The goal of this change is to achieve consistent output for symbol address.
Before this, the raw ip is printed for non-callchain and dso offset for
callchain. Mostly what we expect is the raw ip.
This patch does two changes:
- Always print raw ip for resolved symbols.
- Add a new 'dsoff' field if we really need the dso offset, and the
offset is appended to dso name.
v5:
o add helper map__fprintf_dsoname_dsoff() to eliminate repeated dso printing code. (Adrian)
o do not print offset for kernel dso (a.k.a [kernel.kallsyms])
v4:
o also print 'dsoff' for brstack,brstacksym,brstackoff,etc.
v3:
o 'dsoff' implys 'dso' field. (Namhyung)
v2:
o split into two patches. (Adrian)
o do not print offset for unresolved symbols. (Adrian)
Changbin Du (2):
perf: add helper map__fprintf_dsoname_dsoff
perf: script: add new output field 'dsoff' to print dso offset
tools/perf/Documentation/perf-script.txt | 2 +-
tools/perf/builtin-script.c | 60 ++++++++++--------------
tools/perf/util/evsel_fprintf.c | 16 +++----
tools/perf/util/evsel_fprintf.h | 1 +
tools/perf/util/map.c | 13 +++++
tools/perf/util/map.h | 1 +
6 files changed, 46 insertions(+), 47 deletions(-)
--
2.25.1
This adds a new 'dsoff' field to print dso offset for resolved symbols,
and the offset is appended to dso name.
Default output:
$ perf script
ls 2695501 3011030.487017: 500000 cycles: 152cc73ef4b5 get_common_indices.constprop.0+0x155 (/usr/lib/x86_64-linux-gnu/ld-2.31.so)
ls 2695501 3011030.487018: 500000 cycles: ffffffff99045b3e [unknown] ([unknown])
ls 2695501 3011030.487018: 500000 cycles: ffffffff9968e107 [unknown] ([unknown])
ls 2695501 3011030.487018: 500000 cycles: ffffffffc1f54afb [unknown] ([unknown])
ls 2695501 3011030.487018: 500000 cycles: ffffffff9968382f [unknown] ([unknown])
ls 2695501 3011030.487019: 500000 cycles: ffffffff99e00094 [unknown] ([unknown])
ls 2695501 3011030.487019: 500000 cycles: 152cc718a8d0 __errno_location@plt+0x0 (/usr/lib/x86_64-linux-gnu/libselinux.so.1)
Display 'dsoff' field:
$ perf script -F +dsoff
ls 2695501 3011030.487017: 500000 cycles: 152cc73ef4b5 get_common_indices.constprop.0+0x155 (/usr/lib/x86_64-linux-gnu/ld-2.31.so+0x1c4b5)
ls 2695501 3011030.487018: 500000 cycles: ffffffff99045b3e [unknown] ([unknown])
ls 2695501 3011030.487018: 500000 cycles: ffffffff9968e107 [unknown] ([unknown])
ls 2695501 3011030.487018: 500000 cycles: ffffffffc1f54afb [unknown] ([unknown])
ls 2695501 3011030.487018: 500000 cycles: ffffffff9968382f [unknown] ([unknown])
ls 2695501 3011030.487019: 500000 cycles: ffffffff99e00094 [unknown] ([unknown])
ls 2695501 3011030.487019: 500000 cycles: 152cc718a8d0 __errno_location@plt+0x0 (/usr/lib/x86_64-linux-gnu/libselinux.so.1+0x68d0)
ls 2695501 3011030.487019: 500000 cycles: ffffffff992a6db0 [unknown] ([unknown])
Signed-off-by: Changbin Du <[email protected]>
---
tools/perf/Documentation/perf-script.txt | 2 +-
tools/perf/builtin-script.c | 60 ++++++++++--------------
tools/perf/util/evsel_fprintf.c | 16 +++----
tools/perf/util/evsel_fprintf.h | 1 +
4 files changed, 32 insertions(+), 47 deletions(-)
