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81cd60cc29
linux/tools/perf
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Adrian Hunter 81cd60cc29 perf tools: Fix Intel PT timestamp handling 
Events that don't sample the timestamp have a timestamp value of -1.

Intel PT processing wasn't taking that into account.

This is particularly noticeable with Intel BTS because timestamps are
not requested by default.

Then, if the conversion of -1 to TSC results in a small number, the
processing is unaffected.

However if the conversion results in a big number, then the data is
processed prematurely before relevant sideband data like mmap events,
which in turn results in samples with unknown dsos.

Commiter note:

Since BTS wasn't upstream, I split the patch to fold the BTS part with
the patch introducing it, to avoid having this bug in the commit
history. PT was already upstream, so this patch contains that part.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Link: http://lkml.kernel.org/r/1440060692-5585-1-git-send-email-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2015-08-21 10:29:23 -03:00
..
arch perf tools: Take Intel PT into use 2015-08-17 11:11:37 -03:00
bench perf bench futex: Add lock_pi stresser 2015-07-20 17:49:51 -03:00
config perf tools: Support static linking with libdw 2015-08-13 14:49:11 -03:00
Documentation perf tools: Take Intel PT into use 2015-08-17 11:11:37 -03:00
python perf python: Make twatch.py use soft dummy event, freq=0 2015-07-29 10:51:45 -03:00
scripts perf build: Add scripts objects building 2015-02-12 11:49:53 -03:00
tests perf tests: Add tests to callgraph and time parse 2015-08-12 13:20:29 -03:00
trace/strace/groups perf trace: Support 'strace' syscall event groups 2015-07-20 15:16:32 -03:00
ui perf report: Show call graph from reference events 2015-08-12 13:20:28 -03:00
util perf tools: Fix Intel PT timestamp handling 2015-08-21 10:29:23 -03:00
.gitignore perf tools: Add Intel PT instruction decoder 2015-08-17 11:11:36 -03:00
Build perf trace: Support 'strace' syscall event groups 2015-07-20 15:16:32 -03:00
builtin-annotate.c perf callchain: Allow disabling call graphs per event 2015-08-12 13:20:28 -03:00
builtin-bench.c perf bench futex: Add lock_pi stresser 2015-07-20 17:49:51 -03:00
builtin-buildid-cache.c perf buildid: Use SBUILD_ID_SIZE macro 2015-07-20 17:49:50 -03:00
builtin-buildid-list.c perf buildid: Use SBUILD_ID_SIZE macro 2015-07-20 17:49:50 -03:00
builtin-data.c perf data: Support using -f to override perf.data file ownership for 'convert' 2015-04-02 13:18:52 -03:00
builtin-diff.c perf callchain: Allow disabling call graphs per event 2015-08-12 13:20:28 -03:00
builtin-evlist.c perf evlist: Support using -f to override perf.data file ownership 2015-04-02 13:18:45 -03:00
builtin-help.c perf tools: Add the bash completion for listing subsubcommands of perf help 2015-03-19 13:49:39 -03:00
builtin-inject.c perf tools: Add new PERF_RECORD_SWITCH event 2015-07-23 22:51:13 -03:00
builtin-kmem.c perf kmem: Fill in the missing session freeing after an error occurs 2015-07-01 17:53:49 -03:00
builtin-kvm.c perf kvm: Fill in the missing session freeing after an error occurs 2015-07-01 17:53:49 -03:00
builtin-list.c perf list: Extend raw-dump to certain kind of events 2015-02-27 15:52:24 -03:00
builtin-lock.c perf machine: Protect the machine->threads with a rwlock 2015-05-08 16:19:27 -03:00
builtin-mem.c perf mem: Fill in the missing session freeing after an error occurs 2015-07-01 17:53:49 -03:00
builtin-probe.c perf probe: Delete an unnecessary check before the function call "strfilter__delete" 2015-07-06 08:58:36 -03:00
builtin-record.c Merge branch 'perf/urgent' into perf/core, to pick up fixes before adding more changes 2015-08-20 11:48:56 +02:00
builtin-report.c perf report: Show call graph from reference events 2015-08-12 13:20:28 -03:00
builtin-sched.c perf sched: Add option to merge like comms to lat output 2015-05-27 12:21:45 -03:00
builtin-script.c perf script: Initialize callchain_param.record_mode 2015-08-17 10:48:39 -03:00
builtin-stat.c perf stat: Move perf_counts struct and functions into separate object 2015-08-08 14:16:49 -03:00
builtin-timechart.c perf tools: Elliminate alignment holes 2015-05-18 10:17:33 -03:00
builtin-top.c Merge branch 'perf/urgent' into perf/core, to pick up fixes before adding more changes 2015-08-20 11:48:56 +02:00
builtin-trace.c perf trace: Move vfs_getname storage to per thread area 2015-08-14 13:16:27 -03:00
builtin.h perf tools: Add new 'perf data' command 2015-02-25 12:42:25 -03:00
command-list.txt perf tools: Add new 'perf data' command 2015-02-25 12:42:25 -03:00
CREDITS
design.txt perf tools: Update some code references in design.txt 2014-03-18 18:17:06 -03:00
Makefile perf build: Fix single target build dependency check 2015-06-22 11:27:09 -03:00
Makefile.perf perf tools: Add Intel PT instruction decoder 2015-08-17 11:11:36 -03:00
MANIFEST perf tests: Add LLVM test for eBPF on-the-fly compiling 2015-08-07 10:57:24 -03:00
perf-archive.sh
perf-completion.sh perf tools: Avoid confusion with preloaded bash function for perf bash completion 2015-03-19 13:53:27 -03:00
perf-read-vdso.c perf tools: Build programs to copy 32-bit compatibility 2014-10-29 10:32:48 -02:00
perf-sys.h perf tools: Move generic barriers out of perf-sys.h 2015-05-08 16:05:08 -03:00
perf-with-kcore.sh perf tools: Fix perf-with-kcore handling of arguments containing spaces 2015-08-06 16:48:27 -03:00
perf.c perf tools: Fix the bash completion problem of 'perf --*' 2015-02-27 15:52:28 -03:00
perf.h perf tools: Introduce callgraph_set for callgraph option 2015-07-29 16:18:45 -03:00