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authorJiri Olsa <jolsa@kernel.org>2015-06-14 10:19:16 +0200
committerArnaldo Carvalho de Melo <acme@redhat.com>2015-06-16 10:34:39 -0300
commitb45f65e8fddc89ac6b46388908d3f6ac728be372 (patch)
tree00c67bd22d4adc6aeabeb30eb7be4ddf5c85527c /tools/perf/util/xyarray.c
parentba7ecb02e7b89b09d8cdf4c1514a386af8916c4b (diff)
perf tools: Introduce xyarray__reset function
To zero all the xyarray contents. It will be used in following patches. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/r/1434269985-521-2-git-send-email-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/util/xyarray.c')
-rw-r--r--tools/perf/util/xyarray.c8
1 files changed, 8 insertions, 0 deletions
diff --git a/tools/perf/util/xyarray.c b/tools/perf/util/xyarray.c
index 22afbf6c536a..c10ba41ef3f6 100644
--- a/tools/perf/util/xyarray.c
+++ b/tools/perf/util/xyarray.c
@@ -9,11 +9,19 @@ struct xyarray *xyarray__new(int xlen, int ylen, size_t entry_size)
if (xy != NULL) {
xy->entry_size = entry_size;
xy->row_size = row_size;
+ xy->entries = xlen * ylen;
}
return xy;
}
+void xyarray__reset(struct xyarray *xy)
+{
+ size_t n = xy->entries * xy->entry_size;
+
+ memset(xy->contents, 0, n);
+}
+
void xyarray__delete(struct xyarray *xy)
{
free(xy);