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: Jiri Olsa <jolsa@kernel.org>
Original-patch-by: Dick Fowles <rfowles@redhat.com>
Original-patch-by: Don 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: Arnaldo Carvalho de Melo <acme@redhat.com>

tools/perf/util/mem-events.c

@@ -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

@@ -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 */