From patchwork Mon Aug 7 07:51:19 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jing Zhang X-Patchwork-Id: 13343171 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id D6681C04E69 for ; Mon, 7 Aug 2023 07:52:18 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:MIME-Version:List-Subscribe:List-Help: List-Post:List-Archive:List-Unsubscribe:List-Id:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=iS/W1zbe4nF39i6NO3jKOpK1e3J7K9c1B/dco+ufoZU=; b=bq+8N260Qy1sui XH+89Ca0kZlXkXSAAozKnvNcXnjnjWuXJtsUFLPDv2WZGvpeYcmIWXWnNIG2QUe6PYZ0B+e8e1c87 YOiO8FE9TIGAxZFS9QGGdYaVsT7YXRz0wNCi9wNjhE5nXpuM9xi1p0kLkTWgAKpSk5SHfWkjSSCOp fWk4nGFtd951zgUDz7jP/PPu2jxiuyqfy+aTwekDritqMcpTrcnPnfU+BrzM00o94BOl8GzxVXC25 LB2pSg/cRSmp5todVcx3bZiipWNt6Tutk7NXm2YqTvPHlmdtcSXOhSAdmoc5V/nyBwj7wcc520TgR 529aPWD/XaCgRyUiX9QA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1qSv1q-00GOUv-2q; Mon, 07 Aug 2023 07:51:50 +0000 Received: from out30-119.freemail.mail.aliyun.com ([115.124.30.119]) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1qSv1j-00GOP1-0v for linux-arm-kernel@lists.infradead.org; Mon, 07 Aug 2023 07:51:47 +0000 X-Alimail-AntiSpam: AC=PASS;BC=-1|-1;BR=01201311R171e4;CH=green;DM=||false|;DS=||;FP=0|-1|-1|-1|0|-1|-1|-1;HT=ay29a033018045192;MF=renyu.zj@linux.alibaba.com;NM=1;PH=DS;RN=21;SR=0;TI=SMTPD_---0VpC-03F_1691394694; Received: from srmbuffer011165236051.sqa.net(mailfrom:renyu.zj@linux.alibaba.com fp:SMTPD_---0VpC-03F_1691394694) by smtp.aliyun-inc.com; Mon, 07 Aug 2023 15:51:35 +0800 From: Jing Zhang To: John Garry , Ian Rogers Cc: Will Deacon , James Clark , Arnaldo Carvalho de Melo , Mark Rutland , Mike Leach , Leo Yan , Namhyung Kim , Peter Zijlstra , Ingo Molnar , Alexander Shishkin , Jiri Olsa , Adrian Hunter , linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-perf-users@vger.kernel.org, linux-doc@vger.kernel.org, Zhuo Song , Jing Zhang , Shuai Xue Subject: [PATCH v6 1/7] perf pmu: "Compat" supports matching multiple identifiers Date: Mon, 7 Aug 2023 15:51:19 +0800 Message-Id: <1691394685-61240-2-git-send-email-renyu.zj@linux.alibaba.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1691394685-61240-1-git-send-email-renyu.zj@linux.alibaba.com> References: <1691394685-61240-1-git-send-email-renyu.zj@linux.alibaba.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230807_005143_577882_996F7A0F X-CRM114-Status: GOOD ( 17.52 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org The jevent "Compat" is used for uncore PMU alias or metric definitions. The same PMU driver has different PMU identifiers due to different hardware versions and types, but they may have some common PMU event. Since a Compat value can only match one identifier, when adding the same event alias to PMUs with different identifiers, each identifier needs to be defined once, which is not streamlined enough. So let "Compat" supports matching multiple identifiers for uncore PMU alias. For example, the Compat value {43401;436*} can match the PMU identifier "43401", that is, CMN600_r0p0, and the PMU identifier with the prefix "436", that is, all CMN650, where "*" is a wildcard. Tokens in Unit field are delimited by ';' with no spaces. Signed-off-by: Jing Zhang Reviewed-by: John Garry --- tools/perf/util/pmu.c | 33 +++++++++++++++++++++++++++++++-- tools/perf/util/pmu.h | 1 + 2 files changed, 32 insertions(+), 2 deletions(-) diff --git a/tools/perf/util/pmu.c b/tools/perf/util/pmu.c index ad209c8..6402423 100644 --- a/tools/perf/util/pmu.c +++ b/tools/perf/util/pmu.c @@ -776,6 +776,35 @@ static bool pmu_uncore_alias_match(const char *pmu_name, const char *name) return res; } +bool pmu_uncore_identifier_match(const char *id, const char *compat) +{ + char *tmp = NULL, *tok, *str; + bool res; + int n; + + /* + * The strdup() call is necessary here because "compat" is a const str* + * type and cannot be used as an argument to strtok_r(). + */ + str = strdup(compat); + if (!str) + return false; + + tok = strtok_r(str, ";", &tmp); + for (; tok; tok = strtok_r(NULL, ";", &tmp)) { + n = strlen(tok); + if ((tok[n - 1] == '*' && !strncmp(id, tok, n - 1)) || + !strcmp(id, tok)) { + res = true; + goto out; + } + } + res = false; +out: + free(str); + return res; +} + struct pmu_add_cpu_aliases_map_data { struct list_head *head; const char *name; @@ -847,8 +876,8 @@ static int pmu_add_sys_aliases_iter_fn(const struct pmu_event *pe, if (!pe->compat || !pe->pmu) return 0; - if (!strcmp(pmu->id, pe->compat) && - pmu_uncore_alias_match(pe->pmu, pmu->name)) { + if (pmu_uncore_alias_match(pe->pmu, pmu->name) && + pmu_uncore_identifier_match(pmu->id, pe->compat)) { __perf_pmu__new_alias(idata->head, -1, (char *)pe->name, (char *)pe->desc, diff --git a/tools/perf/util/pmu.h b/tools/perf/util/pmu.h index b9a02de..9d4385d 100644 --- a/tools/perf/util/pmu.h +++ b/tools/perf/util/pmu.h @@ -241,6 +241,7 @@ void pmu_add_cpu_aliases_table(struct list_head *head, struct perf_pmu *pmu, char *perf_pmu__getcpuid(struct perf_pmu *pmu); const struct pmu_events_table *pmu_events_table__find(void); const struct pmu_metrics_table *pmu_metrics_table__find(void); +bool pmu_uncore_identifier_match(const char *id, const char *compat); void perf_pmu_free_alias(struct perf_pmu_alias *alias); int perf_pmu__convert_scale(const char *scale, char **end, double *sval);