perf report: Add --dsos parameter

So that we can filter by dso. Symbols in other dsos won't be
accounted for.

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Paul Mackerras <paulus@samba.org>
LKML-Reference: <1246399282-20934-2-git-send-email-acme@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

diff --git a/tools/perf/Documentation/perf-report.txt b/tools/perf/Documentation/perf-report.txt
index 40c1db8..13d85ca 100644 (file)
--- a/tools/perf/Documentation/perf-report.txt
+++ b/tools/perf/Documentation/perf-report.txt
@@ -20,6 +20,10 @@ OPTIONS
 -i::
 --input=::
         Input file name. (default: perf.data)
+-d::
+--dsos=::
+       Only consider symbols in these dsos. CSV that understands
+       file://filename entries.
 
 SEE ALSO
 --------

diff --git a/tools/perf/Makefile b/tools/perf/Makefile
index 1c1296d..9c6d0ae 100644 (file)
--- a/tools/perf/Makefile
+++ b/tools/perf/Makefile
@@ -301,6 +301,7 @@ LIB_H += util/util.h
 LIB_H += util/help.h
 LIB_H += util/strbuf.h
 LIB_H += util/string.h
+LIB_H += util/strlist.h
 LIB_H += util/run-command.h
 LIB_H += util/sigchain.h
 LIB_H += util/symbol.h
@@ -322,6 +323,7 @@ LIB_OBJS += util/run-command.o
 LIB_OBJS += util/quote.o
 LIB_OBJS += util/strbuf.o
 LIB_OBJS += util/string.o
+LIB_OBJS += util/strlist.o
 LIB_OBJS += util/usage.o
 LIB_OBJS += util/wrapper.o
 LIB_OBJS += util/sigchain.o

diff --git a/tools/perf/builtin-report.c b/tools/perf/builtin-report.c
index ed391db..7c6b6e7 100644 (file)
--- a/tools/perf/builtin-report.c
+++ b/tools/perf/builtin-report.c
@@ -16,6 +16,7 @@
 #include "util/symbol.h"
 #include "util/string.h"
 #include "util/callchain.h"
+#include "util/strlist.h"
 
 #include "perf.h"
 #include "util/header.h"
@@ -32,6 +33,8 @@ static char           *vmlinux = NULL;
 
 static char            default_sort_order[] = "comm,dso";
 static char            *sort_order = default_sort_order;
+static char            *dso_list_str;
+static struct strlist  *dso_list;
 
 static int             input;
 static int             show_mask = SHOW_KERNEL | SHOW_USER | SHOW_HV;
@@ -1272,6 +1275,9 @@ process_sample_event(event_t *event, unsigned long offset, unsigned long head)
        if (show & show_mask) {
                struct symbol *sym = resolve_symbol(thread, &map, &dso, &ip);
 
+               if (dso_list && dso && dso->name && !strlist__has_entry(dso_list, dso->name))
+                       return 0;
+
                if (hist_entry__add(thread, map, dso, sym, ip, chain, level, period)) {
                        eprintf("problem incrementing symbol count, skipping event\n");
                        return -1;
@@ -1659,6 +1665,8 @@ static const struct option options[] = {
        OPT_BOOLEAN('x', "exclude-other", &exclude_other,
                    "Only display entries with parent-match"),
        OPT_BOOLEAN('c', "callchain", &callchain, "Display callchains"),
+       OPT_STRING('d', "dsos", &dso_list_str, "dso[,dso...]",
+                  "only consider symbols in these dsos"),
        OPT_END()
 };
 
@@ -1698,6 +1706,14 @@ int cmd_report(int argc, const char **argv, const char *prefix)
        if (argc)
                usage_with_options(report_usage, options);
 
+       if (dso_list_str) {
+               dso_list = strlist__new(true, dso_list_str);
+               if (!dso_list) {
+                       fprintf(stderr, "problems parsing dso list\n");
+                       exit(129);
+               }
+       }
+
        setup_pager();
 
        return __cmd_report();

