perf tools: Make event__preprocess_sample parse the sample

Simplifying the tools that were using both in sequence and allowing
upcoming simplifications, such as Arun's patch to sort by cpus.

Cc: David S. Miller <davem@davemloft.net>
Cc: Frédéric Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Tom Zanussi <tzanussi@gmail.com>
LKML-Reference: <new-submission>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

8 files changed, 41 insertions, 44 deletions

diff --git a/tools/perf/builtin-annotate.c b/tools/perf/builtin-annotate.c
index 96db5248e995..fd20670ce986 100644
--- a/tools/perf/builtin-annotate.c
+++ b/tools/perf/builtin-annotate.c
@@ -61,11 +61,9 @@ static int hists__add_entry(struct hists *self, struct addr_location *al)
 static int process_sample_event(event_t *event, struct perf_session *session)
 {
         struct addr_location al;
+        struct sample_data data;
 
-        dump_printf("(IP, %d): %d: %#Lx\n", event->header.misc,
-                    event->ip.pid, event->ip.ip);
-
-        if (event__preprocess_sample(event, session, &al, NULL) < 0) {
+        if (event__preprocess_sample(event, session, &al, &data, NULL) < 0) {
                 pr_warning("problem processing %d event, skipping it.\n",
                            event->header.type);
                 return -1;
diff --git a/tools/perf/builtin-diff.c b/tools/perf/builtin-diff.c
index a6e2fdc7a04e..39e6627ebb96 100644
--- a/tools/perf/builtin-diff.c
+++ b/tools/perf/builtin-diff.c
@@ -35,10 +35,7 @@ static int diff__process_sample_event(event_t *event, struct perf_session *sessi
         struct addr_location al;
         struct sample_data data = { .period = 1, };
 
-        dump_printf("(IP, %d): %d: %#Lx\n", event->header.misc,
-                    event->ip.pid, event->ip.ip);
-
-        if (event__preprocess_sample(event, session, &al, NULL) < 0) {
+        if (event__preprocess_sample(event, session, &al, &data, NULL) < 0) {
                 pr_warning("problem processing %d event, skipping it.\n",
                            event->header.type);
                 return -1;
@@ -47,8 +44,6 @@ static int diff__process_sample_event(event_t *event, struct perf_session *sessi
         if (al.filtered || al.sym == NULL)
                 return 0;
 
-        event__parse_sample(event, session->sample_type, &data);
-
         if (hists__add_entry(&session->hists, &al, data.period)) {
                 pr_warning("problem incrementing symbol period, skipping event\n");
                 return -1;
diff --git a/tools/perf/builtin-report.c b/tools/perf/builtin-report.c
index 207da1849800..371a3c995806 100644
--- a/tools/perf/builtin-report.c
+++ b/tools/perf/builtin-report.c
@@ -155,31 +155,7 @@ static int process_sample_event(event_t *event, struct perf_session *session)
         struct addr_location al;
         struct perf_event_attr *attr;
 
-        event__parse_sample(event, session->sample_type, &data);
-
-        dump_printf("(IP, %d): %d/%d: %#Lx period: %Ld cpu:%d\n",
-                    event->header.misc, data.pid, data.tid, data.ip,
-                    data.period, data.cpu);
-
-        if (session->sample_type & PERF_SAMPLE_CALLCHAIN) {
-                unsigned int i;
-
-                dump_printf("... chain: nr:%Lu\n", data.callchain->nr);
-
-                if (!ip_callchain__valid(data.callchain, event)) {
-                        pr_debug("call-chain problem with event, "
-                                 "skipping it.\n");
-                        return 0;
-                }
-
-                if (dump_trace) {
-                        for (i = 0; i < data.callchain->nr; i++)
-                                dump_printf("..... %2d: %016Lx\n",
-                                            i, data.callchain->ips[i]);
-                }
-        }
-
-        if (event__preprocess_sample(event, session, &al, NULL) < 0) {
+        if (event__preprocess_sample(event, session, &al, &data, NULL) < 0) {
                 fprintf(stderr, "problem processing %d event, skipping it.\n",
                         event->header.type);
                 return -1;
diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c
index 45014ef11059..1e8e92e317b9 100644
--- a/tools/perf/builtin-top.c
+++ b/tools/perf/builtin-top.c
@@ -983,6 +983,7 @@ static void event__process_sample(const event_t *self,
         u64 ip = self->ip.ip;
         struct sym_entry *syme;
         struct addr_location al;
+        struct sample_data data;
         struct machine *machine;
         u8 origin = self->header.misc & PERF_RECORD_MISC_CPUMODE_MASK;
 
