +01:00
perf-archive.sh perf archive: Add helper script to package files needed to do analysis 2010-01-16 10:58:49 +01:00
perf.c perf lock: Introduce new tool "perf lock", for analyzing lock statistics 2010-01-31 09:08:26 +01:00
perf.h perf tools: Allow building for ARM 2009-12-11 13:50:21 +01:00