perf tools: Add attr->mmap2 support

This patch adds support for the new PERF_RECORD_MMAP2 record type
exposed by the kernel. This is an extended PERF_RECORD_MMAP record.

It adds for each file-backed mapping the device major, minor number and
the inode number and generation.

This triplet uniquely identifies the source of a file-backed mapping. It
can be used to detect identical virtual mappings between processes, for
instance.

The patch will prefer MMAP2 over MMAP.

Signed-off-by: Stephane Eranian <eranian@google.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung.kim@lge.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1377079825-19057-3-git-send-email-eranian@google.com
[ Cope with 314add6 "Change machine__findnew_thread() to set thread pid",
  fix 'perf test' regression test entry affected,
  use perf_missing_features.mmap2 to fallback to not using .mmap2 in older kernels,
  so that new tools can work with kernels where this feature is not present ]
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

17 files changed, 200 insertions, 25 deletions

diff --git a/tools/perf/builtin-annotate.c b/tools/perf/builtin-annotate.c
index f988d380c52f..5ebd0c3b71b6 100644
--- a/tools/perf/builtin-annotate.c
+++ b/tools/perf/builtin-annotate.c
@@ -277,6 +277,7 @@ int cmd_annotate(int argc, const char **argv, const char *prefix __maybe_unused)
                 .tool = {
                         .sample = process_sample_event,
                         .mmap   = perf_event__process_mmap,
+                        .mmap2  = perf_event__process_mmap2,
                         .comm   = perf_event__process_comm,
                         .exit   = perf_event__process_exit,
                         .fork   = perf_event__process_fork,
diff --git a/tools/perf/builtin-inject.c b/tools/perf/builtin-inject.c
index 9b336fdb6f71..423875c999b2 100644
--- a/tools/perf/builtin-inject.c
+++ b/tools/perf/builtin-inject.c
@@ -123,6 +123,19 @@ static int perf_event__repipe_mmap(struct perf_tool *tool,
         return err;
 }
 
+static int perf_event__repipe_mmap2(struct perf_tool *tool,
+                                   union perf_event *event,
+                                   struct perf_sample *sample,
+                                   struct machine *machine)
+{
+        int err;
+
+        err = perf_event__process_mmap2(tool, event, sample, machine);
+        perf_event__repipe(tool, event, sample, machine);
+
+        return err;
+}
+
 static int perf_event__repipe_fork(struct perf_tool *tool,
                                    union perf_event *event,
                                    struct perf_sample *sample,
@@ -339,6 +352,7 @@ static int __cmd_inject(struct perf_inject *inject)
 
