perf tools: Factorize the map helpers
Factorize the dso mapping helpers into a single purpose common file
"util/map.c"
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Brice Goglin <Brice.Goglin@inria.fr>
diff --git a/tools/perf/util/callchain.h b/tools/perf/util/callchain.h
index a926ae4..43cf3ea 100644
--- a/tools/perf/util/callchain.h
+++ b/tools/perf/util/callchain.h
@@ -4,6 +4,7 @@
#include "../perf.h"
#include <linux/list.h>
#include <linux/rbtree.h>
+#include "util.h"
#include "symbol.h"
enum chain_mode {
diff --git a/tools/perf/util/event.h b/tools/perf/util/event.h
index 91e2fe5..d26dc88 100644
--- a/tools/perf/util/event.h
+++ b/tools/perf/util/event.h
@@ -1,4 +1,8 @@
+#ifndef __PERF_EVENT_H
+#define __PERF_EVENT_H
#include "../perf.h"
+#include "util.h"
+#include <linux/list.h>
struct ip_event {
struct perf_event_header header;
@@ -52,3 +56,29 @@
struct lost_event lost;
struct read_event read;
} event_t;
+
+struct map {
+ struct list_head node;
+ u64 start;
+ u64 end;
+ u64 pgoff;
+ u64 (*map_ip)(struct map *, u64);
+ struct dso *dso;
+};
+
+static inline u64 map__map_ip(struct map *map, u64 ip)
+{
+ return ip - map->start + map->pgoff;
+}
+
+static inline u64 vdso__map_ip(struct map *map __used, u64 ip)
+{
+ return ip;
+}
+
+struct map *map__new(struct mmap_event *event, char *cwd, int cwdlen);
+struct map *map__clone(struct map *self);
+int map__overlap(struct map *l, struct map *r);
+size_t map__fprintf(struct map *self, FILE *fp);
+
+#endif
diff --git a/tools/perf/util/map.c b/tools/perf/util/map.c
new file mode 100644
index 0000000..804e023
--- /dev/null
+++ b/tools/perf/util/map.c
@@ -0,0 +1,97 @@
+#include "event.h"
+#include "symbol.h"
+#include <stdlib.h>
+#include <string.h>
+#include <stdio.h>
+
+static inline int is_anon_memory(const char *filename)
+{
+ return strcmp(filename, "//anon") == 0;
+}
+
+static int strcommon(const char *pathname, char *cwd, int cwdlen)
+{
+ int n = 0;
+
+ while (n < cwdlen && pathname[n] == cwd[n])
+ ++n;
+
+ return n;
+}
+
+ struct map *map__new(struct mmap_event *event, char *cwd, int cwdlen)
+{
+ struct map *self = malloc(sizeof(*self));
+
+ if (self != NULL) {
+ const char *filename = event->filename;
+ char newfilename[PATH_MAX];
+ int anon;
+
+ if (cwd) {
+ int n = strcommon(filename, cwd, cwdlen);
+
+ if (n == cwdlen) {
+ snprintf(newfilename, sizeof(newfilename),
+ ".%s", filename + n);
+ filename = newfilename;
+ }
+ }
+
+ anon = is_anon_memory(filename);
+
+ if (anon) {
+ snprintf(newfilename, sizeof(newfilename), "/tmp/perf-%d.map", event->pid);
+ filename = newfilename;
+ }
+
+ self->start = event->start;
+ self->end = event->start + event->len;
+ self->pgoff = event->pgoff;
+
+ self->dso = dsos__findnew(filename);
+ if (self->dso == NULL)
+ goto out_delete;
+
+ if (self->dso == vdso || anon)
+ self->map_ip = vdso__map_ip;
+ else
+ self->map_ip = map__map_ip;
+ }
+ return self;
+out_delete:
+ free(self);
+ return NULL;
+}
+
+struct map *map__clone(struct map *self)
+{
+ struct map *map = malloc(sizeof(*self));
+
+ if (!map)
+ return NULL;
+
+ memcpy(map, self, sizeof(*self));
+
+ return map;
+}
+
+int map__overlap(struct map *l, struct map *r)
+{
+ if (l->start > r->start) {
+ struct map *t = l;
+ l = r;
+ r = t;
+ }
+
+ if (l->end > r->start)
+ return 1;
+
+ return 0;
+}
+
+size_t map__fprintf(struct map *self, FILE *fp)
+{
+ return fprintf(fp, " %Lx-%Lx %Lx %s\n",
+ self->start, self->end, self->pgoff, self->dso->name);
+}
diff --git a/tools/perf/util/symbol.h b/tools/perf/util/symbol.h
index f3490fc..50f7235 100644
--- a/tools/perf/util/symbol.h
+++ b/tools/perf/util/symbol.h
@@ -6,6 +6,7 @@
#include <linux/list.h>
#include <linux/rbtree.h>
#include "module.h"
+#include "event.h"
struct symbol {
struct rb_node rb_node;
diff --git a/tools/perf/util/util.h b/tools/perf/util/util.h
index be4b52c..d61a6f0 100644
--- a/tools/perf/util/util.h
+++ b/tools/perf/util/util.h
@@ -83,7 +83,6 @@
#include <inttypes.h>
#include "../../../include/linux/magic.h"
-#include "event.h"
#ifndef NO_ICONV
#include <iconv.h>