[PATCH v2 01/19] perf, tools: Save max_x, max_y in xyarray

Andi Kleen
2017-08-11T23:26:41Z

From: Andi Kleen <ak@linux.intel.com>

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>
---
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 7251fdbabced..c8f415d9877b 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 7f30af371b7e..785884158137 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 xy_max_y(struct xyarray *xy)
+{
+ return xy->max_x;
+}
+
+static inline int xy_max_x(struct xyarray *xy)
+{
+ return xy->max_y;
+}
+
#endif /* _PERF_XYARRAY_H_ */
--
2.9.4