Commit-ID: b45f65e8fddc89ac6b46388908d3f6ac728be372
Gitweb: http://git.kernel.org/tip/b45f65e8fddc89ac6b46388908d3f6ac728be372
Author: Jiri Olsa <jolsa@xxxxxxxxxx>
AuthorDate: Sun, 14 Jun 2015 10:19:16 +0200
Committer: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
CommitDate: Tue, 16 Jun 2015 10:34:39 -0300
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@xxxxxxxxxx>
Cc: Adrian Hunter <adrian.hunter@xxxxxxxxx>
Cc: Andi Kleen <ak@xxxxxxxxxxxxxxx>
Cc: David Ahern <dsahern@xxxxxxxxx>
Cc: Namhyung Kim <namhyung@xxxxxxxxxx>
Cc: Peter Zijlstra <a.p.zijlstra@xxxxxxxxx>
Cc: Stephane Eranian <eranian@xxxxxxxxxx>
Link: http://lkml.kernel.org/r/1434269985-521-2-git-send-email-jolsa@xxxxxxxxxx
Signed-off-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
---
tools/perf/util/xyarray.c | 8 ++++++++
tools/perf/util/xyarray.h | 2 ++
2 files changed, 10 insertions(+)
diff --git a/tools/perf/util/xyarray.c b/tools/perf/util/xyarray.c
index 22afbf6..c10ba41 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);
diff --git a/tools/perf/util/xyarray.h b/tools/perf/util/xyarray.h
index c488a07..7f30af3 100644
--- a/tools/perf/util/xyarray.h
+++ b/tools/perf/util/xyarray.h
@@ -6,11 +6,13 @@
struct xyarray {
size_t row_size;
size_t entry_size;
+ size_t entries;
char contents[];
};
struct xyarray *xyarray__new(int xlen, int ylen, size_t entry_size);
void xyarray__delete(struct xyarray *xy);
+void xyarray__reset(struct xyarray *xy);
static inline void *xyarray__entry(struct xyarray *xy, int x, int y)
{
--
To unsubscribe from this list: send the line "unsubscribe linux-tip-commits" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
|