From patchwork Mon Jul 18 23:33:14 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Arnaldo Carvalho de Melo X-Patchwork-Id: 72260 Delivered-To: patch@linaro.org Received: by 10.140.29.52 with SMTP id a49csp376842qga; Mon, 18 Jul 2016 16:35:04 -0700 (PDT) X-Received: by 10.66.150.67 with SMTP id ug3mr60805246pab.41.1468884895379; Mon, 18 Jul 2016 16:34:55 -0700 (PDT) Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id o62si5909838pfb.55.2016.07.18.16.34.55; Mon, 18 Jul 2016 16:34:55 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752668AbcGRXeT (ORCPT + 29 others); Mon, 18 Jul 2016 19:34:19 -0400 Received: from merlin.infradead.org ([205.233.59.134]:52406 "EHLO merlin.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752285AbcGRXdi (ORCPT ); Mon, 18 Jul 2016 19:33:38 -0400 Received: from [179.235.155.208] (helo=jouet.infradead.org) by merlin.infradead.org with esmtpsa (Exim 4.85_2 #1 (Red Hat Linux)) id 1bPI2R-0004Y9-DY; Mon, 18 Jul 2016 23:33:27 +0000 Received: by jouet.infradead.org (Postfix, from userid 1000) id C6327143C96; Mon, 18 Jul 2016 20:33:22 -0300 (BRT) From: Arnaldo Carvalho de Melo To: Ingo Molnar Cc: linux-kernel@vger.kernel.org, Mark Rutland , Adrian Hunter , Alexander Shishkin , He Kuang , Kan Liang , Peter Zijlstra , Wang Nan , Arnaldo Carvalho de Melo Subject: [PATCH 11/15] perf cpu_map: Add more helpers Date: Mon, 18 Jul 2016 20:33:14 -0300 Message-Id: <1468884798-14932-12-git-send-email-acme@kernel.org> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1468884798-14932-1-git-send-email-acme@kernel.org> References: <1468884798-14932-1-git-send-email-acme@kernel.org> X-SRS-Rewrite: SMTP reverse-path rewritten from by merlin.infradead.org. See http://www.infradead.org/rpr.html Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Mark Rutland In some cases it's necessry to figure out the map-local index of a given Linux logical CPU ID. Add a new helper, cpu_map__idx, to acquire this. As the logic is largely the same as the existing cpu_map__has, this is rewritten in terms of the new helper. At the same time, add the inverse operation, cpu_map__cpu, which yields the logical CPU id for a map-local index. While this can be performed manually, wrapping this in a helper can make code more legible. Signed-off-by: Mark Rutland Acked-by: Jiri Olsa Cc: Adrian Hunter Cc: Alexander Shishkin Cc: He Kuang Cc: Kan Liang Cc: Mark Rutland Cc: Peter Zijlstra Cc: Wang Nan Link: http://lkml.kernel.org/r/1468577293-19667-3-git-send-email-mark.rutland@arm.com Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/cpumap.c | 14 ++++++++++++-- tools/perf/util/cpumap.h | 2 ++ 2 files changed, 14 insertions(+), 2 deletions(-) -- 2.7.4 diff --git a/tools/perf/util/cpumap.c b/tools/perf/util/cpumap.c index 15f83acac1b8..2c0b52264a46 100644 --- a/tools/perf/util/cpumap.c +++ b/tools/perf/util/cpumap.c @@ -589,14 +589,24 @@ int cpu__setup_cpunode_map(void) bool cpu_map__has(struct cpu_map *cpus, int cpu) { + return cpu_map__idx(cpus, cpu) != -1; +} + +int cpu_map__idx(struct cpu_map *cpus, int cpu) +{ int i; for (i = 0; i < cpus->nr; ++i) { if (cpus->map[i] == cpu) - return true; + return i; } - return false; + return -1; +} + +int cpu_map__cpu(struct cpu_map *cpus, int idx) +{ + return cpus->map[idx]; } size_t cpu_map__snprint(struct cpu_map *map, char *buf, size_t size) diff --git a/tools/perf/util/cpumap.h b/tools/perf/util/cpumap.h index 206dc550354a..06bd689f5989 100644 --- a/tools/perf/util/cpumap.h +++ b/tools/perf/util/cpumap.h @@ -68,5 +68,7 @@ int cpu_map__build_map(struct cpu_map *cpus, struct cpu_map **res, int (*f)(struct cpu_map *map, int cpu, void *data), void *data); +int cpu_map__cpu(struct cpu_map *cpus, int idx); bool cpu_map__has(struct cpu_map *cpus, int cpu); +int cpu_map__idx(struct cpu_map *cpus, int cpu); #endif /* __PERF_CPUMAP_H */