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Revert "perf record: Fix crash in pipe mode"

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This reverts commit f766148e47 which is
commit ad46e48c65 upstream.

It breaks the build.  Turns out we don't test perf on stable releases,
we need to fix that :(

Reported-by: Pavlos Parissis <pavlos.parissis@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Greg Kroah-Hartman
2018-05-30 11:41:46 +02:00
parent ec39812d21
commit 48aaff1bcd
3 changed files with 2 additions and 16 deletions
Download Patch File Download Diff File Expand all files Collapse all files

9
tools/perf/builtin-record.c
View File

@@ -926,15 +926,6 @@ static int __cmd_record(struct record *rec, int argc, const char **argv)
}
}
/*
* If we have just single event and are sending data
* through pipe, we need to force the ids allocation,
* because we synthesize event name through the pipe
* and need the id for that.
*/
if (data->is_pipe && rec->evlist->nr_entries == 1)
rec->opts.sample_id = true;
if (record__open(rec) != 0) {
err = -1;
goto out_child;

1
tools/perf/perf.h
View File

@@ -61,7 +61,6 @@ struct record_opts {
bool tail_synthesize;
bool overwrite;
bool ignore_missing_thread;
bool sample_id;
unsigned int freq;
unsigned int mmap_pages;
unsigned int auxtrace_mmap_pages;

8
tools/perf/util/record.c
View File

@@ -137,7 +137,6 @@ void perf_evlist__config(struct perf_evlist *evlist, struct record_opts *opts,
struct perf_evsel *evsel;
bool use_sample_identifier = false;
bool use_comm_exec;
bool sample_id = opts->sample_id;
/*
* Set the evsel leader links before we configure attributes,
@@ -164,7 +163,8 @@ void perf_evlist__config(struct perf_evlist *evlist, struct record_opts *opts,
* match the id.
*/
use_sample_identifier = perf_can_sample_identifier();
sample_id = true;
evlist__for_each_entry(evlist, evsel)
perf_evsel__set_sample_id(evsel, use_sample_identifier);
} else if (evlist->nr_entries > 1) {
struct perf_evsel *first = perf_evlist__first(evlist);
@@ -174,10 +174,6 @@ void perf_evlist__config(struct perf_evlist *evlist, struct record_opts *opts,
use_sample_identifier = perf_can_sample_identifier();
break;
}
sample_id = true;
}
if (sample_id) {
evlist__for_each_entry(evlist, evsel)
perf_evsel__set_sample_id(evsel, use_sample_identifier);
}