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authorStephane Eranian <eranian@google.com>2013-01-24 16:10:39 +0100
committerArnaldo Carvalho de Melo <acme@redhat.com>2013-04-01 12:19:02 -0300
commit2fe85427e3bf65d791700d065132772fc26e4d75 (patch)
tree8561cc61ebf26c519dec1ea0340e5af295632ebb /kernel/events
parent9ad64c0f481c37a63dd39842a0fd264bee44a097 (diff)
downloadvexpress-lsk-2fe85427e3bf65d791700d065132772fc26e4d75.tar.gz
perf: Add PERF_RECORD_MISC_MMAP_DATA to RECORD_MMAP
Type of mapping was lost and made it hard for a tool to distinguish code vs. data mmaps. Perf has the ability to distinguish the two. Use a bit in the header->misc bitmask to keep track of the mmap type. If PERF_RECORD_MISC_MMAP_DATA is set then the mapping is not executable (!VM_EXEC). If not set, then the mapping is executable. Signed-off-by: Stephane Eranian <eranian@google.com> Cc: peterz@infradead.org Cc: ak@linux.intel.com Cc: acme@redhat.com Cc: jolsa@redhat.com Cc: namhyung.kim@lge.com Link: http://lkml.kernel.org/r/1359040242-8269-16-git-send-email-eranian@google.com Signed-off-by: Ingo Molnar <mingo@kernel.org> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'kernel/events')
-rw-r--r--kernel/events/core.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/kernel/events/core.c b/kernel/events/core.c
index 77c96d18c23..98c0845fcd2 100644
--- a/kernel/events/core.c
+++ b/kernel/events/core.c
@@ -4791,6 +4791,9 @@ got_name:
mmap_event->file_name = name;
mmap_event->file_size = size;
+ if (!(vma->vm_flags & VM_EXEC))
+ mmap_event->event_id.header.misc |= PERF_RECORD_MISC_MMAP_DATA;
+
mmap_event->event_id.header.size = sizeof(mmap_event->event_id) + size;
rcu_read_lock();