Merge branch 'perfcounters-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip

* 'perfcounters-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (27 commits)
  perf_counter: Zero dead bytes from ftrace raw samples size alignment
  perf_counter: Subtract the buffer size field from the event record size
  perf_counter: Require CAP_SYS_ADMIN for raw tracepoint data
  perf_counter: Correct PERF_SAMPLE_RAW output
  perf tools: callchain: Fix bad rounding of minimum rate
  perf_counter tools: Fix libbfd detection for systems with libz dependency
  perf: "Longum est iter per praecepta, breve et efficax per exempla"
  perf_counter: Fix a race on perf_counter_ctx
  perf_counter: Fix tracepoint sampling to be part of generic sampling
  perf_counter: Work around gcc warning by initializing tracepoint record unconditionally
  perf tools: callchain: Fix sum of percentages to be 100% by displaying amount of ignored chains in fractal mode
  perf tools: callchain: Fix 'perf report' display to be callchain by default
  perf tools: callchain: Fix spurious 'perf report' warnings: ignore empty callchains
  perf record: Fix the -A UI for empty or non-existent perf.data
  perf util: Fix do_read() to fail on EOF instead of busy-looping
  perf list: Fix the output to not include tracepoints without an id
  perf_counter/powerpc: Fix oops on cpus without perf_counter hardware support
  perf stat: Fix tool option consistency: rename -S/--scale to -c/--scale
  perf report: Add debug help for the finding of symbol bugs - show the symtab origin (DSO, build-id, kernel, etc)
  perf report: Fix per task mult-counter stat reporting
  ...

1 files changed, 89 insertions, 10 deletions

diff --git a/tools/perf/builtin-report.c b/tools/perf/builtin-report.c
index 8cb58d68a006..99274cec0adb 100644
--- a/tools/perf/builtin-report.c
+++ b/tools/perf/builtin-report.c
@@ -68,7 +68,7 @@ static int		callchain;
 
 static
 struct callchain_param  callchain_param = {
-        .mode   = CHAIN_GRAPH_ABS,
+        .mode   = CHAIN_GRAPH_REL,
         .min_percent = 0.5
 };
 
@@ -112,7 +112,9 @@ struct read_event {
         struct perf_event_header header;
         u32 pid,tid;
         u64 value;
-        u64 format[3];
+        u64 time_enabled;
+        u64 time_running;
+        u64 id;
 };
 
 typedef union event_union {
@@ -698,7 +700,8 @@ sort__sym_print(FILE *fp, struct hist_entry *self, unsigned int width __used)
         size_t ret = 0;
 
         if (verbose)
-                ret += repsep_fprintf(fp, "%#018llx  ", (u64)self->ip);
+                ret += repsep_fprintf(fp, "%#018llx %c ", (u64)self->ip,
+                                      dso__symtab_origin(self->dso));
 
         ret += repsep_fprintf(fp, "[%c] ", self->level);
         if (self->sym) {
@@ -888,6 +891,21 @@ ipchain__fprintf_graph(FILE *fp, struct callchain_list *chain, int depth,
         return ret;
 }
 
+static struct symbol *rem_sq_bracket;
+static struct callchain_list rem_hits;
+
+static void init_rem_hits(void)
+{
+        rem_sq_bracket = malloc(sizeof(*rem_sq_bracket) + 6);
+        if (!rem_sq_bracket) {
+                fprintf(stderr, "Not enough memory to display remaining hits\n");
+                return;
+        }
+
+        strcpy(rem_sq_bracket->name, "[...]");
+        rem_hits.sym = rem_sq_bracket;
+}
+
 static size_t
 callchain__fprintf_graph(FILE *fp, struct callchain_node *self,
                         u64 total_samples, int depth, int depth_mask)
@@ -897,25 +915,34 @@ callchain__fprintf_graph(FILE *fp, struct callchain_node *self,
         struct callchain_list *chain;
         int new_depth_mask = depth_mask;
         u64 new_total;
+        u64 remaining;
         size_t ret = 0;
         int i;
 
         if (callchain_param.mode == CHAIN_GRAPH_REL)
-                new_total = self->cumul_hit;
+                new_total = self->children_hit;
         else
                 new_total = total_samples;
 
+        remaining = new_total;
+
         node = rb_first(&self->rb_root);
         while (node) {
+                u64 cumul;
+
                 child = rb_entry(node, struct callchain_node, rb_node);
+                cumul = cumul_hits(child);
+                remaining -= cumul;
 
