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| author | Arnaldo Carvalho de Melo <acme@redhat.com> | 2015-06-01 15:40:01 -0300 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2015-06-08 10:31:40 -0300 |
| commit | e88078442232f3bbcb4ff1d24b3f9ab3dca472b9 (patch) | |
| tree | d755616b5eb4d95607e4d75f36f221b9e7de4972 /tools/perf/util/dso.h | |
| parent | 9f2de31542f1ac38a15117f90ee6b8449951d86e (diff) | |
| download | lwn-e88078442232f3bbcb4ff1d24b3f9ab3dca472b9.tar.gz lwn-e88078442232f3bbcb4ff1d24b3f9ab3dca472b9.zip | |
perf tools: Protect accesses the dso rbtrees/lists with a rw lock
To allow concurrent access, next step: refcount struct dso instances, so
that we can ditch unused them when the last map pointing to it goes
away.
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: http://lkml.kernel.org/n/tip-yk1k08etpd2aoe3tnrf0oizn@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/util/dso.h')
| -rw-r--r-- | tools/perf/util/dso.h | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/tools/perf/util/dso.h b/tools/perf/util/dso.h index ba2d90ed881f..c16ab5d849c3 100644 --- a/tools/perf/util/dso.h +++ b/tools/perf/util/dso.h @@ -4,6 +4,7 @@ #include <linux/types.h> #include <linux/rbtree.h> #include <stdbool.h> +#include <pthread.h> #include <linux/types.h> #include <linux/bitops.h> #include "map.h" @@ -124,6 +125,7 @@ struct dso_cache { struct dsos { struct list_head head; struct rb_root root; /* rbtree root sorted by long name */ + pthread_rwlock_t lock; }; struct auxtrace_cache; @@ -297,11 +299,13 @@ struct map *dso__new_map(const char *name); struct dso *machine__findnew_kernel(struct machine *machine, const char *name, const char *short_name, int dso_type); +void __dsos__add(struct dsos *dsos, struct dso *dso); void dsos__add(struct dsos *dsos, struct dso *dso); -struct dso *dsos__addnew(struct dsos *dsos, const char *name); -struct dso *dsos__find(const struct dsos *dsos, const char *name, - bool cmp_short); +struct dso *__dsos__addnew(struct dsos *dsos, const char *name); +struct dso *__dsos__find(struct dsos *dsos, const char *name, bool cmp_short); +struct dso *dsos__find(struct dsos *dsos, const char *name, bool cmp_short); struct dso *__dsos__findnew(struct dsos *dsos, const char *name); +struct dso *dsos__findnew(struct dsos *dsos, const char *name); bool __dsos__read_build_ids(struct list_head *head, bool with_hits); size_t __dsos__fprintf_buildid(struct list_head *head, FILE *fp, |