         if (inject->build_ids || inject->sched_stat) {
                 inject->tool.mmap         = perf_event__repipe_mmap;
+                inject->tool.mmap2        = perf_event__repipe_mmap2;
                 inject->tool.fork         = perf_event__repipe_fork;
                 inject->tool.tracing_data = perf_event__repipe_tracing_data;
         }
@@ -390,6 +404,7 @@ int cmd_inject(int argc, const char **argv, const char *prefix __maybe_unused)
                 .tool = {
                         .sample         = perf_event__repipe_sample,
                         .mmap           = perf_event__repipe,
+                        .mmap2          = perf_event__repipe,
                         .comm           = perf_event__repipe,
                         .fork           = perf_event__repipe,
                         .exit           = perf_event__repipe,
diff --git a/tools/perf/builtin-mem.c b/tools/perf/builtin-mem.c
index 791b432df847..253133a6251d 100644
--- a/tools/perf/builtin-mem.c
+++ b/tools/perf/builtin-mem.c
@@ -190,6 +190,7 @@ int cmd_mem(int argc, const char **argv, const char *prefix __maybe_unused)
                 .tool = {
                         .sample         = process_sample_event,
                         .mmap           = perf_event__process_mmap,
+                        .mmap2          = perf_event__process_mmap2,
                         .comm           = perf_event__process_comm,
                         .lost           = perf_event__process_lost,
                         .fork           = perf_event__process_fork,
diff --git a/tools/perf/builtin-report.c b/tools/perf/builtin-report.c
index 9725aa375414..8e50d8d77419 100644
--- a/tools/perf/builtin-report.c
+++ b/tools/perf/builtin-report.c
@@ -744,6 +744,7 @@ int cmd_report(int argc, const char **argv, const char *prefix __maybe_unused)
                 .tool = {
                         .sample          = process_sample_event,
                         .mmap            = perf_event__process_mmap,
+                        .mmap2           = perf_event__process_mmap2,
                         .comm            = perf_event__process_comm,
                         .exit            = perf_event__process_exit,
                         .fork            = perf_event__process_fork,
diff --git a/tools/perf/builtin-script.c b/tools/perf/builtin-script.c
index 93a34cef9676..7f31a3ded1b6 100644
--- a/tools/perf/builtin-script.c
+++ b/tools/perf/builtin-script.c
@@ -542,6 +542,7 @@ static int process_sample_event(struct perf_tool *tool __maybe_unused,
 static struct perf_tool perf_script = {
         .sample          = process_sample_event,
         .mmap            = perf_event__process_mmap,
+        .mmap2           = perf_event__process_mmap2,
         .comm            = perf_event__process_comm,
         .exit            = perf_event__process_exit,
         .fork            = perf_event__process_fork,
diff --git a/tools/perf/tests/perf-record.c b/tools/perf/tests/perf-record.c
index 72d8881873b0..b8a7056519ac 100644
--- a/tools/perf/tests/perf-record.c
+++ b/tools/perf/tests/perf-record.c
@@ -50,7 +50,7 @@ int test__PERF_RECORD(void)
         struct perf_sample sample;
         const char *cmd = "sleep";
         const char *argv[] = { cmd, "1", NULL, };
-        char *bname;
+        char *bname, *mmap_filename;
         u64 prev_time = 0;
         bool found_cmd_mmap = false,
              found_libc_mmap = false,
@@ -212,6 +212,7 @@ int test__PERF_RECORD(void)
 
                                 if ((type == PERF_RECORD_COMM ||
                                      type == PERF_RECORD_MMAP ||
+                                     type == PERF_RECORD_MMAP2 ||
                                      type == PERF_RECORD_FORK ||
                                      type == PERF_RECORD_EXIT) &&
                                      (pid_t)event->comm.pid != evlist->workload.pid) {
@@ -220,7 +221,8 @@ int test__PERF_RECORD(void)
                                 }
 
                                 if ((type == PERF_RECORD_COMM ||
-                                     type == PERF_RECORD_MMAP) &&
+                                     type == PERF_RECORD_MMAP ||
+                                     type == PERF_RECORD_MMAP2) &&
                                      event->comm.pid != event->comm.tid) {
                                         pr_debug("%s with different pid/tid!\n", name);
                                         ++errs;
@@ -236,7 +238,12 @@ int test__PERF_RECORD(void)
                                 case PERF_RECORD_EXIT:
                                         goto found_exit;
                                 case PERF_RECORD_MMAP:
-                                        bname = strrchr(event->mmap.filename, '/');
+                                        mmap_filename = event->mmap.filename;
+                                        goto check_bname;
+                                case PERF_RECORD_MMAP2:
+                                        mmap_filename = event->mmap2.filename;
+                                check_bname:
+                                        bname = strrchr(mmap_filename, '/');
                                         if (bname != NULL) {
                                                 if (!found_cmd_mmap)
                                                         found_cmd_mmap = !strcmp(bname + 1, cmd);
@@ -245,7 +252,7 @@ int test__PERF_RECORD(void)
                                                 if (!found_ld_mmap)
                                                         found_ld_mmap = !strncmp(bname + 1, "ld", 2);
                                         } else if (!found_vdso_mmap)
-                                                found_vdso_mmap = !strcmp(event->mmap.filename, "[vdso]");
+                                                found_vdso_mmap = !strcmp(mmap_filename, "[vdso]");
                                         break;
 
