perf_counter: tools: report: Dynamic sort/print bits

Make the sorting and printing dynamic.

Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: John Kacur <jkacur@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
LKML-Reference: <20090527182100.921953817@chello.nl>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

1 files changed, 107 insertions, 34 deletions

diff --git a/Documentation/perf_counter/builtin-report.c b/Documentation/perf_counter/builtin-report.c
index 276256439b78..856186fd2bd4 100644
--- a/Documentation/perf_counter/builtin-report.c
+++ b/Documentation/perf_counter/builtin-report.c
@@ -699,14 +699,41 @@ struct hist_entry {
         uint32_t         count;
 };
 
+/*
+ * configurable sorting bits
+ */
+
+struct sort_entry {
+        struct list_head list;
+
+        int64_t (*cmp)(struct hist_entry *, struct hist_entry *);
+        size_t  (*print)(FILE *fp, struct hist_entry *);
+};
+
 static int64_t
-hist_entry__cmp(struct hist_entry *left, struct hist_entry *right)
+sort__thread_cmp(struct hist_entry *left, struct hist_entry *right)
 {
-        uint64_t ip_l, ip_r;
-        int cmp = right->thread->pid - left->thread->pid;
+        return right->thread->pid - left->thread->pid;
+}
+
+static size_t
+sort__thread_print(FILE *fp, struct hist_entry *self)
+{
+        char bf[32];
+
+        return fprintf(fp, "%14s ",
+                        thread__name(self->thread, bf, sizeof(bf)));
+}
 
-        if (cmp)
-                return cmp;
+static struct sort_entry sort_thread = {
+        .cmp    = sort__thread_cmp,
+        .print  = sort__thread_print,
+};
+
+static int64_t
+sort__sym_cmp(struct hist_entry *left, struct hist_entry *right)
+{
+        uint64_t ip_l, ip_r;
 
         if (left->sym == right->sym)
                 return 0;
@@ -717,6 +744,79 @@ hist_entry__cmp(struct hist_entry *left, struct hist_entry *right)
         return (int64_t)(ip_r - ip_l);
 }
 
+static size_t
+sort__sym_print(FILE *fp, struct hist_entry *self)
+{
+        size_t ret = 0;
+
+        ret += fprintf(fp, "[%c] ", self->level);
+
+        if (verbose)
+                ret += fprintf(fp, "%#018llx ", (unsigned long long)self->ip);
+
+        if (self->level != '.')
+                ret += fprintf(fp, "%s ",
+                               self->sym ? self->sym->name : "<unknown>");
+        else
+                ret += fprintf(fp, "%s: %s ",
+                               self->dso ? self->dso->name : "<unknown>",
+                               self->sym ? self->sym->name : "<unknown>");
+
+        return ret;
+}
+
+static struct sort_entry sort_sym = {
+        .cmp    = sort__sym_cmp,
+        .print  = sort__sym_print,
+};
+
+static LIST_HEAD(hist_entry__sort_list);
+
+static void setup_sorting(void)
+{
+        list_add_tail(&sort_thread.list, &hist_entry__sort_list);
+        list_add_tail(&sort_sym.list, &hist_entry__sort_list);
+}
+
+static int64_t
+hist_entry__cmp(struct hist_entry *left, struct hist_entry *right)
+{
+        struct sort_entry *se;
+        int64_t cmp = 0;
+
+        list_for_each_entry(se, &hist_entry__sort_list, list) {
+                cmp = se->cmp(left, right);
+                if (cmp)
+                        break;
+        }
+
+        return cmp;
+}
+
+static size_t
+hist_entry__fprintf(FILE *fp, struct hist_entry *self, uint64_t total_samples)
+{
+        struct sort_entry *se;
+        size_t ret;
+
+        if (total_samples) {
+                ret = fprintf(fp, "%5.2f%% ",
+                                (self->count * 100.0) / total_samples);
+        } else
+                ret = fprintf(fp, "%12d ", self->count);
+
+        list_for_each_entry(se, &hist_entry__sort_list, list)
+                ret += se->print(fp, self);
+
+        ret += fprintf(fp, "\n");
+
+        return ret;
+}
+
+/*
+ * collect histogram counts
+ */
+
 static int
 hist_entry__add(struct thread *thread, struct map *map, struct dso *dso,
                 struct symbol *sym, uint64_t ip, char level)
@@ -762,35 +862,6 @@ hist_entry__add(struct thread *thread, struct map *map, struct dso *dso,
         return 0;
 }
 
-static size_t
-hist_entry__fprintf(FILE *fp, struct hist_entry *self, uint64_t total_samples)
-{
-        char bf[32];
-        size_t ret;
-
-        if (total_samples) {
-                ret = fprintf(fp, "%5.2f%% ",
-                                (self->count * 100.0) / total_samples);
-        } else
-                ret = fprintf(fp, "%12d ", self->count);
-
-        ret += fprintf(fp, "%14s [%c] ",
-                       thread__name(self->thread, bf, sizeof(bf)),
-                       self->level);
-
-        if (verbose)
-                ret += fprintf(fp, "%#018llx ", (unsigned long long)self->ip);
-
-        if (self->level != '.')
-                ret += fprintf(fp, "%s\n",
-                               self->sym ? self->sym->name : "<unknown>");
-        else
-                ret += fprintf(fp, "%s: %s\n",
-                               self->dso ? self->dso->name : "<unknown>",
-                               self->sym ? self->sym->name : "<unknown>");
-        return ret;
-}
-
 /*
  * reverse the map, sort on count.
  */
@@ -1077,6 +1148,8 @@ int cmd_report(int argc, const char **argv, const char *prefix)
 
         parse_options(argc, argv, options, report_usage, 0);
 
+        setup_sorting();
+
         setup_pager();
 
         return __cmd_report();