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authorAndi Kleen <ak@linux.intel.com>2014-11-12 18:05:24 -0800
committerArnaldo Carvalho de Melo <acme@redhat.com>2014-11-24 18:03:46 -0300
commit23f0981bbd89fcc1496d0490ec39ca7c91599e32 (patch)
tree4ab315a987915d7f46a54c8d00b5bb1824e843fb
parenta7444af69b2898bb9b3a847d3599e1fc98356ce5 (diff)
downloadop-kernel-dev-23f0981bbd89fcc1496d0490ec39ca7c91599e32.zip
op-kernel-dev-23f0981bbd89fcc1496d0490ec39ca7c91599e32.tar.gz
perf callchain: Enable printing the srcline in the history
For lbr-as-callgraph we need to see the line number in the history, because many LBR entries can be in a single function, and just showing the same function name many times is not useful. When the history code is configured to sort by address, also try to resolve the address to a file:srcline and display this in the browser. If that doesn't work still display the address. This can be also useful without LBRs for understanding which call in a large function (or in which inlined function) called something else. Contains fixes from Namhyung Kim v2: Refactor code into common function v3: Fix GTK build v4: Rebase Signed-off-by: Andi Kleen <ak@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Link: http://lkml.kernel.org/r/1415844328-4884-7-git-send-email-andi@firstfloor.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
-rw-r--r--tools/perf/util/callchain.c11
-rw-r--r--tools/perf/util/callchain.h1
-rw-r--r--tools/perf/util/srcline.c6
3 files changed, 15 insertions, 3 deletions
diff --git a/tools/perf/util/callchain.c b/tools/perf/util/callchain.c
index 38da69c..b6624ae 100644
--- a/tools/perf/util/callchain.c
+++ b/tools/perf/util/callchain.c
@@ -815,7 +815,16 @@ char *callchain_list__sym_name(struct callchain_list *cl,
int printed;
if (cl->ms.sym) {
- printed = scnprintf(bf, bfsize, "%s", cl->ms.sym->name);
+ if (callchain_param.key == CCKEY_ADDRESS &&
+ cl->ms.map && !cl->srcline)
+ cl->srcline = get_srcline(cl->ms.map->dso,
+ map__rip_2objdump(cl->ms.map,
+ cl->ip));
+ if (cl->srcline)
+ printed = scnprintf(bf, bfsize, "%s %s",
+ cl->ms.sym->name, cl->srcline);
+ else
+ printed = scnprintf(bf, bfsize, "%s", cl->ms.sym->name);
} else
printed = scnprintf(bf, bfsize, "%#" PRIx64, cl->ip);
diff --git a/tools/perf/util/callchain.h b/tools/perf/util/callchain.h
index 3e1ed15..3f15847 100644
--- a/tools/perf/util/callchain.h
+++ b/tools/perf/util/callchain.h
@@ -70,6 +70,7 @@ extern struct callchain_param callchain_param;
struct callchain_list {
u64 ip;
struct map_symbol ms;
+ char *srcline;
struct list_head list;
};
diff --git a/tools/perf/util/srcline.c b/tools/perf/util/srcline.c
index 77c1806..ac877f9 100644
--- a/tools/perf/util/srcline.c
+++ b/tools/perf/util/srcline.c
@@ -258,7 +258,7 @@ char *get_srcline(struct dso *dso, unsigned long addr)
const char *dso_name;
if (!dso->has_srcline)
- return SRCLINE_UNKNOWN;
+ goto out;
if (dso->symsrc_filename)
dso_name = dso->symsrc_filename;
@@ -289,7 +289,9 @@ out:
dso->has_srcline = 0;
dso__free_a2l(dso);
}
- return SRCLINE_UNKNOWN;
+ if (asprintf(&srcline, "%s[%lx]", dso->short_name, addr) < 0)
+ return SRCLINE_UNKNOWN;
+ return srcline;
}
void free_srcline(char *srcline)
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