[tip:perf/core] perf report: Fix sample type validation for synthesized callchains

From: tip-bot for Adrian Hunter
Date: Tue Sep 29 2015 - 04:52:45 EST

Commit-ID: d062ac16f53d1a24047bcc9eded5514a71c363b8
Gitweb: http://git.kernel.org/tip/d062ac16f53d1a24047bcc9eded5514a71c363b8
Author: Adrian Hunter <adrian.hunter@xxxxxxxxx>
AuthorDate: Fri, 25 Sep 2015 16:15:33 +0300
Committer: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
CommitDate: Mon, 28 Sep 2015 16:42:38 -0300

perf report: Fix sample type validation for synthesized callchains

Processing instruction tracing data (e.g. Intel PT) can synthesize
callchains e.g.

$ perf record -e intel_pt//u uname
$ perf report --stdio --itrace=ige

However perf report's callgraph option gets extra validation, so:

$ perf report --stdio --itrace=ige -gflat
Selected -g or --branch-history but no callchain data. Did
you call 'perf record' without -g?
# To display the perf.data header info,
# please use --header/--header-only options.

Fix the validation to know about instruction tracing options so
above command works.

A side-effect of the change is that the default option to
accumulate the callchain of child functions comes into force.
To get the previous behaviour the --no-children option can be
used e.g.

$ perf report --stdio --itrace=ige -gflat --no-children

Signed-off-by: Adrian Hunter <adrian.hunter@xxxxxxxxx>
Cc: Jiri Olsa <jolsa@xxxxxxxxxx>
Link: http://lkml.kernel.org/r/1443186956-18718-3-git-send-email-adrian.hunter@xxxxxxxxx
Signed-off-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
tools/perf/builtin-report.c | 6 ++++++
1 file changed, 6 insertions(+)

diff --git a/tools/perf/builtin-report.c b/tools/perf/builtin-report.c
index e4e3f14..0d53b48 100644
--- a/tools/perf/builtin-report.c
+++ b/tools/perf/builtin-report.c
@@ -214,6 +214,12 @@ static int report__setup_sample_type(struct report *rep)
u64 sample_type = perf_evlist__combined_sample_type(session->evlist);
bool is_pipe = perf_data_file__is_pipe(session->file);

+ if (session->itrace_synth_opts->callchain ||
+ (!is_pipe &&
+ perf_header__has_feat(&session->header, HEADER_AUXTRACE) &&
+ !session->itrace_synth_opts->set))
+ sample_type |= PERF_SAMPLE_CALLCHAIN;
if (!is_pipe && !(sample_type & PERF_SAMPLE_CALLCHAIN)) {
if (sort__has_parent) {
ui__error("Selected --sort parent, but no "
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