From 1d846aeb86cc6e9db1cf08822404c95ecb8bd6c1 Mon Sep 17 00:00:00 2001 From: Adrian Hunter Date: Fri, 10 Jul 2020 18:10:58 +0300 Subject: perf intel-pt: Use itrace error flags to suppress some errors The itrace "e" option may be followed by flags which affect what errors will or will not be reported. Each flag must be preceded by either '+' or '-'. The flags supported by Intel PT are: -o Suppress overflow errors -l Suppress trace data lost errors For example, for errors but not overflow or data lost errors: --itrace=e-o-l Suppressing those errors can be useful for testing and debugging because they are not due to decoding. Signed-off-by: Adrian Hunter Reviewed-by: Andi Kleen Cc: Jiri Olsa Link: http://lore.kernel.org/lkml/20200710151104.15137-7-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/intel-pt.c | 9 +++++++++ 1 file changed, 9 insertions(+) (limited to 'tools/perf/util') diff --git a/tools/perf/util/intel-pt.c b/tools/perf/util/intel-pt.c index 9cef46cfcf13..8b860a6f4ea9 100644 --- a/tools/perf/util/intel-pt.c +++ b/tools/perf/util/intel-pt.c @@ -1863,6 +1863,15 @@ static int intel_pt_synth_error(struct intel_pt *pt, int code, int cpu, char msg[MAX_AUXTRACE_ERROR_MSG]; int err; + if (pt->synth_opts.error_minus_flags) { + if (code == INTEL_PT_ERR_OVR && + pt->synth_opts.error_minus_flags & AUXTRACE_ERR_FLG_OVERFLOW) + return 0; + if (code == INTEL_PT_ERR_LOST && + pt->synth_opts.error_minus_flags & AUXTRACE_ERR_FLG_DATA_LOST) + return 0; + } + intel_pt__strerror(code, msg, MAX_AUXTRACE_ERROR_MSG); auxtrace_synth_error(&event.auxtrace_error, PERF_AUXTRACE_ERROR_ITRACE, -- cgit v1.2.3