From patchwork Fri Feb 23 16:05:25 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: John Garry X-Patchwork-Id: 10238087 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id DF35760390 for ; Fri, 23 Feb 2018 15:21:50 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id CBF12296BE for ; Fri, 23 Feb 2018 15:21:50 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id C02ED296C7; Fri, 23 Feb 2018 15:21:50 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-1.9 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID autolearn=unavailable version=3.3.1 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 19273296BE for ; Fri, 23 Feb 2018 15:21:49 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-ID:Date:Subject:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=hYcyqHUvZyT51767ikj3NXyDp8+q119yzOGA8VfpyYs=; b=YC2Ic7PZ1qp7Ky LKsfEf0R69zlC/z+mXvcWmUNmp/O3cNxvrQ4wgc7tUqWSKdbzji3D9SpFUtHDyZVZ3aETAT/rbSAQ PiqnQKXUSERJ/VA8JaN38FL7KFK9NV1c8ShuoOYmc2omxlhUOsSPa1/ZmYcgnDdMXCUUmgL8Rf1FQ ksjPoA9vhzVwbI8VQfCgG3iX8ZILKonz44C9w5j2xi565+Ad+pJW0nrRLkFHFA3eW0Cy4YbctZapi vgwU6zFuGWT711R+q0AyJaxyb7I5j9I3rP9yqQpLbAES5VAhwqZM6wL7pJjGQBrj/wzvUgTCJQPjo E87OBlxaoGs7GY8Wki3g==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.89 #1 (Red Hat Linux)) id 1epFAG-0008Ew-IY; Fri, 23 Feb 2018 15:21:36 +0000 Received: from [45.249.212.35] (helo=huawei.com) by bombadil.infradead.org with esmtps (Exim 4.89 #1 (Red Hat Linux)) id 1epF3l-0001iz-2V for linux-arm-kernel@lists.infradead.org; Fri, 23 Feb 2018 15:15:14 +0000 Received: from DGGEMS413-HUB.china.huawei.com (unknown [172.30.72.58]) by Forcepoint Email with ESMTP id B56741F6BBA73; Fri, 23 Feb 2018 23:14:19 +0800 (CST) Received: from localhost.localdomain (10.67.212.75) by DGGEMS413-HUB.china.huawei.com (10.3.19.213) with Microsoft SMTP Server id 14.3.361.1; Fri, 23 Feb 2018 23:14:12 +0800 From: John Garry To: , , , , , , , , , Subject: [PATCH v2 04/11] perf vendor events: add support for pmu events vendor subdirectory Date: Sat, 24 Feb 2018 00:05:25 +0800 Message-ID: <1519401932-205051-5-git-send-email-john.garry@huawei.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1519401932-205051-1-git-send-email-john.garry@huawei.com> References: <1519401932-205051-1-git-send-email-john.garry@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.67.212.75] X-CFilter-Loop: Reflected X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20180223_071454_148637_4DB04D01 X-CRM114-Status: GOOD ( 17.10 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: zhangshaokun@hisilicon.com, John Garry , linuxarm@huawei.com, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Virus-Scanned: ClamAV using ClamSMTP For some architectures (like arm), it is required to support a vendor subdirectory and not locate all the JSONs for a specific vendor in the same folder. This is because all the events for the same vendor will be placed in the same pmu events table, which may cause conflict. This conflict would be in the instance that a vendor's custom implemented events do have the same meaning on different platforms, so events in the pmu table would conflict. In addition, per list command may show events which are not even supported for a given platform. This patch adds support for a arch/vendor/platform directory hierarchy, while maintaining backwards-compatibility for existing arch/platform structure. In this, each platform would always have its own pmu events table. In generated file pmu_events.c, each platform table name is in the format