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| author | Adrian Hunter <adrian.hunter@intel.com> | 2017-05-26 11:17:12 +0300 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2017-06-21 11:35:48 -0300 |
| commit | 9fd629f9a6d0eded133f5f9866226f6bbfe5f50d (patch) | |
| tree | a337421b0d004e4212bc4293f0e64db031a963ac | |
| parent | 839598176b0554967238234e1e92c7d1e3f0d53d (diff) | |
| download | linux-9fd629f9a6d0eded133f5f9866226f6bbfe5f50d.tar.gz linux-9fd629f9a6d0eded133f5f9866226f6bbfe5f50d.tar.bz2 linux-9fd629f9a6d0eded133f5f9866226f6bbfe5f50d.zip | |
perf intel-pt: Add default config for pass-through branch enable
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>
Cc: Andi Kleen <ak@linux.intel.com>
Link: http://lkml.kernel.org/r/1495786658-18063-12-git-send-email-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| -rw-r--r-- | tools/perf/arch/x86/util/intel-pt.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/tools/perf/arch/x86/util/intel-pt.c b/tools/perf/arch/x86/util/intel-pt.c index 6fe667b3269e..9535be57033f 100644 --- a/tools/perf/arch/x86/util/intel-pt.c +++ b/tools/perf/arch/x86/util/intel-pt.c @@ -192,6 +192,7 @@ 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"); @@ -225,6 +226,10 @@ 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); |