From 2e989f82181cd414599c6afbc5a666356a3d1dd1 Mon Sep 17 00:00:00 2001 From: Jin Yao Date: Fri, 19 Feb 2021 15:00:05 +0800 Subject: perf report: Create option to disable raw event ordering Warning "dso not found" is reported when using "perf report -D". 66702781413407 0x32c0 [0x30]: PERF_RECORD_SAMPLE(IP, 0x2): 28177/28177: 0x55e493e00563 period: 106578 addr: 0 ... thread: perf:28177 ...... dso: 66702727832429 0x9dd8 [0x38]: PERF_RECORD_COMM exec: triad_loop:28177/28177 The PERF_RECORD_SAMPLE event (timestamp: 66702781413407) should be after the PERF_RECORD_COMM event (timestamp: 66702727832429), but it's early processed. So for most of cases, it makes sense to keep the event ordered even for dump mode. But it would be also useful to disable ordered_events for reporting raw dump to see events as they are stored in the perf.data file. So now, set ordered_events by default to true and add a new option 'disable-order' to disable it. For example, perf report -D --disable-order Fixes: 977f739b7126b ("perf report: Disable ordered_events for raw dump") Signed-off-by: Jin Yao Acked-by: Jiri Olsa Cc: Alexander Shishkin Cc: Andi Kleen Cc: Ingo Molnar Cc: Jin Yao Cc: Kan Liang Cc: Peter Zijlstra Link: https://lore.kernel.org/r/20210219070005.12397-1-yao.jin@linux.intel.com Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/builtin-report.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) (limited to 'tools/perf/builtin-report.c') diff --git a/tools/perf/builtin-report.c b/tools/perf/builtin-report.c index 2a845d6cac09..0d65c98794a8 100644 --- a/tools/perf/builtin-report.c +++ b/tools/perf/builtin-report.c @@ -84,6 +84,7 @@ struct report { bool nonany_branch_mode; bool group_set; bool stitch_lbr; + bool disable_order; int max_stack; struct perf_read_values show_threads_values; struct annotation_options annotation_opts; @@ -1296,6 +1297,8 @@ int cmd_report(int argc, const char **argv) OPTS_EVSWITCH(&report.evswitch), OPT_BOOLEAN(0, "total-cycles", &report.total_cycles_mode, "Sort all blocks by 'Sampled Cycles%'"), + OPT_BOOLEAN(0, "disable-order", &report.disable_order, + "Disable raw trace ordering"), OPT_END() }; struct perf_data data = { @@ -1329,7 +1332,7 @@ int cmd_report(int argc, const char **argv) if (report.mmaps_mode) report.tasks_mode = true; - if (dump_trace) + if (dump_trace && report.disable_order) report.tool.ordered_events = false; if (quiet) -- cgit