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perf script: Add printing of sample address

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Resolve to a function or variable if possible and if the sym option is
enabled.

Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/1306782503-22002-1-git-send-email-dsahern@gmail.com
Signed-off-by: David Ahern <dsahern@gmail.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
David Ahern 2011-05-30 13:08:23 -06:00 • committed by Arnaldo Carvalho de Melo
parent 610723f24e
commit 7cec092238
4 changed files with 82 additions and 11 deletions
Download patch file Download diff file Expand all files Collapse all files

84
tools/perf/builtin-script.c
View file

@ -33,6 +33,7 @@ enum perf_output_field {
PERF_OUTPUT_IP = 1U << 7,
PERF_OUTPUT_SYM = 1U << 8,
PERF_OUTPUT_DSO = 1U << 9,
PERF_OUTPUT_ADDR = 1U << 10,
};
struct output_option {
@ -49,6 +50,7 @@ struct output_option {
{.str = "ip", .field = PERF_OUTPUT_IP},
{.str = "sym", .field = PERF_OUTPUT_SYM},
{.str = "dso", .field = PERF_OUTPUT_DSO},
{.str = "addr", .field = PERF_OUTPUT_ADDR},
};
/* default set to maintain compatibility with current format */
@ -173,14 +175,22 @@ static int perf_evsel__check_attr(struct perf_evsel *evsel,
!(attr->sample_type & PERF_SAMPLE_CALLCHAIN))
symbol_conf.use_callchain = false;
}
if (PRINT_FIELD(SYM) && !PRINT_FIELD(IP)) {
pr_err("Display of symbols requested but IP is not selected.\n"
"No addresses to convert to symbols.\n");
if (PRINT_FIELD(ADDR) &&
perf_event_attr__check_stype(attr, PERF_SAMPLE_ADDR, "ADDR",
PERF_OUTPUT_ADDR))
return -EINVAL;
if (PRINT_FIELD(SYM) && !PRINT_FIELD(IP) && !PRINT_FIELD(ADDR)) {
pr_err("Display of symbols requested but neither sample IP nor "
"sample address\nis selected. Hence, no addresses to convert "
"to symbols.\n");
return -EINVAL;
}
if (PRINT_FIELD(DSO) && !PRINT_FIELD(IP)) {
pr_err("Display of DSO requested but IP is not selected.\n"
"No addresses to convert to dso.\n");
if (PRINT_FIELD(DSO) && !PRINT_FIELD(IP) && !PRINT_FIELD(ADDR)) {
pr_err("Display of DSO requested but neither sample IP nor "
"sample address\nis selected. Hence, no addresses to convert "
"to DSO.\n");
return -EINVAL;
}
@ -288,6 +298,63 @@ static void print_sample_start(struct perf_sample *sample,
}
}
static bool sample_addr_correlates_sym(struct perf_event_attr *attr)
{
if ((attr->type == PERF_TYPE_SOFTWARE) &&
((attr->config == PERF_COUNT_SW_PAGE_FAULTS) ||
(attr->config == PERF_COUNT_SW_PAGE_FAULTS_MIN) ||
(attr->config == PERF_COUNT_SW_PAGE_FAULTS_MAJ)))
return true;
return false;
}
static void print_sample_addr(union perf_event *event,
struct perf_sample *sample,
struct perf_session *session,
struct thread *thread,
struct perf_event_attr *attr)
{
struct addr_location al;
u8 cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK;
const char *symname, *dsoname;
printf("%16" PRIx64, sample->addr);
if (!sample_addr_correlates_sym(attr))
return;
thread__find_addr_map(thread, session, cpumode, MAP__FUNCTION,
event->ip.pid, sample->addr, &al);
if (!al.map)
thread__find_addr_map(thread, session, cpumode, MAP__VARIABLE,
event->ip.pid, sample->addr, &al);
al.cpu = sample->cpu;
al.sym = NULL;
if (al.map)
al.sym = map__find_symbol(al.map, al.addr, NULL);
if (PRINT_FIELD(SYM)) {
if (al.sym && al.sym->name)
symname = al.sym->name;
else
symname = "";
printf(" %16s", symname);
}
if (PRINT_FIELD(DSO)) {
if (al.map && al.map->dso && al.map->dso->name)
dsoname = al.map->dso->name;
else
dsoname = "";
printf(" (%s)", dsoname);
}
}
static void process_event(union perf_event *event __unused,
struct perf_sample *sample,
struct perf_evsel *evsel,
@ -305,6 +372,9 @@ static void process_event(union perf_event *event __unused,
print_trace_event(sample->cpu, sample->raw_data,
sample->raw_size);
if (PRINT_FIELD(ADDR))
print_sample_addr(event, sample, session, thread, attr);
if (PRINT_FIELD(IP)) {
if (!symbol_conf.use_callchain)
printf(" ");
@ -1003,7 +1073,7 @@ static const struct option options[] = {
OPT_STRING(0, "symfs", &symbol_conf.symfs, "directory",
"Look for files with symbols relative to this directory"),
OPT_CALLBACK('f', "fields", NULL, "str",
"comma separated output fields prepend with 'type:'. Valid types: hw,sw,trace,raw. Fields: comm,tid,pid,time,cpu,event,trace,ip,sym,dso",
"comma separated output fields prepend with 'type:'. Valid types: hw,sw,trace,raw. Fields: comm,tid,pid,time,cpu,event,trace,ip,sym,dso,addr",
parse_output_fields),
OPT_END()