Frederic Weisbecker 612d4fd7d0 perf: Support for callchains merge ... If we sort the histograms by comm, which is the default, we need to merge some of them, typically different thread histograms of a same process, or just same comm. But during this merge, we forgot to merge callchains. So imagine we have three threads (tids: 1000, 1001, 1002) that belong to comm "foo". tid 1000 got 100 events tid 1001 got 10 events tid 1002 got 3 events Once we merge these histograms to get a per comm result, we'll finally get: "foo" got 113 events The problem is if we merge 1000 and 1001 histograms into 1002, then the end merge result, wrt callchains, will be only callchains that belong to 1002. This is because we haven't handled callchains in the merge. Only those from one of the threads inside a common comm survive. It means during this merge, we can lose a lot of callchains. Fix this by implementing callchains merge and apply it on histograms that collapse. Reported-by: Christoph Hellwig <hch@infradead.org> Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Paul Mackerras <paulus@samba.org>		2010-08-22 21:10:35 +02:00
..
include	perf: Add back list_head data types	2010-08-12 21:50:00 +02:00
scripting-engines	perf scripts python: Give field dict to unhandled callback	2010-06-01 06:12:35 -03:00
ui	perf ui browser: Add routines to compactly specify exit keys	2010-08-19 19:44:18 -03:00
abspath.c	perf tools: Remove some unused functions	2010-05-18 23:03:35 -03:00
alias.c
bitmap.c	perf tools: Don't use code surrounded by __KERNEL__	2010-05-02 12:00:44 -03:00
build-id.c	perf tools: Release thread resources on PERF_RECORD_EXIT	2010-07-30 18:28:42 -03:00
build-id.h	perf annotate: Use build-ids to find the right DSO	2010-05-20 12:15:33 -03:00
cache.h	perf tools: add test for strlcpy()	2010-08-21 11:22:47 -03:00
callchain.c	perf: Support for callchains merge	2010-08-22 21:10:35 +02:00
callchain.h	perf: Support for callchains merge	2010-08-22 21:10:35 +02:00
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 buildid: add perfconfig option to specify buildid cache dir	2010-06-05 09:34:04 -03:00
cpumap.c	perf tools: Add the ability to specify list of cpus to monitor	2010-06-05 09:33:01 -03:00
cpumap.h	perf tools: Add the ability to specify list of cpus to monitor	2010-06-05 09:33:01 -03:00
ctype.c
debug.c	perf ui: Complete the breakdown of util/newt.c	2010-08-10 16:11:38 -03:00
debug.h	perf ui: Complete the breakdown of util/newt.c	2010-08-10 16:11:38 -03:00
debugfs.c
debugfs.h
environment.c
event.c	perf: expose event__process function	2010-08-04 12:41:23 -03:00
event.h	perf: expose event__process function	2010-08-04 12:41:23 -03:00
exec_cmd.c	perf tools: remove xstrndup, xmalloc, xzalloc	2010-05-18 23:05:28 -03:00
exec_cmd.h	perf tools: Remove some unused functions	2010-05-18 23:03:35 -03:00
generate-cmdlist.sh
header.c	perf record: Add option to avoid updating buildid cache	2010-06-17 10:20:44 -03:00
header.h	perf/live: don't synthesize build ids at the end of a live mode trace	2010-05-02 12:04:05 -03:00
help.c	perf tools: Remove some unused functions	2010-05-18 23:03:35 -03:00
help.h
hist.c	perf: Support for callchains merge	2010-08-22 21:10:35 +02:00
hist.h	perf annotate: Sort by hottest lines in the TUI	2010-08-10 16:11:42 -03:00
hweight.c	perf tools: Don't use code surrounded by __KERNEL__	2010-05-02 12:00:44 -03:00
levenshtein.c
levenshtein.h
map.c	perf tools: Don't keep unreferenced maps when unmaps are detected	2010-08-02 19:45:23 -03:00