@@ -1025,7 +1026,8 @@ static void event__process_sample(const event_t *self,
         if (self->header.misc & PERF_RECORD_MISC_EXACT_IP)
                 exact_samples++;
 
-        if (event__preprocess_sample(self, session, &al, symbol_filter) < 0 ||
+        if (event__preprocess_sample(self, session, &al, &data,
+                                     symbol_filter) < 0 ||
             al.filtered)
                 return;
 
diff --git a/tools/perf/util/callchain.c b/tools/perf/util/callchain.c
index 62b69ad4aa73..e63c997d6c1b 100644
--- a/tools/perf/util/callchain.c
+++ b/tools/perf/util/callchain.c
@@ -18,7 +18,7 @@
 #include "util.h"
 #include "callchain.h"
 
-bool ip_callchain__valid(struct ip_callchain *chain, event_t *event)
+bool ip_callchain__valid(struct ip_callchain *chain, const event_t *event)
 {
         unsigned int chain_size = event->header.size;
         chain_size -= (unsigned long)&event->ip.__more_data - (unsigned long)event;
diff --git a/tools/perf/util/callchain.h b/tools/perf/util/callchain.h
index 1ca73e4a2723..809850fb75fb 100644
--- a/tools/perf/util/callchain.h
+++ b/tools/perf/util/callchain.h
@@ -60,5 +60,5 @@ int register_callchain_param(struct callchain_param *param);
 int append_chain(struct callchain_node *root, struct ip_callchain *chain,
                  struct map_symbol *syms);
 
-bool ip_callchain__valid(struct ip_callchain *chain, event_t *event);
+bool ip_callchain__valid(struct ip_callchain *chain, const event_t *event);
 #endif  /* __PERF_CALLCHAIN_H */
diff --git a/tools/perf/util/event.c b/tools/perf/util/event.c
index 891753255f54..ed3e14ff6df0 100644
--- a/tools/perf/util/event.c
+++ b/tools/perf/util/event.c
@@ -655,11 +655,36 @@ static void dso__calc_col_width(struct dso *self)
 }
 
 int event__preprocess_sample(const event_t *self, struct perf_session *session,
-                             struct addr_location *al, symbol_filter_t filter)
+                             struct addr_location *al, struct sample_data *data,
+                             symbol_filter_t filter)
 {
         u8 cpumode = self->header.misc & PERF_RECORD_MISC_CPUMODE_MASK;
-        struct thread *thread = perf_session__findnew(session, self->ip.pid);
+        struct thread *thread;
+
+        event__parse_sample(self, session->sample_type, data);
+
+        dump_printf("(IP, %d): %d/%d: %#Lx period: %Ld cpu:%d\n",
+                    self->header.misc, data->pid, data->tid, data->ip,
+                    data->period, data->cpu);
+
+        if (session->sample_type & PERF_SAMPLE_CALLCHAIN) {
+                unsigned int i;
+
+                dump_printf("... chain: nr:%Lu\n", data->callchain->nr);
 
+                if (!ip_callchain__valid(data->callchain, self)) {
+                        pr_debug("call-chain problem with event, "
+                                 "skipping it.\n");
+                        goto out_filtered;
+                }
+
+                if (dump_trace) {
+                        for (i = 0; i < data->callchain->nr; i++)
+                                dump_printf("..... %2d: %016Lx\n",
+                                            i, data->callchain->ips[i]);
+                }
+        }
+        thread = perf_session__findnew(session, self->ip.pid);
         if (thread == NULL)
                 return -1;
 
@@ -724,9 +749,9 @@ out_filtered:
         return 0;
 }
 
-int event__parse_sample(event_t *event, u64 type, struct sample_data *data)
+int event__parse_sample(const event_t *event, u64 type, struct sample_data *data)
 {
-        u64 *array = event->sample.array;
+        const u64 *array = event->sample.array;
 
         if (type & PERF_SAMPLE_IP) {
                 data->ip = event->ip.ip;
diff --git a/tools/perf/util/event.h b/tools/perf/util/event.h
index 8577085db067..887ee63bbb62 100644
--- a/tools/perf/util/event.h
+++ b/tools/perf/util/event.h
@@ -157,8 +157,9 @@ int event__process_task(event_t *self, struct perf_session *session);
 
 struct addr_location;
 int event__preprocess_sample(const event_t *self, struct perf_session *session,
-                             struct addr_location *al, symbol_filter_t filter);
-int event__parse_sample(event_t *event, u64 type, struct sample_data *data);
+                             struct addr_location *al, struct sample_data *data,
+                             symbol_filter_t filter);
+int event__parse_sample(const event_t *event, u64 type, struct sample_data *data);
 
 extern const char *event__name[];