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SubjectRe: [PATCH -tip v4 0/7] perf: Introduce branch sub commands
On 05/30/2011 07:31 AM, Akihiro Nagai wrote:
>> The sample address can be converted to symbols and the output can be
>> added to perf-script rather easily. Attached is an example. I was going
>> to submit it back in April and got distracted. I'll rebase, move the
>> addr->sym conversion to a function and submit later today.
> OK.
> I agreed with implementing it on perf script.
> I'd like to try it.

Updated patch. It applies on top of:
http://lkml.org/lkml/2011/5/27/385

Hopefully for BTS you only have to change the sample_addr_correlates_sym
function.

I still need to look into out why some of the addresses for page-faults
are not resolving to symbols.

David
diff --git a/tools/perf/Documentation/perf-script.txt b/tools/perf/Documentation/perf-script.txt
index 1e744c2..c6068cb 100644
--- a/tools/perf/Documentation/perf-script.txt
+++ b/tools/perf/Documentation/perf-script.txt
@@ -115,8 +115,8 @@ OPTIONS
-f::
--fields::
Comma separated list of fields to print. Options are:
- comm, tid, pid, time, cpu, event, trace, ip, sym, dso. Field
- list can be prepended with the type, trace, sw or hw,
+ comm, tid, pid, time, cpu, event, trace, ip, sym, dso, addr.
+ Field list can be prepended with the type, trace, sw or hw,
to indicate to which event type the field list applies.
e.g., -f sw:comm,tid,time,ip,sym and -f trace:time,cpu,trace

diff --git a/tools/perf/builtin-script.c b/tools/perf/builtin-script.c
index 6fcaa87..841ce49 100644
--- a/tools/perf/builtin-script.c
+++ b/tools/perf/builtin-script.c
@@ -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 +298,59 @@ 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);
+ 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 +368,9 @@ 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 +1069,7 @@ 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,sym",
+ "comma separated output fields prepend with 'type:'. Valid types: hw,sw,trace,raw. Fields: comm,tid,pid,time,cpu,event,trace,sym,dso,addr",
parse_output_fields),

OPT_END()
diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c
index cca29ed..669e18a 100644
--- a/tools/perf/util/evsel.c
+++ b/tools/perf/util/evsel.c
@@ -361,6 +361,7 @@ int perf_event__parse_sample(const union perf_event *event, u64 type,
array++;
}

+ data->addr = 0;
if (type & PERF_SAMPLE_ADDR) {
data->addr = *array;
array++;
diff --git a/tools/perf/util/session.c b/tools/perf/util/session.c
index 360d8c4..21e6c91 100644
--- a/tools/perf/util/session.c
+++ b/tools/perf/util/session.c
@@ -698,9 +698,9 @@ static void dump_sample(struct perf_session *session, union perf_event *event,
if (!dump_trace)
return;

- printf("(IP, %d): %d/%d: %#" PRIx64 " period: %" PRIu64 "\n",
+ printf("(IP, %d): %d/%d: %#" PRIx64 " period: %" PRIu64 " addr: %#" PRIx64 "\n",
event->header.misc, sample->pid, sample->tid, sample->ip,
- sample->period);
+ sample->period, sample->addr);

if (session->sample_type & PERF_SAMPLE_CALLCHAIN)
callchain__printf(sample);
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