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Commit aadddd68 authored by Jiri Olsa's avatar Jiri Olsa Committed by Arnaldo Carvalho de Melo
Browse files

perf c2c: Introduce c2c_decode_stats function 



Introducing c2c_decode_stats function, which decodes
data_src data into new struct c2c_stats.

Signed-off-by: default avatarJiri Olsa <jolsa@kernel.org>
Original-patch-by: default avatarDick Fowles <rfowles@redhat.com>
Original-patch-by: default avatarDon Zickus <dzickus@redhat.com>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Don Zickus <dzickus@redhat.com>
Cc: Joe Mario <jmario@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1474558645-19956-3-git-send-email-jolsa@kernel.org


Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
parent 10b37cb5

tools/perf/util/mem-events.c

+98 −0
Original line number Diff line number Diff line
@@ -9,6 +9,7 @@ 
#include "mem-events.h"

#include "debug.h"

#include "symbol.h"

#include "sort.h"



unsigned int perf_mem_events__loads_ldlat = 30;
@@ -268,3 +269,100 @@ int perf_script__meminfo_scnprintf(char *out, size_t sz, struct mem_info *mem_in 


	return i;

}



int c2c_decode_stats(struct c2c_stats *stats, struct mem_info *mi)

{

	union perf_mem_data_src *data_src = &mi->data_src;

	u64 daddr  = mi->daddr.addr;

	u64 op     = data_src->mem_op;

	u64 lvl    = data_src->mem_lvl;

	u64 snoop  = data_src->mem_snoop;

	u64 lock   = data_src->mem_lock;

	int err = 0;



#define P(a, b) PERF_MEM_##a##_##b



	stats->nr_entries++;



	if (lock & P(LOCK, LOCKED)) stats->locks++;



	if (op & P(OP, LOAD)) {

		/* load */

		stats->load++;



		if (!daddr) {

			stats->ld_noadrs++;

			return -1;

		}



		if (lvl & P(LVL, HIT)) {

			if (lvl & P(LVL, UNC)) stats->ld_uncache++;

			if (lvl & P(LVL, IO))  stats->ld_io++;

			if (lvl & P(LVL, LFB)) stats->ld_fbhit++;

			if (lvl & P(LVL, L1 )) stats->ld_l1hit++;

			if (lvl & P(LVL, L2 )) stats->ld_l2hit++;

			if (lvl & P(LVL, L3 )) {

				if (snoop & P(SNOOP, HITM))

					stats->lcl_hitm++;

				else

					stats->ld_llchit++;

			}



			if (lvl & P(LVL, LOC_RAM)) {

				stats->lcl_dram++;

				if (snoop & P(SNOOP, HIT))

					stats->ld_shared++;

				else

					stats->ld_excl++;

			}



			if ((lvl & P(LVL, REM_RAM1)) ||

			    (lvl & P(LVL, REM_RAM2))) {

				stats->rmt_dram++;

				if (snoop & P(SNOOP, HIT))

					stats->ld_shared++;

				else

					stats->ld_excl++;

			}

		}



		if ((lvl & P(LVL, REM_CCE1)) ||

		    (lvl & P(LVL, REM_CCE2))) {

			if (snoop & P(SNOOP, HIT))

				stats->rmt_hit++;

			else if (snoop & P(SNOOP, HITM))

				stats->rmt_hitm++;

		}



		if ((lvl & P(LVL, MISS)))

			stats->ld_miss++;



	} else if (op & P(OP, STORE)) {

		/* store */

		stats->store++;



		if (!daddr) {

			stats->st_noadrs++;

			return -1;

		}



		if (lvl & P(LVL, HIT)) {

			if (lvl & P(LVL, UNC)) stats->st_uncache++;

			if (lvl & P(LVL, L1 )) stats->st_l1hit++;

		}

		if (lvl & P(LVL, MISS))

			if (lvl & P(LVL, L1)) stats->st_l1miss++;

	} else {

		/* unparsable data_src? */

		stats->noparse++;

		return -1;

	}



	if (!mi->daddr.map || !mi->iaddr.map) {

		stats->nomap++;

		return -1;

	}



#undef P

	return err;

}

tools/perf/util/mem-events.h

+36 −0
Original line number Diff line number Diff line
@@ -2,6 +2,10 @@ 
#define __PERF_MEM_EVENTS_H



#include <stdbool.h>

#include <stdint.h>

#include <stdio.h>

#include <linux/types.h>

#include "stat.h"



struct perf_mem_event {

	bool		record;
@@ -33,4 +37,36 @@ int perf_mem__lck_scnprintf(char *out, size_t sz, struct mem_info *mem_info); 


int perf_script__meminfo_scnprintf(char *bf, size_t size, struct mem_info *mem_info);



struct c2c_stats {

	u32	nr_entries;



	u32	locks;               /* count of 'lock' transactions */

	u32	store;               /* count of all stores in trace */

	u32	st_uncache;          /* stores to uncacheable address */

	u32	st_noadrs;           /* cacheable store with no address */

	u32	st_l1hit;            /* count of stores that hit L1D */

	u32	st_l1miss;           /* count of stores that miss L1D */

	u32	load;                /* count of all loads in trace */

	u32	ld_excl;             /* exclusive loads, rmt/lcl DRAM - snp none/miss */

	u32	ld_shared;           /* shared loads, rmt/lcl DRAM - snp hit */

	u32	ld_uncache;          /* loads to uncacheable address */

	u32	ld_io;               /* loads to io address */

	u32	ld_miss;             /* loads miss */

	u32	ld_noadrs;           /* cacheable load with no address */

	u32	ld_fbhit;            /* count of loads hitting Fill Buffer */

	u32	ld_l1hit;            /* count of loads that hit L1D */

	u32	ld_l2hit;            /* count of loads that hit L2D */

	u32	ld_llchit;           /* count of loads that hit LLC */

	u32	lcl_hitm;            /* count of loads with local HITM  */

	u32	rmt_hitm;            /* count of loads with remote HITM */

	u32	rmt_hit;             /* count of loads with remote hit clean; */

	u32	lcl_dram;            /* count of loads miss to local DRAM */

	u32	rmt_dram;            /* count of loads miss to remote DRAM */

	u32	nomap;               /* count of load/stores with no phys adrs */

	u32	noparse;             /* count of unparsable data sources */

};



struct hist_entry;

int c2c_decode_stats(struct c2c_stats *stats, struct mem_info *mi);



#endif /* __PERF_MEM_EVENTS_H */