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Subject[tip:perf/core] perf xyarray: Save max_x, max_y
Commit-ID:  d74be47673676eded2f0bb8274e752bed32c42d8
Gitweb: http://git.kernel.org/tip/d74be47673676eded2f0bb8274e752bed32c42d8
Author: Andi Kleen <ak@linux.intel.com>
AuthorDate: Fri, 11 Aug 2017 16:26:16 -0700
Committer: Arnaldo Carvalho de Melo <acme@redhat.com>
CommitDate: Tue, 22 Aug 2017 11:51:28 -0300

perf xyarray: Save max_x, max_y

Save the original array dimensions in xyarrays, so that users can
retrieve them later. Add some inline functions to access these fields.

Signed-off-by: Andi Kleen <ak@linux.intel.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Link: http://lkml.kernel.org/r/20170811232634.30465-1-andi@firstfloor.org
[ As noticed by Jiri, fix up namespacing: xy__method() -> xyarray__method() ]
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
tools/perf/util/xyarray.c | 2 ++
tools/perf/util/xyarray.h | 12 ++++++++++++
2 files changed, 14 insertions(+)

diff --git a/tools/perf/util/xyarray.c b/tools/perf/util/xyarray.c
index 7251fdb..c8f415d 100644
--- a/tools/perf/util/xyarray.c
+++ b/tools/perf/util/xyarray.c
@@ -12,6 +12,8 @@ struct xyarray *xyarray__new(int xlen, int ylen, size_t entry_size)
xy->entry_size = entry_size;
xy->row_size = row_size;
xy->entries = xlen * ylen;
+ xy->max_x = xlen;
+ xy->max_y = ylen;
}

return xy;
diff --git a/tools/perf/util/xyarray.h b/tools/perf/util/xyarray.h
index 7f30af3..4ba726c 100644
--- a/tools/perf/util/xyarray.h
+++ b/tools/perf/util/xyarray.h
@@ -7,6 +7,8 @@ struct xyarray {
size_t row_size;
size_t entry_size;
size_t entries;
+ size_t max_x;
+ size_t max_y;
char contents[];
};

@@ -19,4 +21,14 @@ static inline void *xyarray__entry(struct xyarray *xy, int x, int y)
return &xy->contents[x * xy->row_size + y * xy->entry_size];
}

+static inline int xyarray__max_y(struct xyarray *xy)
+{
+ return xy->max_x;
+}
+
+static inline int xyarray__max_x(struct xyarray *xy)
+{
+ return xy->max_y;
+}
+
#endif /* _PERF_XYARRAY_H_ */
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