| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Date: Mon, 22 Oct 2012 12:46:10 +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 v5 4/6] perf tools: Try to find cross-built addr2line path
From: Irina Tirdea <irina.tirdea@...el.com>
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/arch/common.c | 6 ++++++
tools/perf/arch/common.h | 2 ++
tools/perf/builtin-annotate.c | 6 ++++++
tools/perf/builtin-report.c | 6 ++++++
tools/perf/util/sort.c | 1 +
tools/perf/util/sort.h | 1 -
7 files changed, 39 insertions(+), 1 deletion(-)
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/arch/common.c b/tools/perf/arch/common.c
index 2367b25..18ea475 100644
--- a/tools/perf/arch/common.c
+++ b/tools/perf/arch/common.c
@@ -176,3 +176,9 @@ int perf_session_env__lookup_objdump(struct perf_session_env *env)
return perf_session_env__lookup_binutils_path(env, "objdump",
&objdump_path);
}
+
+int perf_session_env__lookup_addr2line(struct perf_session_env *env)
+{
+ return perf_session_env__lookup_binutils_path(env, "addr2line",
+ &addr2line_path);
+}
diff --git a/tools/perf/arch/common.h b/tools/perf/arch/common.h
index ede246e..e78cebd 100644
--- a/tools/perf/arch/common.h
+++ b/tools/perf/arch/common.h
@@ -4,7 +4,9 @@
#include "../util/session.h"
extern const char *objdump_path;
+extern const char *addr2line_path;
int perf_session_env__lookup_objdump(struct perf_session_env *env);
+int perf_session_env__lookup_addr2line(struct perf_session_env *env);
#endif /* ARCH_PERF_COMMON_H */
diff --git a/tools/perf/builtin-annotate.c b/tools/perf/builtin-annotate.c
index e4df5da..0f46ec6 100644
--- a/tools/perf/builtin-annotate.c
+++ b/tools/perf/builtin-annotate.c
@@ -193,6 +193,12 @@ static int __cmd_annotate(struct perf_annotate *ann)
goto out_delete;
}
+ if (!addr2line_path) {
+ ret = perf_session_env__lookup_addr2line(&session->header.env);
+ if (ret)
+ goto out_delete;
+ }
+
ret = perf_session__process_events(session, &ann->tool);
if (ret)
goto out_delete;
diff --git a/tools/perf/builtin-report.c b/tools/perf/builtin-report.c
index 9c0fe68..692462c 100644
--- a/tools/perf/builtin-report.c
+++ b/tools/perf/builtin-report.c
@@ -682,6 +682,12 @@ int cmd_report(int argc, const char **argv, const char *prefix __maybe_unused)
goto error;
}
+ if (!addr2line_path) {
+ ret = perf_session_env__lookup_addr2line(&session->header.env);
+ if (ret)
+ goto error;
+ }
+
if (sort__branch_mode == -1 && has_br_stack)
sort__branch_mode = 1;
diff --git a/tools/perf/util/sort.c b/tools/perf/util/sort.c
index 19cc046..f014bfa 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";
diff --git a/tools/perf/util/sort.h b/tools/perf/util/sort.h
index c8e58f6..13761d8 100644
--- a/tools/perf/util/sort.h
+++ b/tools/perf/util/sort.h
@@ -139,7 +139,6 @@ struct sort_entry {
extern struct sort_entry sort_thread;
extern struct list_head hist_entry__sort_list;
-extern const char *addr2line_path;
void setup_sorting(const char * const usagestr[], const struct option *opts);
extern int sort_dimension__add(const char *);
--
1.7.9.5
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
Powered by blists - more mailing lists