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/Documentation/perf-report.txt | 3 +++ 1 file changed, 3 insertions(+) (limited to 'tools/perf/Documentation/perf-report.txt') diff --git a/tools/perf/Documentation/perf-report.txt b/tools/perf/Documentation/perf-report.txt index f546b5e9db05..87112e8d904e 100644 --- a/tools/perf/Documentation/perf-report.txt +++ b/tools/perf/Documentation/perf-report.txt @@ -224,6 +224,9 @@ OPTIONS --dump-raw-trace:: Dump raw trace in ASCII. +--disable-order:: + Disable raw trace ordering. + -g:: --call-graph=:: Display call chains using type, min percent threshold, print limit, -- cgit v1.2.3-59-g8ed1b