From 4b6ac811bce46c83811b83cdf87b41251596b9fc Mon Sep 17 00:00:00 2001 From: Andi Kleen Date: Sun, 24 Feb 2019 07:37:12 -0800 Subject: [PATCH] perf script: Handle missing fields with -F +.. When using -F + syntax to add a field the existing defaults are currently all marked user_set. This can cause errors when some field is missing in the perf.data This patch tracks the actually user set fields separately, so that we don't error out in this case. Before: % perf record true % perf script -F +metric Samples for 'cycles:ppp' event do not have CPU attribute set. Cannot print 'cpu' field. % After: 5 perf record true % perf script -F +metric perf 28936 278636.237688: 1 cycles:ppp: ffffffff8117da99 perf_event_exec+0x59 (/lib/modules/4.20.0-odilo/build/vmlinux) ... % Signed-off-by: Andi Kleen Tested-by: Arnaldo Carvalho de Melo Acked-by: Jiri Olsa Cc: Jiri Olsa Cc: Namhyung Kim Cc: Stephane Eranian Link: http://lkml.kernel.org/r/20190224153722.27020-2-andi@firstfloor.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/builtin-script.c | 10 +++++++--- 1 file changed, 7 insertions(+), 3 deletions(-) diff --git a/tools/perf/builtin-script.c b/tools/perf/builtin-script.c index 5b1543f42290..2d8cb1d1682c 100644 --- a/tools/perf/builtin-script.c +++ b/tools/perf/builtin-script.c @@ -149,6 +149,7 @@ static struct { unsigned int print_ip_opts; u64 fields; u64 invalid_fields; + u64 user_set_fields; } output[OUTPUT_TYPE_MAX] = { [PERF_TYPE_HARDWARE] = { @@ -345,7 +346,7 @@ static int perf_evsel__do_check_stype(struct perf_evsel *evsel, if (attr->sample_type & sample_type) return 0; - if (output[type].user_set) { + if (output[type].user_set_fields & field) { if (allow_user_set) return 0; evname = perf_evsel__name(evsel); @@ -2632,10 +2633,13 @@ static int parse_output_fields(const struct option *opt __maybe_unused, pr_warning("\'%s\' not valid for %s events. Ignoring.\n", all_output_options[i].str, event_type(j)); } else { - if (change == REMOVE) + if (change == REMOVE) { output[j].fields &= ~all_output_options[i].field; - else + output[j].user_set_fields &= ~all_output_options[i].field; + } else { output[j].fields |= all_output_options[i].field; + output[j].user_set_fields |= all_output_options[i].field; + } output[j].user_set = true; output[j].wildcard_set = true; }