perf tools: Add cpumode to struct perf_sample

To avoid parsing event->header.misc in many locations.

This will also allow setting perf.sample.{ip,cpumode} in a single place,
from tracepoint fields, as needed by 'perf kvm' with PPC guests, where
the guest hardware counters is not available at the host.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Hemant Kumar <hemant@linux.vnet.ibm.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>
Cc: Ravi Bangoria <ravi.bangoria@linux.vnet.ibm.com>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-qp3yradhyt6q3wl895b1aat0@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

6 files changed, 17 insertions, 22 deletions

diff --git a/tools/perf/util/build-id.c b/tools/perf/util/build-id.c
index f1479ee..0573c2e 100644
--- a/tools/perf/util/build-id.c
+++ b/tools/perf/util/build-id.c
@@ -28,7 +28,6 @@ int build_id__mark_dso_hit(struct perf_tool *tool __maybe_unused,
 			   struct machine *machine)
 {
 	struct addr_location al;
-	u8 cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK;
 	struct thread *thread = machine__findnew_thread(machine, sample->pid,
 							sample->tid);
 
@@ -38,7 +37,7 @@ int build_id__mark_dso_hit(struct perf_tool *tool __maybe_unused,
 		return -1;
 	}
 
-	thread__find_addr_map(thread, cpumode, MAP__FUNCTION, sample->ip, &al);
+	thread__find_addr_map(thread, sample->cpumode, MAP__FUNCTION, sample->ip, &al);
 
 	if (al.map != NULL)
 		al.map->dso->hit = 1;
diff --git a/tools/perf/util/event.c b/tools/perf/util/event.c
index 7bad5c3..f679caa 100644
--- a/tools/perf/util/event.c
+++ b/tools/perf/util/event.c
@@ -1295,12 +1295,11 @@ void thread__find_addr_location(struct thread *thread,
  * Callers need to drop the reference to al->thread, obtained in
  * machine__findnew_thread()
  */
-int perf_event__preprocess_sample(const union perf_event *event,
+int perf_event__preprocess_sample(const union perf_event *event __maybe_unused,
 				  struct machine *machine,
 				  struct addr_location *al,
 				  struct perf_sample *sample)
 {
-	u8 cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK;
 	struct thread *thread = machine__findnew_thread(machine, sample->pid,
 							sample->tid);
 
@@ -1315,11 +1314,11 @@ int perf_event__preprocess_sample(const union perf_event *event,
 	 * events, but for older perf.data files there was no such thing, so do
 	 * it now.
 	 */
-	if (cpumode == PERF_RECORD_MISC_KERNEL &&
+	if (sample->cpumode == PERF_RECORD_MISC_KERNEL &&
 	    machine__kernel_map(machine) == NULL)
 		machine__create_kernel_maps(machine);
 
-	thread__find_addr_map(thread, cpumode, MAP__FUNCTION, sample->ip, al);
+	thread__find_addr_map(thread, sample->cpumode, MAP__FUNCTION, sample->ip, al);
 	dump_printf(" ...... dso: %s\n",
 		    al->map ? al->map->dso->long_name :
 			al->level == 'H' ? "[hypervisor]" : "<not found>");
@@ -1395,16 +1394,14 @@ bool sample_addr_correlates_sym(struct perf_event_attr *attr)
 	return false;
 }
 
-void perf_event__preprocess_sample_addr(union perf_event *event,
+void perf_event__preprocess_sample_addr(union perf_event *event __maybe_unused,
 					struct perf_sample *sample,
 					struct thread *thread,
 					struct addr_location *al)
 {
-	u8 cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK;
-
-	thread__find_addr_map(thread, cpumode, MAP__FUNCTION, sample->addr, al);
+	thread__find_addr_map(thread, sample->cpumode, MAP__FUNCTION, sample->addr, al);
 	if (!al->map)
-		thread__find_addr_map(thread, cpumode, MAP__VARIABLE,
+		thread__find_addr_map(thread, sample->cpumode, MAP__VARIABLE,
 				      sample->addr, al);
 