                                 case PERF_RECORD_SAMPLE:
diff --git a/tools/perf/util/build-id.c b/tools/perf/util/build-id.c
index fb584092eb88..7ded71d19d75 100644
--- a/tools/perf/util/build-id.c
+++ b/tools/perf/util/build-id.c
@@ -67,6 +67,7 @@ static int perf_event__exit_del_thread(struct perf_tool *tool __maybe_unused,
 struct perf_tool build_id__mark_dso_hit_ops = {
         .sample = build_id__mark_dso_hit,
         .mmap   = perf_event__process_mmap,
+        .mmap2  = perf_event__process_mmap2,
         .fork   = perf_event__process_fork,
         .exit   = perf_event__exit_del_thread,
         .attr            = perf_event__process_attr,
diff --git a/tools/perf/util/event.c b/tools/perf/util/event.c
index 8d51f21107aa..9b393e7dca6f 100644
--- a/tools/perf/util/event.c
+++ b/tools/perf/util/event.c
@@ -11,6 +11,7 @@
 static const char *perf_event__names[] = {
         [0]                                     = "TOTAL",
         [PERF_RECORD_MMAP]                      = "MMAP",
+        [PERF_RECORD_MMAP2]                     = "MMAP2",
         [PERF_RECORD_LOST]                      = "LOST",
         [PERF_RECORD_COMM]                      = "COMM",
         [PERF_RECORD_EXIT]                      = "EXIT",
@@ -186,7 +187,7 @@ static int perf_event__synthesize_mmap_events(struct perf_tool *tool,
                 return -1;
         }
 
-        event->header.type = PERF_RECORD_MMAP;
+        event->header.type = PERF_RECORD_MMAP2;
         /*
          * Just like the kernel, see __perf_event_mmap in kernel/perf_event.c
          */
@@ -197,7 +198,9 @@ static int perf_event__synthesize_mmap_events(struct perf_tool *tool,
                 char prot[5];
                 char execname[PATH_MAX];
                 char anonstr[] = "//anon";
+                unsigned int ino;
                 size_t size;
+                ssize_t n;
 
                 if (fgets(bf, sizeof(bf), fp) == NULL)
                         break;
@@ -206,9 +209,16 @@ static int perf_event__synthesize_mmap_events(struct perf_tool *tool,
                 strcpy(execname, "");
 
                 /* 00400000-0040c000 r-xp 00000000 fd:01 41038  /bin/cat */
-                sscanf(bf, "%"PRIx64"-%"PRIx64" %s %"PRIx64" %*x:%*x %*u %s\n",
-                       &event->mmap.start, &event->mmap.len, prot,
-                       &event->mmap.pgoff, execname);
+                n = sscanf(bf, "%"PRIx64"-%"PRIx64" %s %"PRIx64" %x:%x %u %s\n",
+                       &event->mmap2.start, &event->mmap2.len, prot,
+                       &event->mmap2.pgoff, &event->mmap2.maj,
+                       &event->mmap2.min,
+                       &ino, execname);
+
+                event->mmap2.ino = (u64)ino;
+
+                if (n != 8)
+                        continue;
 
                 if (prot[2] != 'x')
                         continue;
@@ -217,15 +227,15 @@ static int perf_event__synthesize_mmap_events(struct perf_tool *tool,
                         strcpy(execname, anonstr);
 
                 size = strlen(execname) + 1;
-                memcpy(event->mmap.filename, execname, size);
+                memcpy(event->mmap2.filename, execname, size);
                 size = PERF_ALIGN(size, sizeof(u64));
-                event->mmap.len -= event->mmap.start;
-                event->mmap.header.size = (sizeof(event->mmap) -
-                                           (sizeof(event->mmap.filename) - size));
-                memset(event->mmap.filename + size, 0, machine->id_hdr_size);
-                event->mmap.header.size += machine->id_hdr_size;
-                event->mmap.pid = tgid;
-                event->mmap.tid = pid;
+                event->mmap2.len -= event->mmap.start;
+                event->mmap2.header.size = (sizeof(event->mmap2) -
+                                        (sizeof(event->mmap2.filename) - size));
+                memset(event->mmap2.filename + size, 0, machine->id_hdr_size);
+                event->mmap2.header.size += machine->id_hdr_size;
+                event->mmap2.pid = tgid;
+                event->mmap2.tid = pid;
 
                 if (process(tool, event, &synth_sample, machine) != 0) {
                         rc = -1;
@@ -527,6 +537,17 @@ size_t perf_event__fprintf_mmap(union perf_event *event, FILE *fp)
                        event->mmap.len, event->mmap.pgoff, event->mmap.filename);
 }
 
