Merge tag 'v3.4-rc5' into next

Linux 3.4-rc5

Merge to pull in prerequisite change for Smack:
86812bb0de1a3758dc6c7aa01a763158a7c0638a

Requested by Casey.

8 files changed, 42 insertions, 22 deletions

diff --git a/tools/perf/util/annotate.c b/tools/perf/util/annotate.c
index 199f69ec656f..08c6d138a655 100644
--- a/tools/perf/util/annotate.c
+++ b/tools/perf/util/annotate.c
@@ -64,8 +64,8 @@ int symbol__inc_addr_samples(struct symbol *sym, struct map *map,
 
         pr_debug3("%s: addr=%#" PRIx64 "\n", __func__, map->unmap_ip(map, addr));
 
-        if (addr > sym->end)
-                return 0;
+        if (addr < sym->start || addr > sym->end)
+                return -ERANGE;
 
         offset = addr - sym->start;
         h = annotation__histogram(notes, evidx);
@@ -561,16 +561,12 @@ void symbol__annotate_decay_histogram(struct symbol *sym, int evidx)
 {
         struct annotation *notes = symbol__annotation(sym);
         struct sym_hist *h = annotation__histogram(notes, evidx);
-        struct objdump_line *pos;
-        int len = sym->end - sym->start;
+        int len = sym->end - sym->start, offset;
 
         h->sum = 0;
-
-        list_for_each_entry(pos, &notes->src->source, node) {
-                if (pos->offset != -1 && pos->offset < len) {
-                        h->addr[pos->offset] = h->addr[pos->offset] * 7 / 8;
-                        h->sum += h->addr[pos->offset];
-                }
+        for (offset = 0; offset < len; ++offset) {
+                h->addr[offset] = h->addr[offset] * 7 / 8;
+                h->sum += h->addr[offset];
         }
 }
 
diff --git a/tools/perf/util/hist.c b/tools/perf/util/hist.c
index 2ec4b60aff6c..9f6d630d5316 100644
--- a/tools/perf/util/hist.c
+++ b/tools/perf/util/hist.c
@@ -256,6 +256,18 @@ static struct hist_entry *add_hist_entry(struct hists *hists,
                 if (!cmp) {
                         he->period += period;
                         ++he->nr_events;
+
+                        /* If the map of an existing hist_entry has
+                         * become out-of-date due to an exec() or
+                         * similar, update it.  Otherwise we will
+                         * mis-adjust symbol addresses when computing
+                         * the history counter to increment.
+                         */
+                        if (he->ms.map != entry->ms.map) {
+                                he->ms.map = entry->ms.map;
+                                if (he->ms.map)
+                                        he->ms.map->referenced = true;
+                        }
                         goto out;
                 }
 
diff --git a/tools/perf/util/map.c b/tools/perf/util/map.c
index dea6d1c1a954..35ae56864e4f 100644
--- a/tools/perf/util/map.c
+++ b/tools/perf/util/map.c
@@ -38,6 +38,7 @@ void map__init(struct map *self, enum map_type type,
         RB_CLEAR_NODE(&self->rb_node);
         self->groups   = NULL;
         self->referenced = false;
+        self->erange_warned = false;
 }
 
 struct map *map__new(struct list_head *dsos__list, u64 start, u64 len,
diff --git a/tools/perf/util/map.h b/tools/perf/util/map.h
index b100c20b7f94..81371bad4ef0 100644
--- a/tools/perf/util/map.h
+++ b/tools/perf/util/map.h
@@ -33,6 +33,7 @@ struct map {
         u64                     end;
         u8 /* enum map_type */  type;
         bool                    referenced;
+        bool                    erange_warned;
         u32                     priv;
         u64                     pgoff;
 
diff --git a/tools/perf/util/parse-events.l b/tools/perf/util/parse-events.l
index 05d766e3ecb5..1fcf1bbc5458 100644
--- a/tools/perf/util/parse-events.l
+++ b/tools/perf/util/parse-events.l
@@ -54,7 +54,7 @@ num_dec		[0-9]+
 num_hex         0x[a-fA-F0-9]+
 num_raw_hex     [a-fA-F0-9]+
 name            [a-zA-Z_*?][a-zA-Z0-9_*?]*
-modifier_event  [ukhp]{1,5}
+modifier_event  [ukhpGH]{1,8}
 modifier_bp     [rwx]
 