map.h	perf tools: Don't keep unreferenced maps when unmaps are detected	2010-08-02 19:45:23 -03:00
pager.c
parse-events.c	perf: Don't use 4 bytes as a default instruction breakpoint length	2010-06-24 23:35:49 +02:00
parse-events.h	perf: record TRACE_INFO only if using tracepoints and SAMPLE_RAW	2010-05-03 10:31:48 -03:00
parse-options.c	perf options: Type check all the remaining OPT_ variants	2010-05-17 16:22:41 -03:00
parse-options.h	perf options: Type check all the remaining OPT_ variants	2010-05-17 16:22:41 -03:00
path.c	perf tools: add test for strlcpy()	2010-08-21 11:22:47 -03:00
PERF-VERSION-GEN	perf: Version String fix, for fallback if not from git	2010-07-05 10:42:58 +02:00
probe-event.c	perf probe: Fix memory leaks in add_perf_probe_events	2010-08-06 16:25:56 -03:00
probe-event.h	perf probe: Rename common fields/functions from kprobe to probe.	2010-07-30 12:01:38 -03:00
probe-finder.c	perf probe: Fix to copy the type for raw parameters	2010-08-06 16:25:56 -03:00
probe-finder.h	perf probe: Rename common fields/functions from kprobe to probe.	2010-07-30 12:01:38 -03:00
pstack.c	perf newt: Make <- zoom out filters	2010-05-14 20:05:21 -03:00
pstack.h	perf ui: Move hists browser to util/ui/browsers/	2010-08-10 16:11:08 -03:00
quote.c	perf tools: Remove some unused functions	2010-05-18 23:03:35 -03:00
quote.h	perf tools: Remove some unused functions	2010-05-18 23:03:35 -03:00
run-command.c	perf tools: Remove some unused functions	2010-05-18 23:03:35 -03:00
run-command.h	perf tools: Remove some unused functions	2010-05-18 23:03:35 -03:00
session.c	perf session: Invalidate last_match when removing threads from rb_tree	2010-08-02 19:01:09 -03:00
session.h	perf session: Remove threads from tree on PERF_RECORD_EXIT	2010-06-17 08:37:44 -03:00
sigchain.c	perf tools: Remove some unused functions	2010-05-18 23:03:35 -03:00
sigchain.h	perf tools: Remove some unused functions	2010-05-18 23:03:35 -03:00
sort.c	perf hists: Fixup addr snprintf width on 32 bit arches	2010-08-05 19:38:01 -03:00
sort.h	perf: Keep track of the max depth of a callchain	2010-08-22 20:43:17 +02:00
strbuf.c	perf tools: Remove some unused functions	2010-05-18 23:03:35 -03:00
strbuf.h	perf tools: Remove some unused functions	2010-05-18 23:03:35 -03:00
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
strlist.h
svghelper.c
svghelper.h
symbol.c	perf symbols: Ignore mapping symbols on ARM	2010-08-10 16:10:36 -03:00
symbol.h	perf symbols: Store the symbol binding	2010-08-05 19:38:01 -03:00
thread.c	perf tools: Release thread resources on PERF_RECORD_EXIT	2010-07-30 18:28:42 -03:00
thread.h	perf tools: Release thread resources on PERF_RECORD_EXIT	2010-07-30 18:28:42 -03:00
trace-event-info.c	perf/record: simplify TRACE_INFO tracepoint check	2010-05-05 11:12:53 -03:00
trace-event-parse.c	Merge branch 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip	2010-05-18 08:19:03 -07:00
trace-event-read.c	perf: Use read() instead of lseek() in trace_event_read.c:skip()	2010-05-20 08:37:17 +02:00
trace-event-scripting.c
trace-event.h	perf: Fix unaligned accesses while fetching trace values	2010-05-20 11:21:57 +02:00
types.h
usage.c
util.c	perf report: Report number of events, not samples	2010-05-14 14:19:35 -03:00
util.h	perf ui browser: Return the exit key in all browsers	2010-08-19 19:39:52 -03:00
values.c
values.h
wrapper.c	perf tools: remove xstrndup, xmalloc, xzalloc	2010-05-18 23:05:28 -03:00