linux-kernel - [PATCH 1/5] perf tools: Print LOST read format in the verbose mode

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Message-Id: <20220901195739.668604-2-namhyung@kernel.org>
Date:   Thu,  1 Sep 2022 12:57:35 -0700
From:   Namhyung Kim <namhyung@...nel.org>
To:     Arnaldo Carvalho de Melo <acme@...nel.org>,
        Jiri Olsa <jolsa@...nel.org>
Cc:     Ingo Molnar <mingo@...nel.org>,
        Peter Zijlstra <peterz@...radead.org>,
        LKML <linux-kernel@...r.kernel.org>,
        Ian Rogers <irogers@...gle.com>,
        linux-perf-users@...r.kernel.org,
        Adrian Hunter <adrian.hunter@...el.com>
Subject: [PATCH 1/5] perf tools: Print LOST read format in the verbose mode

So that we can see it with:

  $ perf record -vv pwd
  ...
  perf_event_attr:
    size                             128
    { sample_period, sample_freq }   4000
    sample_type                      IP|TID|TIME|PERIOD
    read_format                      ID|LOST
    disabled                         1
    inherit                          1
    exclude_kernel                   1
    freq                             1
    enable_on_exec                   1
    precise_ip                       3
    sample_id_all                    1
    exclude_guest                    1

Signed-off-by: Namhyung Kim <namhyung@...nel.org>
---
 tools/perf/util/perf_event_attr_fprintf.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/perf/util/perf_event_attr_fprintf.c b/tools/perf/util/perf_event_attr_fprintf.c
index 4b0db27b7199..7e5e7b30510d 100644
--- a/tools/perf/util/perf_event_attr_fprintf.c
+++ b/tools/perf/util/perf_event_attr_fprintf.c
@@ -64,7 +64,7 @@ static void __p_read_format(char *buf, size_t size, u64 value)
 #define bit_name(n) { PERF_FORMAT_##n, #n }
 	struct bit_names bits[] = {
 		bit_name(TOTAL_TIME_ENABLED), bit_name(TOTAL_TIME_RUNNING),
-		bit_name(ID), bit_name(GROUP),
+		bit_name(ID), bit_name(GROUP), bit_name(LOST),
 		{ .name = NULL, }
 	};
 #undef bit_name
-- 
2.37.2.789.g6183377224-goog