From nobody Wed Feb 11 17:25:43 2026 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 32275C61DA4 for ; Mon, 13 Mar 2023 11:43:14 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230493AbjCMLnM (ORCPT ); Mon, 13 Mar 2023 07:43:12 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:49400 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230452AbjCMLmK (ORCPT ); Mon, 13 Mar 2023 07:42:10 -0400 Received: from mail-pj1-x102f.google.com (mail-pj1-x102f.google.com [IPv6:2607:f8b0:4864:20::102f]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 9ADDE64B2D for ; Mon, 13 Mar 2023 04:41:37 -0700 (PDT) Received: by mail-pj1-x102f.google.com with SMTP id e15-20020a17090ac20f00b0023d1b009f52so1268634pjt.2 for ; Mon, 13 Mar 2023 04:41:37 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1678707693; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=JgI7sIUXfEuJw5LLT6sg1Fr5x2zyVVOPMU2FeyfJj/s=; b=JSIqC98bHXd1HfroD6mo8qc6VuzWGpMiZiOthJxGbxLvgobrPsxvkG5EQWiZDRv19w 8a/xOu07TOj4EYGKthPFFnp2SbxDfE0fbj3bSEFRiSxL4P/fUXW9F+kDAMPDzWtT/bd2 SyjB158rjJK1DEIXNp+dd7yq+0P7jv0shgpYeDdvDZF9Nd8dGuuTZ6jkTa5/m6zh2Se0 uK2kxdbbp1G6x/0vfMELj8w9TzaykirdcTQ5RDv67S9/bX6Zu7e+MLWdq/txA1aLnFB0 r30Hwq9iMEbBMyK0a5eZwP+lTh0Vyr5MkZDlsVkuwX45BrDeM47pS5tdlHkWbtilq/v7 7BgA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; t=1678707693; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=JgI7sIUXfEuJw5LLT6sg1Fr5x2zyVVOPMU2FeyfJj/s=; b=0Ut9hhVVukEIoXH4HSJjv2SA6nvpMrs98uZXzoUyABEn/Dln2c/5Os7quG164WbGGj 5c60XYyYQqn89sB+ZNNfa7nhM6wMUbsOUexSNHbvPRzD5SoFBBGOOFOfFc1NgproVAzq qze3K/AObWyetiXrVK31QeRxmd/E0GcMQw5xZPW4rUC3kznSmUnWjhlNJDASKU1HhjF6 aP+zrFoUUNCSnWkQXREtFCZGImqcBKoWWXrv1ymaoDtnzNiGrpYkXnmqqgx3cykY3psq /lBpYUCqtobCcaP+AyT3QNBNJx4rJYQuGeATyEdAhg6ssCw2T3FkP1NCg/mMezSiZRIM 5+jQ== X-Gm-Message-State: AO0yUKW02vAIMQy7YPVWg0kznoSTFT5FiPYiOTrHQfC5pUO9axMR7AEe S0Kf9jQwwuxrMUdRbQylq+D7mQ== X-Google-Smtp-Source: AK7set8lj7ygHJaxfEtsTufHlkoST0XAsShMw0uYRCqpWkwxzect/JSVGbVD3bocqyj/ONMhfjXT1Q== X-Received: by 2002:a17:90a:53:b0:234:d1c:f112 with SMTP id 19-20020a17090a005300b002340d1cf112mr35281110pjb.0.1678707692996; Mon, 13 Mar 2023 04:41:32 -0700 (PDT) Received: from leoy-huanghe.lan ([156.59.236.112]) by smtp.gmail.com with ESMTPSA id q21-20020a17090a2e1500b0022335f1dae2sm4281625pjd.22.2023.03.13.04.41.28 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 13 Mar 2023 04:41:32 -0700 (PDT) From: Leo Yan To: Arnaldo Carvalho de Melo , Jiri Olsa , Namhyung Kim , Ian Rogers , John Garry , James Clark , Adrian Hunter , Peter Zijlstra , Ingo Molnar , Mark Rutland , Alexander Shishkin , linux-perf-users@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org Cc: Leo Yan Subject: [PATCH v4 12/16] perf kvm: Polish sorting key Date: Mon, 13 Mar 2023 19:40:14 +0800 Message-Id: <20230313114018.543254-13-leo.yan@linaro.