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Date: Fri, 14 Apr 2023 11:23:53 +0800
From: Changbin Du <changbin.du@...wei.com>
To: Adrian Hunter <adrian.hunter@...el.com>
CC: Changbin Du <changbin.du@...wei.com>,
Mark Rutland <mark.rutland@....com>,
Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
Jiri Olsa <jolsa@...nel.org>,
Namhyung Kim <namhyung@...nel.org>,
Ian Rogers <irogers@...gle.com>,
<linux-perf-users@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
Hui Wang <hw.huiwang@...wei.com>,
Peter Zijlstra <peterz@...radead.org>,
Arnaldo Carvalho de Melo <acme@...nel.org>,
Ingo Molnar <mingo@...hat.com>
Subject: Re: [PATCH v3 2/2] perf: script: add new output field 'dsoff' to
print dso offset
On Tue, Apr 11, 2023 at 12:15:53PM +0300, Adrian Hunter wrote:
> On 10/04/23 10:08, Changbin Du wrote:
> > 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@...+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@...+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 <changbin.du@...wei.com>
> > ---
> > tools/perf/Documentation/perf-script.txt | 2 +-
> > tools/perf/builtin-script.c | 9 ++++++++-
> > tools/perf/util/evsel_fprintf.c | 6 ++++++
> > tools/perf/util/evsel_fprintf.h | 1 +
> > 4 files changed, 16 insertions(+), 2 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 a792214d1af8..bdc5de94cf43 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 +576,11 @@ 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)) {
> > + /* 'dsoff' implys 'dso' field for printing */
> > + output[type].print_ip_opts |= EVSEL__PRINT_DSO | EVSEL__PRINT_DSOFF;
> > + }
> > +
> > if (PRINT_FIELD(SYMOFFSET))
> > output[type].print_ip_opts |= EVSEL__PRINT_SYMOFFSET;
> >
> > @@ -3881,7 +3888,7 @@ 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 1fb8044d402e..ae8333772c76 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;
> > @@ -174,6 +175,8 @@ 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);
> > + if (print_dsoff && map && map->dso)
> > + printed += fprintf(fp, "+0x%lx", addr);
> > printed += fprintf(fp, ")");
> > }
> >
> > @@ -209,6 +212,7 @@ 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;
> > @@ -237,6 +241,8 @@ 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);
> > + if (print_dsoff && al->map && al->map->dso)
> > + printed += fprintf(fp, "+0x%lx", al->addr);
>
> There are a lot of map__fprintf_dsoname() callers that should
> also support "dsoff". In fact, probably all of them except
> perf_sample__fprintf_callindent().
>
Yes, just added all except perf_sample__fprintf_callindent(). Thanks for
reminding me.
> > printed += fprintf(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;
>
--
Cheers,
Changbin Du
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