From: Arnaldo Carvalho de Melo <acme@kernel.org>
To: Ingo Molnar <mingo@kernel.org>
Cc: Clark Williams <williams@redhat.com>,
linux-kernel@vger.kernel.org, linux-perf-users@vger.kernel.org,
Sandipan Das <sandipan@linux.vnet.ibm.com>,
Jiri Olsa <jolsa@redhat.com>,
"Naveen N . Rao" <naveen.n.rao@linux.vnet.ibm.com>,
Ravi Bangoria <ravi.bangoria@linux.ibm.com>,
Arnaldo Carvalho de Melo <acme@redhat.com>
Subject: [PATCH 13/18] perf script: Show symbol offsets by default
Date: Sat, 19 May 2018 07:55:02 -0300 [thread overview]
Message-ID: <20180519105507.16450-14-acme@kernel.org> (raw)
In-Reply-To: <20180519105507.16450-1-acme@kernel.org>
From: Sandipan Das <sandipan@linux.vnet.ibm.com>
Since the ip shown for a symbol is now always a virtual address, it
becomes difficult to correlate this with objdump output and determine
the exact instruction address. So, we always show the offset from the
start of the symbol.
This can be verified on a powerpc64le system running Fedora 27 as
follows:
# perf probe -a sys_write
# perf record -e probe:sys_write -g ~/test
Before applying this patch:
# perf script
test 9710 [013] 95614.332431: probe:sys_write: (c0000000004025b0)
c0000000004025b0 sys_write (/lib/modules/4.17.0-rc4+/build/vmlinux)
c00000000000b9e0 system_call (/lib/modules/4.17.0-rc4+/build/vmlinux)
7fffb70d8234 __GI___libc_write (/usr/lib64/libc-2.26.so)
7fffb7052c74 _IO_file_write@@GLIBC_2.17 (/usr/lib64/libc-2.26.so)
5afc1818 [unknown] ([unknown])
7fffb7051a60 new_do_write (/usr/lib64/libc-2.26.so)
7fffb7054638 _IO_do_write@@GLIBC_2.17 (/usr/lib64/libc-2.26.so)
7fffb7054bbc _IO_file_overflow@@GLIBC_2.17 (/usr/lib64/libc-2.26.so)
7fffb7055a24 __overflow (/usr/lib64/libc-2.26.so)
7fffb7044548 _IO_puts (/usr/lib64/libc-2.26.so)
10000440 main (/home/sandipan/test)
7fffb6fe36a0 generic_start_main.isra.0 (/usr/lib64/libc-2.26.so)
7fffb6fe3898 __libc_start_main (/usr/lib64/libc-2.26.so)
0 [unknown] ([unknown])
...
After applying this patch:
# perf script
test 9710 [013] 95614.332431: probe:sys_write: (c0000000004025b0)
c0000000004025b0 sys_write+0x10 (/lib/modules/4.17.0-rc4+/build/vmlinux)
c00000000000b9e0 system_call+0x58 (/lib/modules/4.17.0-rc4+/build/vmlinux)
7fffb70d8234 __GI___libc_write+0x24 (/usr/lib64/libc-2.26.so)
7fffb7052c74 _IO_file_write@@GLIBC_2.17+0x44 (/usr/lib64/libc-2.26.so)
5afc1818 [unknown] ([unknown])
7fffb7051a60 new_do_write+0x90 (/usr/lib64/libc-2.26.so)
7fffb7054638 _IO_do_write@@GLIBC_2.17+0x38 (/usr/lib64/libc-2.26.so)
7fffb7054bbc _IO_file_overflow@@GLIBC_2.17+0x14c (/usr/lib64/libc-2.26.so)
7fffb7055a24 __overflow+0x64 (/usr/lib64/libc-2.26.so)
7fffb7044548 _IO_puts+0x218 (/usr/lib64/libc-2.26.so)
10000440 main+0x20 (/home/sandipan/test)
7fffb6fe36a0 generic_start_main.isra.0+0x140 (/usr/lib64/libc-2.26.so)
7fffb6fe3898 __libc_start_main+0xb8 (/usr/lib64/libc-2.26.so)
0 [unknown] ([unknown])
...
