perf mem-info: Move mem-info out of mem-events and symbol

Move mem-info to its own header rather than having it split between
mem-events and symbol.

Signed-off-by: Ian Rogers <irogers@google.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Athira Rajeev <atrajeev@linux.vnet.ibm.com>
Cc: Ben Gainey <ben.gainey@arm.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: James Clark <james.clark@arm.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: K Prateek Nayak <kprateek.nayak@amd.com>
Cc: Kajol Jain <kjain@linux.ibm.com>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Li Dong <lidong@vivo.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Oliver Upton <oliver.upton@linux.dev>
Cc: Paran Lee <p4ranlee@gmail.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Ravi Bangoria <ravi.bangoria@amd.com>
Cc: Sun Haiyong <sunhaiyong@loongson.cn>
Cc: Tim Chen <tim.c.chen@linux.intel.com>
Cc: Yanteng Si <siyanteng@loongson.cn>
Cc: Yicong Yang <yangyicong@hisilicon.com>
Link: https://lore.kernel.org/r/20240507183545.1236093-7-irogers@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

Author: captain5050

tools/perf/builtin-c2c.c

@@ -38,6 +38,7 @@
 #include "ui/browsers/hists.h"
 #include "thread.h"
 #include "mem2node.h"
+#include "mem-info.h"
 #include "symbol.h"
 #include "ui/ui.h"
 #include "ui/progress.h"

tools/perf/builtin-report.c

@@ -31,6 +31,7 @@
 #include "util/evsel.h"
 #include "util/evswitch.h"
 #include "util/header.h"
+#include "util/mem-info.h"
 #include "util/session.h"
 #include "util/srcline.h"
 #include "util/tool.h"

tools/perf/builtin-script.c

@@ -32,6 +32,7 @@
 #include "util/time-utils.h"
 #include "util/path.h"
 #include "util/event.h"
+#include "util/mem-info.h"
 #include "ui/ui.h"
 #include "print_binary.h"
 #include "print_insn.h"

tools/perf/tests/mem.c

@@ -1,6 +1,7 @@
 // SPDX-License-Identifier: GPL-2.0
 #include "util/map_symbol.h"
 #include "util/mem-events.h"
+#include "util/mem-info.h"
 #include "util/symbol.h"
 #include "linux/perf_event.h"
 #include "util/debug.h"

tools/perf/util/Build

@@ -141,6 +141,7 @@ perf-y += term.o
 perf-y += help-unknown-cmd.o
 perf-y += dlfilter.o
 perf-y += mem-events.o
+perf-y += mem-info.o
 perf-y += vsprintf.o
 perf-y += units.o
 perf-y += time-utils.o

tools/perf/util/hist.c

@@ -9,6 +9,7 @@
 #include "map_symbol.h"
 #include "branch.h"
 #include "mem-events.h"
+#include "mem-info.h"
 #include "session.h"
 #include "namespaces.h"
 #include "cgroup.h"

tools/perf/util/machine.c

@@ -16,6 +16,7 @@
 #include "map_symbol.h"
 #include "branch.h"
 #include "mem-events.h"
+#include "mem-info.h"
 #include "path.h"
 #include "srcline.h"
 #include "symbol.h"

tools/perf/util/mem-events.c

@@ -10,7 +10,9 @@
 #include <linux/kernel.h>
 #include "map_symbol.h"
 #include "mem-events.h"
+#include "mem-info.h"
 #include "debug.h"
+#include "evsel.h"
 #include "symbol.h"
 #include "pmu.h"
 #include "pmus.h"
@@ -281,7 +283,7 @@ static const char * const tlb_access[] = {
 	"Fault",
 };
 
-int perf_mem__tlb_scnprintf(char *out, size_t sz, struct mem_info *mem_info)
+int perf_mem__tlb_scnprintf(char *out, size_t sz, const struct mem_info *mem_info)
 {
 	size_t l = 0, i;
 	u64 m = PERF_MEM_TLB_NA;
@@ -359,7 +361,7 @@ static const char * const mem_hops[] = {
 	"board",
 };
 
-static int perf_mem__op_scnprintf(char *out, size_t sz, struct mem_info *mem_info)
+static int perf_mem__op_scnprintf(char *out, size_t sz, const struct mem_info *mem_info)
 {
 	u64 op = PERF_MEM_LOCK_NA;
 	int l;
@@ -383,7 +385,7 @@ static int perf_mem__op_scnprintf(char *out, size_t sz, struct mem_info *mem_inf
 	return l;
 }
 
-int perf_mem__lvl_scnprintf(char *out, size_t sz, struct mem_info *mem_info)
+int perf_mem__lvl_scnprintf(char *out, size_t sz, const struct mem_info *mem_info)
 {
 	union perf_mem_data_src data_src;
 	int printed = 0;
@@ -465,7 +467,7 @@ static const char * const snoopx_access[] = {
 	"Peer",
 };
 
