[tip:perf/core] perf script: Add printing of sample address

[tip-bot for David Ahern <dsahern@gmail.com>]

Commit-ID:  7cec0922389e080d11ec43dd23aa778e136bd1e1
Gitweb:     http://git.kernel.org/tip/7cec0922389e080d11ec43dd23aa778e136bd1e1
Author:     David Ahern <dsahern@gmail.com>
AuthorDate: Mon, 30 May 2011 13:08:23 -0600
Committer:  Arnaldo Carvalho de Melo <acme@redhat.com>
CommitDate: Thu, 2 Jun 2011 13:31:01 -0300

perf script: Add printing of sample address

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>
---
 tools/perf/Documentation/perf-script.txt |    4 +-
 tools/perf/builtin-script.c              |   84 +++++++++++++++++++++++++++---
 tools/perf/util/evsel.c                  |    1 +
 tools/perf/util/session.c                |    4 +-
 4 files changed, 82 insertions(+), 11 deletions(-)

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 a8bd00f..3056b45 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 +298,63 @@ 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()
diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c
index 0239eb8..a03a36b 100644
--- a/tools/perf/util/evsel.c
+++ b/tools/perf/util/evsel.c
@@ -377,6 +377,7 @@ 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 0dd4182..b723f21 100644
--- a/tools/perf/util/session.c
+++ b/tools/perf/util/session.c
@@ -708,9 +708,9 @@ 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);