+size_t perf_event__fprintf_mmap2(union perf_event *event, FILE *fp)
+{
+        return fprintf(fp, " %d/%d: [%#" PRIx64 "(%#" PRIx64 ") @ %#" PRIx64
+                           " %02x:%02x %"PRIu64" %"PRIu64"]: %s\n",
+                       event->mmap2.pid, event->mmap2.tid, event->mmap2.start,
+                       event->mmap2.len, event->mmap2.pgoff, event->mmap2.maj,
+                       event->mmap2.min, event->mmap2.ino,
+                       event->mmap2.ino_generation,
+                       event->mmap2.filename);
+}
+
 int perf_event__process_mmap(struct perf_tool *tool __maybe_unused,
                              union perf_event *event,
                              struct perf_sample *sample __maybe_unused,
@@ -535,6 +556,14 @@ int perf_event__process_mmap(struct perf_tool *tool __maybe_unused,
         return machine__process_mmap_event(machine, event);
 }
 
+int perf_event__process_mmap2(struct perf_tool *tool __maybe_unused,
+                             union perf_event *event,
+                             struct perf_sample *sample __maybe_unused,
+                             struct machine *machine)
+{
+        return machine__process_mmap2_event(machine, event);
+}
+
 size_t perf_event__fprintf_task(union perf_event *event, FILE *fp)
 {
         return fprintf(fp, "(%d:%d):(%d:%d)\n",
@@ -574,6 +603,9 @@ size_t perf_event__fprintf(union perf_event *event, FILE *fp)
         case PERF_RECORD_MMAP:
                 ret += perf_event__fprintf_mmap(event, fp);
                 break;
+        case PERF_RECORD_MMAP2:
+                ret += perf_event__fprintf_mmap2(event, fp);
+                break;
         default:
                 ret += fprintf(fp, "\n");
         }
diff --git a/tools/perf/util/event.h b/tools/perf/util/event.h
index 93130d856bf0..c67ecc457d29 100644
--- a/tools/perf/util/event.h
+++ b/tools/perf/util/event.h
@@ -17,6 +17,19 @@ struct mmap_event {
         char filename[PATH_MAX];
 };
 
+struct mmap2_event {
+        struct perf_event_header header;
+        u32 pid, tid;
+        u64 start;
+        u64 len;
+        u64 pgoff;
+        u32 maj;
+        u32 min;
+        u64 ino;
+        u64 ino_generation;
+        char filename[PATH_MAX];
+};
+
 struct comm_event {
         struct perf_event_header header;
         u32 pid, tid;
@@ -159,6 +172,7 @@ struct tracing_data_event {
 union perf_event {
         struct perf_event_header        header;
         struct mmap_event               mmap;
+        struct mmap2_event              mmap2;
         struct comm_event               comm;
         struct fork_event               fork;
         struct lost_event               lost;
@@ -208,6 +222,10 @@ int perf_event__process_mmap(struct perf_tool *tool,
                              union perf_event *event,
                              struct perf_sample *sample,
                              struct machine *machine);
+int perf_event__process_mmap2(struct perf_tool *tool,
+                             union perf_event *event,
+                             struct perf_sample *sample,
+                             struct machine *machine);
 int perf_event__process_fork(struct perf_tool *tool,
                              union perf_event *event,
                              struct perf_sample *sample,
@@ -238,6 +256,7 @@ int perf_event__synthesize_sample(union perf_event *event, u64 type,
 
 size_t perf_event__fprintf_comm(union perf_event *event, FILE *fp);
 size_t perf_event__fprintf_mmap(union perf_event *event, FILE *fp);
+size_t perf_event__fprintf_mmap2(union perf_event *event, FILE *fp);
 size_t perf_event__fprintf_task(union perf_event *event, FILE *fp);
 size_t perf_event__fprintf(union perf_event *event, FILE *fp);
 
diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c
index 3612183e2cc5..0ce9febf1ba0 100644
--- a/tools/perf/util/evsel.c
+++ b/tools/perf/util/evsel.c
@@ -27,6 +27,7 @@
 static struct {
         bool sample_id_all;
         bool exclude_guest;
+        bool mmap2;
 } perf_missing_features;
 
