Messages in this thread Patch in this message | | | From | Adrian Hunter <> | Subject | [PATCH 02/37] perf intel-pt: Add default config for pass-through branch enable | Date | Fri, 19 May 2017 11:54:01 +0300 |
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Branch tracing is enabled by default, so a fake config bit called 'pt' (pass-through) was added to allow the 'branch enable' bit to have affect. Add default config 'pt,branch' which will allow users to disable branch tracing using 'branch=0' instead of having to specify 'pt,branch=0'.
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> --- tools/perf/arch/x86/util/intel-pt.c | 5 +++++ 1 file changed, 5 insertions(+)
diff --git a/tools/perf/arch/x86/util/intel-pt.c b/tools/perf/arch/x86/util/intel-pt.c index f630de0206a1..007621a7e420 100644 --- a/tools/perf/arch/x86/util/intel-pt.c +++ b/tools/perf/arch/x86/util/intel-pt.c @@ -196,6 +196,7 @@ static u64 intel_pt_default_config(struct perf_pmu *intel_pt_pmu) int psb_cyc, psb_periods, psb_period; int pos = 0; u64 config; + char c; pos += scnprintf(buf + pos, sizeof(buf) - pos, "tsc"); @@ -229,6 +230,10 @@ static u64 intel_pt_default_config(struct perf_pmu *intel_pt_pmu) } } + if (perf_pmu__scan_file(intel_pt_pmu, "format/pt", "%c", &c) == 1 && + perf_pmu__scan_file(intel_pt_pmu, "format/branch", "%c", &c) == 1) + pos += scnprintf(buf + pos, sizeof(buf) - pos, ",pt,branch"); + pr_debug2("%s default config: %s\n", intel_pt_pmu->name, buf); intel_pt_parse_terms(&intel_pt_pmu->format, buf, &config); -- 1.9.1
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