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![Ian Rogers](/assets/img/avatar_default.png)
Address/leak sanitizer with reference count checking can identify the location of leaks, so use put rather than delete to avoid free-ing memory when the reference count is >1. Add maps__zput to ensure the variable is cleared. Signed-off-by: Ian Rogers <irogers@google.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Ali Saidi <alisaidi@amazon.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Athira Rajeev <atrajeev@linux.vnet.ibm.com> Cc: Brian Robbins <brianrob@linux.microsoft.com> Cc: Changbin Du <changbin.du@huawei.com> Cc: Dmitrii Dolgov <9erthalion6@gmail.com> Cc: Fangrui Song <maskray@google.com> Cc: German Gomez <german.gomez@arm.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Ivan Babrou <ivan@cloudflare.com> Cc: James Clark <james.clark@arm.com> Cc: Jing Zhang <renyu.zj@linux.alibaba.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: John Garry <john.g.garry@oracle.com> Cc: K Prateek Nayak <kprateek.nayak@amd.com> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Leo Yan <leo.yan@linaro.org> Cc: Liam Howlett <liam.howlett@oracle.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Miguel Ojeda <ojeda@kernel.org> Cc: Mike Leach <mike.leach@linaro.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Ravi Bangoria <ravi.bangoria@amd.com> Cc: Sean Christopherson <seanjc@google.com> Cc: Steinar H. Gunderson <sesse@google.com> Cc: Suzuki Poulouse <suzuki.poulose@arm.com> Cc: Wenyu Liu <liuwenyu7@huawei.com> Cc: Will Deacon <will@kernel.org> Cc: Yang Jihong <yangjihong1@huawei.com> Cc: Ye Xingchen <ye.xingchen@zte.com.cn> Cc: Yuan Can <yuancan@huawei.com> Cc: coresight@lists.linaro.org Cc: linux-arm-kernel@lists.infradead.org Link: https://lore.kernel.org/r/20230608232823.4027869-5-irogers@google.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
136 lines
3.4 KiB
C
136 lines
3.4 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef __PERF_MAPS_H
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#define __PERF_MAPS_H
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#include <linux/refcount.h>
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#include <linux/rbtree.h>
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#include <stdio.h>
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#include <stdbool.h>
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#include <linux/types.h>
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#include "rwsem.h"
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#include <internal/rc_check.h>
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struct ref_reloc_sym;
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struct machine;
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struct map;
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struct maps;
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struct thread;
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struct map_rb_node {
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struct rb_node rb_node;
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struct map *map;
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};
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struct map_rb_node *maps__first(struct maps *maps);
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struct map_rb_node *map_rb_node__next(struct map_rb_node *node);
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struct map_rb_node *maps__find_node(struct maps *maps, struct map *map);
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struct map *maps__find(struct maps *maps, u64 addr);
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#define maps__for_each_entry(maps, map) \
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for (map = maps__first(maps); map; map = map_rb_node__next(map))
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#define maps__for_each_entry_safe(maps, map, next) \
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for (map = maps__first(maps), next = map_rb_node__next(map); map; \
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map = next, next = map_rb_node__next(map))
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DECLARE_RC_STRUCT(maps) {
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struct rb_root entries;
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struct rw_semaphore lock;
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struct machine *machine;
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struct map *last_search_by_name;
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struct map **maps_by_name;
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refcount_t refcnt;
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unsigned int nr_maps;
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unsigned int nr_maps_allocated;
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#ifdef HAVE_LIBUNWIND_SUPPORT
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void *addr_space;
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const struct unwind_libunwind_ops *unwind_libunwind_ops;
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#endif
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};
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#define KMAP_NAME_LEN 256
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struct kmap {
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struct ref_reloc_sym *ref_reloc_sym;
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struct maps *kmaps;
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char name[KMAP_NAME_LEN];
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};
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struct maps *maps__new(struct machine *machine);
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bool maps__empty(struct maps *maps);
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int maps__clone(struct thread *thread, struct maps *parent);
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struct maps *maps__get(struct maps *maps);
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void maps__put(struct maps *maps);
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static inline void __maps__zput(struct maps **map)
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{
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maps__put(*map);
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*map = NULL;
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}
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#define maps__zput(map) __maps__zput(&map)
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static inline struct rb_root *maps__entries(struct maps *maps)
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{
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return &RC_CHK_ACCESS(maps)->entries;
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}
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static inline struct machine *maps__machine(struct maps *maps)
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{
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return RC_CHK_ACCESS(maps)->machine;
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}
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static inline struct rw_semaphore *maps__lock(struct maps *maps)
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{
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return &RC_CHK_ACCESS(maps)->lock;
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}
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static inline struct map **maps__maps_by_name(struct maps *maps)
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{
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return RC_CHK_ACCESS(maps)->maps_by_name;
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}
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static inline unsigned int maps__nr_maps(const struct maps *maps)
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{
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return RC_CHK_ACCESS(maps)->nr_maps;
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}
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static inline refcount_t *maps__refcnt(struct maps *maps)
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{
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return &RC_CHK_ACCESS(maps)->refcnt;
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}
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#ifdef HAVE_LIBUNWIND_SUPPORT
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static inline void *maps__addr_space(struct maps *maps)
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{
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return RC_CHK_ACCESS(maps)->addr_space;
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}
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static inline const struct unwind_libunwind_ops *maps__unwind_libunwind_ops(const struct maps *maps)
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{
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return RC_CHK_ACCESS(maps)->unwind_libunwind_ops;
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}
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#endif
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size_t maps__fprintf(struct maps *maps, FILE *fp);
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int maps__insert(struct maps *maps, struct map *map);
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void maps__remove(struct maps *maps, struct map *map);
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struct symbol *maps__find_symbol(struct maps *maps, u64 addr, struct map **mapp);
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struct symbol *maps__find_symbol_by_name(struct maps *maps, const char *name, struct map **mapp);
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struct addr_map_symbol;
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int maps__find_ams(struct maps *maps, struct addr_map_symbol *ams);
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int maps__fixup_overlappings(struct maps *maps, struct map *map, FILE *fp);
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struct map *maps__find_by_name(struct maps *maps, const char *name);
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int maps__merge_in(struct maps *kmaps, struct map *new_map);
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void __maps__sort_by_name(struct maps *maps);
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#endif // __PERF_MAPS_H
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