 	al->cpu = sample->cpu;
diff --git a/tools/perf/util/event.h b/tools/perf/util/event.h
index b7ffb7e..f5a2e67 100644
--- a/tools/perf/util/event.h
+++ b/tools/perf/util/event.h
@@ -192,6 +192,7 @@ struct perf_sample {
 	u64 data_src;
 	u32 flags;
 	u16 insn_len;
+	u8  cpumode;
 	void *raw_data;
 	struct ip_callchain *callchain;
 	struct branch_stack *branch_stack;
diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c
index 0902fe4..738ce22 100644
--- a/tools/perf/util/evsel.c
+++ b/tools/perf/util/evsel.c
@@ -1643,6 +1643,7 @@ int perf_evsel__parse_sample(struct perf_evsel *evsel, union perf_event *event,
 	data->stream_id = data->id = data->time = -1ULL;
 	data->period = evsel->attr.sample_period;
 	data->weight = 0;
+	data->cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK;
 
 	if (event->header.type != PERF_RECORD_SAMPLE) {
 		if (!evsel->attr.sample_id_all)
diff --git a/tools/perf/util/machine.c b/tools/perf/util/machine.c
index ad79297..80b9b6a 100644
--- a/tools/perf/util/machine.c
+++ b/tools/perf/util/machine.c
@@ -1301,9 +1301,8 @@ out_problem:
 
 int machine__process_mmap2_event(struct machine *machine,
 				 union perf_event *event,
-				 struct perf_sample *sample __maybe_unused)
+				 struct perf_sample *sample)
 {
-	u8 cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK;
 	struct thread *thread;
 	struct map *map;
 	enum map_type type;
@@ -1312,8 +1311,8 @@ int machine__process_mmap2_event(struct machine *machine,
 	if (dump_trace)
 		perf_event__fprintf_mmap2(event, stdout);
 
-	if (cpumode == PERF_RECORD_MISC_GUEST_KERNEL ||
-	    cpumode == PERF_RECORD_MISC_KERNEL) {
+	if (sample->cpumode == PERF_RECORD_MISC_GUEST_KERNEL ||
+	    sample->cpumode == PERF_RECORD_MISC_KERNEL) {
 		ret = machine__process_kernel_mmap_event(machine, event);
 		if (ret < 0)
 			goto out_problem;
@@ -1355,9 +1354,8 @@ out_problem:
 }
 
 int machine__process_mmap_event(struct machine *machine, union perf_event *event,
-				struct perf_sample *sample __maybe_unused)
+				struct perf_sample *sample)
 {
-	u8 cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK;
 	struct thread *thread;
 	struct map *map;
 	enum map_type type;
@@ -1366,8 +1364,8 @@ int machine__process_mmap_event(struct machine *machine, union perf_event *event
 	if (dump_trace)
 		perf_event__fprintf_mmap(event, stdout);
 
-	if (cpumode == PERF_RECORD_MISC_GUEST_KERNEL ||
-	    cpumode == PERF_RECORD_MISC_KERNEL) {
+	if (sample->cpumode == PERF_RECORD_MISC_GUEST_KERNEL ||
+	    sample->cpumode == PERF_RECORD_MISC_KERNEL) {
 		ret = machine__process_kernel_mmap_event(machine, event);
 		if (ret < 0)
 			goto out_problem;
diff --git a/tools/perf/util/session.c b/tools/perf/util/session.c
index 60b3593..4abd85c 100644
--- a/tools/perf/util/session.c
+++ b/tools/perf/util/session.c
@@ -1107,12 +1107,11 @@ static struct machine *machines__find_for_cpumode(struct machines *machines,
 					       union perf_event *event,
 					       struct perf_sample *sample)
 {
-	const u8 cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK;
 	struct machine *machine;
 
 	if (perf_guest &&
-	    ((cpumode == PERF_RECORD_MISC_GUEST_KERNEL) ||
-	     (cpumode == PERF_RECORD_MISC_GUEST_USER))) {
+	    ((sample->cpumode == PERF_RECORD_MISC_GUEST_KERNEL) ||
+	     (sample->cpumode == PERF_RECORD_MISC_GUEST_USER))) {
 		u32 pid;
 
 		if (event->header.type == PERF_RECORD_MMAP