[PATCH V2 32/37] perf intel-pt: Move code in intel_pt_synth_events() to simplify attr setting

Adrian Hunter
2017-05-26T08:26:09Z

intel_pt_synth_events() uses the same attr structure to create each event.
Move the code around a bit to simplify that.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
---
tools/perf/util/intel-pt.c | 45 ++++++++++++++++++++++-----------------------
1 file changed, 22 insertions(+), 23 deletions(-)

diff --git a/tools/perf/util/intel-pt.c b/tools/perf/util/intel-pt.c
index a20712e1ed28..ace79a405f98 100644
--- a/tools/perf/util/intel-pt.c
+++ b/tools/perf/util/intel-pt.c
@@ -1997,6 +1997,25 @@ static int intel_pt_synth_events(struct intel_pt *pt,
if (!id)
id = 1;

+ if (pt->synth_opts.branches) {
+ attr.config = PERF_COUNT_HW_BRANCH_INSTRUCTIONS;
+ attr.sample_period = 1;
+ attr.sample_type |= PERF_SAMPLE_ADDR;
+ err = intel_pt_synth_event(session, "branches", &attr, id);
+ if (err)
+ return err;
+ pt->sample_branches = true;
+ pt->branches_sample_type = attr.sample_type;
+ pt->branches_id = id;
+ id += 1;
+ attr.sample_type &= ~(u64)PERF_SAMPLE_ADDR;
+ }
+
+ if (pt->synth_opts.callchain)
+ attr.sample_type |= PERF_SAMPLE_CALLCHAIN;
+ if (pt->synth_opts.last_branch)
+ attr.sample_type |= PERF_SAMPLE_BRANCH_STACK;
+
if (pt->synth_opts.instructions) {
attr.config = PERF_COUNT_HW_INSTRUCTIONS;
if (pt->synth_opts.period_type == PERF_ITRACE_PERIOD_NANOSECS)
@@ -2004,10 +2023,6 @@ static int intel_pt_synth_events(struct intel_pt *pt,
intel_pt_ns_to_ticks(pt, pt->synth_opts.period);
else
attr.sample_period = pt->synth_opts.period;
- if (pt->synth_opts.callchain)
- attr.sample_type |= PERF_SAMPLE_CALLCHAIN;
- if (pt->synth_opts.last_branch)
- attr.sample_type |= PERF_SAMPLE_BRANCH_STACK;
err = intel_pt_synth_event(session, "instructions", &attr, id);
if (err)
return err;
@@ -2017,13 +2032,11 @@ static int intel_pt_synth_events(struct intel_pt *pt,
id += 1;
}

+ attr.sample_type &= ~(u64)PERF_SAMPLE_PERIOD;
+ attr.sample_period = 1;
+
if (pt->synth_opts.transactions) {
attr.config = PERF_COUNT_HW_INSTRUCTIONS;
- attr.sample_period = 1;
- if (pt->synth_opts.callchain)
- attr.sample_type |= PERF_SAMPLE_CALLCHAIN;
- if (pt->synth_opts.last_branch)
- attr.sample_type |= PERF_SAMPLE_BRANCH_STACK;
err = intel_pt_synth_event(session, "transactions", &attr, id);
if (err)
return err;
@@ -2034,20 +2047,6 @@ static int intel_pt_synth_events(struct intel_pt *pt,
id += 1;
}

- if (pt->synth_opts.branches) {
- attr.config = PERF_COUNT_HW_BRANCH_INSTRUCTIONS;
- attr.sample_period = 1;
- attr.sample_type |= PERF_SAMPLE_ADDR;
- attr.sample_type &= ~(u64)PERF_SAMPLE_CALLCHAIN;
- attr.sample_type &= ~(u64)PERF_SAMPLE_BRANCH_STACK;
- err = intel_pt_synth_event(session, "branches", &attr, id);
- if (err)
- return err;
- pt->sample_branches = true;
- pt->branches_sample_type = attr.sample_type;
- pt->branches_id = id;
- }
-
pt->synth_needs_swap = evsel->needs_swap;

return 0;
--
1.9.1