                 /*
                  * The depth mask manages the output of pipes that show
                  * the depth. We don't want to keep the pipes of the current
-                 * level for the last child of this depth
+                 * level for the last child of this depth.
+                 * Except if we have remaining filtered hits. They will
+                 * supersede the last child
                  */
                 next = rb_next(node);
-                if (!next)
+                if (!next && (callchain_param.mode != CHAIN_GRAPH_REL || !remaining))
                         new_depth_mask &= ~(1 << (depth - 1));
 
                 /*
@@ -930,7 +957,7 @@ callchain__fprintf_graph(FILE *fp, struct callchain_node *self,
                         ret += ipchain__fprintf_graph(fp, chain, depth,
                                                       new_depth_mask, i++,
                                                       new_total,
-                                                      child->cumul_hit);
+                                                      cumul);
                 }
                 ret += callchain__fprintf_graph(fp, child, new_total,
                                                 depth + 1,
@@ -938,6 +965,19 @@ callchain__fprintf_graph(FILE *fp, struct callchain_node *self,
                 node = next;
         }
 
+        if (callchain_param.mode == CHAIN_GRAPH_REL &&
+                remaining && remaining != new_total) {
+
+                if (!rem_sq_bracket)
+                        return ret;
+
+                new_depth_mask &= ~(1 << (depth - 1));
+
+                ret += ipchain__fprintf_graph(fp, &rem_hits, depth,
+                                              new_depth_mask, 0, new_total,
+                                              remaining);
+        }
+
         return ret;
 }
 
@@ -1358,6 +1398,8 @@ static size_t output__fprintf(FILE *fp, u64 total_samples)
         unsigned int width;
         char *col_width = col_width_list_str;
 
+        init_rem_hits();
+
         fprintf(fp, "# Samples: %Ld\n", (u64)total_samples);
         fprintf(fp, "#\n");
 
@@ -1429,6 +1471,8 @@ print_entries:
         }
         fprintf(fp, "\n");
 
+        free(rem_sq_bracket);
+
         return ret;
 }
 
@@ -1690,14 +1734,37 @@ static void trace_event(event_t *event)
         dprintf(".\n");
 }
 
+static struct perf_header       *header;
+
+static struct perf_counter_attr *perf_header__find_attr(u64 id)
+{
+        int i;
+
+        for (i = 0; i < header->attrs; i++) {
+                struct perf_header_attr *attr = header->attr[i];
+                int j;
+
+                for (j = 0; j < attr->ids; j++) {
+                        if (attr->id[j] == id)
+                                return &attr->attr;
+                }
+        }
+
+        return NULL;
+}
+
 static int
 process_read_event(event_t *event, unsigned long offset, unsigned long head)
 {
-        dprintf("%p [%p]: PERF_EVENT_READ: %d %d %Lu\n",
+        struct perf_counter_attr *attr = perf_header__find_attr(event->read.id);
+
+        dprintf("%p [%p]: PERF_EVENT_READ: %d %d %s %Lu\n",
                         (void *)(offset + head),
                         (void *)(long)(event->header.size),
                         event->read.pid,
                         event->read.tid,
+                        attr ? __event_name(attr->type, attr->config)
+                             : "FAIL",
                         event->read.value);
 
         return 0;
@@ -1743,8 +1810,6 @@ process_event(event_t *event, unsigned long offset, unsigned long head)
         return 0;
 }
 
-static struct perf_header       *header;
-
 static u64 perf_header__sample_type(void)
 {
         u64 sample_type = 0;
@@ -1812,6 +1877,13 @@ static int __cmd_report(void)
                                         " -g?\n");
                         exit(-1);
                 }
+        } else if (callchain_param.mode != CHAIN_NONE && !callchain) {
+                        callchain = 1;
+                        if (register_callchain_param(&callchain_param) < 0) {
+                                fprintf(stderr, "Can't register callchain"
+                                                " params\n");
+                                exit(-1);
+                        }
         }
 
         if (load_kernel() < 0) {
@@ -1950,6 +2022,13 @@ parse_callchain_opt(const struct option *opt __used, const char *arg,
         else if (!strncmp(tok, "fractal", strlen(arg)))
                 callchain_param.mode = CHAIN_GRAPH_REL;
 
+        else if (!strncmp(tok, "none", strlen(arg))) {
+                callchain_param.mode = CHAIN_NONE;
+                callchain = 0;
+
+                return 0;
+        }
+
         else
                 return -1;