From: Stephane Eranian <eranian@google.com>
Date: Thu, 24 Jan 2013 15:10:40 +0000 (+0100)
Subject: perf machine: Detect data vs. text mappings
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=bad4091791b0bb8c2d7919ddefe2f0d109299b5a;p=GitHub%2FLineageOS%2Fandroid_kernel_samsung_universal7580.git

perf machine: Detect data vs. text mappings

Leverages the PERF_RECORD_MISC_MMAP_DATA bit in the RECORD_MMAP record
header. When the bit is set then the mapping type is set to
MAP__VARIABLE.

Signed-off-by: Stephane Eranian <eranian@google.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung.kim@lge.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1359040242-8269-17-git-send-email-eranian@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---

diff --git a/tools/perf/util/machine.c b/tools/perf/util/machine.c
index d77ba869d7e..b2ecad6ec46 100644
--- a/tools/perf/util/machine.c
+++ b/tools/perf/util/machine.c
@@ -955,6 +955,7 @@ int machine__process_mmap_event(struct machine *machine, union perf_event *event
 	u8 cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK;
 	struct thread *thread;
 	struct map *map;
+	enum map_type type;
 	int ret = 0;
 
 	if (dump_trace)
@@ -971,10 +972,17 @@ int machine__process_mmap_event(struct machine *machine, union perf_event *event
 	thread = machine__findnew_thread(machine, event->mmap.pid);
 	if (thread == NULL)
 		goto out_problem;
+
+	if (event->header.misc & PERF_RECORD_MISC_MMAP_DATA)
+		type = MAP__VARIABLE;
+	else
+		type = MAP__FUNCTION;
+
 	map = map__new(&machine->user_dsos, event->mmap.start,
 			event->mmap.len, event->mmap.pgoff,
 			event->mmap.pid, event->mmap.filename,
-			MAP__FUNCTION);
+			type);
+
 	if (map == NULL)
 		goto out_problem;