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SUSE:SLE-15-SP3:Update
perf
perf-auxtrace-add-an-option-to-synthesize-callc...
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File perf-auxtrace-add-an-option-to-synthesize-callchains-for-regular-events.patch of Package perf
From: Adrian Hunter <adrian.hunter@intel.com> Date: Wed, 1 Apr 2020 13:16:05 +0300 Subject: perf auxtrace: Add an option to synthesize callchains for regular events Git-commit: 1c5c25b3fdbd7035f6d53a1a99b5afd577ce13e1 Patch-mainline: v5.8-rc1 References: SLE-14769 X-Info: dependent patch for ec90e42ce5142c4ed2a0061fe23bd4495428c52b Currently, callchains can be synthesized only for synthesized events. Add an itrace option to synthesize callchains for regular events. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lore.kernel.org/lkml/20200401101613.6201-9-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: Tony Jones <tonyj@suse.de> --- tools/perf/Documentation/itrace.txt | 1 + tools/perf/builtin-report.c | 3 ++- tools/perf/builtin-script.c | 2 +- tools/perf/util/auxtrace.c | 6 +++++- tools/perf/util/auxtrace.h | 2 ++ tools/perf/util/s390-cpumsf.c | 2 +- 6 files changed, 12 insertions(+), 4 deletions(-) diff --git a/tools/perf/Documentation/itrace.txt b/tools/perf/Documentation/itrace.txt index 82ff7dad40c2..671e154ede03 100644 --- a/tools/perf/Documentation/itrace.txt +++ b/tools/perf/Documentation/itrace.txt @@ -10,6 +10,7 @@ e synthesize error events d create a debug log g synthesize a call chain (use with i or x) + G synthesize a call chain on existing event records l synthesize last branch entries (use with i or x) s skip initial number of events diff --git a/tools/perf/builtin-report.c b/tools/perf/builtin-report.c index 26d8fc27e427..c0cebd53ecf9 100644 --- a/tools/perf/builtin-report.c +++ b/tools/perf/builtin-report.c @@ -339,6 +339,7 @@ static int report__setup_sample_type(struct report *rep) bool is_pipe = perf_data__is_pipe(session->data); if (session->itrace_synth_opts->callchain || + session->itrace_synth_opts->add_callchain || (!is_pipe && perf_header__has_feat(&session->header, HEADER_AUXTRACE) && !session->itrace_synth_opts->set)) @@ -1332,7 +1333,7 @@ int cmd_report(int argc, const char **argv) if (symbol_conf.cumulate_callchain && !callchain_param.order_set) callchain_param.order = ORDER_CALLER; - if (itrace_synth_opts.callchain && + if ((itrace_synth_opts.callchain || itrace_synth_opts.add_callchain) && (int)itrace_synth_opts.callchain_sz > report.max_stack) report.max_stack = itrace_synth_opts.callchain_sz; diff --git a/tools/perf/builtin-script.c b/tools/perf/builtin-script.c index 8bf3ba280312..06b511c0a539 100644 --- a/tools/perf/builtin-script.c +++ b/tools/perf/builtin-script.c @@ -3537,7 +3537,7 @@ int cmd_script(int argc, const char **argv) return -1; } - if (itrace_synth_opts.callchain && + if ((itrace_synth_opts.callchain || itrace_synth_opts.add_callchain) && itrace_synth_opts.callchain_sz > scripting_max_stack) scripting_max_stack = itrace_synth_opts.callchain_sz; diff --git a/tools/perf/util/auxtrace.c b/tools/perf/util/auxtrace.c index b60bae8e395c..809a09e75c55 100644 --- a/tools/perf/util/auxtrace.c +++ b/tools/perf/util/auxtrace.c @@ -1462,8 +1462,12 @@ int itrace_parse_synth_opts(const struct option *opt, const char *str, synth_opts->branches = true; synth_opts->returns = true; break; + case 'G': case 'g': - synth_opts->callchain = true; + if (p[-1] == 'G') + synth_opts->add_callchain = true; + else + synth_opts->callchain = true; synth_opts->callchain_sz = PERF_ITRACE_DEFAULT_CALLCHAIN_SZ; while (*p == ' ' || *p == ',') diff --git a/tools/perf/util/auxtrace.h b/tools/perf/util/auxtrace.h index db65aae5c2ea..dd8a4ff8209e 100644 --- a/tools/perf/util/auxtrace.h +++ b/tools/perf/util/auxtrace.h @@ -74,6 +74,7 @@ enum itrace_period_type { * @calls: limit branch samples to calls (can be combined with @returns) * @returns: limit branch samples to returns (can be combined with @calls) * @callchain: add callchain to 'instructions' events + * @add_callchain: add callchain to existing event records * @thread_stack: feed branches to the thread_stack * @last_branch: add branch context to 'instruction' events * @callchain_sz: maximum callchain size @@ -101,6 +102,7 @@ struct itrace_synth_opts { bool calls; bool returns; bool callchain; + bool add_callchain; bool thread_stack; bool last_branch; unsigned int callchain_sz; diff --git a/tools/perf/util/s390-cpumsf.c b/tools/perf/util/s390-cpumsf.c index d7779e48652f..38a942881d1a 100644 --- a/tools/perf/util/s390-cpumsf.c +++ b/tools/perf/util/s390-cpumsf.c @@ -1079,7 +1079,7 @@ static bool check_auxtrace_itrace(struct itrace_synth_opts *itops) itops->pwr_events || itops->errors || itops->dont_decode || itops->calls || itops->returns || itops->callchain || itops->thread_stack || - itops->last_branch; + itops->last_branch || itops->add_callchain; if (!ison) return true; pr_err("Unsupported --itrace options specified\n");
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