xref: /linux/tools/perf/util/mem-info.c (revision 1a8c2e01) 
1 // SPDX-License-Identifier: GPL-2.0
2 #include <linux/zalloc.h>
3 #include "mem-info.h"
4 
mem_info__get(struct mem_info * mi)5 struct mem_info *mem_info__get(struct mem_info *mi)
6 {
7 	struct mem_info *result;
8 
9 	if (RC_CHK_GET(result, mi))
10 		refcount_inc(mem_info__refcnt(mi));
11 
12 	return result;
13 }
14 
mem_info__put(struct mem_info * mi)15 void mem_info__put(struct mem_info *mi)
16 {
17 	if (mi && refcount_dec_and_test(mem_info__refcnt(mi))) {
18 		addr_map_symbol__exit(mem_info__iaddr(mi));
19 		addr_map_symbol__exit(mem_info__daddr(mi));
20 		RC_CHK_FREE(mi);
21 	} else {
22 		RC_CHK_PUT(mi);
23 	}
24 }
25 
mem_info__new(void)26 struct mem_info *mem_info__new(void)
27 {
28 	struct mem_info *result = NULL;
29 	RC_STRUCT(mem_info) *mi = zalloc(sizeof(*mi));
30 
31 	if (ADD_RC_CHK(result, mi))
32 		refcount_set(mem_info__refcnt(result), 1);
33 
34 	return result;
35 }
36