-int perf_mem__snp_scnprintf(char *out, size_t sz, struct mem_info *mem_info)
+int perf_mem__snp_scnprintf(char *out, size_t sz, const struct mem_info *mem_info)
 {
 	size_t i, l = 0;
 	u64 m = PERF_MEM_SNOOP_NA;
@@ -507,7 +509,7 @@ int perf_mem__snp_scnprintf(char *out, size_t sz, struct mem_info *mem_info)
 	return l;
 }
 
-int perf_mem__lck_scnprintf(char *out, size_t sz, struct mem_info *mem_info)
+int perf_mem__lck_scnprintf(char *out, size_t sz, const struct mem_info *mem_info)
 {
 	u64 mask = PERF_MEM_LOCK_NA;
 	int l;
@@ -525,7 +527,7 @@ int perf_mem__lck_scnprintf(char *out, size_t sz, struct mem_info *mem_info)
 	return l;
 }
 
-int perf_mem__blk_scnprintf(char *out, size_t sz, struct mem_info *mem_info)
+int perf_mem__blk_scnprintf(char *out, size_t sz, const struct mem_info *mem_info)
 {
 	size_t l = 0;
 	u64 mask = PERF_MEM_BLK_NA;
@@ -548,7 +550,7 @@ int perf_mem__blk_scnprintf(char *out, size_t sz, struct mem_info *mem_info)
 	return l;
 }
 
-int perf_script__meminfo_scnprintf(char *out, size_t sz, struct mem_info *mem_info)
+int perf_script__meminfo_scnprintf(char *out, size_t sz, const struct mem_info *mem_info)
 {
 	int i = 0;
 

tools/perf/util/mem-events.h

@@ -3,13 +3,7 @@
 #define __PERF_MEM_EVENTS_H
 
 #include <stdbool.h>
-#include <stdint.h>
-#include <stdio.h>
 #include <linux/types.h>
-#include <linux/refcount.h>
-#include <linux/perf_event.h>
-#include "stat.h"
-#include "evsel.h"
 
 struct perf_mem_event {
 	bool		record;
@@ -21,20 +15,17 @@ struct perf_mem_event {
 	const char	*event_name;
 };
 
-struct mem_info {
-	struct addr_map_symbol	iaddr;
-	struct addr_map_symbol	daddr;
-	union perf_mem_data_src	data_src;
-	refcount_t		refcnt;
-};
-
 enum {
 	PERF_MEM_EVENTS__LOAD,
 	PERF_MEM_EVENTS__STORE,
 	PERF_MEM_EVENTS__LOAD_STORE,
 	PERF_MEM_EVENTS__MAX,
 };
 
+struct evsel;
+struct mem_info;
+struct perf_pmu;
+
 extern unsigned int perf_mem_events__loads_ldlat;
 extern struct perf_mem_event perf_mem_events[PERF_MEM_EVENTS__MAX];
 
@@ -49,13 +40,13 @@ bool is_mem_loads_aux_event(struct evsel *leader);
 void perf_pmu__mem_events_list(struct perf_pmu *pmu);
 int perf_mem_events__record_args(const char **rec_argv, int *argv_nr);
 
-int perf_mem__tlb_scnprintf(char *out, size_t sz, struct mem_info *mem_info);
-int perf_mem__lvl_scnprintf(char *out, size_t sz, struct mem_info *mem_info);
-int perf_mem__snp_scnprintf(char *out, size_t sz, struct mem_info *mem_info);
-int perf_mem__lck_scnprintf(char *out, size_t sz, struct mem_info *mem_info);
-int perf_mem__blk_scnprintf(char *out, size_t sz, struct mem_info *mem_info);
+int perf_mem__tlb_scnprintf(char *out, size_t sz, const struct mem_info *mem_info);
+int perf_mem__lvl_scnprintf(char *out, size_t sz, const struct mem_info *mem_info);
+int perf_mem__snp_scnprintf(char *out, size_t sz, const struct mem_info *mem_info);
+int perf_mem__lck_scnprintf(char *out, size_t sz, const struct mem_info *mem_info);
+int perf_mem__blk_scnprintf(char *out, size_t sz, const struct mem_info *mem_info);
 
-int perf_script__meminfo_scnprintf(char *bf, size_t size, struct mem_info *mem_info);
+int perf_script__meminfo_scnprintf(char *bf, size_t size, const struct mem_info *mem_info);
 
 struct c2c_stats {
 	u32	nr_entries;

tools/perf/util/mem-info.c

@@ -0,0 +1,28 @@
+// SPDX-License-Identifier: GPL-2.0
+#include <linux/zalloc.h>
+#include "mem-info.h"
+
+struct mem_info *mem_info__get(struct mem_info *mi)
+{
+	if (mi)
+		refcount_inc(&mi->refcnt);
+	return mi;
+}
+
+void mem_info__put(struct mem_info *mi)
+{
+	if (mi && refcount_dec_and_test(&mi->refcnt)) {
+		addr_map_symbol__exit(&mi->iaddr);
+		addr_map_symbol__exit(&mi->daddr);
+		free(mi);
+	}
+}
+
+struct mem_info *mem_info__new(void)
+{
+	struct mem_info *mi = zalloc(sizeof(*mi));
+
+	if (mi)
+		refcount_set(&mi->refcnt, 1);
+	return mi;
+}