 #define FD(e, x, y) (*(int *)xyarray__entry(e->fd, x, y))
@@ -676,8 +677,9 @@ void perf_evsel__config(struct perf_evsel *evsel,
         if (opts->sample_weight)
                 attr->sample_type       |= PERF_SAMPLE_WEIGHT;
 
-        attr->mmap = track;
-        attr->comm = track;
+        attr->mmap  = track;
+        attr->mmap2 = track && !perf_missing_features.mmap2;
+        attr->comm  = track;
 
         /*
          * XXX see the function comment above
@@ -1016,6 +1018,8 @@ static int __perf_evsel__open(struct perf_evsel *evsel, struct cpu_map *cpus,
         }
 
 fallback_missing_features:
+        if (perf_missing_features.mmap2)
+                evsel->attr.mmap2 = 0;
         if (perf_missing_features.exclude_guest)
                 evsel->attr.exclude_guest = evsel->attr.exclude_host = 0;
 retry_sample_id:
@@ -1080,8 +1084,11 @@ try_fallback:
         if (err != -EINVAL || cpu > 0 || thread > 0)
                 goto out_close;
 
-        if (!perf_missing_features.exclude_guest &&
-            (evsel->attr.exclude_guest || evsel->attr.exclude_host)) {
+        if (!perf_missing_features.mmap2 && evsel->attr.mmap2) {
+                perf_missing_features.mmap2 = true;
+                goto fallback_missing_features;
+        } else if (!perf_missing_features.exclude_guest &&
+                   (evsel->attr.exclude_guest || evsel->attr.exclude_host)) {
                 perf_missing_features.exclude_guest = true;
                 goto fallback_missing_features;
         } else if (!perf_missing_features.sample_id_all) {
@@ -1925,6 +1932,7 @@ int perf_evsel__fprintf(struct perf_evsel *evsel,
                 if_print(exclude_hv);
                 if_print(exclude_idle);
                 if_print(mmap);
+                if_print(mmap2);
                 if_print(comm);
                 if_print(freq);
                 if_print(inherit_stat);
diff --git a/tools/perf/util/header.c b/tools/perf/util/header.c
index a33197a4fd21..26441d0e571b 100644
--- a/tools/perf/util/header.c
+++ b/tools/perf/util/header.c
@@ -1351,6 +1351,9 @@ static void print_event_desc(struct perf_header *ph, int fd, FILE *fp)
 
                 fprintf(fp, ", precise_ip = %d", evsel->attr.precise_ip);
 
+                fprintf(fp, ", attr_mmap2 = %d", evsel->attr.mmap2);
+                fprintf(fp, ", attr_mmap  = %d", evsel->attr.mmap);
+                fprintf(fp, ", attr_mmap_data = %d", evsel->attr.mmap_data);
                 if (evsel->ids) {
                         fprintf(fp, ", id = {");
                         for (j = 0, id = evsel->id; j < evsel->ids; j++, id++) {
diff --git a/tools/perf/util/machine.c b/tools/perf/util/machine.c
index 1dca61f0512d..933d14f287ca 100644
--- a/tools/perf/util/machine.c
+++ b/tools/perf/util/machine.c
@@ -997,6 +997,54 @@ out_problem:
         return -1;
 }
 
+int machine__process_mmap2_event(struct machine *machine,
+                                 union perf_event *event)
+{
+        u8 cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK;
+        struct thread *thread;
+        struct map *map;
+        enum map_type type;
+        int ret = 0;
+
+        if (dump_trace)
+                perf_event__fprintf_mmap2(event, stdout);
+
+        if (cpumode == PERF_RECORD_MISC_GUEST_KERNEL ||
+            cpumode == PERF_RECORD_MISC_KERNEL) {
+                ret = machine__process_kernel_mmap_event(machine, event);
+                if (ret < 0)
+                        goto out_problem;
+                return 0;
+        }
+
+        thread = machine__findnew_thread(machine, event->mmap2.pid,
+                                        event->mmap2.pid);
+        if (thread == NULL)
+                goto out_problem;
+
+        if (event->header.misc & PERF_RECORD_MISC_MMAP_DATA)
+                type = MAP__VARIABLE;
+        else
+                type = MAP__FUNCTION;
+
+        map = map__new(&machine->user_dsos, event->mmap2.start,
+                        event->mmap2.len, event->mmap2.pgoff,
+                        event->mmap2.pid, event->mmap2.maj,
+                        event->mmap2.min, event->mmap2.ino,
+                        event->mmap2.ino_generation,
+                        event->mmap2.filename, type);
+
+        if (map == NULL)
+                goto out_problem;
+
+        thread__insert_map(thread, map);
+        return 0;
+
+out_problem:
+        dump_printf("problem processing PERF_RECORD_MMAP2, skipping event.\n");
+        return 0;
+}
+
 int machine__process_mmap_event(struct machine *machine, union perf_event *event)
 {
         u8 cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK;
@@ -1028,7 +1076,8 @@ int machine__process_mmap_event(struct machine *machine, union perf_event *event
 