Signed-off-by: Sandipan Das <sandipan@linux.vnet.ibm.com>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>
Cc: Ravi Bangoria <ravi.bangoria@linux.ibm.com>
Link: http://lkml.kernel.org/r/20180517063326.6319-2-sandipan@linux.vnet.ibm.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
tools/perf/builtin-script.c | 26 ++++++++++++----------
.../tests/shell/record+probe_libc_inet_pton.sh | 12 +++++-----
2 files changed, 20 insertions(+), 18 deletions(-)
diff --git a/tools/perf/builtin-script.c b/tools/perf/builtin-script.c
index fa2c7a288750..cefc8813e91e 100644
--- a/tools/perf/builtin-script.c
+++ b/tools/perf/builtin-script.c
@@ -153,8 +153,8 @@ static struct {
.fields = PERF_OUTPUT_COMM | PERF_OUTPUT_TID |
PERF_OUTPUT_CPU | PERF_OUTPUT_TIME |
PERF_OUTPUT_EVNAME | PERF_OUTPUT_IP |
- PERF_OUTPUT_SYM | PERF_OUTPUT_DSO |
- PERF_OUTPUT_PERIOD,
+ PERF_OUTPUT_SYM | PERF_OUTPUT_SYMOFFSET |
+ PERF_OUTPUT_DSO | PERF_OUTPUT_PERIOD,
.invalid_fields = PERF_OUTPUT_TRACE | PERF_OUTPUT_BPF_OUTPUT,
},
@@ -165,8 +165,9 @@ static struct {
.fields = PERF_OUTPUT_COMM | PERF_OUTPUT_TID |
PERF_OUTPUT_CPU | PERF_OUTPUT_TIME |
PERF_OUTPUT_EVNAME | PERF_OUTPUT_IP |
- PERF_OUTPUT_SYM | PERF_OUTPUT_DSO |
- PERF_OUTPUT_PERIOD | PERF_OUTPUT_BPF_OUTPUT,
+ PERF_OUTPUT_SYM | PERF_OUTPUT_SYMOFFSET |
+ PERF_OUTPUT_DSO | PERF_OUTPUT_PERIOD |
+ PERF_OUTPUT_BPF_OUTPUT,
.invalid_fields = PERF_OUTPUT_TRACE,
},
@@ -185,10 +186,10 @@ static struct {
.fields = PERF_OUTPUT_COMM | PERF_OUTPUT_TID |
PERF_OUTPUT_CPU | PERF_OUTPUT_TIME |
PERF_OUTPUT_EVNAME | PERF_OUTPUT_IP |
- PERF_OUTPUT_SYM | PERF_OUTPUT_DSO |
- PERF_OUTPUT_PERIOD | PERF_OUTPUT_ADDR |
- PERF_OUTPUT_DATA_SRC | PERF_OUTPUT_WEIGHT |
- PERF_OUTPUT_PHYS_ADDR,
+ PERF_OUTPUT_SYM | PERF_OUTPUT_SYMOFFSET |
+ PERF_OUTPUT_DSO | PERF_OUTPUT_PERIOD |
+ PERF_OUTPUT_ADDR | PERF_OUTPUT_DATA_SRC |
+ PERF_OUTPUT_WEIGHT | PERF_OUTPUT_PHYS_ADDR,
.invalid_fields = PERF_OUTPUT_TRACE | PERF_OUTPUT_BPF_OUTPUT,
},
@@ -199,8 +200,8 @@ static struct {
.fields = PERF_OUTPUT_COMM | PERF_OUTPUT_TID |
PERF_OUTPUT_CPU | PERF_OUTPUT_TIME |
PERF_OUTPUT_EVNAME | PERF_OUTPUT_IP |
- PERF_OUTPUT_SYM | PERF_OUTPUT_DSO |
- PERF_OUTPUT_PERIOD,
+ PERF_OUTPUT_SYM | PERF_OUTPUT_SYMOFFSET |
+ PERF_OUTPUT_DSO | PERF_OUTPUT_PERIOD,
.invalid_fields = PERF_OUTPUT_TRACE | PERF_OUTPUT_BPF_OUTPUT,
},
@@ -211,8 +212,8 @@ static struct {
.fields = PERF_OUTPUT_COMM | PERF_OUTPUT_TID |
PERF_OUTPUT_CPU | PERF_OUTPUT_TIME |
PERF_OUTPUT_EVNAME | PERF_OUTPUT_IP |
- PERF_OUTPUT_SYM | PERF_OUTPUT_DSO |
- PERF_OUTPUT_SYNTH,
+ PERF_OUTPUT_SYM | PERF_OUTPUT_SYMOFFSET |
+ PERF_OUTPUT_DSO | PERF_OUTPUT_SYNTH,
.invalid_fields = PERF_OUTPUT_TRACE | PERF_OUTPUT_BPF_OUTPUT,
},
@@ -544,6 +545,7 @@ static int perf_session__check_output_opt(struct perf_session *session)
if (attr->sample_type & PERF_SAMPLE_CALLCHAIN) {
output[j].fields |= PERF_OUTPUT_IP;
output[j].fields |= PERF_OUTPUT_SYM;
+ output[j].fields |= PERF_OUTPUT_SYMOFFSET;
output[j].fields |= PERF_OUTPUT_DSO;
set_print_ip_opts(attr);
goto out;
diff --git a/tools/perf/tests/shell/record+probe_libc_inet_pton.sh b/tools/perf/tests/shell/record+probe_libc_inet_pton.sh
index ee86473643be..650b208f700f 100755
--- a/tools/perf/tests/shell/record+probe_libc_inet_pton.sh
+++ b/tools/perf/tests/shell/record+probe_libc_inet_pton.sh
@@ -16,18 +16,18 @@ nm -g $libc 2>/dev/null | fgrep -q inet_pton || exit 254
