Path: csiph.com!aioe.org!bofh.it!news.nic.it!robomod From: Arnaldo Carvalho de Melo Newsgroups: linux.kernel Subject: [PATCH 05/10] perf tools: Introduce xyarray__reset function Date: Tue, 16 Jun 2015 20:30:02 +0200 Message-ID: References: X-Original-To: Ingo Molnar X-Mailer: git-send-email 2.1.0 X-Srs-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org See http://www.infradead.org/rpr.html Sender: robomod@news.nic.it List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Approved: robomod@news.nic.it Lines: 68 Organization: linux.* mail to news gateway X-Original-Cc: linux-kernel@vger.kernel.org, Jiri Olsa , Adrian Hunter , Andi Kleen , David Ahern , Namhyung Kim , Peter Zijlstra , Stephane Eranian , Arnaldo Carvalho de Melo X-Original-Date: Tue, 16 Jun 2015 15:21:13 -0300 X-Original-Message-ID: <1434478878-16145-6-git-send-email-acme@kernel.org> X-Original-References: <1434478878-16145-1-git-send-email-acme@kernel.org> X-Original-Sender: linux-kernel-owner@vger.kernel.org Xref: aioe.org linux.kernel:1166305 From: Jiri Olsa To zero all the xyarray contents. It will be used in following patches. Signed-off-by: Jiri Olsa Cc: Adrian Hunter Cc: Andi Kleen Cc: David Ahern Cc: Namhyung Kim Cc: Peter Zijlstra Cc: Stephane Eranian Link: http://lkml.kernel.org/r/1434269985-521-2-git-send-email-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- 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 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); diff --git a/tools/perf/util/xyarray.h b/tools/perf/util/xyarray.h index c488a07275dd..7f30af371b7e 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) { -- 2.1.0 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/