         map = map__new(&machine->user_dsos, event->mmap.start,
                         event->mmap.len, event->mmap.pgoff,
-                        event->mmap.pid, event->mmap.filename,
+                        event->mmap.pid, 0, 0, 0, 0,
+                        event->mmap.filename,
                         type);
 
         if (map == NULL)
@@ -1101,6 +1150,8 @@ int machine__process_event(struct machine *machine, union perf_event *event)
                 ret = machine__process_comm_event(machine, event); break;
         case PERF_RECORD_MMAP:
                 ret = machine__process_mmap_event(machine, event); break;
+        case PERF_RECORD_MMAP2:
+                ret = machine__process_mmap2_event(machine, event); break;
         case PERF_RECORD_FORK:
                 ret = machine__process_fork_event(machine, event); break;
         case PERF_RECORD_EXIT:
diff --git a/tools/perf/util/machine.h b/tools/perf/util/machine.h
index 0df925ba6a44..58a6be1fc739 100644
--- a/tools/perf/util/machine.h
+++ b/tools/perf/util/machine.h
@@ -45,6 +45,7 @@ int machine__process_exit_event(struct machine *machine, union perf_event *event
 int machine__process_fork_event(struct machine *machine, union perf_event *event);
 int machine__process_lost_event(struct machine *machine, union perf_event *event);
 int machine__process_mmap_event(struct machine *machine, union perf_event *event);
+int machine__process_mmap2_event(struct machine *machine, union perf_event *event);
 int machine__process_event(struct machine *machine, union perf_event *event);
 
 typedef void (*machine__process_t)(struct machine *machine, void *data);
diff --git a/tools/perf/util/map.c b/tools/perf/util/map.c
index 9e8304ca343e..4f6680d2043b 100644
--- a/tools/perf/util/map.c
+++ b/tools/perf/util/map.c
@@ -48,7 +48,8 @@ void map__init(struct map *map, enum map_type type,
 }
 
 struct map *map__new(struct list_head *dsos__list, u64 start, u64 len,
-                     u64 pgoff, u32 pid, char *filename,
+                     u64 pgoff, u32 pid, u32 d_maj, u32 d_min, u64 ino,
+                     u64 ino_gen, char *filename,
                      enum map_type type)
 {
         struct map *map = malloc(sizeof(*map));
@@ -62,6 +63,11 @@ struct map *map__new(struct list_head *dsos__list, u64 start, u64 len,
                 vdso = is_vdso_map(filename);
                 no_dso = is_no_dso_memory(filename);
 
+                map->maj = d_maj;
+                map->min = d_min;
+                map->ino = ino;
+                map->ino_generation = ino_gen;
+
                 if (anon) {
                         snprintf(newfilename, sizeof(newfilename), "/tmp/perf-%d.map", pid);
                         filename = newfilename;
diff --git a/tools/perf/util/map.h b/tools/perf/util/map.h
index 2cc93cbf0e17..4886ca280536 100644
--- a/tools/perf/util/map.h
+++ b/tools/perf/util/map.h
@@ -36,6 +36,9 @@ struct map {
         bool                    erange_warned;
         u32                     priv;
         u64                     pgoff;
+        u32                     maj, min; /* only valid for MMAP2 record */
+        u64                     ino;      /* only valid for MMAP2 record */
+        u64                     ino_generation;/* only valid for MMAP2 record */
 
