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Message-Id: <1349678613-7045-8-git-send-email-irina.tirdea@gmail.com>
Date: Mon, 8 Oct 2012 09:43:32 +0300
From: Irina Tirdea <irina.tirdea@...il.com>
To: Arnaldo Carvalho de Melo <acme@...stprotocols.net>,
Ingo Molnar <mingo@...nel.org>,
Steven Rostedt <rostedt@...dmis.org>,
Peter Zijlstra <a.p.zijlstra@...llo.nl>
Cc: LKML <linux-kernel@...r.kernel.org>,
Paul Mackerras <paulus@...ba.org>,
David Ahern <dsahern@...il.com>,
Namhyung Kim <namhyung@...nel.org>,
Pekka Enberg <penberg@...nel.org>,
Jiri Olsa <jolsa@...hat.com>,
Irina Tirdea <irina.tirdea@...el.com>
Subject: [PATCH v3 7/8] perf tools: configure addr2line for cross-compiling
From: Irina Tirdea <irina.tirdea@...el.com>
When analyzing data recorded on a target with a different architecture than
the host, we must use addr2line from the toolchain for that architecture.
Add a command line option to set addr2line at runtime.
As we have architecture information of saved perf.data file, we can
also try to find cross-built addr2line path. The predefined triplets include
support for Android (arm, x86 and mips architectures).
Signed-off-by: Irina Tirdea <irina.tirdea@...el.com>
---
tools/perf/Documentation/android.txt | 18 ++++++++++++++++++
tools/perf/Documentation/perf-annotate.txt | 2 ++
tools/perf/Documentation/perf-report.txt | 2 ++
tools/perf/arch/common.c | 5 +++++
tools/perf/arch/common.h | 2 ++
tools/perf/builtin-annotate.c | 5 +++++
tools/perf/builtin-report.c | 6 ++++++
tools/perf/util/annotate.c | 13 ++++++++++++-
tools/perf/util/sort.c | 16 +++++++++++++---
9 files changed, 65 insertions(+), 4 deletions(-)
diff --git a/tools/perf/Documentation/android.txt b/tools/perf/Documentation/android.txt
index 24fd01c..c2a8017 100644
--- a/tools/perf/Documentation/android.txt
+++ b/tools/perf/Documentation/android.txt
@@ -74,3 +74,21 @@ IV. Run perf
------------------------------------------------
Run perf on your device/emulator to which you previously connected using adb:
# ./data/perf
+
+V. Analyze data recorded in Android on the host
+------------------------------------------------
+perf report and perf annotate use objdump and addr2line tools from Linux.
+For analyzing data recorded for a different architecture you need to use the
+versions provided in the toolchain for that architecture. The detection of the
+proper toolchain is done at runtime; all you need to do is set some environment
+variables before running perf annotate/report:
+1. set CROSS_COMPILE
+ export CROSS_COMPILE=${NDK_TOOLCHAIN}
+or
+2. add the path to the toolchain to PATH
+ export PATH=$PATH:${ANDROID_TOOLCHAIN}
+or
+3. set the Android environment if you have the source tree
+(this will set $PATH for you as mentioned above)
+ source build/envsetup.sh
+ lunch
diff --git a/tools/perf/Documentation/perf-annotate.txt b/tools/perf/Documentation/perf-annotate.txt
index c8ffd9f..177906a 100644
--- a/tools/perf/Documentation/perf-annotate.txt
+++ b/tools/perf/Documentation/perf-annotate.txt
@@ -87,6 +87,8 @@ OPTIONS
--objdump=<path>::
Path to objdump binary.
+--addr2line=<path>::
+ Path to addr2line binary.
SEE ALSO
--------
diff --git a/tools/perf/Documentation/perf-report.txt b/tools/perf/Documentation/perf-report.txt
index f4d91be..b6bb26e 100644
--- a/tools/perf/Documentation/perf-report.txt
+++ b/tools/perf/Documentation/perf-report.txt
@@ -170,6 +170,8 @@ OPTIONS
--objdump=<path>::
Path to objdump binary.
+--addr2line=<path>::
+ Path to addr2line binary.