diff --git a/tools/perf/Documentation/perf-script.txt b/tools/perf/Documentation/perf-script.txt
index 777a0d8ba7d1..ff9a52e44688 100644
--- a/tools/perf/Documentation/perf-script.txt
+++ b/tools/perf/Documentation/perf-script.txt
@@ -130,7 +130,7 @@ OPTIONS
-F::
--fields::
Comma separated list of fields to print. Options are:
- comm, tid, pid, time, cpu, event, trace, ip, sym, dso, addr, symoff,
+ comm, tid, pid, time, cpu, event, trace, ip, sym, dso, dsoff, addr, symoff,
srcline, period, iregs, uregs, brstack, brstacksym, flags, bpf-output,
brstackinsn, brstackinsnlen, brstackoff, callindent, insn, insnlen, synth,
phys_addr, metric, misc, srccode, ipc, data_page_size, code_page_size, ins_lat,
diff --git a/tools/perf/builtin-script.c b/tools/perf/builtin-script.c
index 8fba247b798c..e7cb8d904eb5 100644
--- a/tools/perf/builtin-script.c
+++ b/tools/perf/builtin-script.c
@@ -133,6 +133,7 @@ enum perf_output_field {
PERF_OUTPUT_VCPU = 1ULL << 38,
PERF_OUTPUT_CGROUP = 1ULL << 39,
PERF_OUTPUT_RETIRE_LAT = 1ULL << 40,
+ PERF_OUTPUT_DSOFF = 1ULL << 41,
};
struct perf_script {
@@ -174,6 +175,7 @@ struct output_option {
{.str = "ip", .field = PERF_OUTPUT_IP},
{.str = "sym", .field = PERF_OUTPUT_SYM},
{.str = "dso", .field = PERF_OUTPUT_DSO},
+ {.str = "dsoff", .field = PERF_OUTPUT_DSOFF},
{.str = "addr", .field = PERF_OUTPUT_ADDR},
{.str = "symoff", .field = PERF_OUTPUT_SYMOFFSET},
{.str = "srcline", .field = PERF_OUTPUT_SRCLINE},
@@ -574,6 +576,9 @@ static void set_print_ip_opts(struct perf_event_attr *attr)
if (PRINT_FIELD(DSO))
output[type].print_ip_opts |= EVSEL__PRINT_DSO;
+ if (PRINT_FIELD(DSOFF))
+ output[type].print_ip_opts |= EVSEL__PRINT_DSOFF;
+
if (PRINT_FIELD(SYMOFFSET))
output[type].print_ip_opts |= EVSEL__PRINT_SYMOFFSET;
@@ -627,6 +632,10 @@ static int perf_session__check_output_opt(struct perf_session *session)
if (evsel == NULL)
continue;
+ /* 'dsoff' implys 'dso' field */
+ if (output[j].fields & PERF_OUTPUT_DSOFF)
+ output[j].fields |= PERF_OUTPUT_DSO;
+
set_print_ip_opts(&evsel->core.attr);
tod |= output[j].fields & PERF_OUTPUT_TOD;
}
@@ -929,18 +938,12 @@ static int perf_sample__fprintf_brstack(struct perf_sample *sample,
}
printed += fprintf(fp, " 0x%"PRIx64, from);
- if (PRINT_FIELD(DSO)) {
- printed += fprintf(fp, "(");
- printed += map__fprintf_dsoname(alf.map, fp);
- printed += fprintf(fp, ")");
- }
+ if (PRINT_FIELD(DSO))
+ printed += map__fprintf_dsoname_dsoff(alf.map, PRINT_FIELD(DSOFF), alf.addr, fp);
printed += fprintf(fp, "/0x%"PRIx64, to);
- if (PRINT_FIELD(DSO)) {
- printed += fprintf(fp, "(");
- printed += map__fprintf_dsoname(alt.map, fp);
- printed += fprintf(fp, ")");
- }
+ if (PRINT_FIELD(DSO))
+ printed += map__fprintf_dsoname_dsoff(alt.map, PRINT_FIELD(DSOFF), alt.addr, fp);
printed += print_bstack_flags(fp, entries + i);
}
@@ -972,18 +975,12 @@ static int perf_sample__fprintf_brstacksym(struct perf_sample *sample,
thread__find_symbol_fb(thread, sample->cpumode, to, &alt);
printed += symbol__fprintf_symname_offs(alf.sym, &alf, fp);
- if (PRINT_FIELD(DSO)) {
