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Commit 003ccdc7 authored by Adrian Hunter's avatar Adrian Hunter Committed by Arnaldo Carvalho de Melo
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perf thread-stack: Accumulate IPC information 



Cycle and instruction counts are added to the stack. The IPC of a
function and all functions it calls, is also recorded.

Signed-off-by: default avatarAdrian Hunter <adrian.hunter@intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Link: http://lkml.kernel.org/r/20190520113728.14389-14-adrian.hunter@intel.com


Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
parent 5db47f43

tools/perf/util/thread-stack.c

+14 −0
Original line number Original line Diff line number Diff line
@@ -49,6 +49,8 @@ enum retpoline_state_t { 
 * @timestamp: timestamp (if known)

 * @timestamp: timestamp (if known)

 * @ref: external reference (e.g. db_id of sample)

 * @ref: external reference (e.g. db_id of sample)

 * @branch_count: the branch count when the entry was created

 * @branch_count: the branch count when the entry was created

 * @insn_count: the instruction count when the entry was created

 * @cyc_count the cycle count when the entry was created

 * @db_id: id used for db-export

 * @db_id: id used for db-export

 * @cp: call path

 * @cp: call path

 * @no_call: a 'call' was not seen

 * @no_call: a 'call' was not seen
@@ -60,6 +62,8 @@ struct thread_stack_entry { 
	u64 timestamp;

	u64 timestamp;

	u64 ref;

	u64 ref;

	u64 branch_count;

	u64 branch_count;

	u64 insn_count;

	u64 cyc_count;

	u64 db_id;

	u64 db_id;

	struct call_path *cp;

	struct call_path *cp;

	bool no_call;

	bool no_call;
@@ -75,6 +79,8 @@ struct thread_stack_entry { 
 * @sz: current maximum stack size

 * @sz: current maximum stack size

 * @trace_nr: current trace number

 * @trace_nr: current trace number

 * @branch_count: running branch count

 * @branch_count: running branch count

 * @insn_count: running  instruction count

 * @cyc_count running  cycle count

 * @kernel_start: kernel start address

 * @kernel_start: kernel start address

 * @last_time: last timestamp

 * @last_time: last timestamp

 * @crp: call/return processor

 * @crp: call/return processor
@@ -88,6 +94,8 @@ struct thread_stack { 
	size_t sz;

	size_t sz;

	u64 trace_nr;

	u64 trace_nr;

	u64 branch_count;

	u64 branch_count;

	u64 insn_count;

	u64 cyc_count;

	u64 kernel_start;

	u64 kernel_start;

	u64 last_time;

	u64 last_time;

	struct call_return_processor *crp;

	struct call_return_processor *crp;
@@ -289,6 +297,8 @@ static int thread_stack__call_return(struct thread *thread, 
	cr.call_time = tse->timestamp;

	cr.call_time = tse->timestamp;

	cr.return_time = timestamp;

	cr.return_time = timestamp;

	cr.branch_count = ts->branch_count - tse->branch_count;

	cr.branch_count = ts->branch_count - tse->branch_count;

	cr.insn_count = ts->insn_count - tse->insn_count;

	cr.cyc_count = ts->cyc_count - tse->cyc_count;

	cr.db_id = tse->db_id;

	cr.db_id = tse->db_id;

	cr.call_ref = tse->ref;

	cr.call_ref = tse->ref;

	cr.return_ref = ref;

	cr.return_ref = ref;
@@ -544,6 +554,8 @@ static int thread_stack__push_cp(struct thread_stack *ts, u64 ret_addr, 
	tse->timestamp = timestamp;

	tse->timestamp = timestamp;

	tse->ref = ref;

	tse->ref = ref;

	tse->branch_count = ts->branch_count;

	tse->branch_count = ts->branch_count;

	tse->insn_count = ts->insn_count;

	tse->cyc_count = ts->cyc_count;

	tse->cp = cp;

	tse->cp = cp;

	tse->no_call = no_call;

	tse->no_call = no_call;

	tse->trace_end = trace_end;

	tse->trace_end = trace_end;
@@ -874,6 +886,8 @@ int thread_stack__process(struct thread *thread, struct comm *comm, 
	}

	}





	ts->branch_count += 1;

	ts->branch_count += 1;

	ts->insn_count += sample->insn_cnt;

	ts->cyc_count += sample->cyc_cnt;

	ts->last_time = sample->time;

	ts->last_time = sample->time;





	if (sample->flags & PERF_IP_FLAG_CALL) {

	if (sample->flags & PERF_IP_FLAG_CALL) {

tools/perf/util/thread-stack.h

+4 −0
Original line number Original line Diff line number Diff line
@@ -52,6 +52,8 @@ enum { 
 * @call_time: timestamp of call (if known)

 * @call_time: timestamp of call (if known)

 * @return_time: timestamp of return (if known)

 * @return_time: timestamp of return (if known)

 * @branch_count: number of branches seen between call and return

 * @branch_count: number of branches seen between call and return

 * @insn_count: approx. number of instructions between call and return

 * @cyc_count: approx. number of cycles between call and return

 * @call_ref: external reference to 'call' sample (e.g. db_id)

 * @call_ref: external reference to 'call' sample (e.g. db_id)

 * @return_ref:  external reference to 'return' sample (e.g. db_id)

 * @return_ref:  external reference to 'return' sample (e.g. db_id)

 * @db_id: id used for db-export

 * @db_id: id used for db-export
@@ -65,6 +67,8 @@ struct call_return { 
	u64 call_time;

	u64 call_time;

	u64 return_time;

	u64 return_time;

	u64 branch_count;

	u64 branch_count;

	u64 insn_count;

	u64 cyc_count;

	u64 call_ref;

	u64 call_ref;

	u64 return_ref;

	u64 return_ref;

	u64 db_id;

	u64 db_id;