From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752362AbbFNIUO (ORCPT ); Sun, 14 Jun 2015 04:20:14 -0400 Received: from mx1.redhat.com ([209.132.183.28]:34624 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751730AbbFNIT7 (ORCPT ); Sun, 14 Jun 2015 04:19:59 -0400 From: Jiri Olsa To: Arnaldo Carvalho de Melo Cc: lkml , Adrian Hunter , Andi Kleen , David Ahern , Ingo Molnar , Namhyung Kim , Peter Zijlstra , Stephane Eranian Subject: [PATCH 01/30] perf tools: Introduce xyarray__reset function Date: Sun, 14 Jun 2015 10:19:16 +0200 Message-Id: <1434269985-521-2-git-send-email-jolsa@kernel.org> In-Reply-To: <1434269985-521-1-git-send-email-jolsa@kernel.org> References: <1434269985-521-1-git-send-email-jolsa@kernel.org> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org To zero all the xyarray contents. It will be used in following patches. Link: http://lkml.kernel.org/n/tip-bp8bcl46cav05xn0uacg7ytn@git.kernel.org Signed-off-by: Jiri Olsa --- 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) { -- 1.9.3