- printed += fprintf(fp, "(");
- printed += map__fprintf_dsoname(alf.map, fp);
- printed += fprintf(fp, ")");
- }
+ if (PRINT_FIELD(DSO))
+ printed += map__fprintf_dsoname_dsoff(alf.map, PRINT_FIELD(DSOFF), alf.addr, fp);
printed += fprintf(fp, "%c", '/');
printed += symbol__fprintf_symname_offs(alt.sym, &alt, fp);
- if (PRINT_FIELD(DSO)) {
- printed += fprintf(fp, "(");
- printed += map__fprintf_dsoname(alt.map, fp);
- printed += fprintf(fp, ")");
- }
+ if (PRINT_FIELD(DSO))
+ printed += map__fprintf_dsoname_dsoff(alt.map, PRINT_FIELD(DSOFF), alt.addr, fp);
printed += print_bstack_flags(fp, entries + i);
}
@@ -1019,17 +1016,11 @@ static int perf_sample__fprintf_brstackoff(struct perf_sample *sample,
to = map__dso_map_ip(alt.map, to);
printed += fprintf(fp, " 0x%"PRIx64, from);
- if (PRINT_FIELD(DSO)) {
- printed += fprintf(fp, "(");
- printed += map__fprintf_dsoname(alf.map, fp);
- printed += fprintf(fp, ")");
- }
+ if (PRINT_FIELD(DSO))
+ printed += map__fprintf_dsoname_dsoff(alf.map, PRINT_FIELD(DSOFF), alf.addr, fp);
printed += fprintf(fp, "/0x%"PRIx64, to);
- if (PRINT_FIELD(DSO)) {
- printed += fprintf(fp, "(");
- printed += map__fprintf_dsoname(alt.map, fp);
- printed += fprintf(fp, ")");
- }
+ if (PRINT_FIELD(DSO))
+ printed += map__fprintf_dsoname_dsoff(alt.map, PRINT_FIELD(DSOFF), alt.addr, fp);
printed += print_bstack_flags(fp, entries + i);
}
@@ -1394,11 +1385,8 @@ static int perf_sample__fprintf_addr(struct perf_sample *sample,
printed += symbol__fprintf_symname(al.sym, fp);
}
- if (PRINT_FIELD(DSO)) {
- printed += fprintf(fp, " (");
- printed += map__fprintf_dsoname(al.map, fp);
- printed += fprintf(fp, ")");
- }
+ if (PRINT_FIELD(DSO))
+ printed += map__fprintf_dsoname_dsoff(al.map, PRINT_FIELD(DSOFF), al.addr, fp);
out:
return printed;
}
@@ -3877,7 +3865,7 @@ int cmd_script(int argc, const char **argv)
"comma separated output fields prepend with 'type:'. "
"+field to add and -field to remove."
"Valid types: hw,sw,trace,raw,synth. "
- "Fields: comm,tid,pid,time,cpu,event,trace,ip,sym,dso,"
+ "Fields: comm,tid,pid,time,cpu,event,trace,ip,sym,dso,dsoff"
"addr,symoff,srcline,period,iregs,uregs,brstack,"
"brstacksym,flags,data_src,weight,bpf-output,brstackinsn,"
"brstackinsnlen,brstackoff,callindent,insn,insnlen,synth,"
diff --git a/tools/perf/util/evsel_fprintf.c b/tools/perf/util/evsel_fprintf.c
index cc80ec554c0a..79e42d66f55b 100644
--- a/tools/perf/util/evsel_fprintf.c
+++ b/tools/perf/util/evsel_fprintf.c
@@ -116,6 +116,7 @@ int sample__fprintf_callchain(struct perf_sample *sample, int left_alignment,
int print_ip = print_opts & EVSEL__PRINT_IP;
int print_sym = print_opts & EVSEL__PRINT_SYM;
int print_dso = print_opts & EVSEL__PRINT_DSO;
+ int print_dsoff = print_opts & EVSEL__PRINT_DSOFF;
int print_symoffset = print_opts & EVSEL__PRINT_SYMOFFSET;
int print_oneline = print_opts & EVSEL__PRINT_ONELINE;
int print_srcline = print_opts & EVSEL__PRINT_SRCLINE;
@@ -171,11 +172,8 @@ int sample__fprintf_callchain(struct perf_sample *sample, int left_alignment,
}
}
- if (print_dso && (!sym || !sym->inlined)) {