         /* ip -> dso rip */
         u64                     (*map_ip)(struct map *, u64);
@@ -88,8 +91,9 @@ typedef int (*symbol_filter_t)(struct map *map, struct symbol *sym);
 void map__init(struct map *map, enum map_type type,
                u64 start, u64 end, u64 pgoff, struct dso *dso);
 struct map *map__new(struct list_head *dsos__list, u64 start, u64 len,
-                     u64 pgoff, u32 pid, char *filename,
-                     enum map_type type);
+                     u64 pgoff, u32 pid, u32 d_maj, u32 d_min, u64 ino,
+                     u64 ino_gen,
+                     char *filename, enum map_type type);
 struct map *map__new2(u64 start, struct dso *dso, enum map_type type);
 void map__delete(struct map *map);
 struct map *map__clone(struct map *map);
diff --git a/tools/perf/util/session.c b/tools/perf/util/session.c
index 0308d9ee7a77..51f5edf2a6d0 100644
--- a/tools/perf/util/session.c
+++ b/tools/perf/util/session.c
@@ -351,6 +351,25 @@ static void perf_event__mmap_swap(union perf_event *event,
         }
 }
 
+static void perf_event__mmap2_swap(union perf_event *event,
+                                  bool sample_id_all)
+{
+        event->mmap2.pid   = bswap_32(event->mmap2.pid);
+        event->mmap2.tid   = bswap_32(event->mmap2.tid);
+        event->mmap2.start = bswap_64(event->mmap2.start);
+        event->mmap2.len   = bswap_64(event->mmap2.len);
+        event->mmap2.pgoff = bswap_64(event->mmap2.pgoff);
+        event->mmap2.maj   = bswap_32(event->mmap2.maj);
+        event->mmap2.min   = bswap_32(event->mmap2.min);
+        event->mmap2.ino   = bswap_64(event->mmap2.ino);
+
+        if (sample_id_all) {
+                void *data = &event->mmap2.filename;
+
+                data += PERF_ALIGN(strlen(data) + 1, sizeof(u64));
+                swap_sample_id_all(event, data);
+        }
+}
 static void perf_event__task_swap(union perf_event *event, bool sample_id_all)
 {
         event->fork.pid  = bswap_32(event->fork.pid);
@@ -455,6 +474,7 @@ typedef void (*perf_event__swap_op)(union perf_event *event,
 
 static perf_event__swap_op perf_event__swap_ops[] = {
         [PERF_RECORD_MMAP]                = perf_event__mmap_swap,
+        [PERF_RECORD_MMAP2]               = perf_event__mmap2_swap,
         [PERF_RECORD_COMM]                = perf_event__comm_swap,
         [PERF_RECORD_FORK]                = perf_event__task_swap,
         [PERF_RECORD_EXIT]                = perf_event__task_swap,
@@ -851,7 +871,8 @@ static struct machine *
              (cpumode == PERF_RECORD_MISC_GUEST_USER))) {
                 u32 pid;
 
-                if (event->header.type == PERF_RECORD_MMAP)
+                if (event->header.type == PERF_RECORD_MMAP
+                    || event->header.type == PERF_RECORD_MMAP2)
                         pid = event->mmap.pid;
                 else
                         pid = sample->pid;
@@ -978,6 +999,8 @@ static int perf_session_deliver_event(struct perf_session *session,
                                                     sample, evsel, machine);
         case PERF_RECORD_MMAP:
                 return tool->mmap(tool, event, sample, machine);
+        case PERF_RECORD_MMAP2:
+                return tool->mmap2(tool, event, sample, machine);
         case PERF_RECORD_COMM:
                 return tool->comm(tool, event, sample, machine);
         case PERF_RECORD_FORK:
diff --git a/tools/perf/util/tool.h b/tools/perf/util/tool.h
index 62b16b6165ba..4385816d3d49 100644
--- a/tools/perf/util/tool.h
+++ b/tools/perf/util/tool.h
@@ -29,6 +29,7 @@ struct perf_tool {
         event_sample    sample,
                         read;
         event_op        mmap,
+                        mmap2,
                         comm,
                         fork,
                         exit,