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Date: Fri, 7 Aug 2015 15:54:24 -0700
From: Andi Kleen <andi@...stfloor.org>
To: acme@...nel.org
Cc: jolsa@...nel.org, namhyung@...nel.org,
linux-kernel@...r.kernel.org, Andi Kleen <ak@...ux.intel.com>
Subject: [PATCH] perf, tools, report: Add support for srcfile sort key
From: Andi Kleen <ak@...ux.intel.com>
In some cases it's useful to characterize samples by file. This is useful
to get a higher level categorization, for example to map cost to
subsystems.
Add a srcfile sort key to perf report. It builds on top of the existing
srcline support.
Signed-off-by: Andi Kleen <ak@...ux.intel.com>
---
tools/perf/Documentation/perf-report.txt | 2 ++
tools/perf/util/hist.c | 2 ++
tools/perf/util/hist.h | 1 +
tools/perf/util/sort.c | 52 ++++++++++++++++++++++++++++++++
tools/perf/util/sort.h | 2 ++
5 files changed, 59 insertions(+)
diff --git a/tools/perf/Documentation/perf-report.txt b/tools/perf/Documentation/perf-report.txt
index aabb1b4..724ab3f 100644
--- a/tools/perf/Documentation/perf-report.txt
+++ b/tools/perf/Documentation/perf-report.txt
@@ -81,6 +81,8 @@ OPTIONS
- cpu: cpu number the task ran at the time of sample
- srcline: filename and line number executed at the time of sample. The
DWARF debugging info must be provided.
+ - srcfile: file name of the source file of the same. Requires dwarf
+ information.
- weight: Event specific weight, e.g. memory latency or transaction
abort cost. This is the global weight.
- local_weight: Local weight version of the weight above.
diff --git a/tools/perf/util/hist.c b/tools/perf/util/hist.c
index 6f28d53..37dd8ae 100644
--- a/tools/perf/util/hist.c
+++ b/tools/perf/util/hist.c
@@ -944,6 +944,8 @@ void hist_entry__delete(struct hist_entry *he)
zfree(&he->stat_acc);
free_srcline(he->srcline);
+ if (he->srcfile && he->srcfile[0])
+ free(he->srcfile);
free_callchain(he->callchain);
free(he);
}
diff --git a/tools/perf/util/hist.h b/tools/perf/util/hist.h
index 5ed8d9c..3be8087 100644
--- a/tools/perf/util/hist.h
+++ b/tools/perf/util/hist.h
@@ -30,6 +30,7 @@ enum hist_column {
HISTC_PARENT,
HISTC_CPU,
HISTC_SRCLINE,
+ HISTC_SRCFILE,
HISTC_MISPREDICT,
HISTC_IN_TX,
HISTC_ABORT,
diff --git a/tools/perf/util/sort.c b/tools/perf/util/sort.c
index 4c65a14..e3e8b13 100644
--- a/tools/perf/util/sort.c
+++ b/tools/perf/util/sort.c
@@ -319,6 +319,57 @@ struct sort_entry sort_srcline = {
.se_width_idx = HISTC_SRCLINE,
};
+/* --sort srcfile */
+
+static char no_srcfile[1];
+
+static char *get_srcfile(struct hist_entry *e)
+{
+ char *sf, *p;
+ struct map *map = e->ms.map;
+
+ sf = get_srcline(map->dso, map__rip_2objdump(map, e->ip),
+ e->ms.sym, true);
+ p = strchr(sf, ':');
+ if (p && *sf) {
+ *p = 0;
+ return sf;
+ }
+ free(sf);
+ return no_srcfile;
+}
+
+static int64_t
+sort__srcfile_cmp(struct hist_entry *left, struct hist_entry *right)
+{
+ if (!left->srcfile) {
+ if (!left->ms.map)
+ left->srcfile = no_srcfile;
+ else
+ left->srcfile = get_srcfile(left);
+ }
+ if (!right->srcfile) {
+ if (!right->ms.map)
+ right->srcfile = no_srcfile;
+ else
+ right->srcfile = get_srcfile(right);
+ }
+ return strcmp(right->srcfile, left->srcfile);
+}
+
+static int hist_entry__srcfile_snprintf(struct hist_entry *he, char *bf,
+ size_t size, unsigned int width)
+{
+ return repsep_snprintf(bf, size, "%-*.*s", width, width, he->srcfile);
+}
+
+struct sort_entry sort_srcfile = {
+ .se_header = "Source File",
+ .se_cmp = sort__srcfile_cmp,
+ .se_snprintf = hist_entry__srcfile_snprintf,
+ .se_width_idx = HISTC_SRCFILE,
+};
+
/* --sort parent */
static int64_t
@@ -1173,6 +1224,7 @@ static struct sort_dimension common_sort_dimensions[] = {
DIM(SORT_PARENT, "parent", sort_parent),
DIM(SORT_CPU, "cpu", sort_cpu),
DIM(SORT_SRCLINE, "srcline", sort_srcline),
+ DIM(SORT_SRCFILE, "srcfile", sort_srcfile),
DIM(SORT_LOCAL_WEIGHT, "local_weight", sort_local_weight),
DIM(SORT_GLOBAL_WEIGHT, "weight", sort_global_weight),
DIM(SORT_TRANSACTION, "transaction", sort_transaction),
diff --git a/tools/perf/util/sort.h b/tools/perf/util/sort.h
index e97cd47..13705b2 100644
--- a/tools/perf/util/sort.h
+++ b/tools/perf/util/sort.h
@@ -114,6 +114,7 @@ struct hist_entry {
};
};
char *srcline;
+ char *srcfile;
struct symbol *parent;
struct rb_root sorted_chain;
struct branch_info *branch_info;
@@ -172,6 +173,7 @@ enum sort_type {
SORT_PARENT,
SORT_CPU,
SORT_SRCLINE,
+ SORT_SRCFILE,
SORT_LOCAL_WEIGHT,
SORT_GLOBAL_WEIGHT,
SORT_TRANSACTION,
--
2.4.3
--
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