pme{_vendor}_platform, like this: struct pmu_events_map pmu_events_map[] = { { .cpuid = "0x00000000420f5160", .version = "v1", .type = "core", .table = pme_cavium_thunderx2 }, { .cpuid = 0, .version = 0, .type = 0, .table = 0, }, }; Signed-off-by: John Garry Acked-by: Jiri Olsa --- tools/perf/pmu-events/README | 4 +++ tools/perf/pmu-events/jevents.c | 64 +++++++++++++++++++++++++++++++++++++---- 2 files changed, 62 insertions(+), 6 deletions(-) diff --git a/tools/perf/pmu-events/README b/tools/perf/pmu-events/README index 2407abc..655286f 100644 --- a/tools/perf/pmu-events/README +++ b/tools/perf/pmu-events/README @@ -28,6 +28,10 @@ sub directory. Thus for the Silvermont X86 CPU: Cache.json Memory.json Virtual-Memory.json Frontend.json Pipeline.json +The JSONs folder for a CPU model/family may be placed in the root arch +folder, or may be placed in a vendor sub-folder under the arch folder +for instances where the arch and vendor are not the same. + Using the JSON files and the mapfile, 'jevents' generates the C source file, 'pmu-events.c', which encodes the two sets of tables: diff --git a/tools/perf/pmu-events/jevents.c b/tools/perf/pmu-events/jevents.c index 1d02faf..7b9e210 100644 --- a/tools/perf/pmu-events/jevents.c +++ b/tools/perf/pmu-events/jevents.c @@ -572,7 +572,7 @@ static char *file_name_to_table_name(char *fname) * Derive rest of table name from basename of the JSON file, * replacing hyphens and stripping out .json suffix. */ - n = asprintf(&tblname, "pme_%s", basename(fname)); + n = asprintf(&tblname, "pme_%s", fname); if (n < 0) { pr_info("%s: asprintf() error %s for file %s\n", prog, strerror(errno), fname); @@ -582,7 +582,7 @@ static char *file_name_to_table_name(char *fname) for (i = 0; i < strlen(tblname); i++) { c = tblname[i]; - if (c == '-') + if (c == '-' || c == '/') tblname[i] = '_'; else if (c == '.') { tblname[i] = '\0'; @@ -739,25 +739,77 @@ static int get_maxfds(void) static FILE *eventsfp; static char *mapfile; +static int is_leaf_dir(const char *fpath) +{ + DIR *d; + struct dirent *dir; + int res = 1; + + d = opendir(fpath); + if (!d) + return 0; + + while ((dir = readdir(d)) != NULL) { + if (dir->d_type == DT_DIR && dir->d_name[0] != '.') { + res = 0; + break; + } else if (dir->d_type == DT_UNKNOWN) { + char path[PATH_MAX]; + struct stat st; + + sprintf(path, "%s/%s", fpath, dir->d_name); + if (stat(path, &st)) + break; + + if (S_ISDIR(st.st_mode)) { + res = 0; + break; + } + } + } + + closedir(d); + + return res; +} + static int process_one_file(const char *fpath, const struct stat *sb, int typeflag, struct FTW *ftwbuf) { - char *tblname, *bname = (char *) fpath + ftwbuf->base; + char *tblname, *bname; int is_dir = typeflag == FTW_D; int is_file = typeflag == FTW_F; int level = ftwbuf->level; int err = 0; + if (level == 2 && is_dir) { + /* + * For level 2 directory, bname will include parent name, + * like vendor/platform. So search back from platform dir + * to find this. + */ + bname = (char *) fpath + ftwbuf->base - 2; + for (;;) { + if (*bname == '/') + break; + bname--; + } + bname++; + } else + bname = (char *) fpath + ftwbuf->base; + pr_debug("%s %d %7jd %-20s %s\n", is_file ? "f" : is_dir ? "d" : "x", level, sb->st_size, bname, fpath); - /* base dir */ - if (level == 0) + /* base dir or too deep */ + if (level == 0 || level > 3) return 0; + /* model directory, reset topic */ - if (level == 1 && is_dir) { + if ((level == 1 && is_dir && is_leaf_dir(fpath)) || + (level == 2 && is_dir)) { if (close_table) print_events_table_suffix(eventsfp);