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-rw-r--r--tools/perf/util/machine.c4
-rw-r--r--tools/perf/util/machine.h3
-rw-r--r--tools/perf/util/session.c2
-rw-r--r--tools/perf/util/vdso.c39
-rw-r--r--tools/perf/util/vdso.h2
5 files changed, 37 insertions, 13 deletions
diff --git a/tools/perf/util/machine.c b/tools/perf/util/machine.c
index a25f3ee1b5b3..65269b8ac186 100644
--- a/tools/perf/util/machine.c
+++ b/tools/perf/util/machine.c
@@ -8,6 +8,7 @@
#include "sort.h"
#include "strlist.h"
#include "thread.h"
+#include "vdso.h"
#include <stdbool.h>
#include <symbol/kallsyms.h>
#include "unwind.h"
@@ -23,6 +24,8 @@ int machine__init(struct machine *machine, const char *root_dir, pid_t pid)
INIT_LIST_HEAD(&machine->dead_threads);
machine->last_match = NULL;
+ machine->vdso_info = NULL;
+
machine->kmaps.machine = machine;
machine->pid = pid;
@@ -105,6 +108,7 @@ void machine__exit(struct machine *machine)
map_groups__exit(&machine->kmaps);
dsos__delete(&machine->user_dsos);
dsos__delete(&machine->kernel_dsos);
+ vdso__exit(machine);
zfree(&machine->root_dir);
zfree(&machine->current_tid);
}
diff --git a/tools/perf/util/machine.h b/tools/perf/util/machine.h
index 8771d0cbe9cb..b972824e6294 100644
--- a/tools/perf/util/machine.h
+++ b/tools/perf/util/machine.h
@@ -20,6 +20,8 @@ union perf_event;
extern const char *ref_reloc_sym_names[];
+struct vdso_info;
+
struct machine {
struct rb_node rb_node;
pid_t pid;
@@ -28,6 +30,7 @@ struct machine {
struct rb_root threads;
struct list_head dead_threads;
struct thread *last_match;
+ struct vdso_info *vdso_info;
struct list_head user_dsos;
struct list_head kernel_dsos;
struct map_groups kmaps;
diff --git a/tools/perf/util/session.c b/tools/perf/util/session.c
index d3da1055239f..fab5838c06be 100644
--- a/tools/perf/util/session.c
+++ b/tools/perf/util/session.c
@@ -14,7 +14,6 @@
#include "util.h"
#include "cpumap.h"
#include "perf_regs.h"
-#include "vdso.h"
static int perf_session__open(struct perf_session *session)
{
@@ -156,7 +155,6 @@ void perf_session__delete(struct perf_session *session)
if (session->file)
perf_data_file__close(session->file);
free(session);
- vdso__exit();
}
static int process_event_synth_tracing_data_stub(struct perf_tool *tool
diff --git a/tools/perf/util/vdso.c b/tools/perf/util/vdso.c
index 75245f081b60..fdaccaf67371 100644
--- a/tools/perf/util/vdso.c
+++ b/tools/perf/util/vdso.c
@@ -28,14 +28,17 @@ struct vdso_info {
struct vdso_file vdso;
};
-static struct vdso_info vdso_info_ = {
- .vdso = {
- .temp_file_name = VDSO__TEMP_FILE_NAME,
- .dso_name = VDSO__MAP_NAME,
- },
-};
-
-static struct vdso_info *vdso_info = &vdso_info_;
+static struct vdso_info *vdso_info__new(void)
+{
+ static const struct vdso_info vdso_info_init = {
+ .vdso = {
+ .temp_file_name = VDSO__TEMP_FILE_NAME,
+ .dso_name = VDSO__MAP_NAME,
+ },
+ };
+
+ return memdup(&vdso_info_init, sizeof(vdso_info_init));
+}
static int find_vdso_map(void **start, void **end)
{
@@ -105,16 +108,32 @@ static char *get_file(struct vdso_file *vdso_file)
return vdso;
}
-void vdso__exit(void)
+void vdso__exit(struct machine *machine)
{
+ struct vdso_info *vdso_info = machine->vdso_info;
+
+ if (!vdso_info)
+ return;
+
if (vdso_info->vdso.found)
unlink(vdso_info->vdso.temp_file_name);
+
+ zfree(&machine->vdso_info);
}
struct dso *vdso__dso_findnew(struct machine *machine)
{
- struct dso *dso = dsos__find(&machine->user_dsos, VDSO__MAP_NAME, true);
+ struct vdso_info *vdso_info;
+ struct dso *dso;
+
+ if (!machine->vdso_info)
+ machine->vdso_info = vdso_info__new();
+
+ vdso_info = machine->vdso_info;
+ if (!vdso_info)
+ return NULL;
+ dso = dsos__find(&machine->user_dsos, VDSO__MAP_NAME, true);
if (!dso) {
char *file;
diff --git a/tools/perf/util/vdso.h b/tools/perf/util/vdso.h
index 9ab0738b6752..7cf1576863a4 100644
--- a/tools/perf/util/vdso.h
+++ b/tools/perf/util/vdso.h
@@ -15,6 +15,6 @@ static inline bool is_vdso_map(const char *filename)
struct machine;
struct dso *vdso__dso_findnew(struct machine *machine);
-void vdso__exit(void);
+void vdso__exit(struct machine *machine);
#endif /* __PERF_VDSO__ */