trace_libc_inet_pton_backtrace() {
idx=0
expected[0]="ping[][0-9 \.:]+probe_libc:inet_pton: \([[:xdigit:]]+\)"
- expected[1]=".*inet_pton[[:space:]]\($libc|inlined\)$"
+ expected[1]=".*inet_pton\+0x[[:xdigit:]]+[[:space:]]\($libc|inlined\)$"
case "$(uname -m)" in
s390x)
eventattr='call-graph=dwarf,max-stack=4'
- expected[2]="gaih_inet.*[[:space:]]\($libc|inlined\)$"
- expected[3]="(__GI_)?getaddrinfo[[:space:]]\($libc|inlined\)$"
- expected[4]="main[[:space:]]\(.*/bin/ping.*\)$"
+ expected[2]="gaih_inet.*\+0x[[:xdigit:]]+[[:space:]]\($libc|inlined\)$"
+ expected[3]="(__GI_)?getaddrinfo\+0x[[:xdigit:]]+[[:space:]]\($libc|inlined\)$"
+ expected[4]="main\+0x[[:xdigit:]]+[[:space:]]\(.*/bin/ping.*\)$"
;;
*)
eventattr='max-stack=3'
- expected[2]="getaddrinfo[[:space:]]\($libc\)$"
- expected[3]=".*\(.*/bin/ping.*\)$"
+ expected[2]="getaddrinfo\+0x[[:xdigit:]]+[[:space:]]\($libc\)$"
+ expected[3]=".*\+0x[[:xdigit:]]+[[:space:]]\(.*/bin/ping.*\)$"
;;
esac
--
2.14.3
next prev parent reply other threads:[~2018-05-19 10:55 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-05-19 10:54 [GIT PULL 00/18] perf/core improvements and fixes Arnaldo Carvalho de Melo
2018-05-19 10:54 ` Arnaldo Carvalho de Melo
2018-05-19 10:54 ` [PATCH 01/18] perf config: Call perf_config__init() lazily Arnaldo Carvalho de Melo
2018-05-19 10:54 ` [PATCH 02/18] tools lib api: The tracing_mnt variable doesn't need to be global Arnaldo Carvalho de Melo
2018-05-19 10:54 ` [PATCH 03/18] tools lib api: Unexport 'tracing_path' variable Arnaldo Carvalho de Melo
2018-05-19 10:54 ` [PATCH 04/18] tools lib api fs tracing_path: Introduce get/put_events_file() helpers Arnaldo Carvalho de Melo
2018-05-19 10:54 ` [PATCH 05/18] perf tools: Reuse the path to the tracepoint /events/ directory Arnaldo Carvalho de Melo
2018-05-19 10:54 ` [PATCH 06/18] perf parse-events: Use get/put_events_file() Arnaldo Carvalho de Melo
2018-05-19 10:54 ` [PATCH 07/18] tools lib api fs tracing_path: Introduce opendir() method Arnaldo Carvalho de Melo
2018-05-19 10:54 ` [PATCH 08/18] tools lib api fs tracing_path: Make tracing_events_path private Arnaldo Carvalho de Melo
2018-05-19 10:54 ` [PATCH 09/18] tools include compiler-gcc: Add __pure attribute helper Arnaldo Carvalho de Melo
2018-05-19 10:54 ` [PATCH 10/18] perf tools: Read the cache line size lazily Arnaldo Carvalho de Melo
2018-05-19 10:55 ` [PATCH 11/18] perf tools: No need to unconditionally read the max_stack sysctls Arnaldo Carvalho de Melo
2018-05-19 10:55 ` [PATCH 12/18] perf script: Show virtual addresses instead of offsets Arnaldo Carvalho de Melo
2018-05-19 10:55 ` Arnaldo Carvalho de Melo [this message]
2018-05-19 10:55 ` [PATCH 14/18] perf annotate: Record the min/max cycles Arnaldo Carvalho de Melo
2018-05-19 10:55 ` [PATCH 15/18] perf annotate: Create hotkey 'c' to show " Arnaldo Carvalho de Melo
2018-05-19 10:55 ` [PATCH 16/18] perf bpf: Fixup include and examples install messages Arnaldo Carvalho de Melo
2018-05-19 10:55 ` [PATCH 17/18] perf machine: Add machine__is() to identify machine arch Arnaldo Carvalho de Melo
2018-05-19 10:55 ` [PATCH 18/18] perf tools: Fix kernel_start for PTI on x86 Arnaldo Carvalho de Melo
2018-05-19 11:33 ` [GIT PULL 00/18] perf/core improvements and fixes Ingo Molnar
2018-05-19 11:33 ` Ingo Molnar
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