diff --git a/tools/perf/util/strlist.c b/tools/perf/util/strlist.c
new file mode 100644 (file)
index 0000000..025a78e
--- /dev/null
+++ b/tools/perf/util/strlist.c
@@ -0,0 +1,184 @@
+/*
+ * (c) 2009 Arnaldo Carvalho de Melo <acme@redhat.com>
+ *
+ * Licensed under the GPLv2.
+ */
+
+#include "strlist.h"
+#include <errno.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+static struct str_node *str_node__new(const char *s, bool dupstr)
+{
+       struct str_node *self = malloc(sizeof(*self));
+
+       if (self != NULL) {
+               if (dupstr) {
+                       s = strdup(s);
+                       if (s == NULL)
+                               goto out_delete;
+               }
+               self->s = s;
+       }
+
+       return self;
+
+out_delete:
+       free(self);
+       return NULL;
+}
+
+static void str_node__delete(struct str_node *self, bool dupstr)
+{
+       if (dupstr)
+               free((void *)self->s);
+       free(self);
+}
+
+int strlist__add(struct strlist *self, const char *new_entry)
+{
+       struct rb_node **p = &self->entries.rb_node;
+       struct rb_node *parent = NULL;
+       struct str_node *sn;
+
+       while (*p != NULL) {
+               int rc;
+
+               parent = *p;
+               sn = rb_entry(parent, struct str_node, rb_node);
+               rc = strcmp(sn->s, new_entry);
+
+               if (rc > 0)
+                       p = &(*p)->rb_left;
+               else if (rc < 0)
+                       p = &(*p)->rb_right;
+               else
+                       return -EEXIST;
+       }
+
+       sn = str_node__new(new_entry, self->dupstr);
+       if (sn == NULL)
+               return -ENOMEM;
+
+       rb_link_node(&sn->rb_node, parent, p);
+       rb_insert_color(&sn->rb_node, &self->entries);
+
+       return 0;
+}
+
+int strlist__load(struct strlist *self, const char *filename)
+{
+       char entry[1024];
+       int err;
+       FILE *fp = fopen(filename, "r");
+
+       if (fp == NULL)
+               return errno;
+
+       while (fgets(entry, sizeof(entry), fp) != NULL) {
+               const size_t len = strlen(entry);
+
+               if (len == 0)
+                       continue;
+               entry[len - 1] = '\0';
+
+               err = strlist__add(self, entry);
+               if (err != 0)
+                       goto out;
+       }
+
+       err = 0;
+out:
+       fclose(fp);
+       return err;
+}
+
+void strlist__remove(struct strlist *self, struct str_node *sn)
+{
+       rb_erase(&sn->rb_node, &self->entries);
+       str_node__delete(sn, self->dupstr);
+}
+
+bool strlist__has_entry(struct strlist *self, const char *entry)
+{
+       struct rb_node **p = &self->entries.rb_node;
+       struct rb_node *parent = NULL;
+
+       while (*p != NULL) {
+               struct str_node *sn;
+               int rc;
+
+               parent = *p;
+               sn = rb_entry(parent, struct str_node, rb_node);
+               rc = strcmp(sn->s, entry);
+
+               if (rc > 0)
+                       p = &(*p)->rb_left;
+               else if (rc < 0)
+                       p = &(*p)->rb_right;
+               else
+                       return true;
+       }
+
+       return false;
+}
+
+static int strlist__parse_list_entry(struct strlist *self, const char *s)
+{
+       if (strncmp(s, "file://", 7) == 0)
+               return strlist__load(self, s + 7);
+
+       return strlist__add(self, s);
+}
+
+int strlist__parse_list(struct strlist *self, const char *s)
+{
+       char *sep;
+       int err;
+
+       while ((sep = strchr(s, ',')) != NULL) {
+               *sep = '\0';
+               err = strlist__parse_list_entry(self, s);
+               *sep = ',';
+               if (err != 0)
+                       return err;
+               s = sep + 1;
+       }
+
+       return *s ? strlist__parse_list_entry(self, s) : 0;
+}
+
+struct strlist *strlist__new(bool dupstr, const char *slist)
+{
+       struct strlist *self = malloc(sizeof(*self));
+
+       if (self != NULL) {
+               self->entries = RB_ROOT;
+               self->dupstr = dupstr;
+               if (slist && strlist__parse_list(self, slist) != 0)
+                       goto out_error;
+       }
+
+       return self;
+out_error:
+       free(self);
+       return NULL;
+}
+
+void strlist__delete(struct strlist *self)
+{
+       if (self != NULL) {
+               struct str_node *pos;
+               struct rb_node *next = rb_first(&self->entries);
+
+               while (next) {
+                       pos = rb_entry(next, struct str_node, rb_node);
+                       next = rb_next(&pos->rb_node);
+                       strlist__remove(self, pos);
+               }
+               self->entries = RB_ROOT;
+               free(self);
+       }
+}

diff --git a/tools/perf/util/strlist.h b/tools/perf/util/strlist.h
new file mode 100644 (file)
index 0000000..2fb117f
--- /dev/null
+++ b/tools/perf/util/strlist.h
@@ -0,0 +1,32 @@
+#ifndef STRLIST_H_
+#define STRLIST_H_
+
+#include "rbtree.h"
+#include <stdbool.h>
+
+struct str_node {
+       struct rb_node rb_node;
+       const char     *s;
+};
+
+struct strlist {
+       struct rb_root entries;
+       bool dupstr;
+};
+
+struct strlist *strlist__new(bool dupstr, const char *slist);
+void strlist__delete(struct strlist *self);
+
+void strlist__remove(struct strlist *self, struct str_node *sn);
+int strlist__load(struct strlist *self, const char *filename);
+int strlist__add(struct strlist *self, const char *str);
+
+bool strlist__has_entry(struct strlist *self, const char *entry);
+
+static inline bool strlist__empty(const struct strlist *self)
+{
+       return rb_first(&self->entries) == NULL;
+}
+
+int strlist__parse_list(struct strlist *self, const char *s);
+#endif /* STRLIST_H_ */