 %%
diff --git a/tools/perf/util/session.c b/tools/perf/util/session.c
index 9412e3b05f68..1efd3bee6336 100644
--- a/tools/perf/util/session.c
+++ b/tools/perf/util/session.c
@@ -826,8 +826,16 @@ static struct machine *
 {
         const u8 cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK;
 
-        if (cpumode == PERF_RECORD_MISC_GUEST_KERNEL && perf_guest)
-                return perf_session__find_machine(session, event->ip.pid);
+        if (cpumode == PERF_RECORD_MISC_GUEST_KERNEL && perf_guest) {
+                u32 pid;
+
+                if (event->header.type == PERF_RECORD_MMAP)
+                        pid = event->mmap.pid;
+                else
+                        pid = event->ip.pid;
+
+                return perf_session__find_machine(session, pid);
+        }
 
         return perf_session__find_host_machine(session);
 }
@@ -868,11 +876,11 @@ static int perf_session_deliver_event(struct perf_session *session,
                 dump_sample(session, event, sample);
                 if (evsel == NULL) {
                         ++session->hists.stats.nr_unknown_id;
-                        return -1;
+                        return 0;
                 }
                 if (machine == NULL) {
                         ++session->hists.stats.nr_unprocessable_samples;
-                        return -1;
+                        return 0;
                 }
                 return tool->sample(tool, event, sample, evsel, machine);
         case PERF_RECORD_MMAP:
diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c
index c0a028c3ebaf..ab9867b2b433 100644
--- a/tools/perf/util/symbol.c
+++ b/tools/perf/util/symbol.c
@@ -977,8 +977,9 @@ static Elf_Scn *elf_section_by_name(Elf *elf, GElf_Ehdr *ep,
  * And always look at the original dso, not at debuginfo packages, that
  * have the PLT data stripped out (shdr_rel_plt.sh_type == SHT_NOBITS).
  */
-static int dso__synthesize_plt_symbols(struct  dso *dso, struct map *map,
-                                       symbol_filter_t filter)
+static int
+dso__synthesize_plt_symbols(struct dso *dso, char *name, struct map *map,
+                            symbol_filter_t filter)
 {
         uint32_t nr_rel_entries, idx;
         GElf_Sym sym;
@@ -993,10 +994,7 @@ static int dso__synthesize_plt_symbols(struct  dso *dso, struct map *map,
         char sympltname[1024];
         Elf *elf;
         int nr = 0, symidx, fd, err = 0;
-        char name[PATH_MAX];
 
-        snprintf(name, sizeof(name), "%s%s",
-                 symbol_conf.symfs, dso->long_name);
         fd = open(name, O_RDONLY);
         if (fd < 0)
                 goto out;
@@ -1703,8 +1701,9 @@ restart:
                         continue;
 
                 if (ret > 0) {
-                        int nr_plt = dso__synthesize_plt_symbols(dso, map,
-                                                                 filter);
+                        int nr_plt;
+
+                        nr_plt = dso__synthesize_plt_symbols(dso, name, map, filter);
                         if (nr_plt > 0)
                                 ret += nr_plt;
                         break;
diff --git a/tools/perf/util/ui/browsers/hists.c b/tools/perf/util/ui/browsers/hists.c
index d7a1c4afe28b..2f83e5dc9967 100644
--- a/tools/perf/util/ui/browsers/hists.c
+++ b/tools/perf/util/ui/browsers/hists.c
@@ -125,6 +125,9 @@ static int callchain__count_rows(struct rb_root *chain)
 
 static bool map_symbol__toggle_fold(struct map_symbol *self)
 {
+        if (!self)
+                return false;
+
         if (!self->has_children)
                 return false;