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add option for perf event attr inherit #16

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Jul 2, 2024
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8 changes: 6 additions & 2 deletions collectors/perf.cpp
Original file line number Diff line number Diff line change
Expand Up @@ -82,9 +82,12 @@ static inline uint64_t makeup_booker_ci_config(int nodetype, int eventid, int by
PerfCollector::PerfCollector(const Json::Value& config, const std::string& name) : Collector(config, name)
{
struct event leader = {"CPUCycleCount", PERF_TYPE_HARDWARE, PERF_COUNT_HW_CPU_CYCLES};
mEvents.push_back(leader);

mSet = mConfig.get("set", -1).asInt();
mInherit = mConfig.get("inherit", 1).asInt();

leader.inherited = mInherit;
mEvents.push_back(leader);

if ((0 <= mSet) && (mSet <= 3))
{
Expand Down Expand Up @@ -114,6 +117,7 @@ PerfCollector::PerfCollector(const Json::Value& config, const std::string& name)
e.booker_ci = item.get("booker-ci", 0).asInt();
e.cspmu = item.get("CSPMU", 0).asInt();
e.device = item.get("device", "").asString();
e.inherited = mInherit;

if (e.booker_ci)
{ // booker-ci counter
Expand Down Expand Up @@ -213,7 +217,7 @@ static int add_event(const struct event &e, int tid, int cpu, int group = -1)
pe.config = e.config;
pe.config1 = (e.len == hw_cnt_length::b32) ? 0 : 1;
pe.disabled = 1;
pe.inherit = 1;
pe.inherit = e.inherited;
pe.exclude_user = e.exc_user;
pe.exclude_kernel = e.exc_kernel;
pe.exclude_hv = 0;
Expand Down
2 changes: 2 additions & 0 deletions collectors/perf.hpp
Original file line number Diff line number Diff line change
Expand Up @@ -50,6 +50,7 @@ struct event {
bool booker_ci; // default is false
bool cspmu;
std::string device; // default is ""
uint32_t inherited; // default is 1
};

class event_context
Expand Down Expand Up @@ -107,6 +108,7 @@ class PerfCollector : public Collector

private:
int mSet = -1;
int mInherit = 1;
bool mAllThread = true;
std::vector<struct event> mEvents;
std::vector<struct event> mBookerEvents;
Expand Down
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