perf mem-info: Add reference count checking

Add reference count checking and switch 'struct mem_info' usage to use
accessor functions.

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/20240507183545.1236093-8-irogers@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
diff --git a/tools/perf/builtin-c2c.c b/tools/perf/builtin-c2c.c
index c624414..c157bd3 100644
--- a/tools/perf/builtin-c2c.c
+++ b/tools/perf/builtin-c2c.c
@@ -530,7 +530,7 @@ static int dcacheline_entry(struct perf_hpp_fmt *fmt, struct perf_hpp *hpp,
 	char buf[20];
 
 	if (he->mem_info)
-		addr = cl_address(he->mem_info->daddr.addr, chk_double_cl);
+		addr = cl_address(mem_info__daddr(he->mem_info)->addr, chk_double_cl);
 
 	return scnprintf(hpp->buf, hpp->size, "%*s", width, HEX_STR(buf, addr));
 }
@@ -568,7 +568,7 @@ static int offset_entry(struct perf_hpp_fmt *fmt, struct perf_hpp *hpp,
 	char buf[20];
 
 	if (he->mem_info)
-		addr = cl_offset(he->mem_info->daddr.al_addr, chk_double_cl);
+		addr = cl_offset(mem_info__daddr(he->mem_info)->al_addr, chk_double_cl);
 
 	return scnprintf(hpp->buf, hpp->size, "%*s", width, HEX_STR(buf, addr));
 }
@@ -580,10 +580,10 @@ offset_cmp(struct perf_hpp_fmt *fmt __maybe_unused,
 	uint64_t l = 0, r = 0;
 
 	if (left->mem_info)
-		l = cl_offset(left->mem_info->daddr.addr, chk_double_cl);
+		l = cl_offset(mem_info__daddr(left->mem_info)->addr, chk_double_cl);
 
 	if (right->mem_info)
-		r = cl_offset(right->mem_info->daddr.addr, chk_double_cl);
+		r = cl_offset(mem_info__daddr(right->mem_info)->addr, chk_double_cl);
 
 	return (int64_t)(r - l);
 }
@@ -597,7 +597,7 @@ iaddr_entry(struct perf_hpp_fmt *fmt, struct perf_hpp *hpp,
 	char buf[20];
 
 	if (he->mem_info)
-		addr = he->mem_info->iaddr.addr;
+		addr = mem_info__iaddr(he->mem_info)->addr;
 
 	return scnprintf(hpp->buf, hpp->size, "%*s", width, HEX_STR(buf, addr));
 }
@@ -2593,7 +2593,7 @@ perf_c2c_cacheline_browser__title(struct hist_browser *browser,
 	he = cl_browser->he;
 
 	if (he->mem_info)
-		addr = cl_address(he->mem_info->daddr.addr, chk_double_cl);
+		addr = cl_address(mem_info__daddr(he->mem_info)->addr, chk_double_cl);
 
 	scnprintf(bf, size, "Cacheline 0x%lx", addr);
 	return 0;