From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-12.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI, MENTIONS_GIT_HOSTING,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 2DC2FC76195 for ; Sun, 21 Jul 2019 11:31:44 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id F07CA2085A for ; Sun, 21 Jul 2019 11:31:43 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1563708704; bh=w36KDlf9zweHwqWo6Wc2Mqvhp7TRLtI/v0NN3qH/8X4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=D44iWBhC+PKAAEQjI9pEFswU7gvAvfGwso18zI3Gn3tfdlpMYeEyfEpUlvjPVQPBw Bdv0HqK4K7p11RumMYb2ta4womChY10HAHTF63Z4cMWX7lKsI7mztB0zk9cntE5P0I PXxX6KkpvOit6BETrtQEUVeWCSnXQhhoM+UHkJQw= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727379AbfGULbm (ORCPT ); Sun, 21 Jul 2019 07:31:42 -0400 Received: from mx1.redhat.com ([209.132.183.28]:35886 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726390AbfGULbm (ORCPT ); Sun, 21 Jul 2019 07:31:42 -0400 Received: from smtp.corp.redhat.com (int-mx04.intmail.prod.int.phx2.redhat.com [10.5.11.14]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 715ED83F3F; Sun, 21 Jul 2019 11:31:41 +0000 (UTC) Received: from krava.redhat.com (ovpn-204-23.brq.redhat.com [10.40.204.23]) by smtp.corp.redhat.com (Postfix) with ESMTP id 7B9F25D9D3; Sun, 21 Jul 2019 11:31:37 +0000 (UTC) From: Jiri Olsa To: Arnaldo Carvalho de Melo Cc: lkml , Ingo Molnar , Namhyung Kim , Alexander Shishkin , Peter Zijlstra , Andi Kleen , Alexey Budankov , Michael Petlan Subject: [PATCH 60/79] libperf: Add readn/writen function Date: Sun, 21 Jul 2019 13:24:47 +0200 Message-Id: <20190721112506.12306-61-jolsa@kernel.org> In-Reply-To: <20190721112506.12306-1-jolsa@kernel.org> References: <20190721112506.12306-1-jolsa@kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Scanned-By: MIMEDefang 2.79 on 10.5.11.14 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.27]); Sun, 21 Jul 2019 11:31:41 +0000 (UTC) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Moving readn/writen functions into libperf. Keeping the name because they will be shared only between perf and libperf. These are not exported functions. Link: http://lkml.kernel.org/n/tip-my4n8qzlt98b0xjxbljscl7r@git.kernel.org Signed-off-by: Jiri Olsa --- tools/perf/lib/Build | 1 + tools/perf/lib/include/internal/lib.h | 10 ++++++ tools/perf/lib/lib.c | 46 +++++++++++++++++++++++++++ tools/perf/util/util.c | 40 ----------------------- tools/perf/util/util.h | 4 +-- 5 files changed, 58 insertions(+), 43 deletions(-) create mode 100644 tools/perf/lib/include/internal/lib.h create mode 100644 tools/perf/lib/lib.c diff --git a/tools/perf/lib/Build b/tools/perf/lib/Build index 4f78ec0b4e10..c31f1c111f8f 100644 --- a/tools/perf/lib/Build +++ b/tools/perf/lib/Build @@ -5,6 +5,7 @@ libperf-y += evsel.o libperf-y += evlist.o libperf-y += zalloc.o libperf-y += xyarray.o +libperf-y += lib.o $(OUTPUT)zalloc.o: ../../lib/zalloc.c FORCE $(call rule_mkdir) diff --git a/tools/perf/lib/include/internal/lib.h b/tools/perf/lib/include/internal/lib.h new file mode 100644 index 000000000000..0b56f1201dc9 --- /dev/null +++ b/tools/perf/lib/include/internal/lib.h @@ -0,0 +1,10 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef __LIBPERF_INTERNAL_LIB_H +#define __LIBPERF_INTERNAL_LIB_H + +#include + +ssize_t readn(int fd, void *buf, size_t n); +ssize_t writen(int fd, const void *buf, size_t n); + +#endif /* __LIBPERF_INTERNAL_CPUMAP_H */ diff --git a/tools/perf/lib/lib.c b/tools/perf/lib/lib.c new file mode 100644 index 000000000000..2a81819c3b8c --- /dev/null +++ b/tools/perf/lib/lib.c @@ -0,0 +1,46 @@ +// SPDX-License-Identifier: GPL-2.0 +#include +#include +#include +#include +#include + +static ssize_t ion(bool is_read, int fd, void *buf, size_t n) +{ + void *buf_start = buf; + size_t left = n; + + while (left) { + /* buf must be treated as const if !is_read. */ + ssize_t ret = is_read ? read(fd, buf, left) : + write(fd, buf, left); + + if (ret < 0 && errno == EINTR) + continue; + if (ret <= 0) + return ret; + + left -= ret; + buf += ret; + } + + BUG_ON((size_t)(buf - buf_start) != n); + return n; +} + +/* + * Read exactly 'n' bytes or return an error. + */ +ssize_t readn(int fd, void *buf, size_t n) +{ + return ion(true, fd, buf, n); +} + +/* + * Write exactly 'n' bytes or return an error. + */ +ssize_t writen(int fd, const void *buf, size_t n) +{ + /* ion does not modify buf. */ + return ion(false, fd, (void *)buf, n); +} diff --git a/tools/perf/util/util.c b/tools/perf/util/util.c index a61535cf1bca..9c3c97697387 100644 --- a/tools/perf/util/util.c +++ b/tools/perf/util/util.c @@ -384,46 +384,6 @@ int copyfile(const char *from, const char *to) return copyfile_mode(from, to, 0755); } -static ssize_t ion(bool is_read, int fd, void *buf, size_t n) -{ - void *buf_start = buf; - size_t left = n; - - while (left) { - /* buf must be treated as const if !is_read. */ - ssize_t ret = is_read ? read(fd, buf, left) : - write(fd, buf, left); - - if (ret < 0 && errno == EINTR) - continue; - if (ret <= 0) - return ret; - - left -= ret; - buf += ret; - } - - BUG_ON((size_t)(buf - buf_start) != n); - return n; -} - -/* - * Read exactly 'n' bytes or return an error. - */ -ssize_t readn(int fd, void *buf, size_t n) -{ - return ion(true, fd, buf, n); -} - -/* - * Write exactly 'n' bytes or return an error. - */ -ssize_t writen(int fd, const void *buf, size_t n) -{ - /* ion does not modify buf. */ - return ion(false, fd, (void *)buf, n); -} - size_t hex_width(u64 v) { size_t n = 1; diff --git a/tools/perf/util/util.h b/tools/perf/util/util.h index dc7a469921e9..0dab140c6517 100644 --- a/tools/perf/util/util.h +++ b/tools/perf/util/util.h @@ -11,6 +11,7 @@ #include #include #include +#include /* General helper functions */ void usage(const char *err) __noreturn; @@ -30,9 +31,6 @@ int copyfile_mode(const char *from, const char *to, mode_t mode); int copyfile_ns(const char *from, const char *to, struct nsinfo *nsi); int copyfile_offset(int ifd, loff_t off_in, int ofd, loff_t off_out, u64 size); -ssize_t readn(int fd, void *buf, size_t n); -ssize_t writen(int fd, const void *buf, size_t n); - size_t hex_width(u64 v); extern unsigned int page_size; -- 2.21.0