- printed += fprintf(fp, " (");
- printed += map__fprintf_dsoname(map, fp);
- printed += fprintf(fp, ")");
- }
+ if (print_dso && (!sym || !sym->inlined))
+ printed += map__fprintf_dsoname_dsoff(map, print_dsoff, addr, fp);
if (print_srcline)
printed += map__fprintf_srcline(map, addr, "\n ", fp);
@@ -209,6 +207,7 @@ int sample__fprintf_sym(struct perf_sample *sample, struct addr_location *al,
int print_ip = print_opts & EVSEL__PRINT_IP;
int print_sym = print_opts & EVSEL__PRINT_SYM;
int print_dso = print_opts & EVSEL__PRINT_DSO;
+ int print_dsoff = print_opts & EVSEL__PRINT_DSOFF;
int print_symoffset = print_opts & EVSEL__PRINT_SYMOFFSET;
int print_srcline = print_opts & EVSEL__PRINT_SRCLINE;
int print_unknown_as_addr = print_opts & EVSEL__PRINT_UNKNOWN_AS_ADDR;
@@ -234,11 +233,8 @@ int sample__fprintf_sym(struct perf_sample *sample, struct addr_location *al,
}
}
- if (print_dso) {
- printed += fprintf(fp, " (");
- printed += map__fprintf_dsoname(al->map, fp);
- printed += fprintf(fp, ")");
- }
+ if (print_dso)
+ printed += map__fprintf_dsoname_dsoff(al->map, print_dsoff, al->addr, fp);
if (print_srcline)
printed += map__fprintf_srcline(al->map, al->addr, "\n ", fp);
diff --git a/tools/perf/util/evsel_fprintf.h b/tools/perf/util/evsel_fprintf.h
index 3093d096c29f..c8a9fac2f2dd 100644
--- a/tools/perf/util/evsel_fprintf.h
+++ b/tools/perf/util/evsel_fprintf.h
@@ -26,6 +26,7 @@ int evsel__fprintf(struct evsel *evsel, struct perf_attr_details *details, FILE
#define EVSEL__PRINT_UNKNOWN_AS_ADDR (1<<6)
#define EVSEL__PRINT_CALLCHAIN_ARROW (1<<7)
#define EVSEL__PRINT_SKIP_IGNORED (1<<8)
+#define EVSEL__PRINT_DSOFF (1<<9)
struct addr_location;
struct perf_event_attr;
--
2.25.1
oops, I missed one patch. please ignore this.
On Tue, Apr 18, 2023 at 11:15:17AM +0800, Changbin Du wrote:
> The goal of this change is to achieve consistent output for symbol address.
> Before this, the raw ip is printed for non-callchain and dso offset for
> callchain. Mostly what we expect is the raw ip.
>
> This patch does two changes:
> - Always print raw ip for resolved symbols.
> - Add a new 'dsoff' field if we really need the dso offset, and the
> offset is appended to dso name.
>
> v5:
> o add helper map__fprintf_dsoname_dsoff() to eliminate repeated dso printing code. (Adrian)
> o do not print offset for kernel dso (a.k.a [kernel.kallsyms])
> v4:
> o also print 'dsoff' for brstack,brstacksym,brstackoff,etc.
> v3:
> o 'dsoff' implys 'dso' field. (Namhyung)
> v2:
> o split into two patches. (Adrian)
> o do not print offset for unresolved symbols. (Adrian)
>
> Changbin Du (2):
> perf: add helper map__fprintf_dsoname_dsoff
> perf: script: add new output field 'dsoff' to print dso offset
>
> tools/perf/Documentation/perf-script.txt | 2 +-
> tools/perf/builtin-script.c | 60 ++++++++++--------------
> tools/perf/util/evsel_fprintf.c | 16 +++----
> tools/perf/util/evsel_fprintf.h | 1 +
> tools/perf/util/map.c | 13 +++++
> tools/perf/util/map.h | 1 +
> 6 files changed, 46 insertions(+), 47 deletions(-)
>
> --
> 2.25.1
>
--
Cheers,
Changbin Du