SEE ALSO
--------
diff --git a/tools/perf/arch/common.c b/tools/perf/arch/common.c
index 1db891f..e84b139 100644
--- a/tools/perf/arch/common.c
+++ b/tools/perf/arch/common.c
@@ -157,3 +157,8 @@ void try_objdump_path(struct perf_session *session)
{
objdump_path = try_binutils_path(session, "objdump");
}
+
+void try_addr2line_path(struct perf_session *session)
+{
+ addr2line_path = try_binutils_path(session, "addr2line");
+}
diff --git a/tools/perf/arch/common.h b/tools/perf/arch/common.h
index d88ecc3..ca95f0a 100644
--- a/tools/perf/arch/common.h
+++ b/tools/perf/arch/common.h
@@ -4,7 +4,9 @@
#include "session.h"
extern const char *objdump_path;
+extern const char *addr2line_path;
void try_objdump_path(struct perf_session *session);
+void try_addr2line_path(struct perf_session *session);
#endif /* ARCH_PERF_COMMON_H */
diff --git a/tools/perf/builtin-annotate.c b/tools/perf/builtin-annotate.c
index 8d90ab5..6f3b21a 100644
--- a/tools/perf/builtin-annotate.c
+++ b/tools/perf/builtin-annotate.c
@@ -189,6 +189,8 @@ static int __cmd_annotate(struct perf_annotate *ann)
if (!objdump_path)
try_objdump_path(session);
+ if (!addr2line_path)
+ try_addr2line_path(session);
ret = perf_session__process_events(session, &ann->tool);
if (ret)
@@ -288,6 +290,9 @@ int cmd_annotate(int argc, const char **argv, const char *prefix __maybe_unused)
"Specify disassembler style (e.g. -M intel for intel syntax)"),
OPT_STRING(0, "objdump", &objdump_path, "path",
"objdump binary to use for disassembly and annotations"),
+ OPT_STRING(0, "addr2line", &addr2line_path, "path",
+ "addr2line binary to use for obtaining "
+ "file names and line numbers"),
OPT_END()
};
diff --git a/tools/perf/builtin-report.c b/tools/perf/builtin-report.c
index e1549bc..b1a1949 100644
--- a/tools/perf/builtin-report.c
+++ b/tools/perf/builtin-report.c
@@ -642,6 +642,9 @@ int cmd_report(int argc, const char **argv, const char *prefix __maybe_unused)
"use branch records for histogram filling", parse_branch_mode),
OPT_STRING(0, "objdump", &objdump_path, "path",
"objdump binary to use for disassembly and annotations"),
+ OPT_STRING(0, "addr2line", &addr2line_path, "path",
+ "addr2line binary to use for obtaining "
+ "file names and line numbers"),
OPT_END()
};
@@ -673,6 +676,9 @@ int cmd_report(int argc, const char **argv, const char *prefix __maybe_unused)
has_br_stack = perf_header__has_feat(&session->header,
HEADER_BRANCH_STACK);
+ if (!addr2line_path)
+ try_addr2line_path(session);
+
if (sort__branch_mode == -1 && has_br_stack)
sort__branch_mode = 1;
diff --git a/tools/perf/util/annotate.c b/tools/perf/util/annotate.c
index f0a9103..bf5573f 100644
--- a/tools/perf/util/annotate.c
+++ b/tools/perf/util/annotate.c
@@ -18,6 +18,7 @@
const char *disassembler_style;
const char *objdump_path;
+const char *addr2line_path;
static struct ins *ins__find(const char *name);
static int disasm_line__parse(char *line, char **namep, char **rawp);
@@ -894,10 +895,18 @@ static int symbol__get_source_line(struct symbol *sym, struct map *map,
struct source_line *src_line;
struct annotation *notes = symbol__annotation(sym);
struct sym_hist *h = annotation__histogram(notes, evidx);
+ char symfs_filename[PATH_MAX];
if (!h->sum)
return 0;
+ snprintf(symfs_filename, sizeof(symfs_filename), "%s%s",
+ symbol_conf.symfs, filename);
+ if (access(symfs_filename, R_OK)) {
+ snprintf(symfs_filename, sizeof(symfs_filename), "%s",
+ filename);
+ }
+
src_line = notes->src->lines = calloc(len, sizeof(struct source_line));
if (!notes->src->lines)
return -1;
@@ -915,7 +924,9 @@ static int symbol__get_source_line(struct symbol *sym, struct map *map,
continue;
offset = start + i;
- sprintf(cmd, "addr2line -e %s %016" PRIx64, filename, offset);
+ sprintf(cmd, "%s -e %s %016" PRIx64,
+ addr2line_path ? addr2line_path : "addr2line",
+ symfs_filename, offset);
fp = popen(cmd, "r");
if (!fp)
continue;
diff --git a/tools/perf/util/sort.c b/tools/perf/util/sort.c
index b5b1b92..037ab89 100644
--- a/tools/perf/util/sort.c
+++ b/tools/perf/util/sort.c
@@ -1,5 +1,6 @@
#include "sort.h"
#include "hist.h"
+#include "../arch/common.h"
regex_t parent_regex;
const char default_parent_pattern[] = "^sys_|^do_page_fault";
@@ -256,12 +257,21 @@ static int hist_entry__srcline_snprintf(struct hist_entry *self, char *bf,
FILE *fp;
char cmd[PATH_MAX + 2], *path = self->srcline, *nl;
size_t line_len;
+ char symfs_dso_name[PATH_MAX];
- if (path != NULL)
+ if (path != NULL || !self->ms.map)
goto out_path;
- snprintf(cmd, sizeof(cmd), "addr2line -e %s %016" PRIx64,
- self->ms.map->dso->long_name, self->ip);
+ snprintf(symfs_dso_name, sizeof(symfs_dso_name), "%s%s",
+ symbol_conf.symfs, self->ms.map->dso->long_name);
+ if (access(symfs_dso_name, R_OK)) {
+ snprintf(symfs_dso_name, sizeof(symfs_dso_name), "%s",
+ self->ms.map->dso->long_name);
+ }
+
+ snprintf(cmd, sizeof(cmd), "%s -e %s %016" PRIx64,
+ addr2line_path ? addr2line_path : "addr2line",
+ symfs_dso_name, self->ip);
fp = popen(cmd, "r");
if (!fp)
goto out_ip;
--
1.7.9.5
--
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