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230313114018.543254-1-leo.yan@linaro.org> References: <20230313114018.543254-1-leo.yan@linaro.org> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" Since histograms supports sorting, the tool doesn't need to maintain the mapping between the sorting keys and the corresponding comparison callbacks, therefore, this patch removes structure kvm_event_key. But we still need to validate the sorting key, this patch uses an array for sorting keys and renames function select_key() to is_valid_key() to validate the sorting key passed by user. Signed-off-by: Leo Yan --- tools/perf/builtin-kvm.c | 29 ++++++++++------------------- tools/perf/util/kvm-stat.h | 8 -------- 2 files changed, 10 insertions(+), 27 deletions(-) diff --git a/tools/perf/builtin-kvm.c b/tools/perf/builtin-kvm.c index ba3134613bcb..1e9338855239 100644 --- a/tools/perf/builtin-kvm.c +++ b/tools/perf/builtin-kvm.c @@ -76,15 +76,6 @@ COMPARE_EVENT_KEY(min, stats.min); COMPARE_EVENT_KEY(count, stats.n); COMPARE_EVENT_KEY(mean, stats.mean); =20 -#define DEF_SORT_NAME_KEY(name, compare_key) \ - { #name, cmp_event_ ## compare_key } - -static struct kvm_event_key keys[] =3D { - DEF_SORT_NAME_KEY(sample, count), - DEF_SORT_NAME_KEY(time, mean), - { NULL, NULL } -}; - struct kvm_hists { struct hists hists; struct perf_hpp_list list; @@ -757,18 +748,18 @@ static bool handle_kvm_event(struct perf_kvm_stat *kv= m, return true; } =20 -static bool select_key(struct perf_kvm_stat *kvm) +static bool is_valid_key(struct perf_kvm_stat *kvm) { - int i; + static const char *key_array[] =3D { + "ev_name", "sample", "time", "max_t", "min_t", "mean_t", + }; + unsigned int i; =20 - for (i =3D 0; keys[i].name; i++) { - if (!strcmp(keys[i].name, kvm->sort_key)) { - kvm->compare =3D keys[i].key; + for (i =3D 0; i < ARRAY_SIZE(key_array); i++) + if (!strcmp(key_array[i], kvm->sort_key)) return true; - } - } =20 - pr_err("Unknown compare key:%s\n", kvm->sort_key); + pr_err("Unsupported sort key: %s\n", kvm->sort_key); return false; } =20 @@ -1198,7 +1189,7 @@ static int kvm_events_live_report(struct perf_kvm_sta= t *kvm) return ret; =20 if (!verify_vcpu(kvm->trace_vcpu) || - !select_key(kvm) || + !is_valid_key(kvm) || !register_kvm_events_ops(kvm)) { goto out; } @@ -1393,7 +1384,7 @@ static int kvm_events_report_vcpu(struct perf_kvm_sta= t *kvm) if (!verify_vcpu(vcpu)) goto exit; =20 - if (!select_key(kvm)) + if (!is_valid_key(kvm)) goto exit; =20 if (!register_kvm_events_ops(kvm)) diff --git a/tools/perf/util/kvm-stat.h b/tools/perf/util/kvm-stat.h index 4385be769eee..35d03894fac3 100644 --- a/tools/perf/util/kvm-stat.h +++ b/tools/perf/util/kvm-stat.h @@ -49,13 +49,6 @@ struct kvm_event { struct hist_entry he; }; =20 -typedef int (*key_cmp_fun)(struct kvm_event*, struct kvm_event*, int); - -struct kvm_event_key { - const char *name; - key_cmp_fun key; -}; - struct child_event_ops { void (*get_key)(struct evsel *evsel, struct perf_sample *sample, @@ -98,7 +91,6 @@ struct perf_kvm_stat { const char *exit_reasons_isa; =20 struct kvm_events_ops *events_ops; - key_cmp_fun compare; =20 u64 total_time; u64 total_count; --=20 2.34.1